Develop and Issue HTTP2.0 protocol parse function, see nghttp file.
--- /dev/null
+The MIT License
+
+Copyright (c) 2012, 2014, 2015, 2016 Tatsuhiro Tsujikawa
+Copyright (c) 2012, 2014, 2015, 2016 nghttp2 contributors
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
--- /dev/null
+See COPYING
--- /dev/null
+#
+# Component Makefile
+#
+# This Makefile should, at the very least, just include $(SDK_PATH)/Makefile. By default,
+# this will take the sources in this directory, compile them and link them into
+# lib(subdirectory_name).a in the build directory. This behaviour is entirely configurable,
+# please read the SDK documents if you need to do this.
+#
+COMPONENT_ADD_INCLUDEDIRS := port/include include
+
+COMPONENT_SRCDIRS := library port
+
+#EXTRA_CFLAGS += -DMBEDTLS_CONFIG_FILE='"mbedtls/esp_config.h"'
+
+EXTRA_CFLAGS := -Wno-error=address -Waddress -DHAVE_CONFIG_H
+
+include $(IDF_PATH)/make/component.mk
\ No newline at end of file
--- /dev/null
+See README.rst
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2013, 2014 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_H
+#define NGHTTP2_H
+
+/* Define WIN32 when build target is Win32 API (borrowed from
+ libcurl) */
+#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32)
+#define WIN32
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdlib.h>
+#if defined(_MSC_VER) && (_MSC_VER < 1800)
+/* MSVC < 2013 does not have inttypes.h because it is not C99
+ compliant. See compiler macros and version number in
+ https://sourceforge.net/p/predef/wiki/Compilers/ */
+#include <stdint.h>
+#else /* !defined(_MSC_VER) || (_MSC_VER >= 1800) */
+#include <inttypes.h>
+#endif /* !defined(_MSC_VER) || (_MSC_VER >= 1800) */
+#include <sys/types.h>
+
+#include <nghttp2/nghttp2ver.h>
+
+#ifdef NGHTTP2_STATICLIB
+#define NGHTTP2_EXTERN
+#elif defined(WIN32)
+#ifdef BUILDING_NGHTTP2
+#define NGHTTP2_EXTERN __declspec(dllexport)
+#else /* !BUILDING_NGHTTP2 */
+#define NGHTTP2_EXTERN __declspec(dllimport)
+#endif /* !BUILDING_NGHTTP2 */
+#else /* !defined(WIN32) */
+#ifdef BUILDING_NGHTTP2
+#define NGHTTP2_EXTERN __attribute__((visibility("default")))
+#else /* !BUILDING_NGHTTP2 */
+#define NGHTTP2_EXTERN
+#endif /* !BUILDING_NGHTTP2 */
+#endif /* !defined(WIN32) */
+
+/**
+ * @macro
+ *
+ * The protocol version identification string of this library
+ * supports. This identifier is used if HTTP/2 is used over TLS.
+ */
+#define NGHTTP2_PROTO_VERSION_ID "h2"
+/**
+ * @macro
+ *
+ * The length of :macro:`NGHTTP2_PROTO_VERSION_ID`.
+ */
+#define NGHTTP2_PROTO_VERSION_ID_LEN 2
+
+/**
+ * @macro
+ *
+ * The serialized form of ALPN protocol identifier this library
+ * supports. Notice that first byte is the length of following
+ * protocol identifier. This is the same wire format of `TLS ALPN
+ * extension <https://tools.ietf.org/html/rfc7301>`_. This is useful
+ * to process incoming ALPN tokens in wire format.
+ */
+#define NGHTTP2_PROTO_ALPN "\x2h2"
+
+/**
+ * @macro
+ *
+ * The length of :macro:`NGHTTP2_PROTO_ALPN`.
+ */
+#define NGHTTP2_PROTO_ALPN_LEN (sizeof(NGHTTP2_PROTO_ALPN) - 1)
+
+/**
+ * @macro
+ *
+ * The protocol version identification string of this library
+ * supports. This identifier is used if HTTP/2 is used over cleartext
+ * TCP.
+ */
+#define NGHTTP2_CLEARTEXT_PROTO_VERSION_ID "h2c"
+
+/**
+ * @macro
+ *
+ * The length of :macro:`NGHTTP2_CLEARTEXT_PROTO_VERSION_ID`.
+ */
+#define NGHTTP2_CLEARTEXT_PROTO_VERSION_ID_LEN 3
+
+struct nghttp2_session;
+/**
+ * @struct
+ *
+ * The primary structure to hold the resources needed for a HTTP/2
+ * session. The details of this structure are intentionally hidden
+ * from the public API.
+ */
+typedef struct nghttp2_session nghttp2_session;
+
+/**
+ * @macro
+ *
+ * The age of :type:`nghttp2_info`
+ */
+#define NGHTTP2_VERSION_AGE 1
+
+/**
+ * @struct
+ *
+ * This struct is what `nghttp2_version()` returns. It holds
+ * information about the particular nghttp2 version.
+ */
+typedef struct {
+ /**
+ * Age of this struct. This instance of nghttp2 sets it to
+ * :macro:`NGHTTP2_VERSION_AGE` but a future version may bump it and
+ * add more struct fields at the bottom
+ */
+ int age;
+ /**
+ * the :macro:`NGHTTP2_VERSION_NUM` number (since age ==1)
+ */
+ int version_num;
+ /**
+ * points to the :macro:`NGHTTP2_VERSION` string (since age ==1)
+ */
+ const char *version_str;
+ /**
+ * points to the :macro:`NGHTTP2_PROTO_VERSION_ID` string this
+ * instance implements (since age ==1)
+ */
+ const char *proto_str;
+ /* -------- the above fields all exist when age == 1 */
+} nghttp2_info;
+
+/**
+ * @macro
+ *
+ * The default weight of stream dependency.
+ */
+#define NGHTTP2_DEFAULT_WEIGHT 16
+
+/**
+ * @macro
+ *
+ * The maximum weight of stream dependency.
+ */
+#define NGHTTP2_MAX_WEIGHT 256
+
+/**
+ * @macro
+ *
+ * The minimum weight of stream dependency.
+ */
+#define NGHTTP2_MIN_WEIGHT 1
+
+/**
+ * @macro
+ *
+ * The maximum window size
+ */
+#define NGHTTP2_MAX_WINDOW_SIZE ((int32_t)((1U << 31) - 1))
+
+/**
+ * @macro
+ *
+ * The initial window size for stream level flow control.
+ */
+#define NGHTTP2_INITIAL_WINDOW_SIZE ((1 << 16) - 1)
+/**
+ * @macro
+ *
+ * The initial window size for connection level flow control.
+ */
+#define NGHTTP2_INITIAL_CONNECTION_WINDOW_SIZE ((1 << 16) - 1)
+
+/**
+ * @macro
+ *
+ * The default header table size.
+ */
+#define NGHTTP2_DEFAULT_HEADER_TABLE_SIZE (1 << 12)
+
+/**
+ * @macro
+ *
+ * The client magic string, which is the first 24 bytes byte string of
+ * client connection preface.
+ */
+#define NGHTTP2_CLIENT_MAGIC "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"
+
+/**
+ * @macro
+ *
+ * The length of :macro:`NGHTTP2_CLIENT_MAGIC`.
+ */
+#define NGHTTP2_CLIENT_MAGIC_LEN 24
+
+/**
+ * @enum
+ *
+ * Error codes used in this library. The code range is [-999, -500],
+ * inclusive. The following values are defined:
+ */
+typedef enum {
+ /**
+ * Invalid argument passed.
+ */
+ NGHTTP2_ERR_INVALID_ARGUMENT = -501,
+ /**
+ * Out of buffer space.
+ */
+ NGHTTP2_ERR_BUFFER_ERROR = -502,
+ /**
+ * The specified protocol version is not supported.
+ */
+ NGHTTP2_ERR_UNSUPPORTED_VERSION = -503,
+ /**
+ * Used as a return value from :type:`nghttp2_send_callback`,
+ * :type:`nghttp2_recv_callback` and
+ * :type:`nghttp2_send_data_callback` to indicate that the operation
+ * would block.
+ */
+ NGHTTP2_ERR_WOULDBLOCK = -504,
+ /**
+ * General protocol error
+ */
+ NGHTTP2_ERR_PROTO = -505,
+ /**
+ * The frame is invalid.
+ */
+ NGHTTP2_ERR_INVALID_FRAME = -506,
+ /**
+ * The peer performed a shutdown on the connection.
+ */
+ NGHTTP2_ERR_EOF = -507,
+ /**
+ * Used as a return value from
+ * :func:`nghttp2_data_source_read_callback` to indicate that data
+ * transfer is postponed. See
+ * :func:`nghttp2_data_source_read_callback` for details.
+ */
+ NGHTTP2_ERR_DEFERRED = -508,
+ /**
+ * Stream ID has reached the maximum value. Therefore no stream ID
+ * is available.
+ */
+ NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE = -509,
+ /**
+ * The stream is already closed; or the stream ID is invalid.
+ */
+ NGHTTP2_ERR_STREAM_CLOSED = -510,
+ /**
+ * RST_STREAM has been added to the outbound queue. The stream is
+ * in closing state.
+ */
+ NGHTTP2_ERR_STREAM_CLOSING = -511,
+ /**
+ * The transmission is not allowed for this stream (e.g., a frame
+ * with END_STREAM flag set has already sent).
+ */
+ NGHTTP2_ERR_STREAM_SHUT_WR = -512,
+ /**
+ * The stream ID is invalid.
+ */
+ NGHTTP2_ERR_INVALID_STREAM_ID = -513,
+ /**
+ * The state of the stream is not valid (e.g., DATA cannot be sent
+ * to the stream if response HEADERS has not been sent).
+ */
+ NGHTTP2_ERR_INVALID_STREAM_STATE = -514,
+ /**
+ * Another DATA frame has already been deferred.
+ */
+ NGHTTP2_ERR_DEFERRED_DATA_EXIST = -515,
+ /**
+ * Starting new stream is not allowed (e.g., GOAWAY has been sent
+ * and/or received).
+ */
+ NGHTTP2_ERR_START_STREAM_NOT_ALLOWED = -516,
+ /**
+ * GOAWAY has already been sent.
+ */
+ NGHTTP2_ERR_GOAWAY_ALREADY_SENT = -517,
+ /**
+ * The received frame contains the invalid header block (e.g., There
+ * are duplicate header names; or the header names are not encoded
+ * in US-ASCII character set and not lower cased; or the header name
+ * is zero-length string; or the header value contains multiple
+ * in-sequence NUL bytes).
+ */
+ NGHTTP2_ERR_INVALID_HEADER_BLOCK = -518,
+ /**
+ * Indicates that the context is not suitable to perform the
+ * requested operation.
+ */
+ NGHTTP2_ERR_INVALID_STATE = -519,
+ /**
+ * The user callback function failed due to the temporal error.
+ */
+ NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE = -521,
+ /**
+ * The length of the frame is invalid, either too large or too small.
+ */
+ NGHTTP2_ERR_FRAME_SIZE_ERROR = -522,
+ /**
+ * Header block inflate/deflate error.
+ */
+ NGHTTP2_ERR_HEADER_COMP = -523,
+ /**
+ * Flow control error
+ */
+ NGHTTP2_ERR_FLOW_CONTROL = -524,
+ /**
+ * Insufficient buffer size given to function.
+ */
+ NGHTTP2_ERR_INSUFF_BUFSIZE = -525,
+ /**
+ * Callback was paused by the application
+ */
+ NGHTTP2_ERR_PAUSE = -526,
+ /**
+ * There are too many in-flight SETTING frame and no more
+ * transmission of SETTINGS is allowed.
+ */
+ NGHTTP2_ERR_TOO_MANY_INFLIGHT_SETTINGS = -527,
+ /**
+ * The server push is disabled.
+ */
+ NGHTTP2_ERR_PUSH_DISABLED = -528,
+ /**
+ * DATA or HEADERS frame for a given stream has been already
+ * submitted and has not been fully processed yet. Application
+ * should wait for the transmission of the previously submitted
+ * frame before submitting another.
+ */
+ NGHTTP2_ERR_DATA_EXIST = -529,
+ /**
+ * The current session is closing due to a connection error or
+ * `nghttp2_session_terminate_session()` is called.
+ */
+ NGHTTP2_ERR_SESSION_CLOSING = -530,
+ /**
+ * Invalid HTTP header field was received and stream is going to be
+ * closed.
+ */
+ NGHTTP2_ERR_HTTP_HEADER = -531,
+ /**
+ * Violation in HTTP messaging rule.
+ */
+ NGHTTP2_ERR_HTTP_MESSAGING = -532,
+ /**
+ * Stream was refused.
+ */
+ NGHTTP2_ERR_REFUSED_STREAM = -533,
+ /**
+ * Unexpected internal error, but recovered.
+ */
+ NGHTTP2_ERR_INTERNAL = -534,
+ /**
+ * Indicates that a processing was canceled.
+ */
+ NGHTTP2_ERR_CANCEL = -535,
+ /**
+ * The errors < :enum:`NGHTTP2_ERR_FATAL` mean that the library is
+ * under unexpected condition and processing was terminated (e.g.,
+ * out of memory). If application receives this error code, it must
+ * stop using that :type:`nghttp2_session` object and only allowed
+ * operation for that object is deallocate it using
+ * `nghttp2_session_del()`.
+ */
+ NGHTTP2_ERR_FATAL = -900,
+ /**
+ * Out of memory. This is a fatal error.
+ */
+ NGHTTP2_ERR_NOMEM = -901,
+ /**
+ * The user callback function failed. This is a fatal error.
+ */
+ NGHTTP2_ERR_CALLBACK_FAILURE = -902,
+ /**
+ * Invalid client magic (see :macro:`NGHTTP2_CLIENT_MAGIC`) was
+ * received and further processing is not possible.
+ */
+ NGHTTP2_ERR_BAD_CLIENT_MAGIC = -903,
+ /**
+ * Possible flooding by peer was detected in this HTTP/2 session.
+ * Flooding is measured by how many PING and SETTINGS frames with
+ * ACK flag set are queued for transmission. These frames are
+ * response for the peer initiated frames, and peer can cause memory
+ * exhaustion on server side to send these frames forever and does
+ * not read network.
+ */
+ NGHTTP2_ERR_FLOODED = -904
+} nghttp2_error;
+
+/**
+ * @struct
+ *
+ * The object representing single contiguous buffer.
+ */
+typedef struct {
+ /**
+ * The pointer to the buffer.
+ */
+ uint8_t *base;
+ /**
+ * The length of the buffer.
+ */
+ size_t len;
+} nghttp2_vec;
+
+struct nghttp2_rcbuf;
+
+/**
+ * @struct
+ *
+ * The object representing reference counted buffer. The details of
+ * this structure are intentionally hidden from the public API.
+ */
+typedef struct nghttp2_rcbuf nghttp2_rcbuf;
+
+/**
+ * @function
+ *
+ * Increments the reference count of |rcbuf| by 1.
+ */
+NGHTTP2_EXTERN void nghttp2_rcbuf_incref(nghttp2_rcbuf *rcbuf);
+
+/**
+ * @function
+ *
+ * Decrements the reference count of |rcbuf| by 1. If the reference
+ * count becomes zero, the object pointed by |rcbuf| will be freed.
+ * In this case, application must not use |rcbuf| again.
+ */
+NGHTTP2_EXTERN void nghttp2_rcbuf_decref(nghttp2_rcbuf *rcbuf);
+
+/**
+ * @function
+ *
+ * Returns the underlying buffer managed by |rcbuf|.
+ */
+NGHTTP2_EXTERN nghttp2_vec nghttp2_rcbuf_get_buf(nghttp2_rcbuf *rcbuf);
+
+/**
+ * @enum
+ *
+ * The flags for header field name/value pair.
+ */
+typedef enum {
+ /**
+ * No flag set.
+ */
+ NGHTTP2_NV_FLAG_NONE = 0,
+ /**
+ * Indicates that this name/value pair must not be indexed ("Literal
+ * Header Field never Indexed" representation must be used in HPACK
+ * encoding). Other implementation calls this bit as "sensitive".
+ */
+ NGHTTP2_NV_FLAG_NO_INDEX = 0x01,
+ /**
+ * This flag is set solely by application. If this flag is set, the
+ * library does not make a copy of header field name. This could
+ * improve performance.
+ */
+ NGHTTP2_NV_FLAG_NO_COPY_NAME = 0x02,
+ /**
+ * This flag is set solely by application. If this flag is set, the
+ * library does not make a copy of header field value. This could
+ * improve performance.
+ */
+ NGHTTP2_NV_FLAG_NO_COPY_VALUE = 0x04
+} nghttp2_nv_flag;
+
+/**
+ * @struct
+ *
+ * The name/value pair, which mainly used to represent header fields.
+ */
+typedef struct {
+ /**
+ * The |name| byte string. If this struct is presented from library
+ * (e.g., :type:`nghttp2_on_frame_recv_callback`), |name| is
+ * guaranteed to be NULL-terminated. For some callbacks
+ * (:type:`nghttp2_before_frame_send_callback`,
+ * :type:`nghttp2_on_frame_send_callback`, and
+ * :type:`nghttp2_on_frame_not_send_callback`), it may not be
+ * NULL-terminated if header field is passed from application with
+ * the flag :enum:`NGHTTP2_NV_FLAG_NO_COPY_NAME`). When application
+ * is constructing this struct, |name| is not required to be
+ * NULL-terminated.
+ */
+ uint8_t *name;
+ /**
+ * The |value| byte string. If this struct is presented from
+ * library (e.g., :type:`nghttp2_on_frame_recv_callback`), |value|
+ * is guaranteed to be NULL-terminated. For some callbacks
+ * (:type:`nghttp2_before_frame_send_callback`,
+ * :type:`nghttp2_on_frame_send_callback`, and
+ * :type:`nghttp2_on_frame_not_send_callback`), it may not be
+ * NULL-terminated if header field is passed from application with
+ * the flag :enum:`NGHTTP2_NV_FLAG_NO_COPY_VALUE`). When
+ * application is constructing this struct, |value| is not required
+ * to be NULL-terminated.
+ */
+ uint8_t *value;
+ /**
+ * The length of the |name|, excluding terminating NULL.
+ */
+ size_t namelen;
+ /**
+ * The length of the |value|, excluding terminating NULL.
+ */
+ size_t valuelen;
+ /**
+ * Bitwise OR of one or more of :type:`nghttp2_nv_flag`.
+ */
+ uint8_t flags;
+} nghttp2_nv;
+
+/**
+ * @enum
+ *
+ * The frame types in HTTP/2 specification.
+ */
+typedef enum {
+ /**
+ * The DATA frame.
+ */
+ NGHTTP2_DATA = 0,
+ /**
+ * The HEADERS frame.
+ */
+ NGHTTP2_HEADERS = 0x01,
+ /**
+ * The PRIORITY frame.
+ */
+ NGHTTP2_PRIORITY = 0x02,
+ /**
+ * The RST_STREAM frame.
+ */
+ NGHTTP2_RST_STREAM = 0x03,
+ /**
+ * The SETTINGS frame.
+ */
+ NGHTTP2_SETTINGS = 0x04,
+ /**
+ * The PUSH_PROMISE frame.
+ */
+ NGHTTP2_PUSH_PROMISE = 0x05,
+ /**
+ * The PING frame.
+ */
+ NGHTTP2_PING = 0x06,
+ /**
+ * The GOAWAY frame.
+ */
+ NGHTTP2_GOAWAY = 0x07,
+ /**
+ * The WINDOW_UPDATE frame.
+ */
+ NGHTTP2_WINDOW_UPDATE = 0x08,
+ /**
+ * The CONTINUATION frame. This frame type won't be passed to any
+ * callbacks because the library processes this frame type and its
+ * preceding HEADERS/PUSH_PROMISE as a single frame.
+ */
+ NGHTTP2_CONTINUATION = 0x09,
+ /**
+ * The ALTSVC frame, which is defined in `RFC 7383
+ * <https://tools.ietf.org/html/rfc7838#section-4>`_.
+ */
+ NGHTTP2_ALTSVC = 0x0a
+} nghttp2_frame_type;
+
+/**
+ * @enum
+ *
+ * The flags for HTTP/2 frames. This enum defines all flags for all
+ * frames.
+ */
+typedef enum {
+ /**
+ * No flag set.
+ */
+ NGHTTP2_FLAG_NONE = 0,
+ /**
+ * The END_STREAM flag.
+ */
+ NGHTTP2_FLAG_END_STREAM = 0x01,
+ /**
+ * The END_HEADERS flag.
+ */
+ NGHTTP2_FLAG_END_HEADERS = 0x04,
+ /**
+ * The ACK flag.
+ */
+ NGHTTP2_FLAG_ACK = 0x01,
+ /**
+ * The PADDED flag.
+ */
+ NGHTTP2_FLAG_PADDED = 0x08,
+ /**
+ * The PRIORITY flag.
+ */
+ NGHTTP2_FLAG_PRIORITY = 0x20
+} nghttp2_flag;
+
+/**
+ * @enum
+ * The SETTINGS ID.
+ */
+typedef enum {
+ /**
+ * SETTINGS_HEADER_TABLE_SIZE
+ */
+ NGHTTP2_SETTINGS_HEADER_TABLE_SIZE = 0x01,
+ /**
+ * SETTINGS_ENABLE_PUSH
+ */
+ NGHTTP2_SETTINGS_ENABLE_PUSH = 0x02,
+ /**
+ * SETTINGS_MAX_CONCURRENT_STREAMS
+ */
+ NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS = 0x03,
+ /**
+ * SETTINGS_INITIAL_WINDOW_SIZE
+ */
+ NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE = 0x04,
+ /**
+ * SETTINGS_MAX_FRAME_SIZE
+ */
+ NGHTTP2_SETTINGS_MAX_FRAME_SIZE = 0x05,
+ /**
+ * SETTINGS_MAX_HEADER_LIST_SIZE
+ */
+ NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE = 0x06
+} nghttp2_settings_id;
+/* Note: If we add SETTINGS, update the capacity of
+ NGHTTP2_INBOUND_NUM_IV as well */
+
+/**
+ * @macro
+ *
+ * .. warning::
+ *
+ * Deprecated. The initial max concurrent streams is 0xffffffffu.
+ *
+ * Default maximum number of incoming concurrent streams. Use
+ * `nghttp2_submit_settings()` with
+ * :enum:`NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS` to change the
+ * maximum number of incoming concurrent streams.
+ *
+ * .. note::
+ *
+ * The maximum number of outgoing concurrent streams is 100 by
+ * default.
+ */
+#define NGHTTP2_INITIAL_MAX_CONCURRENT_STREAMS ((1U << 31) - 1)
+
+/**
+ * @enum
+ * The status codes for the RST_STREAM and GOAWAY frames.
+ */
+typedef enum {
+ /**
+ * No errors.
+ */
+ NGHTTP2_NO_ERROR = 0x00,
+ /**
+ * PROTOCOL_ERROR
+ */
+ NGHTTP2_PROTOCOL_ERROR = 0x01,
+ /**
+ * INTERNAL_ERROR
+ */
+ NGHTTP2_INTERNAL_ERROR = 0x02,
+ /**
+ * FLOW_CONTROL_ERROR
+ */
+ NGHTTP2_FLOW_CONTROL_ERROR = 0x03,
+ /**
+ * SETTINGS_TIMEOUT
+ */
+ NGHTTP2_SETTINGS_TIMEOUT = 0x04,
+ /**
+ * STREAM_CLOSED
+ */
+ NGHTTP2_STREAM_CLOSED = 0x05,
+ /**
+ * FRAME_SIZE_ERROR
+ */
+ NGHTTP2_FRAME_SIZE_ERROR = 0x06,
+ /**
+ * REFUSED_STREAM
+ */
+ NGHTTP2_REFUSED_STREAM = 0x07,
+ /**
+ * CANCEL
+ */
+ NGHTTP2_CANCEL = 0x08,
+ /**
+ * COMPRESSION_ERROR
+ */
+ NGHTTP2_COMPRESSION_ERROR = 0x09,
+ /**
+ * CONNECT_ERROR
+ */
+ NGHTTP2_CONNECT_ERROR = 0x0a,
+ /**
+ * ENHANCE_YOUR_CALM
+ */
+ NGHTTP2_ENHANCE_YOUR_CALM = 0x0b,
+ /**
+ * INADEQUATE_SECURITY
+ */
+ NGHTTP2_INADEQUATE_SECURITY = 0x0c,
+ /**
+ * HTTP_1_1_REQUIRED
+ */
+ NGHTTP2_HTTP_1_1_REQUIRED = 0x0d
+} nghttp2_error_code;
+
+/**
+ * @struct
+ * The frame header.
+ */
+typedef struct {
+ /**
+ * The length field of this frame, excluding frame header.
+ */
+ size_t length;
+ /**
+ * The stream identifier (aka, stream ID)
+ */
+ int32_t stream_id;
+ /**
+ * The type of this frame. See `nghttp2_frame_type`.
+ */
+ uint8_t type;
+ /**
+ * The flags.
+ */
+ uint8_t flags;
+ /**
+ * Reserved bit in frame header. Currently, this is always set to 0
+ * and application should not expect something useful in here.
+ */
+ uint8_t reserved;
+} nghttp2_frame_hd;
+
+/**
+ * @union
+ *
+ * This union represents the some kind of data source passed to
+ * :type:`nghttp2_data_source_read_callback`.
+ */
+typedef union {
+ /**
+ * The integer field, suitable for a file descriptor.
+ */
+ int fd;
+ /**
+ * The pointer to an arbitrary object.
+ */
+ void *ptr;
+} nghttp2_data_source;
+
+/**
+ * @enum
+ *
+ * The flags used to set in |data_flags| output parameter in
+ * :type:`nghttp2_data_source_read_callback`.
+ */
+typedef enum {
+ /**
+ * No flag set.
+ */
+ NGHTTP2_DATA_FLAG_NONE = 0,
+ /**
+ * Indicates EOF was sensed.
+ */
+ NGHTTP2_DATA_FLAG_EOF = 0x01,
+ /**
+ * Indicates that END_STREAM flag must not be set even if
+ * NGHTTP2_DATA_FLAG_EOF is set. Usually this flag is used to send
+ * trailer fields with `nghttp2_submit_request()` or
+ * `nghttp2_submit_response()`.
+ */
+ NGHTTP2_DATA_FLAG_NO_END_STREAM = 0x02,
+ /**
+ * Indicates that application will send complete DATA frame in
+ * :type:`nghttp2_send_data_callback`.
+ */
+ NGHTTP2_DATA_FLAG_NO_COPY = 0x04
+} nghttp2_data_flag;
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when the library wants to read data from
+ * the |source|. The read data is sent in the stream |stream_id|.
+ * The implementation of this function must read at most |length|
+ * bytes of data from |source| (or possibly other places) and store
+ * them in |buf| and return number of data stored in |buf|. If EOF is
+ * reached, set :enum:`NGHTTP2_DATA_FLAG_EOF` flag in |*data_flags|.
+ *
+ * Sometime it is desirable to avoid copying data into |buf| and let
+ * application to send data directly. To achieve this, set
+ * :enum:`NGHTTP2_DATA_FLAG_NO_COPY` to |*data_flags| (and possibly
+ * other flags, just like when we do copy), and return the number of
+ * bytes to send without copying data into |buf|. The library, seeing
+ * :enum:`NGHTTP2_DATA_FLAG_NO_COPY`, will invoke
+ * :type:`nghttp2_send_data_callback`. The application must send
+ * complete DATA frame in that callback.
+ *
+ * If this callback is set by `nghttp2_submit_request()`,
+ * `nghttp2_submit_response()` or `nghttp2_submit_headers()` and
+ * `nghttp2_submit_data()` with flag parameter
+ * :enum:`NGHTTP2_FLAG_END_STREAM` set, and
+ * :enum:`NGHTTP2_DATA_FLAG_EOF` flag is set to |*data_flags|, DATA
+ * frame will have END_STREAM flag set. Usually, this is expected
+ * behaviour and all are fine. One exception is send trailer fields.
+ * You cannot send trailer fields after sending frame with END_STREAM
+ * set. To avoid this problem, one can set
+ * :enum:`NGHTTP2_DATA_FLAG_NO_END_STREAM` along with
+ * :enum:`NGHTTP2_DATA_FLAG_EOF` to signal the library not to set
+ * END_STREAM in DATA frame. Then application can use
+ * `nghttp2_submit_trailer()` to send trailer fields.
+ * `nghttp2_submit_trailer()` can be called inside this callback.
+ *
+ * If the application wants to postpone DATA frames (e.g.,
+ * asynchronous I/O, or reading data blocks for long time), it is
+ * achieved by returning :enum:`NGHTTP2_ERR_DEFERRED` without reading
+ * any data in this invocation. The library removes DATA frame from
+ * the outgoing queue temporarily. To move back deferred DATA frame
+ * to outgoing queue, call `nghttp2_session_resume_data()`. In case
+ * of error, there are 2 choices. Returning
+ * :enum:`NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE` will close the stream
+ * by issuing RST_STREAM with :enum:`NGHTTP2_INTERNAL_ERROR`. If a
+ * different error code is desirable, use
+ * `nghttp2_submit_rst_stream()` with a desired error code and then
+ * return :enum:`NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE`. Returning
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE` will signal the entire session
+ * failure.
+ */
+typedef ssize_t (*nghttp2_data_source_read_callback)(
+ nghttp2_session *session, int32_t stream_id, uint8_t *buf, size_t length,
+ uint32_t *data_flags, nghttp2_data_source *source, void *user_data);
+
+/**
+ * @struct
+ *
+ * This struct represents the data source and the way to read a chunk
+ * of data from it.
+ */
+typedef struct {
+ /**
+ * The data source.
+ */
+ nghttp2_data_source source;
+ /**
+ * The callback function to read a chunk of data from the |source|.
+ */
+ nghttp2_data_source_read_callback read_callback;
+} nghttp2_data_provider;
+
+/**
+ * @struct
+ *
+ * The DATA frame. The received data is delivered via
+ * :type:`nghttp2_on_data_chunk_recv_callback`.
+ */
+typedef struct {
+ nghttp2_frame_hd hd;
+ /**
+ * The length of the padding in this frame. This includes PAD_HIGH
+ * and PAD_LOW.
+ */
+ size_t padlen;
+} nghttp2_data;
+
+/**
+ * @enum
+ *
+ * The category of HEADERS, which indicates the role of the frame. In
+ * HTTP/2 spec, request, response, push response and other arbitrary
+ * headers (e.g., trailer fields) are all called just HEADERS. To
+ * give the application the role of incoming HEADERS frame, we define
+ * several categories.
+ */
+typedef enum {
+ /**
+ * The HEADERS frame is opening new stream, which is analogous to
+ * SYN_STREAM in SPDY.
+ */
+ NGHTTP2_HCAT_REQUEST = 0,
+ /**
+ * The HEADERS frame is the first response headers, which is
+ * analogous to SYN_REPLY in SPDY.
+ */
+ NGHTTP2_HCAT_RESPONSE = 1,
+ /**
+ * The HEADERS frame is the first headers sent against reserved
+ * stream.
+ */
+ NGHTTP2_HCAT_PUSH_RESPONSE = 2,
+ /**
+ * The HEADERS frame which does not apply for the above categories,
+ * which is analogous to HEADERS in SPDY. If non-final response
+ * (e.g., status 1xx) is used, final response HEADERS frame will be
+ * categorized here.
+ */
+ NGHTTP2_HCAT_HEADERS = 3
+} nghttp2_headers_category;
+
+/**
+ * @struct
+ *
+ * The structure to specify stream dependency.
+ */
+typedef struct {
+ /**
+ * The stream ID of the stream to depend on. Specifying 0 makes
+ * stream not depend any other stream.
+ */
+ int32_t stream_id;
+ /**
+ * The weight of this dependency.
+ */
+ int32_t weight;
+ /**
+ * nonzero means exclusive dependency
+ */
+ uint8_t exclusive;
+} nghttp2_priority_spec;
+
+/**
+ * @struct
+ *
+ * The HEADERS frame. It has the following members:
+ */
+typedef struct {
+ /**
+ * The frame header.
+ */
+ nghttp2_frame_hd hd;
+ /**
+ * The length of the padding in this frame. This includes PAD_HIGH
+ * and PAD_LOW.
+ */
+ size_t padlen;
+ /**
+ * The priority specification
+ */
+ nghttp2_priority_spec pri_spec;
+ /**
+ * The name/value pairs.
+ */
+ nghttp2_nv *nva;
+ /**
+ * The number of name/value pairs in |nva|.
+ */
+ size_t nvlen;
+ /**
+ * The category of this HEADERS frame.
+ */
+ nghttp2_headers_category cat;
+} nghttp2_headers;
+
+/**
+ * @struct
+ *
+ * The PRIORITY frame. It has the following members:
+ */
+typedef struct {
+ /**
+ * The frame header.
+ */
+ nghttp2_frame_hd hd;
+ /**
+ * The priority specification.
+ */
+ nghttp2_priority_spec pri_spec;
+} nghttp2_priority;
+
+/**
+ * @struct
+ *
+ * The RST_STREAM frame. It has the following members:
+ */
+typedef struct {
+ /**
+ * The frame header.
+ */
+ nghttp2_frame_hd hd;
+ /**
+ * The error code. See :type:`nghttp2_error_code`.
+ */
+ uint32_t error_code;
+} nghttp2_rst_stream;
+
+/**
+ * @struct
+ *
+ * The SETTINGS ID/Value pair. It has the following members:
+ */
+typedef struct {
+ /**
+ * The SETTINGS ID. See :type:`nghttp2_settings_id`.
+ */
+ int32_t settings_id;
+ /**
+ * The value of this entry.
+ */
+ uint32_t value;
+} nghttp2_settings_entry;
+
+/**
+ * @struct
+ *
+ * The SETTINGS frame. It has the following members:
+ */
+typedef struct {
+ /**
+ * The frame header.
+ */
+ nghttp2_frame_hd hd;
+ /**
+ * The number of SETTINGS ID/Value pairs in |iv|.
+ */
+ size_t niv;
+ /**
+ * The pointer to the array of SETTINGS ID/Value pair.
+ */
+ nghttp2_settings_entry *iv;
+} nghttp2_settings;
+
+/**
+ * @struct
+ *
+ * The PUSH_PROMISE frame. It has the following members:
+ */
+typedef struct {
+ /**
+ * The frame header.
+ */
+ nghttp2_frame_hd hd;
+ /**
+ * The length of the padding in this frame. This includes PAD_HIGH
+ * and PAD_LOW.
+ */
+ size_t padlen;
+ /**
+ * The name/value pairs.
+ */
+ nghttp2_nv *nva;
+ /**
+ * The number of name/value pairs in |nva|.
+ */
+ size_t nvlen;
+ /**
+ * The promised stream ID
+ */
+ int32_t promised_stream_id;
+ /**
+ * Reserved bit. Currently this is always set to 0 and application
+ * should not expect something useful in here.
+ */
+ uint8_t reserved;
+} nghttp2_push_promise;
+
+/**
+ * @struct
+ *
+ * The PING frame. It has the following members:
+ */
+typedef struct {
+ /**
+ * The frame header.
+ */
+ nghttp2_frame_hd hd;
+ /**
+ * The opaque data
+ */
+ uint8_t opaque_data[8];
+} nghttp2_ping;
+
+/**
+ * @struct
+ *
+ * The GOAWAY frame. It has the following members:
+ */
+typedef struct {
+ /**
+ * The frame header.
+ */
+ nghttp2_frame_hd hd;
+ /**
+ * The last stream stream ID.
+ */
+ int32_t last_stream_id;
+ /**
+ * The error code. See :type:`nghttp2_error_code`.
+ */
+ uint32_t error_code;
+ /**
+ * The additional debug data
+ */
+ uint8_t *opaque_data;
+ /**
+ * The length of |opaque_data| member.
+ */
+ size_t opaque_data_len;
+ /**
+ * Reserved bit. Currently this is always set to 0 and application
+ * should not expect something useful in here.
+ */
+ uint8_t reserved;
+} nghttp2_goaway;
+
+/**
+ * @struct
+ *
+ * The WINDOW_UPDATE frame. It has the following members:
+ */
+typedef struct {
+ /**
+ * The frame header.
+ */
+ nghttp2_frame_hd hd;
+ /**
+ * The window size increment.
+ */
+ int32_t window_size_increment;
+ /**
+ * Reserved bit. Currently this is always set to 0 and application
+ * should not expect something useful in here.
+ */
+ uint8_t reserved;
+} nghttp2_window_update;
+
+/**
+ * @struct
+ *
+ * The extension frame. It has following members:
+ */
+typedef struct {
+ /**
+ * The frame header.
+ */
+ nghttp2_frame_hd hd;
+ /**
+ * The pointer to extension payload. The exact pointer type is
+ * determined by hd.type.
+ *
+ * Currently, no extension is supported. This is a place holder for
+ * the future extensions.
+ */
+ void *payload;
+} nghttp2_extension;
+
+/**
+ * @union
+ *
+ * This union includes all frames to pass them to various function
+ * calls as nghttp2_frame type. The CONTINUATION frame is omitted
+ * from here because the library deals with it internally.
+ */
+typedef union {
+ /**
+ * The frame header, which is convenient to inspect frame header.
+ */
+ nghttp2_frame_hd hd;
+ /**
+ * The DATA frame.
+ */
+ nghttp2_data data;
+ /**
+ * The HEADERS frame.
+ */
+ nghttp2_headers headers;
+ /**
+ * The PRIORITY frame.
+ */
+ nghttp2_priority priority;
+ /**
+ * The RST_STREAM frame.
+ */
+ nghttp2_rst_stream rst_stream;
+ /**
+ * The SETTINGS frame.
+ */
+ nghttp2_settings settings;
+ /**
+ * The PUSH_PROMISE frame.
+ */
+ nghttp2_push_promise push_promise;
+ /**
+ * The PING frame.
+ */
+ nghttp2_ping ping;
+ /**
+ * The GOAWAY frame.
+ */
+ nghttp2_goaway goaway;
+ /**
+ * The WINDOW_UPDATE frame.
+ */
+ nghttp2_window_update window_update;
+ /**
+ * The extension frame.
+ */
+ nghttp2_extension ext;
+} nghttp2_frame;
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when |session| wants to send data to the
+ * remote peer. The implementation of this function must send at most
+ * |length| bytes of data stored in |data|. The |flags| is currently
+ * not used and always 0. It must return the number of bytes sent if
+ * it succeeds. If it cannot send any single byte without blocking,
+ * it must return :enum:`NGHTTP2_ERR_WOULDBLOCK`. For other errors,
+ * it must return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. The
+ * |user_data| pointer is the third argument passed in to the call to
+ * `nghttp2_session_client_new()` or `nghttp2_session_server_new()`.
+ *
+ * This callback is required if the application uses
+ * `nghttp2_session_send()` to send data to the remote endpoint. If
+ * the application uses solely `nghttp2_session_mem_send()` instead,
+ * this callback function is unnecessary.
+ *
+ * To set this callback to :type:`nghttp2_session_callbacks`, use
+ * `nghttp2_session_callbacks_set_send_callback()`.
+ *
+ * .. note::
+ *
+ * The |length| may be very small. If that is the case, and
+ * application disables Nagle algorithm (``TCP_NODELAY``), then just
+ * writing |data| to the network stack leads to very small packet,
+ * and it is very inefficient. An application should be responsible
+ * to buffer up small chunks of data as necessary to avoid this
+ * situation.
+ */
+typedef ssize_t (*nghttp2_send_callback)(nghttp2_session *session,
+ const uint8_t *data, size_t length,
+ int flags, void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when :enum:`NGHTTP2_DATA_FLAG_NO_COPY` is
+ * used in :type:`nghttp2_data_source_read_callback` to send complete
+ * DATA frame.
+ *
+ * The |frame| is a DATA frame to send. The |framehd| is the
+ * serialized frame header (9 bytes). The |length| is the length of
+ * application data to send (this does not include padding). The
+ * |source| is the same pointer passed to
+ * :type:`nghttp2_data_source_read_callback`.
+ *
+ * The application first must send frame header |framehd| of length 9
+ * bytes. If ``frame->data.padlen > 0``, send 1 byte of value
+ * ``frame->data.padlen - 1``. Then send exactly |length| bytes of
+ * application data. Finally, if ``frame->data.padlen > 1``, send
+ * ``frame->data.padlen - 1`` bytes of zero as padding.
+ *
+ * The application has to send complete DATA frame in this callback.
+ * If all data were written successfully, return 0.
+ *
+ * If it cannot send any data at all, just return
+ * :enum:`NGHTTP2_ERR_WOULDBLOCK`; the library will call this callback
+ * with the same parameters later (It is recommended to send complete
+ * DATA frame at once in this function to deal with error; if partial
+ * frame data has already sent, it is impossible to send another data
+ * in that state, and all we can do is tear down connection). When
+ * data is fully processed, but application wants to make
+ * `nghttp2_session_mem_send()` or `nghttp2_session_send()` return
+ * immediately without processing next frames, return
+ * :enum:`NGHTTP2_ERR_PAUSE`. If application decided to reset this
+ * stream, return :enum:`NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE`, then
+ * the library will send RST_STREAM with INTERNAL_ERROR as error code.
+ * The application can also return
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`, which will result in
+ * connection closure. Returning any other value is treated as
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE` is returned.
+ */
+typedef int (*nghttp2_send_data_callback)(nghttp2_session *session,
+ nghttp2_frame *frame,
+ const uint8_t *framehd, size_t length,
+ nghttp2_data_source *source,
+ void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when |session| wants to receive data from
+ * the remote peer. The implementation of this function must read at
+ * most |length| bytes of data and store it in |buf|. The |flags| is
+ * currently not used and always 0. It must return the number of
+ * bytes written in |buf| if it succeeds. If it cannot read any
+ * single byte without blocking, it must return
+ * :enum:`NGHTTP2_ERR_WOULDBLOCK`. If it gets EOF before it reads any
+ * single byte, it must return :enum:`NGHTTP2_ERR_EOF`. For other
+ * errors, it must return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ * Returning 0 is treated as :enum:`NGHTTP2_ERR_WOULDBLOCK`. The
+ * |user_data| pointer is the third argument passed in to the call to
+ * `nghttp2_session_client_new()` or `nghttp2_session_server_new()`.
+ *
+ * This callback is required if the application uses
+ * `nghttp2_session_recv()` to receive data from the remote endpoint.
+ * If the application uses solely `nghttp2_session_mem_recv()`
+ * instead, this callback function is unnecessary.
+ *
+ * To set this callback to :type:`nghttp2_session_callbacks`, use
+ * `nghttp2_session_callbacks_set_recv_callback()`.
+ */
+typedef ssize_t (*nghttp2_recv_callback)(nghttp2_session *session, uint8_t *buf,
+ size_t length, int flags,
+ void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked by `nghttp2_session_recv()` and
+ * `nghttp2_session_mem_recv()` when a frame is received. The
+ * |user_data| pointer is the third argument passed in to the call to
+ * `nghttp2_session_client_new()` or `nghttp2_session_server_new()`.
+ *
+ * If frame is HEADERS or PUSH_PROMISE, the ``nva`` and ``nvlen``
+ * member of their data structure are always ``NULL`` and 0
+ * respectively. The header name/value pairs are emitted via
+ * :type:`nghttp2_on_header_callback`.
+ *
+ * For HEADERS, PUSH_PROMISE and DATA frames, this callback may be
+ * called after stream is closed (see
+ * :type:`nghttp2_on_stream_close_callback`). The application should
+ * check that stream is still alive using its own stream management or
+ * :func:`nghttp2_session_get_stream_user_data()`.
+ *
+ * Only HEADERS and DATA frame can signal the end of incoming data.
+ * If ``frame->hd.flags & NGHTTP2_FLAG_END_STREAM`` is nonzero, the
+ * |frame| is the last frame from the remote peer in this stream.
+ *
+ * This callback won't be called for CONTINUATION frames.
+ * HEADERS/PUSH_PROMISE + CONTINUATIONs are treated as single frame.
+ *
+ * The implementation of this function must return 0 if it succeeds.
+ * If nonzero value is returned, it is treated as fatal error and
+ * `nghttp2_session_recv()` and `nghttp2_session_mem_recv()` functions
+ * immediately return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ *
+ * To set this callback to :type:`nghttp2_session_callbacks`, use
+ * `nghttp2_session_callbacks_set_on_frame_recv_callback()`.
+ */
+typedef int (*nghttp2_on_frame_recv_callback)(nghttp2_session *session,
+ const nghttp2_frame *frame,
+ void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked by `nghttp2_session_recv()` and
+ * `nghttp2_session_mem_recv()` when an invalid non-DATA frame is
+ * received. The error is indicated by the |lib_error_code|, which is
+ * one of the values defined in :type:`nghttp2_error`. When this
+ * callback function is invoked, the library automatically submits
+ * either RST_STREAM or GOAWAY frame. The |user_data| pointer is the
+ * third argument passed in to the call to
+ * `nghttp2_session_client_new()` or `nghttp2_session_server_new()`.
+ *
+ * If frame is HEADERS or PUSH_PROMISE, the ``nva`` and ``nvlen``
+ * member of their data structure are always ``NULL`` and 0
+ * respectively.
+ *
+ * The implementation of this function must return 0 if it succeeds.
+ * If nonzero is returned, it is treated as fatal error and
+ * `nghttp2_session_recv()` and `nghttp2_session_mem_recv()` functions
+ * immediately return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ *
+ * To set this callback to :type:`nghttp2_session_callbacks`, use
+ * `nghttp2_session_callbacks_set_on_invalid_frame_recv_callback()`.
+ */
+typedef int (*nghttp2_on_invalid_frame_recv_callback)(
+ nghttp2_session *session, const nghttp2_frame *frame, int lib_error_code,
+ void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when a chunk of data in DATA frame is
+ * received. The |stream_id| is the stream ID this DATA frame belongs
+ * to. The |flags| is the flags of DATA frame which this data chunk
+ * is contained. ``(flags & NGHTTP2_FLAG_END_STREAM) != 0`` does not
+ * necessarily mean this chunk of data is the last one in the stream.
+ * You should use :type:`nghttp2_on_frame_recv_callback` to know all
+ * data frames are received. The |user_data| pointer is the third
+ * argument passed in to the call to `nghttp2_session_client_new()` or
+ * `nghttp2_session_server_new()`.
+ *
+ * If the application uses `nghttp2_session_mem_recv()`, it can return
+ * :enum:`NGHTTP2_ERR_PAUSE` to make `nghttp2_session_mem_recv()`
+ * return without processing further input bytes. The memory by
+ * pointed by the |data| is retained until
+ * `nghttp2_session_mem_recv()` or `nghttp2_session_recv()` is called.
+ * The application must retain the input bytes which was used to
+ * produce the |data| parameter, because it may refer to the memory
+ * region included in the input bytes.
+ *
+ * The implementation of this function must return 0 if it succeeds.
+ * If nonzero is returned, it is treated as fatal error, and
+ * `nghttp2_session_recv()` and `nghttp2_session_mem_recv()` functions
+ * immediately return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ *
+ * To set this callback to :type:`nghttp2_session_callbacks`, use
+ * `nghttp2_session_callbacks_set_on_data_chunk_recv_callback()`.
+ */
+typedef int (*nghttp2_on_data_chunk_recv_callback)(nghttp2_session *session,
+ uint8_t flags,
+ int32_t stream_id,
+ const uint8_t *data,
+ size_t len, void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked just before the non-DATA frame |frame| is
+ * sent. The |user_data| pointer is the third argument passed in to
+ * the call to `nghttp2_session_client_new()` or
+ * `nghttp2_session_server_new()`.
+ *
+ * The implementation of this function must return 0 if it succeeds.
+ * It can also return :enum:`NGHTTP2_ERR_CANCEL` to cancel the
+ * transmission of the given frame.
+ *
+ * If there is a fatal error while executing this callback, the
+ * implementation should return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`,
+ * which makes `nghttp2_session_send()` and
+ * `nghttp2_session_mem_send()` functions immediately return
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ *
+ * If the other value is returned, it is treated as if
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE` is returned. But the
+ * implementation should not rely on this since the library may define
+ * new return value to extend its capability.
+ *
+ * To set this callback to :type:`nghttp2_session_callbacks`, use
+ * `nghttp2_session_callbacks_set_before_frame_send_callback()`.
+ */
+typedef int (*nghttp2_before_frame_send_callback)(nghttp2_session *session,
+ const nghttp2_frame *frame,
+ void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked after the frame |frame| is sent. The
+ * |user_data| pointer is the third argument passed in to the call to
+ * `nghttp2_session_client_new()` or `nghttp2_session_server_new()`.
+ *
+ * The implementation of this function must return 0 if it succeeds.
+ * If nonzero is returned, it is treated as fatal error and
+ * `nghttp2_session_send()` and `nghttp2_session_mem_send()` functions
+ * immediately return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ *
+ * To set this callback to :type:`nghttp2_session_callbacks`, use
+ * `nghttp2_session_callbacks_set_on_frame_send_callback()`.
+ */
+typedef int (*nghttp2_on_frame_send_callback)(nghttp2_session *session,
+ const nghttp2_frame *frame,
+ void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked after the non-DATA frame |frame| is not
+ * sent because of the error. The error is indicated by the
+ * |lib_error_code|, which is one of the values defined in
+ * :type:`nghttp2_error`. The |user_data| pointer is the third
+ * argument passed in to the call to `nghttp2_session_client_new()` or
+ * `nghttp2_session_server_new()`.
+ *
+ * The implementation of this function must return 0 if it succeeds.
+ * If nonzero is returned, it is treated as fatal error and
+ * `nghttp2_session_send()` and `nghttp2_session_mem_send()` functions
+ * immediately return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ *
+ * `nghttp2_session_get_stream_user_data()` can be used to get
+ * associated data.
+ *
+ * To set this callback to :type:`nghttp2_session_callbacks`, use
+ * `nghttp2_session_callbacks_set_on_frame_not_send_callback()`.
+ */
+typedef int (*nghttp2_on_frame_not_send_callback)(nghttp2_session *session,
+ const nghttp2_frame *frame,
+ int lib_error_code,
+ void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when the stream |stream_id| is closed.
+ * The reason of closure is indicated by the |error_code|. The
+ * |error_code| is usually one of :enum:`nghttp2_error_code`, but that
+ * is not guaranteed. The stream_user_data, which was specified in
+ * `nghttp2_submit_request()` or `nghttp2_submit_headers()`, is still
+ * available in this function. The |user_data| pointer is the third
+ * argument passed in to the call to `nghttp2_session_client_new()` or
+ * `nghttp2_session_server_new()`.
+ *
+ * This function is also called for a stream in reserved state.
+ *
+ * The implementation of this function must return 0 if it succeeds.
+ * If nonzero is returned, it is treated as fatal error and
+ * `nghttp2_session_recv()`, `nghttp2_session_mem_recv()`,
+ * `nghttp2_session_send()`, and `nghttp2_session_mem_send()`
+ * functions immediately return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ *
+ * To set this callback to :type:`nghttp2_session_callbacks`, use
+ * `nghttp2_session_callbacks_set_on_stream_close_callback()`.
+ */
+typedef int (*nghttp2_on_stream_close_callback)(nghttp2_session *session,
+ int32_t stream_id,
+ uint32_t error_code,
+ void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when the reception of header block in
+ * HEADERS or PUSH_PROMISE is started. Each header name/value pair
+ * will be emitted by :type:`nghttp2_on_header_callback`.
+ *
+ * The ``frame->hd.flags`` may not have
+ * :enum:`NGHTTP2_FLAG_END_HEADERS` flag set, which indicates that one
+ * or more CONTINUATION frames are involved. But the application does
+ * not need to care about that because the header name/value pairs are
+ * emitted transparently regardless of CONTINUATION frames.
+ *
+ * The server applications probably create an object to store
+ * information about new stream if ``frame->hd.type ==
+ * NGHTTP2_HEADERS`` and ``frame->headers.cat ==
+ * NGHTTP2_HCAT_REQUEST``. If |session| is configured as server side,
+ * ``frame->headers.cat`` is either ``NGHTTP2_HCAT_REQUEST``
+ * containing request headers or ``NGHTTP2_HCAT_HEADERS`` containing
+ * trailer fields and never get PUSH_PROMISE in this callback.
+ *
+ * For the client applications, ``frame->hd.type`` is either
+ * ``NGHTTP2_HEADERS`` or ``NGHTTP2_PUSH_PROMISE``. In case of
+ * ``NGHTTP2_HEADERS``, ``frame->headers.cat ==
+ * NGHTTP2_HCAT_RESPONSE`` means that it is the first response
+ * headers, but it may be non-final response which is indicated by 1xx
+ * status code. In this case, there may be zero or more HEADERS frame
+ * with ``frame->headers.cat == NGHTTP2_HCAT_HEADERS`` which has
+ * non-final response code and finally client gets exactly one HEADERS
+ * frame with ``frame->headers.cat == NGHTTP2_HCAT_HEADERS``
+ * containing final response headers (non-1xx status code). The
+ * trailer fields also has ``frame->headers.cat ==
+ * NGHTTP2_HCAT_HEADERS`` which does not contain any status code.
+ *
+ * Returning :enum:`NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE` will close
+ * the stream (promised stream if frame is PUSH_PROMISE) by issuing
+ * RST_STREAM with :enum:`NGHTTP2_INTERNAL_ERROR`. In this case,
+ * :type:`nghttp2_on_header_callback` and
+ * :type:`nghttp2_on_frame_recv_callback` will not be invoked. If a
+ * different error code is desirable, use
+ * `nghttp2_submit_rst_stream()` with a desired error code and then
+ * return :enum:`NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE`. Again, use
+ * ``frame->push_promise.promised_stream_id`` as stream_id parameter
+ * in `nghttp2_submit_rst_stream()` if frame is PUSH_PROMISE.
+ *
+ * The implementation of this function must return 0 if it succeeds.
+ * It can return :enum:`NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE` to
+ * reset the stream (promised stream if frame is PUSH_PROMISE). For
+ * critical errors, it must return
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. If the other value is
+ * returned, it is treated as if :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`
+ * is returned. If :enum:`NGHTTP2_ERR_CALLBACK_FAILURE` is returned,
+ * `nghttp2_session_mem_recv()` function will immediately return
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ *
+ * To set this callback to :type:`nghttp2_session_callbacks`, use
+ * `nghttp2_session_callbacks_set_on_begin_headers_callback()`.
+ */
+typedef int (*nghttp2_on_begin_headers_callback)(nghttp2_session *session,
+ const nghttp2_frame *frame,
+ void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when a header name/value pair is received
+ * for the |frame|. The |name| of length |namelen| is header name.
+ * The |value| of length |valuelen| is header value. The |flags| is
+ * bitwise OR of one or more of :type:`nghttp2_nv_flag`.
+ *
+ * If :enum:`NGHTTP2_NV_FLAG_NO_INDEX` is set in |flags|, the receiver
+ * must not index this name/value pair when forwarding it to the next
+ * hop. More specifically, "Literal Header Field never Indexed"
+ * representation must be used in HPACK encoding.
+ *
+ * When this callback is invoked, ``frame->hd.type`` is either
+ * :enum:`NGHTTP2_HEADERS` or :enum:`NGHTTP2_PUSH_PROMISE`. After all
+ * header name/value pairs are processed with this callback, and no
+ * error has been detected, :type:`nghttp2_on_frame_recv_callback`
+ * will be invoked. If there is an error in decompression,
+ * :type:`nghttp2_on_frame_recv_callback` for the |frame| will not be
+ * invoked.
+ *
+ * Both |name| and |value| are guaranteed to be NULL-terminated. The
+ * |namelen| and |valuelen| do not include terminal NULL. If
+ * `nghttp2_option_set_no_http_messaging()` is used with nonzero
+ * value, NULL character may be included in |name| or |value| before
+ * terminating NULL.
+ *
+ * Please note that unless `nghttp2_option_set_no_http_messaging()` is
+ * used, nghttp2 library does perform validation against the |name|
+ * and the |value| using `nghttp2_check_header_name()` and
+ * `nghttp2_check_header_value()`. In addition to this, nghttp2
+ * performs validation based on HTTP Messaging rule, which is briefly
+ * explained in :ref:`http-messaging` section.
+ *
+ * If the application uses `nghttp2_session_mem_recv()`, it can return
+ * :enum:`NGHTTP2_ERR_PAUSE` to make `nghttp2_session_mem_recv()`
+ * return without processing further input bytes. The memory pointed
+ * by |frame|, |name| and |value| parameters are retained until
+ * `nghttp2_session_mem_recv()` or `nghttp2_session_recv()` is called.
+ * The application must retain the input bytes which was used to
+ * produce these parameters, because it may refer to the memory region
+ * included in the input bytes.
+ *
+ * Returning :enum:`NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE` will close
+ * the stream (promised stream if frame is PUSH_PROMISE) by issuing
+ * RST_STREAM with :enum:`NGHTTP2_INTERNAL_ERROR`. In this case,
+ * :type:`nghttp2_on_header_callback` and
+ * :type:`nghttp2_on_frame_recv_callback` will not be invoked. If a
+ * different error code is desirable, use
+ * `nghttp2_submit_rst_stream()` with a desired error code and then
+ * return :enum:`NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE`. Again, use
+ * ``frame->push_promise.promised_stream_id`` as stream_id parameter
+ * in `nghttp2_submit_rst_stream()` if frame is PUSH_PROMISE.
+ *
+ * The implementation of this function must return 0 if it succeeds.
+ * It may return :enum:`NGHTTP2_ERR_PAUSE` or
+ * :enum:`NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE`. For other critical
+ * failures, it must return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. If
+ * the other nonzero value is returned, it is treated as
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. If
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE` is returned,
+ * `nghttp2_session_recv()` and `nghttp2_session_mem_recv()` functions
+ * immediately return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ *
+ * To set this callback to :type:`nghttp2_session_callbacks`, use
+ * `nghttp2_session_callbacks_set_on_header_callback()`.
+ *
+ * .. warning::
+ *
+ * Application should properly limit the total buffer size to store
+ * incoming header fields. Without it, peer may send large number
+ * of header fields or large header fields to cause out of memory in
+ * local endpoint. Due to how HPACK works, peer can do this
+ * effectively without using much memory on their own.
+ */
+typedef int (*nghttp2_on_header_callback)(nghttp2_session *session,
+ const nghttp2_frame *frame,
+ const uint8_t *name, size_t namelen,
+ const uint8_t *value, size_t valuelen,
+ uint8_t flags, void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when a header name/value pair is received
+ * for the |frame|. The |name| is header name. The |value| is header
+ * value. The |flags| is bitwise OR of one or more of
+ * :type:`nghttp2_nv_flag`.
+ *
+ * This callback behaves like :type:`nghttp2_on_header_callback`,
+ * except that |name| and |value| are stored in reference counted
+ * buffer. If application wishes to keep these references without
+ * copying them, use `nghttp2_rcbuf_incref()` to increment their
+ * reference count. It is the application's responsibility to call
+ * `nghttp2_rcbuf_decref()` if they called `nghttp2_rcbuf_incref()` so
+ * as not to leak memory. If the |session| is created by
+ * `nghttp2_session_server_new3()` or `nghttp2_session_client_new3()`,
+ * the function to free memory is the one belongs to the mem
+ * parameter. As long as this free function alives, |name| and
+ * |value| can live after |session| was destroyed.
+ */
+typedef int (*nghttp2_on_header_callback2)(nghttp2_session *session,
+ const nghttp2_frame *frame,
+ nghttp2_rcbuf *name,
+ nghttp2_rcbuf *value, uint8_t flags,
+ void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when the library asks application how
+ * many padding bytes are required for the transmission of the
+ * |frame|. The application must choose the total length of payload
+ * including padded bytes in range [frame->hd.length, max_payloadlen],
+ * inclusive. Choosing number not in this range will be treated as
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. Returning
+ * ``frame->hd.length`` means no padding is added. Returning
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE` will make
+ * `nghttp2_session_send()` and `nghttp2_session_mem_send()` functions
+ * immediately return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ *
+ * To set this callback to :type:`nghttp2_session_callbacks`, use
+ * `nghttp2_session_callbacks_set_select_padding_callback()`.
+ */
+typedef ssize_t (*nghttp2_select_padding_callback)(nghttp2_session *session,
+ const nghttp2_frame *frame,
+ size_t max_payloadlen,
+ void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when library wants to get max length of
+ * data to send data to the remote peer. The implementation of this
+ * function should return a value in the following range. [1,
+ * min(|session_remote_window_size|, |stream_remote_window_size|,
+ * |remote_max_frame_size|)]. If a value greater than this range is
+ * returned than the max allow value will be used. Returning a value
+ * smaller than this range is treated as
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. The |frame_type| is provided
+ * for future extensibility and identifies the type of frame (see
+ * :type:`nghttp2_frame_type`) for which to get the length for.
+ * Currently supported frame types are: :enum:`NGHTTP2_DATA`.
+ *
+ * This callback can be used to control the length in bytes for which
+ * :type:`nghttp2_data_source_read_callback` is allowed to send to the
+ * remote endpoint. This callback is optional. Returning
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE` will signal the entire session
+ * failure.
+ *
+ * To set this callback to :type:`nghttp2_session_callbacks`, use
+ * `nghttp2_session_callbacks_set_data_source_read_length_callback()`.
+ */
+typedef ssize_t (*nghttp2_data_source_read_length_callback)(
+ nghttp2_session *session, uint8_t frame_type, int32_t stream_id,
+ int32_t session_remote_window_size, int32_t stream_remote_window_size,
+ uint32_t remote_max_frame_size, void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when a frame header is received. The
+ * |hd| points to received frame header.
+ *
+ * Unlike :type:`nghttp2_on_frame_recv_callback`, this callback will
+ * also be called when frame header of CONTINUATION frame is received.
+ *
+ * If both :type:`nghttp2_on_begin_frame_callback` and
+ * :type:`nghttp2_on_begin_headers_callback` are set and HEADERS or
+ * PUSH_PROMISE is received, :type:`nghttp2_on_begin_frame_callback`
+ * will be called first.
+ *
+ * The implementation of this function must return 0 if it succeeds.
+ * If nonzero value is returned, it is treated as fatal error and
+ * `nghttp2_session_recv()` and `nghttp2_session_mem_recv()` functions
+ * immediately return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ *
+ * To set this callback to :type:`nghttp2_session_callbacks`, use
+ * `nghttp2_session_callbacks_set_on_begin_frame_callback()`.
+ */
+typedef int (*nghttp2_on_begin_frame_callback)(nghttp2_session *session,
+ const nghttp2_frame_hd *hd,
+ void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when chunk of extension frame payload is
+ * received. The |hd| points to frame header. The received
+ * chunk is |data| of length |len|.
+ *
+ * The implementation of this function must return 0 if it succeeds.
+ *
+ * To abort processing this extension frame, return
+ * :enum:`NGHTTP2_ERR_CANCEL`.
+ *
+ * If fatal error occurred, application should return
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. In this case,
+ * `nghttp2_session_recv()` and `nghttp2_session_mem_recv()` functions
+ * immediately return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. If the
+ * other values are returned, currently they are treated as
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ */
+typedef int (*nghttp2_on_extension_chunk_recv_callback)(
+ nghttp2_session *session, const nghttp2_frame_hd *hd, const uint8_t *data,
+ size_t len, void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when library asks the application to
+ * unpack extension payload from its wire format. The extension
+ * payload has been passed to the application using
+ * :type:`nghttp2_on_extension_chunk_recv_callback`. The frame header
+ * is already unpacked by the library and provided as |hd|.
+ *
+ * To receive extension frames, the application must tell desired
+ * extension frame type to the library using
+ * `nghttp2_option_set_user_recv_extension_type()`.
+ *
+ * The implementation of this function may store the pointer to the
+ * created object as a result of unpacking in |*payload|, and returns
+ * 0. The pointer stored in |*payload| is opaque to the library, and
+ * the library does not own its pointer. |*payload| is initialized as
+ * ``NULL``. The |*payload| is available as ``frame->ext.payload`` in
+ * :type:`nghttp2_on_frame_recv_callback`. Therefore if application
+ * can free that memory inside :type:`nghttp2_on_frame_recv_callback`
+ * callback. Of course, application has a liberty not ot use
+ * |*payload|, and do its own mechanism to process extension frames.
+ *
+ * To abort processing this extension frame, return
+ * :enum:`NGHTTP2_ERR_CANCEL`.
+ *
+ * If fatal error occurred, application should return
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. In this case,
+ * `nghttp2_session_recv()` and `nghttp2_session_mem_recv()` functions
+ * immediately return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. If the
+ * other values are returned, currently they are treated as
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ */
+typedef int (*nghttp2_unpack_extension_callback)(nghttp2_session *session,
+ void **payload,
+ const nghttp2_frame_hd *hd,
+ void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when library asks the application to pack
+ * extension payload in its wire format. The frame header will be
+ * packed by library. Application must pack payload only.
+ * ``frame->ext.payload`` is the object passed to
+ * `nghttp2_submit_extension()` as payload parameter. Application
+ * must pack extension payload to the |buf| of its capacity |len|
+ * bytes. The |len| is at least 16KiB.
+ *
+ * The implementation of this function should return the number of
+ * bytes written into |buf| when it succeeds.
+ *
+ * To abort processing this extension frame, return
+ * :enum:`NGHTTP2_ERR_CANCEL`, and
+ * :type:`nghttp2_on_frame_not_send_callback` will be invoked.
+ *
+ * If fatal error occurred, application should return
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. In this case,
+ * `nghttp2_session_send()` and `nghttp2_session_mem_send()` functions
+ * immediately return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. If the
+ * other values are returned, currently they are treated as
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. If the return value is
+ * strictly larger than |len|, it is treated as
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`.
+ */
+typedef ssize_t (*nghttp2_pack_extension_callback)(nghttp2_session *session,
+ uint8_t *buf, size_t len,
+ const nghttp2_frame *frame,
+ void *user_data);
+
+/**
+ * @functypedef
+ *
+ * Callback function invoked when library provides the error message
+ * intended for human consumption. This callback is solely for
+ * debugging purpose. The |msg| is typically NULL-terminated string
+ * of length |len|. |len| does not include the sentinel NULL
+ * character.
+ *
+ * The format of error message may change between nghttp2 library
+ * versions. The application should not depend on the particular
+ * format.
+ *
+ * Normally, application should return 0 from this callback. If fatal
+ * error occurred while doing something in this callback, application
+ * should return :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. In this case,
+ * library will return immediately with return value
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`. Currently, if nonzero value
+ * is returned from this callback, they are treated as
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`, but application should not
+ * rely on this details.
+ */
+typedef int (*nghttp2_error_callback)(nghttp2_session *session, const char *msg,
+ size_t len, void *user_data);
+
+struct nghttp2_session_callbacks;
+
+/**
+ * @struct
+ *
+ * Callback functions for :type:`nghttp2_session`. The details of
+ * this structure are intentionally hidden from the public API.
+ */
+typedef struct nghttp2_session_callbacks nghttp2_session_callbacks;
+
+/**
+ * @function
+ *
+ * Initializes |*callbacks_ptr| with NULL values.
+ *
+ * The initialized object can be used when initializing multiple
+ * :type:`nghttp2_session` objects.
+ *
+ * When the application finished using this object, it can use
+ * `nghttp2_session_callbacks_del()` to free its memory.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int
+nghttp2_session_callbacks_new(nghttp2_session_callbacks **callbacks_ptr);
+
+/**
+ * @function
+ *
+ * Frees any resources allocated for |callbacks|. If |callbacks| is
+ * ``NULL``, this function does nothing.
+ */
+NGHTTP2_EXTERN void
+nghttp2_session_callbacks_del(nghttp2_session_callbacks *callbacks);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when a session wants to send data to
+ * the remote peer. This callback is not necessary if the application
+ * uses solely `nghttp2_session_mem_send()` to serialize data to
+ * transmit.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_send_callback(
+ nghttp2_session_callbacks *cbs, nghttp2_send_callback send_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when the a session wants to receive
+ * data from the remote peer. This callback is not necessary if the
+ * application uses solely `nghttp2_session_mem_recv()` to process
+ * received data.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_recv_callback(
+ nghttp2_session_callbacks *cbs, nghttp2_recv_callback recv_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked by `nghttp2_session_recv()` and
+ * `nghttp2_session_mem_recv()` when a frame is received.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_on_frame_recv_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_frame_recv_callback on_frame_recv_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked by `nghttp2_session_recv()` and
+ * `nghttp2_session_mem_recv()` when an invalid non-DATA frame is
+ * received.
+ */
+NGHTTP2_EXTERN void
+nghttp2_session_callbacks_set_on_invalid_frame_recv_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_invalid_frame_recv_callback on_invalid_frame_recv_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when a chunk of data in DATA frame
+ * is received.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_on_data_chunk_recv_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_data_chunk_recv_callback on_data_chunk_recv_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked before a non-DATA frame is sent.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_before_frame_send_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_before_frame_send_callback before_frame_send_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked after a frame is sent.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_on_frame_send_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_frame_send_callback on_frame_send_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when a non-DATA frame is not sent
+ * because of an error.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_on_frame_not_send_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_frame_not_send_callback on_frame_not_send_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when the stream is closed.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_on_stream_close_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_stream_close_callback on_stream_close_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when the reception of header block
+ * in HEADERS or PUSH_PROMISE is started.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_on_begin_headers_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_begin_headers_callback on_begin_headers_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when a header name/value pair is
+ * received. If both
+ * `nghttp2_session_callbacks_set_on_header_callback()` and
+ * `nghttp2_session_callbacks_set_on_header_callback2()` are used to
+ * set callbacks, the latter has the precedence.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_on_header_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_header_callback on_header_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when a header name/value pair is
+ * received.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_on_header_callback2(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_header_callback2 on_header_callback2);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when the library asks application
+ * how many padding bytes are required for the transmission of the
+ * given frame.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_select_padding_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_select_padding_callback select_padding_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function determine the length allowed in
+ * :type:`nghttp2_data_source_read_callback`.
+ */
+NGHTTP2_EXTERN void
+nghttp2_session_callbacks_set_data_source_read_length_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_data_source_read_length_callback data_source_read_length_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when a frame header is received.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_on_begin_frame_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_begin_frame_callback on_begin_frame_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when
+ * :enum:`NGHTTP2_DATA_FLAG_NO_COPY` is used in
+ * :type:`nghttp2_data_source_read_callback` to avoid data copy.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_send_data_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_send_data_callback send_data_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when the library asks the
+ * application to pack extension frame payload in wire format.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_pack_extension_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_pack_extension_callback pack_extension_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when the library asks the
+ * application to unpack extension frame payload from wire format.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_unpack_extension_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_unpack_extension_callback unpack_extension_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when chunk of extension frame
+ * payload is received.
+ */
+NGHTTP2_EXTERN void
+nghttp2_session_callbacks_set_on_extension_chunk_recv_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_extension_chunk_recv_callback on_extension_chunk_recv_callback);
+
+/**
+ * @function
+ *
+ * Sets callback function invoked when library tells error message to
+ * the application.
+ */
+NGHTTP2_EXTERN void nghttp2_session_callbacks_set_error_callback(
+ nghttp2_session_callbacks *cbs, nghttp2_error_callback error_callback);
+
+/**
+ * @functypedef
+ *
+ * Custom memory allocator to replace malloc(). The |mem_user_data|
+ * is the mem_user_data member of :type:`nghttp2_mem` structure.
+ */
+typedef void *(*nghttp2_malloc)(size_t size, void *mem_user_data);
+
+/**
+ * @functypedef
+ *
+ * Custom memory allocator to replace free(). The |mem_user_data| is
+ * the mem_user_data member of :type:`nghttp2_mem` structure.
+ */
+typedef void (*nghttp2_free)(void *ptr, void *mem_user_data);
+
+/**
+ * @functypedef
+ *
+ * Custom memory allocator to replace calloc(). The |mem_user_data|
+ * is the mem_user_data member of :type:`nghttp2_mem` structure.
+ */
+typedef void *(*nghttp2_calloc)(size_t nmemb, size_t size, void *mem_user_data);
+
+/**
+ * @functypedef
+ *
+ * Custom memory allocator to replace realloc(). The |mem_user_data|
+ * is the mem_user_data member of :type:`nghttp2_mem` structure.
+ */
+typedef void *(*nghttp2_realloc)(void *ptr, size_t size, void *mem_user_data);
+
+/**
+ * @struct
+ *
+ * Custom memory allocator functions and user defined pointer. The
+ * |mem_user_data| member is passed to each allocator function. This
+ * can be used, for example, to achieve per-session memory pool.
+ *
+ * In the following example code, ``my_malloc``, ``my_free``,
+ * ``my_calloc`` and ``my_realloc`` are the replacement of the
+ * standard allocators ``malloc``, ``free``, ``calloc`` and
+ * ``realloc`` respectively::
+ *
+ * void *my_malloc_cb(size_t size, void *mem_user_data) {
+ * return my_malloc(size);
+ * }
+ *
+ * void my_free_cb(void *ptr, void *mem_user_data) { my_free(ptr); }
+ *
+ * void *my_calloc_cb(size_t nmemb, size_t size, void *mem_user_data) {
+ * return my_calloc(nmemb, size);
+ * }
+ *
+ * void *my_realloc_cb(void *ptr, size_t size, void *mem_user_data) {
+ * return my_realloc(ptr, size);
+ * }
+ *
+ * void session_new() {
+ * nghttp2_session *session;
+ * nghttp2_session_callbacks *callbacks;
+ * nghttp2_mem mem = {NULL, my_malloc_cb, my_free_cb, my_calloc_cb,
+ * my_realloc_cb};
+ *
+ * ...
+ *
+ * nghttp2_session_client_new3(&session, callbacks, NULL, NULL, &mem);
+ *
+ * ...
+ * }
+ */
+typedef struct {
+ /**
+ * An arbitrary user supplied data. This is passed to each
+ * allocator function.
+ */
+ void *mem_user_data;
+ /**
+ * Custom allocator function to replace malloc().
+ */
+ nghttp2_malloc malloc;
+ /**
+ * Custom allocator function to replace free().
+ */
+ nghttp2_free free;
+ /**
+ * Custom allocator function to replace calloc().
+ */
+ nghttp2_calloc calloc;
+ /**
+ * Custom allocator function to replace realloc().
+ */
+ nghttp2_realloc realloc;
+} nghttp2_mem;
+
+struct nghttp2_option;
+
+/**
+ * @struct
+ *
+ * Configuration options for :type:`nghttp2_session`. The details of
+ * this structure are intentionally hidden from the public API.
+ */
+typedef struct nghttp2_option nghttp2_option;
+
+/**
+ * @function
+ *
+ * Initializes |*option_ptr| with default values.
+ *
+ * When the application finished using this object, it can use
+ * `nghttp2_option_del()` to free its memory.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int nghttp2_option_new(nghttp2_option **option_ptr);
+
+/**
+ * @function
+ *
+ * Frees any resources allocated for |option|. If |option| is
+ * ``NULL``, this function does nothing.
+ */
+NGHTTP2_EXTERN void nghttp2_option_del(nghttp2_option *option);
+
+/**
+ * @function
+ *
+ * This option prevents the library from sending WINDOW_UPDATE for a
+ * connection automatically. If this option is set to nonzero, the
+ * library won't send WINDOW_UPDATE for DATA until application calls
+ * `nghttp2_session_consume()` to indicate the consumed amount of
+ * data. Don't use `nghttp2_submit_window_update()` for this purpose.
+ * By default, this option is set to zero.
+ */
+NGHTTP2_EXTERN void
+nghttp2_option_set_no_auto_window_update(nghttp2_option *option, int val);
+
+/**
+ * @function
+ *
+ * This option sets the SETTINGS_MAX_CONCURRENT_STREAMS value of
+ * remote endpoint as if it is received in SETTINGS frame. Without
+ * specifying this option, before the local endpoint receives
+ * SETTINGS_MAX_CONCURRENT_STREAMS in SETTINGS frame from remote
+ * endpoint, SETTINGS_MAX_CONCURRENT_STREAMS is unlimited. This may
+ * cause problem if local endpoint submits lots of requests initially
+ * and sending them at once to the remote peer may lead to the
+ * rejection of some requests. Specifying this option to the sensible
+ * value, say 100, may avoid this kind of issue. This value will be
+ * overwritten if the local endpoint receives
+ * SETTINGS_MAX_CONCURRENT_STREAMS from the remote endpoint.
+ */
+NGHTTP2_EXTERN void
+nghttp2_option_set_peer_max_concurrent_streams(nghttp2_option *option,
+ uint32_t val);
+
+/**
+ * @function
+ *
+ * By default, nghttp2 library, if configured as server, requires
+ * first 24 bytes of client magic byte string (MAGIC). In most cases,
+ * this will simplify the implementation of server. But sometimes
+ * server may want to detect the application protocol based on first
+ * few bytes on clear text communication.
+ *
+ * If this option is used with nonzero |val|, nghttp2 library does not
+ * handle MAGIC. It still checks following SETTINGS frame. This
+ * means that applications should deal with MAGIC by themselves.
+ *
+ * If this option is not used or used with zero value, if MAGIC does
+ * not match :macro:`NGHTTP2_CLIENT_MAGIC`, `nghttp2_session_recv()`
+ * and `nghttp2_session_mem_recv()` will return error
+ * :enum:`NGHTTP2_ERR_BAD_CLIENT_MAGIC`, which is fatal error.
+ */
+NGHTTP2_EXTERN void
+nghttp2_option_set_no_recv_client_magic(nghttp2_option *option, int val);
+
+/**
+ * @function
+ *
+ * By default, nghttp2 library enforces subset of HTTP Messaging rules
+ * described in `HTTP/2 specification, section 8
+ * <https://tools.ietf.org/html/rfc7540#section-8>`_. See
+ * :ref:`http-messaging` section for details. For those applications
+ * who use nghttp2 library as non-HTTP use, give nonzero to |val| to
+ * disable this enforcement.
+ */
+NGHTTP2_EXTERN void nghttp2_option_set_no_http_messaging(nghttp2_option *option,
+ int val);
+
+/**
+ * @function
+ *
+ * RFC 7540 does not enforce any limit on the number of incoming
+ * reserved streams (in RFC 7540 terms, streams in reserved (remote)
+ * state). This only affects client side, since only server can push
+ * streams. Malicious server can push arbitrary number of streams,
+ * and make client's memory exhausted. This option can set the
+ * maximum number of such incoming streams to avoid possible memory
+ * exhaustion. If this option is set, and pushed streams are
+ * automatically closed on reception, without calling user provided
+ * callback, if they exceed the given limit. The default value is
+ * 200. If session is configured as server side, this option has no
+ * effect. Server can control the number of streams to push.
+ */
+NGHTTP2_EXTERN void
+nghttp2_option_set_max_reserved_remote_streams(nghttp2_option *option,
+ uint32_t val);
+
+/**
+ * @function
+ *
+ * Sets extension frame type the application is willing to handle with
+ * user defined callbacks (see
+ * :type:`nghttp2_on_extension_chunk_recv_callback` and
+ * :type:`nghttp2_unpack_extension_callback`). The |type| is
+ * extension frame type, and must be strictly greater than 0x9.
+ * Otherwise, this function does nothing. The application can call
+ * this function multiple times to set more than one frame type to
+ * receive. The application does not have to call this function if it
+ * just sends extension frames.
+ */
+NGHTTP2_EXTERN void
+nghttp2_option_set_user_recv_extension_type(nghttp2_option *option,
+ uint8_t type);
+
+/**
+ * @function
+ *
+ * Sets extension frame type the application is willing to receive
+ * using builtin handler. The |type| is the extension frame type to
+ * receive, and must be strictly greater than 0x9. Otherwise, this
+ * function does nothing. The application can call this function
+ * multiple times to set more than one frame type to receive. The
+ * application does not have to call this function if it just sends
+ * extension frames.
+ *
+ * If same frame type is passed to both
+ * `nghttp2_option_set_builtin_recv_extension_type()` and
+ * `nghttp2_option_set_user_recv_extension_type()`, the latter takes
+ * precedence.
+ */
+NGHTTP2_EXTERN void
+nghttp2_option_set_builtin_recv_extension_type(nghttp2_option *option,
+ uint8_t type);
+
+/**
+ * @function
+ *
+ * This option prevents the library from sending PING frame with ACK
+ * flag set automatically when PING frame without ACK flag set is
+ * received. If this option is set to nonzero, the library won't send
+ * PING frame with ACK flag set in the response for incoming PING
+ * frame. The application can send PING frame with ACK flag set using
+ * `nghttp2_submit_ping()` with :enum:`NGHTTP2_FLAG_ACK` as flags
+ * parameter.
+ */
+NGHTTP2_EXTERN void nghttp2_option_set_no_auto_ping_ack(nghttp2_option *option,
+ int val);
+
+/**
+ * @function
+ *
+ * This option sets the maximum length of header block (a set of
+ * header fields per one HEADERS frame) to send. The length of a
+ * given set of header fields is calculated using
+ * `nghttp2_hd_deflate_bound()`. The default value is 64KiB. If
+ * application attempts to send header fields larger than this limit,
+ * the transmission of the frame fails with error code
+ * :enum:`NGHTTP2_ERR_FRAME_SIZE_ERROR`.
+ */
+NGHTTP2_EXTERN void
+nghttp2_option_set_max_send_header_block_length(nghttp2_option *option,
+ size_t val);
+
+/**
+ * @function
+ *
+ * Initializes |*session_ptr| for client use. The all members of
+ * |callbacks| are copied to |*session_ptr|. Therefore |*session_ptr|
+ * does not store |callbacks|. The |user_data| is an arbitrary user
+ * supplied data, which will be passed to the callback functions.
+ *
+ * The :type:`nghttp2_send_callback` must be specified. If the
+ * application code uses `nghttp2_session_recv()`, the
+ * :type:`nghttp2_recv_callback` must be specified. The other members
+ * of |callbacks| can be ``NULL``.
+ *
+ * If this function fails, |*session_ptr| is left untouched.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int
+nghttp2_session_client_new(nghttp2_session **session_ptr,
+ const nghttp2_session_callbacks *callbacks,
+ void *user_data);
+
+/**
+ * @function
+ *
+ * Initializes |*session_ptr| for server use. The all members of
+ * |callbacks| are copied to |*session_ptr|. Therefore |*session_ptr|
+ * does not store |callbacks|. The |user_data| is an arbitrary user
+ * supplied data, which will be passed to the callback functions.
+ *
+ * The :type:`nghttp2_send_callback` must be specified. If the
+ * application code uses `nghttp2_session_recv()`, the
+ * :type:`nghttp2_recv_callback` must be specified. The other members
+ * of |callbacks| can be ``NULL``.
+ *
+ * If this function fails, |*session_ptr| is left untouched.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int
+nghttp2_session_server_new(nghttp2_session **session_ptr,
+ const nghttp2_session_callbacks *callbacks,
+ void *user_data);
+
+/**
+ * @function
+ *
+ * Like `nghttp2_session_client_new()`, but with additional options
+ * specified in the |option|.
+ *
+ * The |option| can be ``NULL`` and the call is equivalent to
+ * `nghttp2_session_client_new()`.
+ *
+ * This function does not take ownership |option|. The application is
+ * responsible for freeing |option| if it finishes using the object.
+ *
+ * The library code does not refer to |option| after this function
+ * returns.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int
+nghttp2_session_client_new2(nghttp2_session **session_ptr,
+ const nghttp2_session_callbacks *callbacks,
+ void *user_data, const nghttp2_option *option);
+
+/**
+ * @function
+ *
+ * Like `nghttp2_session_server_new()`, but with additional options
+ * specified in the |option|.
+ *
+ * The |option| can be ``NULL`` and the call is equivalent to
+ * `nghttp2_session_server_new()`.
+ *
+ * This function does not take ownership |option|. The application is
+ * responsible for freeing |option| if it finishes using the object.
+ *
+ * The library code does not refer to |option| after this function
+ * returns.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int
+nghttp2_session_server_new2(nghttp2_session **session_ptr,
+ const nghttp2_session_callbacks *callbacks,
+ void *user_data, const nghttp2_option *option);
+
+/**
+ * @function
+ *
+ * Like `nghttp2_session_client_new2()`, but with additional custom
+ * memory allocator specified in the |mem|.
+ *
+ * The |mem| can be ``NULL`` and the call is equivalent to
+ * `nghttp2_session_client_new2()`.
+ *
+ * This function does not take ownership |mem|. The application is
+ * responsible for freeing |mem|.
+ *
+ * The library code does not refer to |mem| pointer after this
+ * function returns, so the application can safely free it.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int nghttp2_session_client_new3(
+ nghttp2_session **session_ptr, const nghttp2_session_callbacks *callbacks,
+ void *user_data, const nghttp2_option *option, nghttp2_mem *mem);
+
+/**
+ * @function
+ *
+ * Like `nghttp2_session_server_new2()`, but with additional custom
+ * memory allocator specified in the |mem|.
+ *
+ * The |mem| can be ``NULL`` and the call is equivalent to
+ * `nghttp2_session_server_new2()`.
+ *
+ * This function does not take ownership |mem|. The application is
+ * responsible for freeing |mem|.
+ *
+ * The library code does not refer to |mem| pointer after this
+ * function returns, so the application can safely free it.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int nghttp2_session_server_new3(
+ nghttp2_session **session_ptr, const nghttp2_session_callbacks *callbacks,
+ void *user_data, const nghttp2_option *option, nghttp2_mem *mem);
+
+/**
+ * @function
+ *
+ * Frees any resources allocated for |session|. If |session| is
+ * ``NULL``, this function does nothing.
+ */
+NGHTTP2_EXTERN void nghttp2_session_del(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Sends pending frames to the remote peer.
+ *
+ * This function retrieves the highest prioritized frame from the
+ * outbound queue and sends it to the remote peer. It does this as
+ * many as possible until the user callback
+ * :type:`nghttp2_send_callback` returns
+ * :enum:`NGHTTP2_ERR_WOULDBLOCK` or the outbound queue becomes empty.
+ * This function calls several callback functions which are passed
+ * when initializing the |session|. Here is the simple time chart
+ * which tells when each callback is invoked:
+ *
+ * 1. Get the next frame to send from outbound queue.
+ *
+ * 2. Prepare transmission of the frame.
+ *
+ * 3. If the control frame cannot be sent because some preconditions
+ * are not met (e.g., request HEADERS cannot be sent after GOAWAY),
+ * :type:`nghttp2_on_frame_not_send_callback` is invoked. Abort
+ * the following steps.
+ *
+ * 4. If the frame is HEADERS, PUSH_PROMISE or DATA,
+ * :type:`nghttp2_select_padding_callback` is invoked.
+ *
+ * 5. If the frame is request HEADERS, the stream is opened here.
+ *
+ * 6. :type:`nghttp2_before_frame_send_callback` is invoked.
+ *
+ * 7. If :enum:`NGHTTP2_ERR_CANCEL` is returned from
+ * :type:`nghttp2_before_frame_send_callback`, the current frame
+ * transmission is canceled, and
+ * :type:`nghttp2_on_frame_not_send_callback` is invoked. Abort
+ * the following steps.
+ *
+ * 8. :type:`nghttp2_send_callback` is invoked one or more times to
+ * send the frame.
+ *
+ * 9. :type:`nghttp2_on_frame_send_callback` is invoked.
+ *
+ * 10. If the transmission of the frame triggers closure of the
+ * stream, the stream is closed and
+ * :type:`nghttp2_on_stream_close_callback` is invoked.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`
+ * The callback function failed.
+ */
+NGHTTP2_EXTERN int nghttp2_session_send(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Returns the serialized data to send.
+ *
+ * This function behaves like `nghttp2_session_send()` except that it
+ * does not use :type:`nghttp2_send_callback` to transmit data.
+ * Instead, it assigns the pointer to the serialized data to the
+ * |*data_ptr| and returns its length. The other callbacks are called
+ * in the same way as they are in `nghttp2_session_send()`.
+ *
+ * If no data is available to send, this function returns 0.
+ *
+ * This function may not return all serialized data in one invocation.
+ * To get all data, call this function repeatedly until it returns 0
+ * or one of negative error codes.
+ *
+ * The assigned |*data_ptr| is valid until the next call of
+ * `nghttp2_session_mem_send()` or `nghttp2_session_send()`.
+ *
+ * The caller must send all data before sending the next chunk of
+ * data.
+ *
+ * This function returns the length of the data pointed by the
+ * |*data_ptr| if it succeeds, or one of the following negative error
+ * codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ *
+ * .. note::
+ *
+ * This function may produce very small byte string. If that is the
+ * case, and application disables Nagle algorithm (``TCP_NODELAY``),
+ * then writing this small chunk leads to very small packet, and it
+ * is very inefficient. An application should be responsible to
+ * buffer up small chunks of data as necessary to avoid this
+ * situation.
+ */
+NGHTTP2_EXTERN ssize_t
+nghttp2_session_mem_send(nghttp2_session *session, const uint8_t **data_ptr);
+
+/**
+ * @function
+ *
+ * Receives frames from the remote peer.
+ *
+ * This function receives as many frames as possible until the user
+ * callback :type:`nghttp2_recv_callback` returns
+ * :enum:`NGHTTP2_ERR_WOULDBLOCK`. This function calls several
+ * callback functions which are passed when initializing the
+ * |session|. Here is the simple time chart which tells when each
+ * callback is invoked:
+ *
+ * 1. :type:`nghttp2_recv_callback` is invoked one or more times to
+ * receive frame header.
+ *
+ * 2. When frame header is received,
+ * :type:`nghttp2_on_begin_frame_callback` is invoked.
+ *
+ * 3. If the frame is DATA frame:
+ *
+ * 1. :type:`nghttp2_recv_callback` is invoked to receive DATA
+ * payload. For each chunk of data,
+ * :type:`nghttp2_on_data_chunk_recv_callback` is invoked.
+ *
+ * 2. If one DATA frame is completely received,
+ * :type:`nghttp2_on_frame_recv_callback` is invoked. If the
+ * reception of the frame triggers the closure of the stream,
+ * :type:`nghttp2_on_stream_close_callback` is invoked.
+ *
+ * 4. If the frame is the control frame:
+ *
+ * 1. :type:`nghttp2_recv_callback` is invoked one or more times to
+ * receive whole frame.
+ *
+ * 2. If the received frame is valid, then following actions are
+ * taken. If the frame is either HEADERS or PUSH_PROMISE,
+ * :type:`nghttp2_on_begin_headers_callback` is invoked. Then
+ * :type:`nghttp2_on_header_callback` is invoked for each header
+ * name/value pair. After all name/value pairs are emitted
+ * successfully, :type:`nghttp2_on_frame_recv_callback` is
+ * invoked. For other frames,
+ * :type:`nghttp2_on_frame_recv_callback` is invoked. If the
+ * reception of the frame triggers the closure of the stream,
+ * :type:`nghttp2_on_stream_close_callback` is invoked.
+ *
+ * 3. If the received frame is unpacked but is interpreted as
+ * invalid, :type:`nghttp2_on_invalid_frame_recv_callback` is
+ * invoked.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_EOF`
+ * The remote peer did shutdown on the connection.
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`
+ * The callback function failed.
+ * :enum:`NGHTTP2_ERR_BAD_CLIENT_MAGIC`
+ * Invalid client magic was detected. This error only returns
+ * when |session| was configured as server and
+ * `nghttp2_option_set_no_recv_client_magic()` is not used with
+ * nonzero value.
+ * :enum:`NGHTTP2_ERR_FLOODED`
+ * Flooding was detected in this HTTP/2 session, and it must be
+ * closed. This is most likely caused by misbehaviour of peer.
+ */
+NGHTTP2_EXTERN int nghttp2_session_recv(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Processes data |in| as an input from the remote endpoint. The
+ * |inlen| indicates the number of bytes in the |in|.
+ *
+ * This function behaves like `nghttp2_session_recv()` except that it
+ * does not use :type:`nghttp2_recv_callback` to receive data; the
+ * |in| is the only data for the invocation of this function. If all
+ * bytes are processed, this function returns. The other callbacks
+ * are called in the same way as they are in `nghttp2_session_recv()`.
+ *
+ * In the current implementation, this function always tries to
+ * processes all input data unless either an error occurs or
+ * :enum:`NGHTTP2_ERR_PAUSE` is returned from
+ * :type:`nghttp2_on_header_callback` or
+ * :type:`nghttp2_on_data_chunk_recv_callback`. If
+ * :enum:`NGHTTP2_ERR_PAUSE` is used, the return value includes the
+ * number of bytes which was used to produce the data or frame for the
+ * callback.
+ *
+ * This function returns the number of processed bytes, or one of the
+ * following negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_CALLBACK_FAILURE`
+ * The callback function failed.
+ * :enum:`NGHTTP2_ERR_BAD_CLIENT_MAGIC`
+ * Invalid client magic was detected. This error only returns
+ * when |session| was configured as server and
+ * `nghttp2_option_set_no_recv_client_magic()` is not used with
+ * nonzero value.
+ * :enum:`NGHTTP2_ERR_FLOODED`
+ * Flooding was detected in this HTTP/2 session, and it must be
+ * closed. This is most likely caused by misbehaviour of peer.
+ */
+NGHTTP2_EXTERN ssize_t nghttp2_session_mem_recv(nghttp2_session *session,
+ const uint8_t *in,
+ size_t inlen);
+
+/**
+ * @function
+ *
+ * Puts back previously deferred DATA frame in the stream |stream_id|
+ * to the outbound queue.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The stream does not exist; or no deferred data exist.
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int nghttp2_session_resume_data(nghttp2_session *session,
+ int32_t stream_id);
+
+/**
+ * @function
+ *
+ * Returns nonzero value if |session| wants to receive data from the
+ * remote peer.
+ *
+ * If both `nghttp2_session_want_read()` and
+ * `nghttp2_session_want_write()` return 0, the application should
+ * drop the connection.
+ */
+NGHTTP2_EXTERN int nghttp2_session_want_read(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Returns nonzero value if |session| wants to send data to the remote
+ * peer.
+ *
+ * If both `nghttp2_session_want_read()` and
+ * `nghttp2_session_want_write()` return 0, the application should
+ * drop the connection.
+ */
+NGHTTP2_EXTERN int nghttp2_session_want_write(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Returns stream_user_data for the stream |stream_id|. The
+ * stream_user_data is provided by `nghttp2_submit_request()`,
+ * `nghttp2_submit_headers()` or
+ * `nghttp2_session_set_stream_user_data()`. Unless it is set using
+ * `nghttp2_session_set_stream_user_data()`, if the stream is
+ * initiated by the remote endpoint, stream_user_data is always
+ * ``NULL``. If the stream does not exist, this function returns
+ * ``NULL``.
+ */
+NGHTTP2_EXTERN void *
+nghttp2_session_get_stream_user_data(nghttp2_session *session,
+ int32_t stream_id);
+
+/**
+ * @function
+ *
+ * Sets the |stream_user_data| to the stream denoted by the
+ * |stream_id|. If a stream user data is already set to the stream,
+ * it is replaced with the |stream_user_data|. It is valid to specify
+ * ``NULL`` in the |stream_user_data|, which nullifies the associated
+ * data pointer.
+ *
+ * It is valid to set the |stream_user_data| to the stream reserved by
+ * PUSH_PROMISE frame.
+ *
+ * This function returns 0 if it succeeds, or one of following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The stream does not exist
+ */
+NGHTTP2_EXTERN int
+nghttp2_session_set_stream_user_data(nghttp2_session *session,
+ int32_t stream_id, void *stream_user_data);
+
+/**
+ * @function
+ *
+ * Returns the number of frames in the outbound queue. This does not
+ * include the deferred DATA frames.
+ */
+NGHTTP2_EXTERN size_t
+nghttp2_session_get_outbound_queue_size(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Returns the number of DATA payload in bytes received without
+ * WINDOW_UPDATE transmission for the stream |stream_id|. The local
+ * (receive) window size can be adjusted by
+ * `nghttp2_submit_window_update()`. This function takes into account
+ * that and returns effective data length. In particular, if the
+ * local window size is reduced by submitting negative
+ * window_size_increment with `nghttp2_submit_window_update()`, this
+ * function returns the number of bytes less than actually received.
+ *
+ * This function returns -1 if it fails.
+ */
+NGHTTP2_EXTERN int32_t
+nghttp2_session_get_stream_effective_recv_data_length(nghttp2_session *session,
+ int32_t stream_id);
+
+/**
+ * @function
+ *
+ * Returns the local (receive) window size for the stream |stream_id|.
+ * The local window size can be adjusted by
+ * `nghttp2_submit_window_update()`. This function takes into account
+ * that and returns effective window size.
+ *
+ * This function returns -1 if it fails.
+ */
+NGHTTP2_EXTERN int32_t
+nghttp2_session_get_stream_effective_local_window_size(nghttp2_session *session,
+ int32_t stream_id);
+
+/**
+ * @function
+ *
+ * Returns the number of DATA payload in bytes received without
+ * WINDOW_UPDATE transmission for a connection. The local (receive)
+ * window size can be adjusted by `nghttp2_submit_window_update()`.
+ * This function takes into account that and returns effective data
+ * length. In particular, if the local window size is reduced by
+ * submitting negative window_size_increment with
+ * `nghttp2_submit_window_update()`, this function returns the number
+ * of bytes less than actually received.
+ *
+ * This function returns -1 if it fails.
+ */
+NGHTTP2_EXTERN int32_t
+nghttp2_session_get_effective_recv_data_length(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Returns the local (receive) window size for a connection. The
+ * local window size can be adjusted by
+ * `nghttp2_submit_window_update()`. This function takes into account
+ * that and returns effective window size.
+ *
+ * This function returns -1 if it fails.
+ */
+NGHTTP2_EXTERN int32_t
+nghttp2_session_get_effective_local_window_size(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Returns the remote window size for a given stream |stream_id|.
+ *
+ * This is the amount of flow-controlled payload (e.g., DATA) that the
+ * local endpoint can send without stream level WINDOW_UPDATE. There
+ * is also connection level flow control, so the effective size of
+ * payload that the local endpoint can actually send is
+ * min(`nghttp2_session_get_stream_remote_window_size()`,
+ * `nghttp2_session_get_remote_window_size()`).
+ *
+ * This function returns -1 if it fails.
+ */
+NGHTTP2_EXTERN int32_t
+nghttp2_session_get_stream_remote_window_size(nghttp2_session *session,
+ int32_t stream_id);
+
+/**
+ * @function
+ *
+ * Returns the remote window size for a connection.
+ *
+ * This function always succeeds.
+ */
+NGHTTP2_EXTERN int32_t
+nghttp2_session_get_remote_window_size(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Returns 1 if local peer half closed the given stream |stream_id|.
+ * Returns 0 if it did not. Returns -1 if no such stream exists.
+ */
+NGHTTP2_EXTERN int
+nghttp2_session_get_stream_local_close(nghttp2_session *session,
+ int32_t stream_id);
+
+/**
+ * @function
+ *
+ * Returns 1 if remote peer half closed the given stream |stream_id|.
+ * Returns 0 if it did not. Returns -1 if no such stream exists.
+ */
+NGHTTP2_EXTERN int
+nghttp2_session_get_stream_remote_close(nghttp2_session *session,
+ int32_t stream_id);
+
+/**
+ * @function
+ *
+ * Signals the session so that the connection should be terminated.
+ *
+ * The last stream ID is the minimum value between the stream ID of a
+ * stream for which :type:`nghttp2_on_frame_recv_callback` was called
+ * most recently and the last stream ID we have sent to the peer
+ * previously.
+ *
+ * The |error_code| is the error code of this GOAWAY frame. The
+ * pre-defined error code is one of :enum:`nghttp2_error_code`.
+ *
+ * After the transmission, both `nghttp2_session_want_read()` and
+ * `nghttp2_session_want_write()` return 0.
+ *
+ * This function should be called when the connection should be
+ * terminated after sending GOAWAY. If the remaining streams should
+ * be processed after GOAWAY, use `nghttp2_submit_goaway()` instead.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int nghttp2_session_terminate_session(nghttp2_session *session,
+ uint32_t error_code);
+
+/**
+ * @function
+ *
+ * Signals the session so that the connection should be terminated.
+ *
+ * This function behaves like `nghttp2_session_terminate_session()`,
+ * but the last stream ID can be specified by the application for fine
+ * grained control of stream. The HTTP/2 specification does not allow
+ * last_stream_id to be increased. So the actual value sent as
+ * last_stream_id is the minimum value between the given
+ * |last_stream_id| and the last_stream_id we have previously sent to
+ * the peer.
+ *
+ * The |last_stream_id| is peer's stream ID or 0. So if |session| is
+ * initialized as client, |last_stream_id| must be even or 0. If
+ * |session| is initialized as server, |last_stream_id| must be odd or
+ * 0.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |last_stream_id| is invalid.
+ */
+NGHTTP2_EXTERN int nghttp2_session_terminate_session2(nghttp2_session *session,
+ int32_t last_stream_id,
+ uint32_t error_code);
+
+/**
+ * @function
+ *
+ * Signals to the client that the server started graceful shutdown
+ * procedure.
+ *
+ * This function is only usable for server. If this function is
+ * called with client side session, this function returns
+ * :enum:`NGHTTP2_ERR_INVALID_STATE`.
+ *
+ * To gracefully shutdown HTTP/2 session, server should call this
+ * function to send GOAWAY with last_stream_id (1u << 31) - 1. And
+ * after some delay (e.g., 1 RTT), send another GOAWAY with the stream
+ * ID that the server has some processing using
+ * `nghttp2_submit_goaway()`. See also
+ * `nghttp2_session_get_last_proc_stream_id()`.
+ *
+ * Unlike `nghttp2_submit_goaway()`, this function just sends GOAWAY
+ * and does nothing more. This is a mere indication to the client
+ * that session shutdown is imminent. The application should call
+ * `nghttp2_submit_goaway()` with appropriate last_stream_id after
+ * this call.
+ *
+ * If one or more GOAWAY frame have been already sent by either
+ * `nghttp2_submit_goaway()` or `nghttp2_session_terminate_session()`,
+ * this function has no effect.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_STATE`
+ * The |session| is initialized as client.
+ */
+NGHTTP2_EXTERN int nghttp2_submit_shutdown_notice(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Returns the value of SETTINGS |id| notified by a remote endpoint.
+ * The |id| must be one of values defined in
+ * :enum:`nghttp2_settings_id`.
+ */
+NGHTTP2_EXTERN uint32_t
+nghttp2_session_get_remote_settings(nghttp2_session *session,
+ nghttp2_settings_id id);
+
+/**
+ * @function
+ *
+ * Tells the |session| that next stream ID is |next_stream_id|. The
+ * |next_stream_id| must be equal or greater than the value returned
+ * by `nghttp2_session_get_next_stream_id()`.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |next_stream_id| is strictly less than the value
+ * `nghttp2_session_get_next_stream_id()` returns; or
+ * |next_stream_id| is invalid (e.g., even integer for client, or
+ * odd integer for server).
+ */
+NGHTTP2_EXTERN int nghttp2_session_set_next_stream_id(nghttp2_session *session,
+ int32_t next_stream_id);
+
+/**
+ * @function
+ *
+ * Returns the next outgoing stream ID. Notice that return type is
+ * uint32_t. If we run out of stream ID for this session, this
+ * function returns 1 << 31.
+ */
+NGHTTP2_EXTERN uint32_t
+nghttp2_session_get_next_stream_id(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Tells the |session| that |size| bytes for a stream denoted by
+ * |stream_id| were consumed by application and are ready to
+ * WINDOW_UPDATE. The consumed bytes are counted towards both
+ * connection and stream level WINDOW_UPDATE (see
+ * `nghttp2_session_consume_connection()` and
+ * `nghttp2_session_consume_stream()` to update consumption
+ * independently). This function is intended to be used without
+ * automatic window update (see
+ * `nghttp2_option_set_no_auto_window_update()`).
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |stream_id| is 0.
+ * :enum:`NGHTTP2_ERR_INVALID_STATE`
+ * Automatic WINDOW_UPDATE is not disabled.
+ */
+NGHTTP2_EXTERN int nghttp2_session_consume(nghttp2_session *session,
+ int32_t stream_id, size_t size);
+
+/**
+ * @function
+ *
+ * Like `nghttp2_session_consume()`, but this only tells library that
+ * |size| bytes were consumed only for connection level. Note that
+ * HTTP/2 maintains connection and stream level flow control windows
+ * independently.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_STATE`
+ * Automatic WINDOW_UPDATE is not disabled.
+ */
+NGHTTP2_EXTERN int nghttp2_session_consume_connection(nghttp2_session *session,
+ size_t size);
+
+/**
+ * @function
+ *
+ * Like `nghttp2_session_consume()`, but this only tells library that
+ * |size| bytes were consumed only for stream denoted by |stream_id|.
+ * Note that HTTP/2 maintains connection and stream level flow control
+ * windows independently.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |stream_id| is 0.
+ * :enum:`NGHTTP2_ERR_INVALID_STATE`
+ * Automatic WINDOW_UPDATE is not disabled.
+ */
+NGHTTP2_EXTERN int nghttp2_session_consume_stream(nghttp2_session *session,
+ int32_t stream_id,
+ size_t size);
+
+/**
+ * @function
+ *
+ * Changes priority of existing stream denoted by |stream_id|. The
+ * new priority specification is |pri_spec|.
+ *
+ * The priority is changed silently and instantly, and no PRIORITY
+ * frame will be sent to notify the peer of this change. This
+ * function may be useful for server to change the priority of pushed
+ * stream.
+ *
+ * If |session| is initialized as server, and ``pri_spec->stream_id``
+ * points to the idle stream, the idle stream is created if it does
+ * not exist. The created idle stream will depend on root stream
+ * (stream 0) with weight 16.
+ *
+ * Otherwise, if stream denoted by ``pri_spec->stream_id`` is not
+ * found, we use default priority instead of given |pri_spec|. That
+ * is make stream depend on root stream with weight 16.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * Attempted to depend on itself; or no stream exist for the given
+ * |stream_id|; or |stream_id| is 0
+ */
+NGHTTP2_EXTERN int
+nghttp2_session_change_stream_priority(nghttp2_session *session,
+ int32_t stream_id,
+ const nghttp2_priority_spec *pri_spec);
+
+/**
+ * @function
+ *
+ * Creates idle stream with the given |stream_id|, and priority
+ * |pri_spec|.
+ *
+ * The stream creation is done without sending PRIORITY frame, which
+ * means that peer does not know about the existence of this idle
+ * stream in the local endpoint.
+ *
+ * RFC 7540 does not disallow the use of creation of idle stream with
+ * odd or even stream ID regardless of client or server. So this
+ * function can create odd or even stream ID regardless of client or
+ * server. But probably it is a bit safer to use the stream ID the
+ * local endpoint can initiate (in other words, use odd stream ID for
+ * client, and even stream ID for server), to avoid potential
+ * collision from peer's instruction. Also we can use
+ * `nghttp2_session_set_next_stream_id()` to avoid to open created
+ * idle streams accidentally if we follow this recommendation.
+ *
+ * If |session| is initialized as server, and ``pri_spec->stream_id``
+ * points to the idle stream, the idle stream is created if it does
+ * not exist. The created idle stream will depend on root stream
+ * (stream 0) with weight 16.
+ *
+ * Otherwise, if stream denoted by ``pri_spec->stream_id`` is not
+ * found, we use default priority instead of given |pri_spec|. That
+ * is make stream depend on root stream with weight 16.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * Attempted to depend on itself; or stream denoted by |stream_id|
+ * already exists; or |stream_id| cannot be used to create idle
+ * stream (in other words, local endpoint has already opened
+ * stream ID greater than or equal to the given stream ID; or
+ * |stream_id| is 0
+ */
+NGHTTP2_EXTERN int
+nghttp2_session_create_idle_stream(nghttp2_session *session, int32_t stream_id,
+ const nghttp2_priority_spec *pri_spec);
+
+/**
+ * @function
+ *
+ * Performs post-process of HTTP Upgrade request. This function can
+ * be called from both client and server, but the behavior is very
+ * different in each other.
+ *
+ * .. warning::
+ *
+ * This function is deprecated in favor of
+ * `nghttp2_session_upgrade2()`, because this function lacks the
+ * parameter to tell the library the request method used in the
+ * original HTTP request. This information is required for client
+ * to validate actual response body length against content-length
+ * header field (see `nghttp2_option_set_no_http_messaging()`). If
+ * HEAD is used in request, the length of response body must be 0
+ * regardless of value included in content-length header field.
+ *
+ * If called from client side, the |settings_payload| must be the
+ * value sent in ``HTTP2-Settings`` header field and must be decoded
+ * by base64url decoder. The |settings_payloadlen| is the length of
+ * |settings_payload|. The |settings_payload| is unpacked and its
+ * setting values will be submitted using `nghttp2_submit_settings()`.
+ * This means that the client application code does not need to submit
+ * SETTINGS by itself. The stream with stream ID=1 is opened and the
+ * |stream_user_data| is used for its stream_user_data. The opened
+ * stream becomes half-closed (local) state.
+ *
+ * If called from server side, the |settings_payload| must be the
+ * value received in ``HTTP2-Settings`` header field and must be
+ * decoded by base64url decoder. The |settings_payloadlen| is the
+ * length of |settings_payload|. It is treated as if the SETTINGS
+ * frame with that payload is received. Thus, callback functions for
+ * the reception of SETTINGS frame will be invoked. The stream with
+ * stream ID=1 is opened. The |stream_user_data| is ignored. The
+ * opened stream becomes half-closed (remote).
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |settings_payload| is badly formed.
+ * :enum:`NGHTTP2_ERR_PROTO`
+ * The stream ID 1 is already used or closed; or is not available.
+ */
+NGHTTP2_EXTERN int nghttp2_session_upgrade(nghttp2_session *session,
+ const uint8_t *settings_payload,
+ size_t settings_payloadlen,
+ void *stream_user_data);
+
+/**
+ * @function
+ *
+ * Performs post-process of HTTP Upgrade request. This function can
+ * be called from both client and server, but the behavior is very
+ * different in each other.
+ *
+ * If called from client side, the |settings_payload| must be the
+ * value sent in ``HTTP2-Settings`` header field and must be decoded
+ * by base64url decoder. The |settings_payloadlen| is the length of
+ * |settings_payload|. The |settings_payload| is unpacked and its
+ * setting values will be submitted using `nghttp2_submit_settings()`.
+ * This means that the client application code does not need to submit
+ * SETTINGS by itself. The stream with stream ID=1 is opened and the
+ * |stream_user_data| is used for its stream_user_data. The opened
+ * stream becomes half-closed (local) state.
+ *
+ * If called from server side, the |settings_payload| must be the
+ * value received in ``HTTP2-Settings`` header field and must be
+ * decoded by base64url decoder. The |settings_payloadlen| is the
+ * length of |settings_payload|. It is treated as if the SETTINGS
+ * frame with that payload is received. Thus, callback functions for
+ * the reception of SETTINGS frame will be invoked. The stream with
+ * stream ID=1 is opened. The |stream_user_data| is ignored. The
+ * opened stream becomes half-closed (remote).
+ *
+ * If the request method is HEAD, pass nonzero value to
+ * |head_request|. Otherwise, pass 0.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |settings_payload| is badly formed.
+ * :enum:`NGHTTP2_ERR_PROTO`
+ * The stream ID 1 is already used or closed; or is not available.
+ */
+NGHTTP2_EXTERN int nghttp2_session_upgrade2(nghttp2_session *session,
+ const uint8_t *settings_payload,
+ size_t settings_payloadlen,
+ int head_request,
+ void *stream_user_data);
+
+/**
+ * @function
+ *
+ * Serializes the SETTINGS values |iv| in the |buf|. The size of the
+ * |buf| is specified by |buflen|. The number of entries in the |iv|
+ * array is given by |niv|. The required space in |buf| for the |niv|
+ * entries is ``8*niv`` bytes and if the given buffer is too small, an
+ * error is returned. This function is used mainly for creating a
+ * SETTINGS payload to be sent with the ``HTTP2-Settings`` header
+ * field in an HTTP Upgrade request. The data written in |buf| is NOT
+ * base64url encoded and the application is responsible for encoding.
+ *
+ * This function returns the number of bytes written in |buf|, or one
+ * of the following negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |iv| contains duplicate settings ID or invalid value.
+ *
+ * :enum:`NGHTTP2_ERR_INSUFF_BUFSIZE`
+ * The provided |buflen| size is too small to hold the output.
+ */
+NGHTTP2_EXTERN ssize_t
+nghttp2_pack_settings_payload(uint8_t *buf, size_t buflen,
+ const nghttp2_settings_entry *iv, size_t niv);
+
+/**
+ * @function
+ *
+ * Returns string describing the |lib_error_code|. The
+ * |lib_error_code| must be one of the :enum:`nghttp2_error`.
+ */
+NGHTTP2_EXTERN const char *nghttp2_strerror(int lib_error_code);
+
+/**
+ * @function
+ *
+ * Returns string representation of HTTP/2 error code |error_code|
+ * (e.g., ``PROTOCOL_ERROR`` is returned if ``error_code ==
+ * NGHTTP2_PROTOCOL_ERROR``). If string representation is unknown for
+ * given |error_code|, this function returns string ``unknown``.
+ */
+NGHTTP2_EXTERN const char *nghttp2_http2_strerror(uint32_t error_code);
+
+/**
+ * @function
+ *
+ * Initializes |pri_spec| with the |stream_id| of the stream to depend
+ * on with |weight| and its exclusive flag. If |exclusive| is
+ * nonzero, exclusive flag is set.
+ *
+ * The |weight| must be in [:enum:`NGHTTP2_MIN_WEIGHT`,
+ * :enum:`NGHTTP2_MAX_WEIGHT`], inclusive.
+ */
+NGHTTP2_EXTERN void nghttp2_priority_spec_init(nghttp2_priority_spec *pri_spec,
+ int32_t stream_id,
+ int32_t weight, int exclusive);
+
+/**
+ * @function
+ *
+ * Initializes |pri_spec| with the default values. The default values
+ * are: stream_id = 0, weight = :macro:`NGHTTP2_DEFAULT_WEIGHT` and
+ * exclusive = 0.
+ */
+NGHTTP2_EXTERN void
+nghttp2_priority_spec_default_init(nghttp2_priority_spec *pri_spec);
+
+/**
+ * @function
+ *
+ * Returns nonzero if the |pri_spec| is filled with default values.
+ */
+NGHTTP2_EXTERN int
+nghttp2_priority_spec_check_default(const nghttp2_priority_spec *pri_spec);
+
+/**
+ * @function
+ *
+ * Submits HEADERS frame and optionally one or more DATA frames.
+ *
+ * The |pri_spec| is priority specification of this request. ``NULL``
+ * means the default priority (see
+ * `nghttp2_priority_spec_default_init()`). To specify the priority,
+ * use `nghttp2_priority_spec_init()`. If |pri_spec| is not ``NULL``,
+ * this function will copy its data members.
+ *
+ * The ``pri_spec->weight`` must be in [:enum:`NGHTTP2_MIN_WEIGHT`,
+ * :enum:`NGHTTP2_MAX_WEIGHT`], inclusive. If ``pri_spec->weight`` is
+ * strictly less than :enum:`NGHTTP2_MIN_WEIGHT`, it becomes
+ * :enum:`NGHTTP2_MIN_WEIGHT`. If it is strictly greater than
+ * :enum:`NGHTTP2_MAX_WEIGHT`, it becomes :enum:`NGHTTP2_MAX_WEIGHT`.
+ *
+ * The |nva| is an array of name/value pair :type:`nghttp2_nv` with
+ * |nvlen| elements. The application is responsible to include
+ * required pseudo-header fields (header field whose name starts with
+ * ":") in |nva| and must place pseudo-headers before regular header
+ * fields.
+ *
+ * This function creates copies of all name/value pairs in |nva|. It
+ * also lower-cases all names in |nva|. The order of elements in
+ * |nva| is preserved. For header fields with
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_NAME` and
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_VALUE` are set, header field name
+ * and value are not copied respectively. With
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_NAME`, application is responsible to
+ * pass header field name in lowercase. The application should
+ * maintain the references to them until
+ * :type:`nghttp2_on_frame_send_callback` or
+ * :type:`nghttp2_on_frame_not_send_callback` is called.
+ *
+ * HTTP/2 specification has requirement about header fields in the
+ * request HEADERS. See the specification for more details.
+ *
+ * If |data_prd| is not ``NULL``, it provides data which will be sent
+ * in subsequent DATA frames. In this case, a method that allows
+ * request message bodies
+ * (https://tools.ietf.org/html/rfc7231#section-4) must be specified
+ * with ``:method`` key in |nva| (e.g. ``POST``). This function does
+ * not take ownership of the |data_prd|. The function copies the
+ * members of the |data_prd|. If |data_prd| is ``NULL``, HEADERS have
+ * END_STREAM set. The |stream_user_data| is data associated to the
+ * stream opened by this request and can be an arbitrary pointer,
+ * which can be retrieved later by
+ * `nghttp2_session_get_stream_user_data()`.
+ *
+ * This function returns assigned stream ID if it succeeds, or one of
+ * the following negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE`
+ * No stream ID is available because maximum stream ID was
+ * reached.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * Trying to depend on itself (new stream ID equals
+ * ``pri_spec->stream_id``).
+ * :enum:`NGHTTP2_ERR_PROTO`
+ * The |session| is server session.
+ *
+ * .. warning::
+ *
+ * This function returns assigned stream ID if it succeeds. But
+ * that stream is not opened yet. The application must not submit
+ * frame to that stream ID before
+ * :type:`nghttp2_before_frame_send_callback` is called for this
+ * frame.
+ *
+ */
+NGHTTP2_EXTERN int32_t
+nghttp2_submit_request(nghttp2_session *session,
+ const nghttp2_priority_spec *pri_spec,
+ const nghttp2_nv *nva, size_t nvlen,
+ const nghttp2_data_provider *data_prd,
+ void *stream_user_data);
+
+/**
+ * @function
+ *
+ * Submits response HEADERS frame and optionally one or more DATA
+ * frames against the stream |stream_id|.
+ *
+ * The |nva| is an array of name/value pair :type:`nghttp2_nv` with
+ * |nvlen| elements. The application is responsible to include
+ * required pseudo-header fields (header field whose name starts with
+ * ":") in |nva| and must place pseudo-headers before regular header
+ * fields.
+ *
+ * This function creates copies of all name/value pairs in |nva|. It
+ * also lower-cases all names in |nva|. The order of elements in
+ * |nva| is preserved. For header fields with
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_NAME` and
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_VALUE` are set, header field name
+ * and value are not copied respectively. With
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_NAME`, application is responsible to
+ * pass header field name in lowercase. The application should
+ * maintain the references to them until
+ * :type:`nghttp2_on_frame_send_callback` or
+ * :type:`nghttp2_on_frame_not_send_callback` is called.
+ *
+ * HTTP/2 specification has requirement about header fields in the
+ * response HEADERS. See the specification for more details.
+ *
+ * If |data_prd| is not ``NULL``, it provides data which will be sent
+ * in subsequent DATA frames. This function does not take ownership
+ * of the |data_prd|. The function copies the members of the
+ * |data_prd|. If |data_prd| is ``NULL``, HEADERS will have
+ * END_STREAM flag set.
+ *
+ * This method can be used as normal HTTP response and push response.
+ * When pushing a resource using this function, the |session| must be
+ * configured using `nghttp2_session_server_new()` or its variants and
+ * the target stream denoted by the |stream_id| must be reserved using
+ * `nghttp2_submit_push_promise()`.
+ *
+ * To send non-final response headers (e.g., HTTP status 101), don't
+ * use this function because this function half-closes the outbound
+ * stream. Instead, use `nghttp2_submit_headers()` for this purpose.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |stream_id| is 0.
+ * :enum:`NGHTTP2_ERR_DATA_EXIST`
+ * DATA or HEADERS has been already submitted and not fully
+ * processed yet. Normally, this does not happen, but when
+ * application wrongly calls `nghttp2_submit_response()` twice,
+ * this may happen.
+ * :enum:`NGHTTP2_ERR_PROTO`
+ * The |session| is client session.
+ *
+ * .. warning::
+ *
+ * Calling this function twice for the same stream ID may lead to
+ * program crash. It is generally considered to a programming error
+ * to commit response twice.
+ */
+NGHTTP2_EXTERN int
+nghttp2_submit_response(nghttp2_session *session, int32_t stream_id,
+ const nghttp2_nv *nva, size_t nvlen,
+ const nghttp2_data_provider *data_prd);
+
+/**
+ * @function
+ *
+ * Submits trailer fields HEADERS against the stream |stream_id|.
+ *
+ * The |nva| is an array of name/value pair :type:`nghttp2_nv` with
+ * |nvlen| elements. The application is responsible not to include
+ * pseudo-header fields (header field whose name starts with ":") in
+ * |nva|.
+ *
+ * This function creates copies of all name/value pairs in |nva|. It
+ * also lower-cases all names in |nva|. The order of elements in
+ * |nva| is preserved. For header fields with
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_NAME` and
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_VALUE` are set, header field name
+ * and value are not copied respectively. With
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_NAME`, application is responsible to
+ * pass header field name in lowercase. The application should
+ * maintain the references to them until
+ * :type:`nghttp2_on_frame_send_callback` or
+ * :type:`nghttp2_on_frame_not_send_callback` is called.
+ *
+ * For server, trailer fields must follow response HEADERS or response
+ * DATA without END_STREAM flat set. The library does not enforce
+ * this requirement, and applications should do this for themselves.
+ * If `nghttp2_submit_trailer()` is called before any response HEADERS
+ * submission (usually by `nghttp2_submit_response()`), the content of
+ * |nva| will be sent as response headers, which will result in error.
+ *
+ * This function has the same effect with `nghttp2_submit_headers()`,
+ * with flags = :enum:`NGHTTP2_FLAG_END_STREAM` and both pri_spec and
+ * stream_user_data to NULL.
+ *
+ * To submit trailer fields after `nghttp2_submit_response()` is
+ * called, the application has to specify
+ * :type:`nghttp2_data_provider` to `nghttp2_submit_response()`.
+ * Inside of :type:`nghttp2_data_source_read_callback`, when setting
+ * :enum:`NGHTTP2_DATA_FLAG_EOF`, also set
+ * :enum:`NGHTTP2_DATA_FLAG_NO_END_STREAM`. After that, the
+ * application can send trailer fields using
+ * `nghttp2_submit_trailer()`. `nghttp2_submit_trailer()` can be used
+ * inside :type:`nghttp2_data_source_read_callback`.
+ *
+ * This function returns 0 if it succeeds and |stream_id| is -1.
+ * Otherwise, this function returns 0 if it succeeds, or one of the
+ * following negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |stream_id| is 0.
+ */
+NGHTTP2_EXTERN int nghttp2_submit_trailer(nghttp2_session *session,
+ int32_t stream_id,
+ const nghttp2_nv *nva, size_t nvlen);
+
+/**
+ * @function
+ *
+ * Submits HEADERS frame. The |flags| is bitwise OR of the
+ * following values:
+ *
+ * * :enum:`NGHTTP2_FLAG_END_STREAM`
+ *
+ * If |flags| includes :enum:`NGHTTP2_FLAG_END_STREAM`, this frame has
+ * END_STREAM flag set.
+ *
+ * The library handles the CONTINUATION frame internally and it
+ * correctly sets END_HEADERS to the last sequence of the PUSH_PROMISE
+ * or CONTINUATION frame.
+ *
+ * If the |stream_id| is -1, this frame is assumed as request (i.e.,
+ * request HEADERS frame which opens new stream). In this case, the
+ * assigned stream ID will be returned. Otherwise, specify stream ID
+ * in |stream_id|.
+ *
+ * The |pri_spec| is priority specification of this request. ``NULL``
+ * means the default priority (see
+ * `nghttp2_priority_spec_default_init()`). To specify the priority,
+ * use `nghttp2_priority_spec_init()`. If |pri_spec| is not ``NULL``,
+ * this function will copy its data members.
+ *
+ * The ``pri_spec->weight`` must be in [:enum:`NGHTTP2_MIN_WEIGHT`,
+ * :enum:`NGHTTP2_MAX_WEIGHT`], inclusive. If ``pri_spec->weight`` is
+ * strictly less than :enum:`NGHTTP2_MIN_WEIGHT`, it becomes
+ * :enum:`NGHTTP2_MIN_WEIGHT`. If it is strictly greater than
+ * :enum:`NGHTTP2_MAX_WEIGHT`, it becomes :enum:`NGHTTP2_MAX_WEIGHT`.
+ *
+ * The |nva| is an array of name/value pair :type:`nghttp2_nv` with
+ * |nvlen| elements. The application is responsible to include
+ * required pseudo-header fields (header field whose name starts with
+ * ":") in |nva| and must place pseudo-headers before regular header
+ * fields.
+ *
+ * This function creates copies of all name/value pairs in |nva|. It
+ * also lower-cases all names in |nva|. The order of elements in
+ * |nva| is preserved. For header fields with
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_NAME` and
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_VALUE` are set, header field name
+ * and value are not copied respectively. With
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_NAME`, application is responsible to
+ * pass header field name in lowercase. The application should
+ * maintain the references to them until
+ * :type:`nghttp2_on_frame_send_callback` or
+ * :type:`nghttp2_on_frame_not_send_callback` is called.
+ *
+ * The |stream_user_data| is a pointer to an arbitrary data which is
+ * associated to the stream this frame will open. Therefore it is
+ * only used if this frame opens streams, in other words, it changes
+ * stream state from idle or reserved to open.
+ *
+ * This function is low-level in a sense that the application code can
+ * specify flags directly. For usual HTTP request,
+ * `nghttp2_submit_request()` is useful. Likewise, for HTTP response,
+ * prefer `nghttp2_submit_response()`.
+ *
+ * This function returns newly assigned stream ID if it succeeds and
+ * |stream_id| is -1. Otherwise, this function returns 0 if it
+ * succeeds, or one of the following negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE`
+ * No stream ID is available because maximum stream ID was
+ * reached.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |stream_id| is 0; or trying to depend on itself (stream ID
+ * equals ``pri_spec->stream_id``).
+ * :enum:`NGHTTP2_ERR_DATA_EXIST`
+ * DATA or HEADERS has been already submitted and not fully
+ * processed yet. This happens if stream denoted by |stream_id|
+ * is in reserved state.
+ * :enum:`NGHTTP2_ERR_PROTO`
+ * The |stream_id| is -1, and |session| is server session.
+ *
+ * .. warning::
+ *
+ * This function returns assigned stream ID if it succeeds and
+ * |stream_id| is -1. But that stream is not opened yet. The
+ * application must not submit frame to that stream ID before
+ * :type:`nghttp2_before_frame_send_callback` is called for this
+ * frame.
+ *
+ */
+NGHTTP2_EXTERN int32_t
+nghttp2_submit_headers(nghttp2_session *session, uint8_t flags,
+ int32_t stream_id, const nghttp2_priority_spec *pri_spec,
+ const nghttp2_nv *nva, size_t nvlen,
+ void *stream_user_data);
+
+/**
+ * @function
+ *
+ * Submits one or more DATA frames to the stream |stream_id|. The
+ * data to be sent are provided by |data_prd|. If |flags| contains
+ * :enum:`NGHTTP2_FLAG_END_STREAM`, the last DATA frame has END_STREAM
+ * flag set.
+ *
+ * This function does not take ownership of the |data_prd|. The
+ * function copies the members of the |data_prd|.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_DATA_EXIST`
+ * DATA or HEADERS has been already submitted and not fully
+ * processed yet.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |stream_id| is 0.
+ * :enum:`NGHTTP2_ERR_STREAM_CLOSED`
+ * The stream was already closed; or the |stream_id| is invalid.
+ *
+ * .. note::
+ *
+ * Currently, only one DATA or HEADERS is allowed for a stream at a
+ * time. Submitting these frames more than once before first DATA
+ * or HEADERS is finished results in :enum:`NGHTTP2_ERR_DATA_EXIST`
+ * error code. The earliest callback which tells that previous
+ * frame is done is :type:`nghttp2_on_frame_send_callback`. In side
+ * that callback, new data can be submitted using
+ * `nghttp2_submit_data()`. Of course, all data except for last one
+ * must not have :enum:`NGHTTP2_FLAG_END_STREAM` flag set in
+ * |flags|. This sounds a bit complicated, and we recommend to use
+ * `nghttp2_submit_request()` and `nghttp2_submit_response()` to
+ * avoid this cascading issue. The experience shows that for HTTP
+ * use, these two functions are enough to implement both client and
+ * server.
+ */
+NGHTTP2_EXTERN int nghttp2_submit_data(nghttp2_session *session, uint8_t flags,
+ int32_t stream_id,
+ const nghttp2_data_provider *data_prd);
+
+/**
+ * @function
+ *
+ * Submits PRIORITY frame to change the priority of stream |stream_id|
+ * to the priority specification |pri_spec|.
+ *
+ * The |flags| is currently ignored and should be
+ * :enum:`NGHTTP2_FLAG_NONE`.
+ *
+ * The |pri_spec| is priority specification of this request. ``NULL``
+ * is not allowed for this function. To specify the priority, use
+ * `nghttp2_priority_spec_init()`. This function will copy its data
+ * members.
+ *
+ * The ``pri_spec->weight`` must be in [:enum:`NGHTTP2_MIN_WEIGHT`,
+ * :enum:`NGHTTP2_MAX_WEIGHT`], inclusive. If ``pri_spec->weight`` is
+ * strictly less than :enum:`NGHTTP2_MIN_WEIGHT`, it becomes
+ * :enum:`NGHTTP2_MIN_WEIGHT`. If it is strictly greater than
+ * :enum:`NGHTTP2_MAX_WEIGHT`, it becomes :enum:`NGHTTP2_MAX_WEIGHT`.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |stream_id| is 0; or the |pri_spec| is NULL; or trying to
+ * depend on itself.
+ */
+NGHTTP2_EXTERN int
+nghttp2_submit_priority(nghttp2_session *session, uint8_t flags,
+ int32_t stream_id,
+ const nghttp2_priority_spec *pri_spec);
+
+/**
+ * @function
+ *
+ * Submits RST_STREAM frame to cancel/reject the stream |stream_id|
+ * with the error code |error_code|.
+ *
+ * The pre-defined error code is one of :enum:`nghttp2_error_code`.
+ *
+ * The |flags| is currently ignored and should be
+ * :enum:`NGHTTP2_FLAG_NONE`.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |stream_id| is 0.
+ */
+NGHTTP2_EXTERN int nghttp2_submit_rst_stream(nghttp2_session *session,
+ uint8_t flags, int32_t stream_id,
+ uint32_t error_code);
+
+/**
+ * @function
+ *
+ * Stores local settings and submits SETTINGS frame. The |iv| is the
+ * pointer to the array of :type:`nghttp2_settings_entry`. The |niv|
+ * indicates the number of :type:`nghttp2_settings_entry`.
+ *
+ * The |flags| is currently ignored and should be
+ * :enum:`NGHTTP2_FLAG_NONE`.
+ *
+ * This function does not take ownership of the |iv|. This function
+ * copies all the elements in the |iv|.
+ *
+ * While updating individual stream's local window size, if the window
+ * size becomes strictly larger than NGHTTP2_MAX_WINDOW_SIZE,
+ * RST_STREAM is issued against such a stream.
+ *
+ * SETTINGS with :enum:`NGHTTP2_FLAG_ACK` is automatically submitted
+ * by the library and application could not send it at its will.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |iv| contains invalid value (e.g., initial window size
+ * strictly greater than (1 << 31) - 1.
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int nghttp2_submit_settings(nghttp2_session *session,
+ uint8_t flags,
+ const nghttp2_settings_entry *iv,
+ size_t niv);
+
+/**
+ * @function
+ *
+ * Submits PUSH_PROMISE frame.
+ *
+ * The |flags| is currently ignored. The library handles the
+ * CONTINUATION frame internally and it correctly sets END_HEADERS to
+ * the last sequence of the PUSH_PROMISE or CONTINUATION frame.
+ *
+ * The |stream_id| must be client initiated stream ID.
+ *
+ * The |nva| is an array of name/value pair :type:`nghttp2_nv` with
+ * |nvlen| elements. The application is responsible to include
+ * required pseudo-header fields (header field whose name starts with
+ * ":") in |nva| and must place pseudo-headers before regular header
+ * fields.
+ *
+ * This function creates copies of all name/value pairs in |nva|. It
+ * also lower-cases all names in |nva|. The order of elements in
+ * |nva| is preserved. For header fields with
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_NAME` and
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_VALUE` are set, header field name
+ * and value are not copied respectively. With
+ * :enum:`NGHTTP2_NV_FLAG_NO_COPY_NAME`, application is responsible to
+ * pass header field name in lowercase. The application should
+ * maintain the references to them until
+ * :type:`nghttp2_on_frame_send_callback` or
+ * :type:`nghttp2_on_frame_not_send_callback` is called.
+ *
+ * The |promised_stream_user_data| is a pointer to an arbitrary data
+ * which is associated to the promised stream this frame will open and
+ * make it in reserved state. It is available using
+ * `nghttp2_session_get_stream_user_data()`. The application can
+ * access it in :type:`nghttp2_before_frame_send_callback` and
+ * :type:`nghttp2_on_frame_send_callback` of this frame.
+ *
+ * The client side is not allowed to use this function.
+ *
+ * To submit response headers and data, use
+ * `nghttp2_submit_response()`.
+ *
+ * This function returns assigned promised stream ID if it succeeds,
+ * or one of the following negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_PROTO`
+ * This function was invoked when |session| is initialized as
+ * client.
+ * :enum:`NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE`
+ * No stream ID is available because maximum stream ID was
+ * reached.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |stream_id| is 0; The |stream_id| does not designate stream
+ * that peer initiated.
+ * :enum:`NGHTTP2_ERR_STREAM_CLOSED`
+ * The stream was already closed; or the |stream_id| is invalid.
+ *
+ * .. warning::
+ *
+ * This function returns assigned promised stream ID if it succeeds.
+ * As of 1.16.0, stream object for pushed resource is created when
+ * this function succeeds. In that case, the application can submit
+ * push response for the promised frame.
+ *
+ * In 1.15.0 or prior versions, pushed stream is not opened yet when
+ * this function succeeds. The application must not submit frame to
+ * that stream ID before :type:`nghttp2_before_frame_send_callback`
+ * is called for this frame.
+ *
+ */
+NGHTTP2_EXTERN int32_t
+nghttp2_submit_push_promise(nghttp2_session *session, uint8_t flags,
+ int32_t stream_id, const nghttp2_nv *nva,
+ size_t nvlen, void *promised_stream_user_data);
+
+/**
+ * @function
+ *
+ * Submits PING frame. You don't have to send PING back when you
+ * received PING frame. The library automatically submits PING frame
+ * in this case.
+ *
+ * The |flags| is bitwise OR of 0 or more of the following value.
+ *
+ * * :enum:`NGHTTP2_FLAG_ACK`
+ *
+ * Unless `nghttp2_option_set_no_auto_ping_ack()` is used, the |flags|
+ * should be :enum:`NGHTTP2_FLAG_NONE`.
+ *
+ * If the |opaque_data| is non ``NULL``, then it should point to the 8
+ * bytes array of memory to specify opaque data to send with PING
+ * frame. If the |opaque_data| is ``NULL``, zero-cleared 8 bytes will
+ * be sent as opaque data.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int nghttp2_submit_ping(nghttp2_session *session, uint8_t flags,
+ const uint8_t *opaque_data);
+
+/**
+ * @function
+ *
+ * Submits GOAWAY frame with the last stream ID |last_stream_id| and
+ * the error code |error_code|.
+ *
+ * The pre-defined error code is one of :enum:`nghttp2_error_code`.
+ *
+ * The |flags| is currently ignored and should be
+ * :enum:`NGHTTP2_FLAG_NONE`.
+ *
+ * The |last_stream_id| is peer's stream ID or 0. So if |session| is
+ * initialized as client, |last_stream_id| must be even or 0. If
+ * |session| is initialized as server, |last_stream_id| must be odd or
+ * 0.
+ *
+ * The HTTP/2 specification says last_stream_id must not be increased
+ * from the value previously sent. So the actual value sent as
+ * last_stream_id is the minimum value between the given
+ * |last_stream_id| and the last_stream_id previously sent to the
+ * peer.
+ *
+ * If the |opaque_data| is not ``NULL`` and |opaque_data_len| is not
+ * zero, those data will be sent as additional debug data. The
+ * library makes a copy of the memory region pointed by |opaque_data|
+ * with the length |opaque_data_len|, so the caller does not need to
+ * keep this memory after the return of this function. If the
+ * |opaque_data_len| is 0, the |opaque_data| could be ``NULL``.
+ *
+ * After successful transmission of GOAWAY, following things happen.
+ * All incoming streams having strictly more than |last_stream_id| are
+ * closed. All incoming HEADERS which starts new stream are simply
+ * ignored. After all active streams are handled, both
+ * `nghttp2_session_want_read()` and `nghttp2_session_want_write()`
+ * return 0 and the application can close session.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |opaque_data_len| is too large; the |last_stream_id| is
+ * invalid.
+ */
+NGHTTP2_EXTERN int nghttp2_submit_goaway(nghttp2_session *session,
+ uint8_t flags, int32_t last_stream_id,
+ uint32_t error_code,
+ const uint8_t *opaque_data,
+ size_t opaque_data_len);
+
+/**
+ * @function
+ *
+ * Returns the last stream ID of a stream for which
+ * :type:`nghttp2_on_frame_recv_callback` was invoked most recently.
+ * The returned value can be used as last_stream_id parameter for
+ * `nghttp2_submit_goaway()` and
+ * `nghttp2_session_terminate_session2()`.
+ *
+ * This function always succeeds.
+ */
+NGHTTP2_EXTERN int32_t
+nghttp2_session_get_last_proc_stream_id(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Returns nonzero if new request can be sent from local endpoint.
+ *
+ * This function return 0 if request is not allowed for this session.
+ * There are several reasons why request is not allowed. Some of the
+ * reasons are: session is server; stream ID has been spent; GOAWAY
+ * has been sent or received.
+ *
+ * The application can call `nghttp2_submit_request()` without
+ * consulting this function. In that case, `nghttp2_submit_request()`
+ * may return error. Or, request is failed to sent, and
+ * :type:`nghttp2_on_stream_close_callback` is called.
+ */
+NGHTTP2_EXTERN int
+nghttp2_session_check_request_allowed(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Returns nonzero if |session| is initialized as server side session.
+ */
+NGHTTP2_EXTERN int
+nghttp2_session_check_server_session(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Submits WINDOW_UPDATE frame.
+ *
+ * The |flags| is currently ignored and should be
+ * :enum:`NGHTTP2_FLAG_NONE`.
+ *
+ * The |stream_id| is the stream ID to send this WINDOW_UPDATE. To
+ * send connection level WINDOW_UPDATE, specify 0 to |stream_id|.
+ *
+ * If the |window_size_increment| is positive, the WINDOW_UPDATE with
+ * that value as window_size_increment is queued. If the
+ * |window_size_increment| is larger than the received bytes from the
+ * remote endpoint, the local window size is increased by that
+ * difference. If the sole purpose is to increase the local window
+ * size, consider to use `nghttp2_session_set_local_window_size()`.
+ *
+ * If the |window_size_increment| is negative, the local window size
+ * is decreased by -|window_size_increment|. If automatic
+ * WINDOW_UPDATE is enabled
+ * (`nghttp2_option_set_no_auto_window_update()`), and the library
+ * decided that the WINDOW_UPDATE should be submitted, then
+ * WINDOW_UPDATE is queued with the current received bytes count. If
+ * the sole purpose is to decrease the local window size, consider to
+ * use `nghttp2_session_set_local_window_size()`.
+ *
+ * If the |window_size_increment| is 0, the function does nothing and
+ * returns 0.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_FLOW_CONTROL`
+ * The local window size overflow or gets negative.
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int nghttp2_submit_window_update(nghttp2_session *session,
+ uint8_t flags,
+ int32_t stream_id,
+ int32_t window_size_increment);
+
+/**
+ * @function
+ *
+ * Set local window size (local endpoints's window size) to the given
+ * |window_size| for the given stream denoted by |stream_id|. To
+ * change connection level window size, specify 0 to |stream_id|. To
+ * increase window size, this function may submit WINDOW_UPDATE frame
+ * to transmission queue.
+ *
+ * The |flags| is currently ignored and should be
+ * :enum:`NGHTTP2_FLAG_NONE`.
+ *
+ * This sounds similar to `nghttp2_submit_window_update()`, but there
+ * are 2 differences. The first difference is that this function
+ * takes the absolute value of window size to set, rather than the
+ * delta. To change the window size, this may be easier to use since
+ * the application just declares the intended window size, rather than
+ * calculating delta. The second difference is that
+ * `nghttp2_submit_window_update()` affects the received bytes count
+ * which has not acked yet. By the specification of
+ * `nghttp2_submit_window_update()`, to strictly increase the local
+ * window size, we have to submit delta including all received bytes
+ * count, which might not be desirable in some cases. On the other
+ * hand, this function does not affect the received bytes count. It
+ * just sets the local window size to the given value.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The |stream_id| is negative.
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int
+nghttp2_session_set_local_window_size(nghttp2_session *session, uint8_t flags,
+ int32_t stream_id, int32_t window_size);
+
+/**
+ * @function
+ *
+ * Submits extension frame.
+ *
+ * Application can pass arbitrary frame flags and stream ID in |flags|
+ * and |stream_id| respectively. The |payload| is opaque pointer, and
+ * it can be accessible though ``frame->ext.payload`` in
+ * :type:`nghttp2_pack_extension_callback`. The library will not own
+ * passed |payload| pointer.
+ *
+ * The application must set :type:`nghttp2_pack_extension_callback`
+ * using `nghttp2_session_callbacks_set_pack_extension_callback()`.
+ *
+ * The application should retain the memory pointed by |payload| until
+ * the transmission of extension frame is done (which is indicated by
+ * :type:`nghttp2_on_frame_send_callback`), or transmission fails
+ * (which is indicated by :type:`nghttp2_on_frame_not_send_callback`).
+ * If application does not touch this memory region after packing it
+ * into a wire format, application can free it inside
+ * :type:`nghttp2_pack_extension_callback`.
+ *
+ * The standard HTTP/2 frame cannot be sent with this function, so
+ * |type| must be strictly grater than 0x9. Otherwise, this function
+ * will fail with error code :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_INVALID_STATE`
+ * If :type:`nghttp2_pack_extension_callback` is not set.
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * If |type| specifies standard HTTP/2 frame type. The frame
+ * types in the rage [0x0, 0x9], both inclusive, are standard
+ * HTTP/2 frame type, and cannot be sent using this function.
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory
+ */
+NGHTTP2_EXTERN int nghttp2_submit_extension(nghttp2_session *session,
+ uint8_t type, uint8_t flags,
+ int32_t stream_id, void *payload);
+
+/**
+ * @struct
+ *
+ * The payload of ALTSVC frame. ALTSVC frame is a non-critical
+ * extension to HTTP/2. If this frame is received, and
+ * `nghttp2_option_set_user_recv_extension_type()` is not set, and
+ * `nghttp2_option_set_builtin_recv_extension_type()` is set for
+ * :enum:`NGHTTP2_ALTSVC`, ``nghttp2_extension.payload`` will point to
+ * this struct.
+ *
+ * It has the following members:
+ */
+typedef struct {
+ /**
+ * The pointer to origin which this alternative service is
+ * associated with. This is not necessarily NULL-terminated.
+ */
+ uint8_t *origin;
+ /**
+ * The length of the |origin|.
+ */
+ size_t origin_len;
+ /**
+ * The pointer to Alt-Svc field value contained in ALTSVC frame.
+ * This is not necessarily NULL-terminated.
+ */
+ uint8_t *field_value;
+ /**
+ * The length of the |field_value|.
+ */
+ size_t field_value_len;
+} nghttp2_ext_altsvc;
+
+/**
+ * @function
+ *
+ * Submits ALTSVC frame.
+ *
+ * ALTSVC frame is a non-critical extension to HTTP/2, and defined in
+ * is defined in `RFC 7383
+ * <https://tools.ietf.org/html/rfc7838#section-4>`_.
+ *
+ * The |flags| is currently ignored and should be
+ * :enum:`NGHTTP2_FLAG_NONE`.
+ *
+ * The |origin| points to the origin this alternative service is
+ * associated with. The |origin_len| is the length of the origin. If
+ * |stream_id| is 0, the origin must be specified. If |stream_id| is
+ * not zero, the origin must be empty (in other words, |origin_len|
+ * must be 0).
+ *
+ * The ALTSVC frame is only usable from server side. If this function
+ * is invoked with client side session, this function returns
+ * :enum:`NGHTTP2_ERR_INVALID_STATE`.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory
+ * :enum:`NGHTTP2_ERR_INVALID_STATE`
+ * The function is called from client side session
+ * :enum:`NGHTTP2_ERR_INVALID_ARGUMENT`
+ * The sum of |origin_len| and |field_value_len| is larger than
+ * 16382; or |origin_len| is 0 while |stream_id| is 0; or
+ * |origin_len| is not 0 while |stream_id| is not 0.
+ */
+NGHTTP2_EXTERN int nghttp2_submit_altsvc(nghttp2_session *session,
+ uint8_t flags, int32_t stream_id,
+ const uint8_t *origin,
+ size_t origin_len,
+ const uint8_t *field_value,
+ size_t field_value_len);
+
+/**
+ * @function
+ *
+ * Compares ``lhs->name`` of length ``lhs->namelen`` bytes and
+ * ``rhs->name`` of length ``rhs->namelen`` bytes. Returns negative
+ * integer if ``lhs->name`` is found to be less than ``rhs->name``; or
+ * returns positive integer if ``lhs->name`` is found to be greater
+ * than ``rhs->name``; or returns 0 otherwise.
+ */
+NGHTTP2_EXTERN int nghttp2_nv_compare_name(const nghttp2_nv *lhs,
+ const nghttp2_nv *rhs);
+
+/**
+ * @function
+ *
+ * A helper function for dealing with NPN in client side or ALPN in
+ * server side. The |in| contains peer's protocol list in preferable
+ * order. The format of |in| is length-prefixed and not
+ * null-terminated. For example, ``h2`` and
+ * ``http/1.1`` stored in |in| like this::
+ *
+ * in[0] = 2
+ * in[1..2] = "h2"
+ * in[3] = 8
+ * in[4..11] = "http/1.1"
+ * inlen = 12
+ *
+ * The selection algorithm is as follows:
+ *
+ * 1. If peer's list contains HTTP/2 protocol the library supports,
+ * it is selected and returns 1. The following step is not taken.
+ *
+ * 2. If peer's list contains ``http/1.1``, this function selects
+ * ``http/1.1`` and returns 0. The following step is not taken.
+ *
+ * 3. This function selects nothing and returns -1 (So called
+ * non-overlap case). In this case, |out| and |outlen| are left
+ * untouched.
+ *
+ * Selecting ``h2`` means that ``h2`` is written into |*out| and its
+ * length (which is 2) is assigned to |*outlen|.
+ *
+ * For ALPN, refer to https://tools.ietf.org/html/rfc7301
+ *
+ * See http://technotes.googlecode.com/git/nextprotoneg.html for more
+ * details about NPN.
+ *
+ * For NPN, to use this method you should do something like::
+ *
+ * static int select_next_proto_cb(SSL* ssl,
+ * unsigned char **out,
+ * unsigned char *outlen,
+ * const unsigned char *in,
+ * unsigned int inlen,
+ * void *arg)
+ * {
+ * int rv;
+ * rv = nghttp2_select_next_protocol(out, outlen, in, inlen);
+ * if (rv == -1) {
+ * return SSL_TLSEXT_ERR_NOACK;
+ * }
+ * if (rv == 1) {
+ * ((MyType*)arg)->http2_selected = 1;
+ * }
+ * return SSL_TLSEXT_ERR_OK;
+ * }
+ * ...
+ * SSL_CTX_set_next_proto_select_cb(ssl_ctx, select_next_proto_cb, my_obj);
+ *
+ */
+NGHTTP2_EXTERN int nghttp2_select_next_protocol(unsigned char **out,
+ unsigned char *outlen,
+ const unsigned char *in,
+ unsigned int inlen);
+
+/**
+ * @function
+ *
+ * Returns a pointer to a nghttp2_info struct with version information
+ * about the run-time library in use. The |least_version| argument
+ * can be set to a 24 bit numerical value for the least accepted
+ * version number and if the condition is not met, this function will
+ * return a ``NULL``. Pass in 0 to skip the version checking.
+ */
+NGHTTP2_EXTERN nghttp2_info *nghttp2_version(int least_version);
+
+/**
+ * @function
+ *
+ * Returns nonzero if the :type:`nghttp2_error` library error code
+ * |lib_error| is fatal.
+ */
+NGHTTP2_EXTERN int nghttp2_is_fatal(int lib_error_code);
+
+/**
+ * @function
+ *
+ * Returns nonzero if HTTP header field name |name| of length |len| is
+ * valid according to http://tools.ietf.org/html/rfc7230#section-3.2
+ *
+ * Because this is a header field name in HTTP2, the upper cased alphabet
+ * is treated as error.
+ */
+NGHTTP2_EXTERN int nghttp2_check_header_name(const uint8_t *name, size_t len);
+
+/**
+ * @function
+ *
+ * Returns nonzero if HTTP header field value |value| of length |len|
+ * is valid according to
+ * http://tools.ietf.org/html/rfc7230#section-3.2
+ */
+NGHTTP2_EXTERN int nghttp2_check_header_value(const uint8_t *value, size_t len);
+
+/* HPACK API */
+
+struct nghttp2_hd_deflater;
+
+/**
+ * @struct
+ *
+ * HPACK deflater object.
+ */
+typedef struct nghttp2_hd_deflater nghttp2_hd_deflater;
+
+/**
+ * @function
+ *
+ * Initializes |*deflater_ptr| for deflating name/values pairs.
+ *
+ * The |deflate_hd_table_bufsize_max| is the upper bound of header
+ * table size the deflater will use.
+ *
+ * If this function fails, |*deflater_ptr| is left untouched.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int nghttp2_hd_deflate_new(nghttp2_hd_deflater **deflater_ptr,
+ size_t deflate_hd_table_bufsize_max);
+
+/**
+ * @function
+ *
+ * Like `nghttp2_hd_deflate_new()`, but with additional custom memory
+ * allocator specified in the |mem|.
+ *
+ * The |mem| can be ``NULL`` and the call is equivalent to
+ * `nghttp2_hd_deflate_new()`.
+ *
+ * This function does not take ownership |mem|. The application is
+ * responsible for freeing |mem|.
+ *
+ * The library code does not refer to |mem| pointer after this
+ * function returns, so the application can safely free it.
+ */
+NGHTTP2_EXTERN int nghttp2_hd_deflate_new2(nghttp2_hd_deflater **deflater_ptr,
+ size_t deflate_hd_table_bufsize_max,
+ nghttp2_mem *mem);
+
+/**
+ * @function
+ *
+ * Deallocates any resources allocated for |deflater|.
+ */
+NGHTTP2_EXTERN void nghttp2_hd_deflate_del(nghttp2_hd_deflater *deflater);
+
+/**
+ * @function
+ *
+ * Changes header table size of the |deflater| to
+ * |settings_hd_table_bufsize_max| bytes. This may trigger eviction
+ * in the dynamic table.
+ *
+ * The |settings_hd_table_bufsize_max| should be the value received in
+ * SETTINGS_HEADER_TABLE_SIZE.
+ *
+ * The deflater never uses more memory than
+ * ``deflate_hd_table_bufsize_max`` bytes specified in
+ * `nghttp2_hd_deflate_new()`. Therefore, if
+ * |settings_hd_table_bufsize_max| > ``deflate_hd_table_bufsize_max``,
+ * resulting maximum table size becomes
+ * ``deflate_hd_table_bufsize_max``.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int
+nghttp2_hd_deflate_change_table_size(nghttp2_hd_deflater *deflater,
+ size_t settings_hd_table_bufsize_max);
+
+/**
+ * @function
+ *
+ * Deflates the |nva|, which has the |nvlen| name/value pairs, into
+ * the |buf| of length |buflen|.
+ *
+ * If |buf| is not large enough to store the deflated header block,
+ * this function fails with :enum:`NGHTTP2_ERR_INSUFF_BUFSIZE`. The
+ * caller should use `nghttp2_hd_deflate_bound()` to know the upper
+ * bound of buffer size required to deflate given header name/value
+ * pairs.
+ *
+ * Once this function fails, subsequent call of this function always
+ * returns :enum:`NGHTTP2_ERR_HEADER_COMP`.
+ *
+ * After this function returns, it is safe to delete the |nva|.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_HEADER_COMP`
+ * Deflation process has failed.
+ * :enum:`NGHTTP2_ERR_INSUFF_BUFSIZE`
+ * The provided |buflen| size is too small to hold the output.
+ */
+NGHTTP2_EXTERN ssize_t
+nghttp2_hd_deflate_hd(nghttp2_hd_deflater *deflater, uint8_t *buf,
+ size_t buflen, const nghttp2_nv *nva, size_t nvlen);
+
+/**
+ * @function
+ *
+ * Returns an upper bound on the compressed size after deflation of
+ * |nva| of length |nvlen|.
+ */
+NGHTTP2_EXTERN size_t nghttp2_hd_deflate_bound(nghttp2_hd_deflater *deflater,
+ const nghttp2_nv *nva,
+ size_t nvlen);
+
+/**
+ * @function
+ *
+ * Returns the number of entries that header table of |deflater|
+ * contains. This is the sum of the number of static table and
+ * dynamic table, so the return value is at least 61.
+ */
+NGHTTP2_EXTERN
+size_t nghttp2_hd_deflate_get_num_table_entries(nghttp2_hd_deflater *deflater);
+
+/**
+ * @function
+ *
+ * Returns the table entry denoted by |idx| from header table of
+ * |deflater|. The |idx| is 1-based, and idx=1 returns first entry of
+ * static table. idx=62 returns first entry of dynamic table if it
+ * exists. Specifying idx=0 is error, and this function returns NULL.
+ * If |idx| is strictly greater than the number of entries the tables
+ * contain, this function returns NULL.
+ */
+NGHTTP2_EXTERN
+const nghttp2_nv *
+nghttp2_hd_deflate_get_table_entry(nghttp2_hd_deflater *deflater, size_t idx);
+
+/**
+ * @function
+ *
+ * Returns the used dynamic table size, including the overhead 32
+ * bytes per entry described in RFC 7541.
+ */
+NGHTTP2_EXTERN
+size_t nghttp2_hd_deflate_get_dynamic_table_size(nghttp2_hd_deflater *deflater);
+
+/**
+ * @function
+ *
+ * Returns the maximum dynamic table size.
+ */
+NGHTTP2_EXTERN
+size_t
+nghttp2_hd_deflate_get_max_dynamic_table_size(nghttp2_hd_deflater *deflater);
+
+struct nghttp2_hd_inflater;
+
+/**
+ * @struct
+ *
+ * HPACK inflater object.
+ */
+typedef struct nghttp2_hd_inflater nghttp2_hd_inflater;
+
+/**
+ * @function
+ *
+ * Initializes |*inflater_ptr| for inflating name/values pairs.
+ *
+ * If this function fails, |*inflater_ptr| is left untouched.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+NGHTTP2_EXTERN int nghttp2_hd_inflate_new(nghttp2_hd_inflater **inflater_ptr);
+
+/**
+ * @function
+ *
+ * Like `nghttp2_hd_inflate_new()`, but with additional custom memory
+ * allocator specified in the |mem|.
+ *
+ * The |mem| can be ``NULL`` and the call is equivalent to
+ * `nghttp2_hd_inflate_new()`.
+ *
+ * This function does not take ownership |mem|. The application is
+ * responsible for freeing |mem|.
+ *
+ * The library code does not refer to |mem| pointer after this
+ * function returns, so the application can safely free it.
+ */
+NGHTTP2_EXTERN int nghttp2_hd_inflate_new2(nghttp2_hd_inflater **inflater_ptr,
+ nghttp2_mem *mem);
+
+/**
+ * @function
+ *
+ * Deallocates any resources allocated for |inflater|.
+ */
+NGHTTP2_EXTERN void nghttp2_hd_inflate_del(nghttp2_hd_inflater *inflater);
+
+/**
+ * @function
+ *
+ * Changes header table size in the |inflater|. This may trigger
+ * eviction in the dynamic table.
+ *
+ * The |settings_hd_table_bufsize_max| should be the value transmitted
+ * in SETTINGS_HEADER_TABLE_SIZE.
+ *
+ * This function must not be called while header block is being
+ * inflated. In other words, this function must be called after
+ * initialization of |inflater|, but before calling
+ * `nghttp2_hd_inflate_hd2()`, or after
+ * `nghttp2_hd_inflate_end_headers()`. Otherwise,
+ * `NGHTTP2_ERR_INVALID_STATE` was returned.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_INVALID_STATE`
+ * The function is called while header block is being inflated.
+ * Probably, application missed to call
+ * `nghttp2_hd_inflate_end_headers()`.
+ */
+NGHTTP2_EXTERN int
+nghttp2_hd_inflate_change_table_size(nghttp2_hd_inflater *inflater,
+ size_t settings_hd_table_bufsize_max);
+
+/**
+ * @enum
+ *
+ * The flags for header inflation.
+ */
+typedef enum {
+ /**
+ * No flag set.
+ */
+ NGHTTP2_HD_INFLATE_NONE = 0,
+ /**
+ * Indicates all headers were inflated.
+ */
+ NGHTTP2_HD_INFLATE_FINAL = 0x01,
+ /**
+ * Indicates a header was emitted.
+ */
+ NGHTTP2_HD_INFLATE_EMIT = 0x02
+} nghttp2_hd_inflate_flag;
+
+/**
+ * @function
+ *
+ * .. warning::
+ *
+ * Deprecated. Use `nghttp2_hd_inflate_hd2()` instead.
+ *
+ * Inflates name/value block stored in |in| with length |inlen|. This
+ * function performs decompression. For each successful emission of
+ * header name/value pair, :enum:`NGHTTP2_HD_INFLATE_EMIT` is set in
+ * |*inflate_flags| and name/value pair is assigned to the |nv_out|
+ * and the function returns. The caller must not free the members of
+ * |nv_out|.
+ *
+ * The |nv_out| may include pointers to the memory region in the |in|.
+ * The caller must retain the |in| while the |nv_out| is used.
+ *
+ * The application should call this function repeatedly until the
+ * ``(*inflate_flags) & NGHTTP2_HD_INFLATE_FINAL`` is nonzero and
+ * return value is non-negative. This means the all input values are
+ * processed successfully. Then the application must call
+ * `nghttp2_hd_inflate_end_headers()` to prepare for the next header
+ * block input.
+ *
+ * The caller can feed complete compressed header block. It also can
+ * feed it in several chunks. The caller must set |in_final| to
+ * nonzero if the given input is the last block of the compressed
+ * header.
+ *
+ * This function returns the number of bytes processed if it succeeds,
+ * or one of the following negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_HEADER_COMP`
+ * Inflation process has failed.
+ * :enum:`NGHTTP2_ERR_BUFFER_ERROR`
+ * The header field name or value is too large.
+ *
+ * Example follows::
+ *
+ * int inflate_header_block(nghttp2_hd_inflater *hd_inflater,
+ * uint8_t *in, size_t inlen, int final)
+ * {
+ * ssize_t rv;
+ *
+ * for(;;) {
+ * nghttp2_nv nv;
+ * int inflate_flags = 0;
+ *
+ * rv = nghttp2_hd_inflate_hd(hd_inflater, &nv, &inflate_flags,
+ * in, inlen, final);
+ *
+ * if(rv < 0) {
+ * fprintf(stderr, "inflate failed with error code %zd", rv);
+ * return -1;
+ * }
+ *
+ * in += rv;
+ * inlen -= rv;
+ *
+ * if(inflate_flags & NGHTTP2_HD_INFLATE_EMIT) {
+ * fwrite(nv.name, nv.namelen, 1, stderr);
+ * fprintf(stderr, ": ");
+ * fwrite(nv.value, nv.valuelen, 1, stderr);
+ * fprintf(stderr, "\n");
+ * }
+ * if(inflate_flags & NGHTTP2_HD_INFLATE_FINAL) {
+ * nghttp2_hd_inflate_end_headers(hd_inflater);
+ * break;
+ * }
+ * if((inflate_flags & NGHTTP2_HD_INFLATE_EMIT) == 0 &&
+ * inlen == 0) {
+ * break;
+ * }
+ * }
+ *
+ * return 0;
+ * }
+ *
+ */
+NGHTTP2_EXTERN ssize_t nghttp2_hd_inflate_hd(nghttp2_hd_inflater *inflater,
+ nghttp2_nv *nv_out,
+ int *inflate_flags, uint8_t *in,
+ size_t inlen, int in_final);
+
+/**
+ * @function
+ *
+ * Inflates name/value block stored in |in| with length |inlen|. This
+ * function performs decompression. For each successful emission of
+ * header name/value pair, :enum:`NGHTTP2_HD_INFLATE_EMIT` is set in
+ * |*inflate_flags| and name/value pair is assigned to the |nv_out|
+ * and the function returns. The caller must not free the members of
+ * |nv_out|.
+ *
+ * The |nv_out| may include pointers to the memory region in the |in|.
+ * The caller must retain the |in| while the |nv_out| is used.
+ *
+ * The application should call this function repeatedly until the
+ * ``(*inflate_flags) & NGHTTP2_HD_INFLATE_FINAL`` is nonzero and
+ * return value is non-negative. This means the all input values are
+ * processed successfully. Then the application must call
+ * `nghttp2_hd_inflate_end_headers()` to prepare for the next header
+ * block input.
+ *
+ * The caller can feed complete compressed header block. It also can
+ * feed it in several chunks. The caller must set |in_final| to
+ * nonzero if the given input is the last block of the compressed
+ * header.
+ *
+ * This function returns the number of bytes processed if it succeeds,
+ * or one of the following negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ * :enum:`NGHTTP2_ERR_HEADER_COMP`
+ * Inflation process has failed.
+ * :enum:`NGHTTP2_ERR_BUFFER_ERROR`
+ * The header field name or value is too large.
+ *
+ * Example follows::
+ *
+ * int inflate_header_block(nghttp2_hd_inflater *hd_inflater,
+ * uint8_t *in, size_t inlen, int final)
+ * {
+ * ssize_t rv;
+ *
+ * for(;;) {
+ * nghttp2_nv nv;
+ * int inflate_flags = 0;
+ *
+ * rv = nghttp2_hd_inflate_hd2(hd_inflater, &nv, &inflate_flags,
+ * in, inlen, final);
+ *
+ * if(rv < 0) {
+ * fprintf(stderr, "inflate failed with error code %zd", rv);
+ * return -1;
+ * }
+ *
+ * in += rv;
+ * inlen -= rv;
+ *
+ * if(inflate_flags & NGHTTP2_HD_INFLATE_EMIT) {
+ * fwrite(nv.name, nv.namelen, 1, stderr);
+ * fprintf(stderr, ": ");
+ * fwrite(nv.value, nv.valuelen, 1, stderr);
+ * fprintf(stderr, "\n");
+ * }
+ * if(inflate_flags & NGHTTP2_HD_INFLATE_FINAL) {
+ * nghttp2_hd_inflate_end_headers(hd_inflater);
+ * break;
+ * }
+ * if((inflate_flags & NGHTTP2_HD_INFLATE_EMIT) == 0 &&
+ * inlen == 0) {
+ * break;
+ * }
+ * }
+ *
+ * return 0;
+ * }
+ *
+ */
+NGHTTP2_EXTERN ssize_t
+nghttp2_hd_inflate_hd2(nghttp2_hd_inflater *inflater, nghttp2_nv *nv_out,
+ int *inflate_flags, const uint8_t *in, size_t inlen,
+ int in_final);
+
+/**
+ * @function
+ *
+ * Signals the end of decompression for one header block.
+ *
+ * This function returns 0 if it succeeds. Currently this function
+ * always succeeds.
+ */
+NGHTTP2_EXTERN int
+nghttp2_hd_inflate_end_headers(nghttp2_hd_inflater *inflater);
+
+/**
+ * @function
+ *
+ * Returns the number of entries that header table of |inflater|
+ * contains. This is the sum of the number of static table and
+ * dynamic table, so the return value is at least 61.
+ */
+NGHTTP2_EXTERN
+size_t nghttp2_hd_inflate_get_num_table_entries(nghttp2_hd_inflater *inflater);
+
+/**
+ * @function
+ *
+ * Returns the table entry denoted by |idx| from header table of
+ * |inflater|. The |idx| is 1-based, and idx=1 returns first entry of
+ * static table. idx=62 returns first entry of dynamic table if it
+ * exists. Specifying idx=0 is error, and this function returns NULL.
+ * If |idx| is strictly greater than the number of entries the tables
+ * contain, this function returns NULL.
+ */
+NGHTTP2_EXTERN
+const nghttp2_nv *
+nghttp2_hd_inflate_get_table_entry(nghttp2_hd_inflater *inflater, size_t idx);
+
+/**
+ * @function
+ *
+ * Returns the used dynamic table size, including the overhead 32
+ * bytes per entry described in RFC 7541.
+ */
+NGHTTP2_EXTERN
+size_t nghttp2_hd_inflate_get_dynamic_table_size(nghttp2_hd_inflater *inflater);
+
+/**
+ * @function
+ *
+ * Returns the maximum dynamic table size.
+ */
+NGHTTP2_EXTERN
+size_t
+nghttp2_hd_inflate_get_max_dynamic_table_size(nghttp2_hd_inflater *inflater);
+
+struct nghttp2_stream;
+
+/**
+ * @struct
+ *
+ * The structure to represent HTTP/2 stream. The details of this
+ * structure are intentionally hidden from the public API.
+ */
+typedef struct nghttp2_stream nghttp2_stream;
+
+/**
+ * @function
+ *
+ * Returns pointer to :type:`nghttp2_stream` object denoted by
+ * |stream_id|. If stream was not found, returns NULL.
+ *
+ * Returns imaginary root stream (see
+ * `nghttp2_session_get_root_stream()`) if 0 is given in |stream_id|.
+ *
+ * Unless |stream_id| == 0, the returned pointer is valid until next
+ * call of `nghttp2_session_send()`, `nghttp2_session_mem_send()`,
+ * `nghttp2_session_recv()`, and `nghttp2_session_mem_recv()`.
+ */
+NGHTTP2_EXTERN nghttp2_stream *
+nghttp2_session_find_stream(nghttp2_session *session, int32_t stream_id);
+
+/**
+ * @enum
+ *
+ * State of stream as described in RFC 7540.
+ */
+typedef enum {
+ /**
+ * idle state.
+ */
+ NGHTTP2_STREAM_STATE_IDLE = 1,
+ /**
+ * open state.
+ */
+ NGHTTP2_STREAM_STATE_OPEN,
+ /**
+ * reserved (local) state.
+ */
+ NGHTTP2_STREAM_STATE_RESERVED_LOCAL,
+ /**
+ * reserved (remote) state.
+ */
+ NGHTTP2_STREAM_STATE_RESERVED_REMOTE,
+ /**
+ * half closed (local) state.
+ */
+ NGHTTP2_STREAM_STATE_HALF_CLOSED_LOCAL,
+ /**
+ * half closed (remote) state.
+ */
+ NGHTTP2_STREAM_STATE_HALF_CLOSED_REMOTE,
+ /**
+ * closed state.
+ */
+ NGHTTP2_STREAM_STATE_CLOSED
+} nghttp2_stream_proto_state;
+
+/**
+ * @function
+ *
+ * Returns state of |stream|. The root stream retrieved by
+ * `nghttp2_session_get_root_stream()` will have stream state
+ * :enum:`NGHTTP2_STREAM_STATE_IDLE`.
+ */
+NGHTTP2_EXTERN nghttp2_stream_proto_state
+nghttp2_stream_get_state(nghttp2_stream *stream);
+
+/**
+ * @function
+ *
+ * Returns root of dependency tree, which is imaginary stream with
+ * stream ID 0. The returned pointer is valid until |session| is
+ * freed by `nghttp2_session_del()`.
+ */
+NGHTTP2_EXTERN nghttp2_stream *
+nghttp2_session_get_root_stream(nghttp2_session *session);
+
+/**
+ * @function
+ *
+ * Returns the parent stream of |stream| in dependency tree. Returns
+ * NULL if there is no such stream.
+ */
+NGHTTP2_EXTERN nghttp2_stream *
+nghttp2_stream_get_parent(nghttp2_stream *stream);
+
+NGHTTP2_EXTERN int32_t nghttp2_stream_get_stream_id(nghttp2_stream *stream);
+
+/**
+ * @function
+ *
+ * Returns the next sibling stream of |stream| in dependency tree.
+ * Returns NULL if there is no such stream.
+ */
+NGHTTP2_EXTERN nghttp2_stream *
+nghttp2_stream_get_next_sibling(nghttp2_stream *stream);
+
+/**
+ * @function
+ *
+ * Returns the previous sibling stream of |stream| in dependency tree.
+ * Returns NULL if there is no such stream.
+ */
+NGHTTP2_EXTERN nghttp2_stream *
+nghttp2_stream_get_previous_sibling(nghttp2_stream *stream);
+
+/**
+ * @function
+ *
+ * Returns the first child stream of |stream| in dependency tree.
+ * Returns NULL if there is no such stream.
+ */
+NGHTTP2_EXTERN nghttp2_stream *
+nghttp2_stream_get_first_child(nghttp2_stream *stream);
+
+/**
+ * @function
+ *
+ * Returns dependency weight to the parent stream of |stream|.
+ */
+NGHTTP2_EXTERN int32_t nghttp2_stream_get_weight(nghttp2_stream *stream);
+
+/**
+ * @function
+ *
+ * Returns the sum of the weight for |stream|'s children.
+ */
+NGHTTP2_EXTERN int32_t
+nghttp2_stream_get_sum_dependency_weight(nghttp2_stream *stream);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NGHTTP2_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012, 2013 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2VER_H
+#define NGHTTP2VER_H
+
+/**
+ * @macro
+ * Version number of the nghttp2 library release
+ */
+#define NGHTTP2_VERSION "@PACKAGE_VERSION@"
+
+/**
+ * @macro
+ * Numerical representation of the version number of the nghttp2 library
+ * release. This is a 24 bit number with 8 bits for major number, 8 bits
+ * for minor and 8 bits for patch. Version 1.2.3 becomes 0x010203.
+ */
+#define NGHTTP2_VERSION_NUM 0x010203
+
+#endif /* NGHTTP2VER_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2014 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_BUF_H
+#define NGHTTP2_BUF_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+
+#include "nghttp2_int.h"
+#include "nghttp2_mem.h"
+
+typedef struct {
+ /* This points to the beginning of the buffer. The effective range
+ of buffer is [begin, end). */
+ uint8_t *begin;
+ /* This points to the memory one byte beyond the end of the
+ buffer. */
+ uint8_t *end;
+ /* The position indicator for effective start of the buffer. pos <=
+ last must be hold. */
+ uint8_t *pos;
+ /* The position indicator for effective one beyond of the end of the
+ buffer. last <= end must be hold. */
+ uint8_t *last;
+ /* Mark arbitrary position in buffer [begin, end) */
+ uint8_t *mark;
+} nghttp2_buf;
+
+#define nghttp2_buf_len(BUF) ((size_t)((BUF)->last - (BUF)->pos))
+#define nghttp2_buf_avail(BUF) ((size_t)((BUF)->end - (BUF)->last))
+#define nghttp2_buf_mark_avail(BUF) ((size_t)((BUF)->mark - (BUF)->last))
+#define nghttp2_buf_cap(BUF) ((size_t)((BUF)->end - (BUF)->begin))
+
+#define nghttp2_buf_pos_offset(BUF) ((size_t)((BUF)->pos - (BUF)->begin))
+#define nghttp2_buf_last_offset(BUF) ((size_t)((BUF)->last - (BUF)->begin))
+
+#define nghttp2_buf_shift_right(BUF, AMT) \
+ do { \
+ (BUF)->pos += AMT; \
+ (BUF)->last += AMT; \
+ } while (0)
+
+#define nghttp2_buf_shift_left(BUF, AMT) \
+ do { \
+ (BUF)->pos -= AMT; \
+ (BUF)->last -= AMT; \
+ } while (0)
+
+/*
+ * Initializes the |buf|. No memory is allocated in this function. Use
+ * nghttp2_buf_reserve() to allocate memory.
+ */
+void nghttp2_buf_init(nghttp2_buf *buf);
+
+/*
+ * Initializes the |buf| and allocates at least |initial| bytes of
+ * memory.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_buf_init2(nghttp2_buf *buf, size_t initial, nghttp2_mem *mem);
+
+/*
+ * Frees buffer in |buf|.
+ */
+void nghttp2_buf_free(nghttp2_buf *buf, nghttp2_mem *mem);
+
+/*
+ * Extends buffer so that nghttp2_buf_cap() returns at least
+ * |new_cap|. If extensions took place, buffer pointers in |buf| will
+ * change.
+ *
+ * This function returns 0 if it succeeds, or one of the followings
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_buf_reserve(nghttp2_buf *buf, size_t new_cap, nghttp2_mem *mem);
+
+/*
+ * Resets pos, last, mark member of |buf| to buf->begin.
+ */
+void nghttp2_buf_reset(nghttp2_buf *buf);
+
+/*
+ * Initializes |buf| using supplied buffer |begin| of length
+ * |len|. Semantically, the application should not call *_reserve() or
+ * nghttp2_free() functions for |buf|.
+ */
+void nghttp2_buf_wrap_init(nghttp2_buf *buf, uint8_t *begin, size_t len);
+
+struct nghttp2_buf_chain;
+
+typedef struct nghttp2_buf_chain nghttp2_buf_chain;
+
+/* Chains 2 buffers */
+struct nghttp2_buf_chain {
+ /* Points to the subsequent buffer. NULL if there is no such
+ buffer. */
+ nghttp2_buf_chain *next;
+ nghttp2_buf buf;
+};
+
+typedef struct {
+ /* Points to the first buffer */
+ nghttp2_buf_chain *head;
+ /* Buffer pointer where write occurs. */
+ nghttp2_buf_chain *cur;
+ /* Memory allocator */
+ nghttp2_mem *mem;
+ /* The buffer capacity of each buf */
+ size_t chunk_length;
+ /* The maximum number of nghttp2_buf_chain */
+ size_t max_chunk;
+ /* The number of nghttp2_buf_chain allocated */
+ size_t chunk_used;
+ /* The number of nghttp2_buf_chain to keep on reset */
+ size_t chunk_keep;
+ /* pos offset from begin in each buffers. On initialization and
+ reset, buf->pos and buf->last are positioned at buf->begin +
+ offset. */
+ size_t offset;
+} nghttp2_bufs;
+
+/*
+ * This is the same as calling nghttp2_bufs_init2 with the given
+ * arguments and offset = 0.
+ */
+int nghttp2_bufs_init(nghttp2_bufs *bufs, size_t chunk_length, size_t max_chunk,
+ nghttp2_mem *mem);
+
+/*
+ * This is the same as calling nghttp2_bufs_init3 with the given
+ * arguments and chunk_keep = max_chunk.
+ */
+int nghttp2_bufs_init2(nghttp2_bufs *bufs, size_t chunk_length,
+ size_t max_chunk, size_t offset, nghttp2_mem *mem);
+
+/*
+ * Initializes |bufs|. Each buffer size is given in the
+ * |chunk_length|. The maximum number of buffers is given in the
+ * |max_chunk|. On reset, first |chunk_keep| buffers are kept and
+ * remaining buffers are deleted. Each buffer will have bufs->pos and
+ * bufs->last shifted to left by |offset| bytes on creation and reset.
+ *
+ * This function allocates first buffer. bufs->head and bufs->cur
+ * will point to the first buffer after this call.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_INVALID_ARGUMENT
+ * chunk_keep is 0; or max_chunk < chunk_keep; or offset is too
+ * long.
+ */
+int nghttp2_bufs_init3(nghttp2_bufs *bufs, size_t chunk_length,
+ size_t max_chunk, size_t chunk_keep, size_t offset,
+ nghttp2_mem *mem);
+
+/*
+ * Frees any related resources to the |bufs|.
+ */
+void nghttp2_bufs_free(nghttp2_bufs *bufs);
+
+/*
+ * Initializes |bufs| using supplied buffer |begin| of length |len|.
+ * The first buffer bufs->head uses buffer |begin|. The buffer size
+ * is fixed and no allocate extra chunk buffer is allocated. In other
+ * words, max_chunk = chunk_keep = 1. To free the resource allocated
+ * for |bufs|, use nghttp2_bufs_wrap_free().
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+int nghttp2_bufs_wrap_init(nghttp2_bufs *bufs, uint8_t *begin, size_t len,
+ nghttp2_mem *mem);
+
+/*
+ * Frees any related resource to the |bufs|. This function does not
+ * free supplied buffer provided in nghttp2_bufs_wrap_init().
+ */
+void nghttp2_bufs_wrap_free(nghttp2_bufs *bufs);
+
+/*
+ * Reallocates internal buffer using |chunk_length|. The max_chunk,
+ * chunk_keep and offset do not change. After successful allocation
+ * of new buffer, previous buffers are deallocated without copying
+ * anything into new buffers. chunk_used is reset to 1.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_INVALID_ARGUMENT
+ * chunk_length < offset
+ */
+int nghttp2_bufs_realloc(nghttp2_bufs *bufs, size_t chunk_length);
+
+/*
+ * Appends the |data| of length |len| to the |bufs|. The write starts
+ * at bufs->cur->buf.last. A new buffers will be allocated to store
+ * all data.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_BUFFER_ERROR
+ * Out of buffer space.
+ */
+int nghttp2_bufs_add(nghttp2_bufs *bufs, const void *data, size_t len);
+
+/*
+ * Appends a single byte |b| to the |bufs|. The write starts at
+ * bufs->cur->buf.last. A new buffers will be allocated to store all
+ * data.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_BUFFER_ERROR
+ * Out of buffer space.
+ */
+int nghttp2_bufs_addb(nghttp2_bufs *bufs, uint8_t b);
+
+/*
+ * Behaves like nghttp2_bufs_addb(), but this does not update
+ * buf->last pointer.
+ */
+int nghttp2_bufs_addb_hold(nghttp2_bufs *bufs, uint8_t b);
+
+#define nghttp2_bufs_fast_addb(BUFS, B) \
+ do { \
+ *(BUFS)->cur->buf.last++ = B; \
+ } while (0)
+
+#define nghttp2_bufs_fast_addb_hold(BUFS, B) \
+ do { \
+ *(BUFS)->cur->buf.last = B; \
+ } while (0)
+
+/*
+ * Performs bitwise-OR of |b| at bufs->cur->buf.last. A new buffers
+ * will be allocated if necessary.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_BUFFER_ERROR
+ * Out of buffer space.
+ */
+int nghttp2_bufs_orb(nghttp2_bufs *bufs, uint8_t b);
+
+/*
+ * Behaves like nghttp2_bufs_orb(), but does not update buf->last
+ * pointer.
+ */
+int nghttp2_bufs_orb_hold(nghttp2_bufs *bufs, uint8_t b);
+
+#define nghttp2_bufs_fast_orb(BUFS, B) \
+ do { \
+ uint8_t **p = &(BUFS)->cur->buf.last; \
+ **p = (uint8_t)(**p | (B)); \
+ ++(*p); \
+ } while (0)
+
+#define nghttp2_bufs_fast_orb_hold(BUFS, B) \
+ do { \
+ uint8_t *p = (BUFS)->cur->buf.last; \
+ *p = (uint8_t)(*p | (B)); \
+ } while (0)
+
+/*
+ * Copies all data stored in |bufs| to the contiguous buffer. This
+ * function allocates the contiguous memory to store all data in
+ * |bufs| and assigns it to |*out|.
+ *
+ * The contents of |bufs| is left unchanged.
+ *
+ * This function returns the length of copied data and assigns the
+ * pointer to copied data to |*out| if it succeeds, or one of the
+ * following negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+ssize_t nghttp2_bufs_remove(nghttp2_bufs *bufs, uint8_t **out);
+
+/*
+ * Copies all data stored in |bufs| to |out|. This function assumes
+ * that the buffer space pointed by |out| has at least
+ * nghttp2_bufs(bufs) bytes.
+ *
+ * The contents of |bufs| is left unchanged.
+ *
+ * This function returns the length of copied data.
+ */
+size_t nghttp2_bufs_remove_copy(nghttp2_bufs *bufs, uint8_t *out);
+
+/*
+ * Resets |bufs| and makes the buffers empty.
+ */
+void nghttp2_bufs_reset(nghttp2_bufs *bufs);
+
+/*
+ * Moves bufs->cur to bufs->cur->next. If resulting bufs->cur is
+ * NULL, this function allocates new buffers and bufs->cur points to
+ * it.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ * NGHTTP2_ERR_BUFFER_ERROR
+ * Out of buffer space.
+ */
+int nghttp2_bufs_advance(nghttp2_bufs *bufs);
+
+/* Sets bufs->cur to bufs->head */
+#define nghttp2_bufs_rewind(BUFS) \
+ do { \
+ (BUFS)->cur = (BUFS)->head; \
+ } while (0)
+
+/*
+ * Move bufs->cur, from the current position, using next member, to
+ * the last buf which has nghttp2_buf_len(buf) > 0 without seeing buf
+ * which satisfies nghttp2_buf_len(buf) == 0. If
+ * nghttp2_buf_len(&bufs->cur->buf) == 0 or bufs->cur->next is NULL,
+ * bufs->cur is unchanged.
+ */
+void nghttp2_bufs_seek_last_present(nghttp2_bufs *bufs);
+
+/*
+ * Returns nonzero if bufs->cur->next is not emtpy.
+ */
+int nghttp2_bufs_next_present(nghttp2_bufs *bufs);
+
+#define nghttp2_bufs_cur_avail(BUFS) nghttp2_buf_avail(&(BUFS)->cur->buf)
+
+/*
+ * Returns the buffer length of |bufs|.
+ */
+size_t nghttp2_bufs_len(nghttp2_bufs *bufs);
+
+#endif /* NGHTTP2_BUF_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2014 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_CALLBACKS_H
+#define NGHTTP2_CALLBACKS_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+
+/*
+ * Callback functions.
+ */
+struct nghttp2_session_callbacks {
+ /**
+ * Callback function invoked when the session wants to send data to
+ * the remote peer. This callback is not necessary if the
+ * application uses solely `nghttp2_session_mem_send()` to serialize
+ * data to transmit.
+ */
+ nghttp2_send_callback send_callback;
+ /**
+ * Callback function invoked when the session wants to receive data
+ * from the remote peer. This callback is not necessary if the
+ * application uses solely `nghttp2_session_mem_recv()` to process
+ * received data.
+ */
+ nghttp2_recv_callback recv_callback;
+ /**
+ * Callback function invoked by `nghttp2_session_recv()` when a
+ * frame is received.
+ */
+ nghttp2_on_frame_recv_callback on_frame_recv_callback;
+ /**
+ * Callback function invoked by `nghttp2_session_recv()` when an
+ * invalid non-DATA frame is received.
+ */
+ nghttp2_on_invalid_frame_recv_callback on_invalid_frame_recv_callback;
+ /**
+ * Callback function invoked when a chunk of data in DATA frame is
+ * received.
+ */
+ nghttp2_on_data_chunk_recv_callback on_data_chunk_recv_callback;
+ /**
+ * Callback function invoked before a non-DATA frame is sent.
+ */
+ nghttp2_before_frame_send_callback before_frame_send_callback;
+ /**
+ * Callback function invoked after a frame is sent.
+ */
+ nghttp2_on_frame_send_callback on_frame_send_callback;
+ /**
+ * The callback function invoked when a non-DATA frame is not sent
+ * because of an error.
+ */
+ nghttp2_on_frame_not_send_callback on_frame_not_send_callback;
+ /**
+ * Callback function invoked when the stream is closed.
+ */
+ nghttp2_on_stream_close_callback on_stream_close_callback;
+ /**
+ * Callback function invoked when the reception of header block in
+ * HEADERS or PUSH_PROMISE is started.
+ */
+ nghttp2_on_begin_headers_callback on_begin_headers_callback;
+ /**
+ * Callback function invoked when a header name/value pair is
+ * received.
+ */
+ nghttp2_on_header_callback on_header_callback;
+ nghttp2_on_header_callback2 on_header_callback2;
+ /**
+ * Callback function invoked when the library asks application how
+ * many padding bytes are required for the transmission of the given
+ * frame.
+ */
+ nghttp2_select_padding_callback select_padding_callback;
+ /**
+ * The callback function used to determine the length allowed in
+ * `nghttp2_data_source_read_callback()`
+ */
+ nghttp2_data_source_read_length_callback read_length_callback;
+ /**
+ * Sets callback function invoked when a frame header is received.
+ */
+ nghttp2_on_begin_frame_callback on_begin_frame_callback;
+ nghttp2_send_data_callback send_data_callback;
+ nghttp2_pack_extension_callback pack_extension_callback;
+ nghttp2_unpack_extension_callback unpack_extension_callback;
+ nghttp2_on_extension_chunk_recv_callback on_extension_chunk_recv_callback;
+ nghttp2_error_callback error_callback;
+};
+
+#endif /* NGHTTP2_CALLBACKS_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_FRAME_H
+#define NGHTTP2_FRAME_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+#include "nghttp2_hd.h"
+#include "nghttp2_buf.h"
+
+#define NGHTTP2_STREAM_ID_MASK ((1u << 31) - 1)
+#define NGHTTP2_PRI_GROUP_ID_MASK ((1u << 31) - 1)
+#define NGHTTP2_PRIORITY_MASK ((1u << 31) - 1)
+#define NGHTTP2_WINDOW_SIZE_INCREMENT_MASK ((1u << 31) - 1)
+#define NGHTTP2_SETTINGS_ID_MASK ((1 << 24) - 1)
+
+/* The number of bytes of frame header. */
+#define NGHTTP2_FRAME_HDLEN 9
+
+#define NGHTTP2_MAX_FRAME_SIZE_MAX ((1 << 24) - 1)
+#define NGHTTP2_MAX_FRAME_SIZE_MIN (1 << 14)
+
+#define NGHTTP2_MAX_PAYLOADLEN 8192//16384--LiuHan/0812
+/* The one frame buffer length for tranmission. We may use several of
+ them to support CONTINUATION. To account for Pad Length field, we
+ allocate extra 1 byte, which saves extra large memcopying. */
+#define NGHTTP2_FRAMEBUF_CHUNKLEN \
+ (NGHTTP2_FRAME_HDLEN + 1 + NGHTTP2_MAX_PAYLOADLEN)
+
+/* The default length of DATA frame payload. */
+#define NGHTTP2_DATA_PAYLOADLEN NGHTTP2_MAX_FRAME_SIZE_MIN
+
+/* Maximum headers block size to send, calculated using
+ nghttp2_hd_deflate_bound(). This is the default value, and can be
+ overridden by nghttp2_option_set_max_send_header_block_size(). */
+#define NGHTTP2_MAX_HEADERSLEN 65536
+
+/* The number of bytes for each SETTINGS entry */
+#define NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH 6
+
+/* Length of priority related fields in HEADERS/PRIORITY frames */
+#define NGHTTP2_PRIORITY_SPECLEN 5
+
+/* Maximum length of padding in bytes. */
+#define NGHTTP2_MAX_PADLEN 256
+
+/* Union of extension frame payload */
+typedef union { nghttp2_ext_altsvc altsvc; } nghttp2_ext_frame_payload;
+
+void nghttp2_frame_pack_frame_hd(uint8_t *buf, const nghttp2_frame_hd *hd);
+
+void nghttp2_frame_unpack_frame_hd(nghttp2_frame_hd *hd, const uint8_t *buf);
+
+/**
+ * Initializes frame header |hd| with given parameters. Reserved bit
+ * is set to 0.
+ */
+void nghttp2_frame_hd_init(nghttp2_frame_hd *hd, size_t length, uint8_t type,
+ uint8_t flags, int32_t stream_id);
+
+/**
+ * Returns the number of priority field depending on the |flags|. If
+ * |flags| has neither NGHTTP2_FLAG_PRIORITY_GROUP nor
+ * NGHTTP2_FLAG_PRIORITY_DEPENDENCY set, return 0.
+ */
+size_t nghttp2_frame_priority_len(uint8_t flags);
+
+/**
+ * Packs the |pri_spec| in |buf|. This function assumes |buf| has
+ * enough space for serialization.
+ */
+void nghttp2_frame_pack_priority_spec(uint8_t *buf,
+ const nghttp2_priority_spec *pri_spec);
+
+/**
+ * Unpacks the priority specification from payload |payload| of length
+ * |payloadlen| to |pri_spec|. The |flags| is used to determine what
+ * kind of priority specification is in |payload|. This function
+ * assumes the |payload| contains whole priority specification.
+ */
+void nghttp2_frame_unpack_priority_spec(nghttp2_priority_spec *pri_spec,
+ uint8_t flags, const uint8_t *payload,
+ size_t payloadlen);
+
+/*
+ * Returns the offset from the HEADERS frame payload where the
+ * compressed header block starts. The frame payload does not include
+ * frame header.
+ */
+size_t nghttp2_frame_headers_payload_nv_offset(nghttp2_headers *frame);
+
+/*
+ * Packs HEADERS frame |frame| in wire format and store it in |bufs|.
+ * This function expands |bufs| as necessary to store frame.
+ *
+ * The caller must make sure that nghttp2_bufs_reset(bufs) is called
+ * before calling this function.
+ *
+ * frame->hd.length is assigned after length is determined during
+ * packing process. CONTINUATION frames are also serialized in this
+ * function. This function does not handle padding.
+ *
+ * This function returns 0 if it succeeds, or returns one of the
+ * following negative error codes:
+ *
+ * NGHTTP2_ERR_HEADER_COMP
+ * The deflate operation failed.
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+int nghttp2_frame_pack_headers(nghttp2_bufs *bufs, nghttp2_headers *frame,
+ nghttp2_hd_deflater *deflater);
+
+/*
+ * Unpacks HEADERS frame byte sequence into |frame|. This function
+ * only unapcks bytes that come before name/value header block and
+ * after possible Pad Length field.
+ *
+ * This function always succeeds and returns 0.
+ */
+int nghttp2_frame_unpack_headers_payload(nghttp2_headers *frame,
+ const uint8_t *payload,
+ size_t payloadlen);
+
+/*
+ * Packs PRIORITY frame |frame| in wire format and store it in
+ * |bufs|.
+ *
+ * The caller must make sure that nghttp2_bufs_reset(bufs) is called
+ * before calling this function.
+ *
+ * This function always succeeds and returns 0.
+ */
+int nghttp2_frame_pack_priority(nghttp2_bufs *bufs, nghttp2_priority *frame);
+
+/*
+ * Unpacks PRIORITY wire format into |frame|.
+ */
+void nghttp2_frame_unpack_priority_payload(nghttp2_priority *frame,
+ const uint8_t *payload,
+ size_t payloadlen);
+
+/*
+ * Packs RST_STREAM frame |frame| in wire frame format and store it in
+ * |bufs|.
+ *
+ * The caller must make sure that nghttp2_bufs_reset(bufs) is called
+ * before calling this function.
+ *
+ * This function always succeeds and returns 0.
+ */
+int nghttp2_frame_pack_rst_stream(nghttp2_bufs *bufs,
+ nghttp2_rst_stream *frame);
+
+/*
+ * Unpacks RST_STREAM frame byte sequence into |frame|.
+ */
+void nghttp2_frame_unpack_rst_stream_payload(nghttp2_rst_stream *frame,
+ const uint8_t *payload,
+ size_t payloadlen);
+
+/*
+ * Packs SETTINGS frame |frame| in wire format and store it in
+ * |bufs|.
+ *
+ * The caller must make sure that nghttp2_bufs_reset(bufs) is called
+ * before calling this function.
+ *
+ * This function returns 0 if it succeeds, or returns one of the
+ * following negative error codes:
+ *
+ * NGHTTP2_ERR_FRAME_SIZE_ERROR
+ * The length of the frame is too large.
+ */
+int nghttp2_frame_pack_settings(nghttp2_bufs *bufs, nghttp2_settings *frame);
+
+/*
+ * Packs the |iv|, which includes |niv| entries, in the |buf|,
+ * assuming the |buf| has at least 8 * |niv| bytes.
+ *
+ * Returns the number of bytes written into the |buf|.
+ */
+size_t nghttp2_frame_pack_settings_payload(uint8_t *buf,
+ const nghttp2_settings_entry *iv,
+ size_t niv);
+
+void nghttp2_frame_unpack_settings_entry(nghttp2_settings_entry *iv,
+ const uint8_t *payload);
+
+/*
+ * Initializes payload of frame->settings. The |frame| takes
+ * ownership of |iv|.
+ */
+void nghttp2_frame_unpack_settings_payload(nghttp2_settings *frame,
+ nghttp2_settings_entry *iv,
+ size_t niv);
+
+/*
+ * Unpacks SETTINGS payload into |*iv_ptr|. The number of entries are
+ * assigned to the |*niv_ptr|. This function allocates enough memory
+ * to store the result in |*iv_ptr|. The caller is responsible to free
+ * |*iv_ptr| after its use.
+ *
+ * This function returns 0 if it succeeds or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+int nghttp2_frame_unpack_settings_payload2(nghttp2_settings_entry **iv_ptr,
+ size_t *niv_ptr,
+ const uint8_t *payload,
+ size_t payloadlen, nghttp2_mem *mem);
+
+/*
+ * Packs PUSH_PROMISE frame |frame| in wire format and store it in
+ * |bufs|. This function expands |bufs| as necessary to store
+ * frame.
+ *
+ * The caller must make sure that nghttp2_bufs_reset(bufs) is called
+ * before calling this function.
+ *
+ * frame->hd.length is assigned after length is determined during
+ * packing process. CONTINUATION frames are also serialized in this
+ * function. This function does not handle padding.
+ *
+ * This function returns 0 if it succeeds, or returns one of the
+ * following negative error codes:
+ *
+ * NGHTTP2_ERR_HEADER_COMP
+ * The deflate operation failed.
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+int nghttp2_frame_pack_push_promise(nghttp2_bufs *bufs,
+ nghttp2_push_promise *frame,
+ nghttp2_hd_deflater *deflater);
+
+/*
+ * Unpacks PUSH_PROMISE frame byte sequence into |frame|. This
+ * function only unapcks bytes that come before name/value header
+ * block and after possible Pad Length field.
+ *
+ * This function returns 0 if it succeeds or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_PROTO
+ * TODO END_HEADERS flag is not set
+ */
+int nghttp2_frame_unpack_push_promise_payload(nghttp2_push_promise *frame,
+ const uint8_t *payload,
+ size_t payloadlen);
+
+/*
+ * Packs PING frame |frame| in wire format and store it in
+ * |bufs|.
+ *
+ * The caller must make sure that nghttp2_bufs_reset(bufs) is called
+ * before calling this function.
+ *
+ * This function always succeeds and returns 0.
+ */
+int nghttp2_frame_pack_ping(nghttp2_bufs *bufs, nghttp2_ping *frame);
+
+/*
+ * Unpacks PING wire format into |frame|.
+ */
+void nghttp2_frame_unpack_ping_payload(nghttp2_ping *frame,
+ const uint8_t *payload,
+ size_t payloadlen);
+
+/*
+ * Packs GOAWAY frame |frame| in wire format and store it in |bufs|.
+ * This function expands |bufs| as necessary to store frame.
+ *
+ * The caller must make sure that nghttp2_bufs_reset(bufs) is called
+ * before calling this function.
+ *
+ * This function returns 0 if it succeeds or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_FRAME_SIZE_ERROR
+ * The length of the frame is too large.
+ */
+int nghttp2_frame_pack_goaway(nghttp2_bufs *bufs, nghttp2_goaway *frame);
+
+/*
+ * Unpacks GOAWAY wire format into |frame|. The |payload| of length
+ * |payloadlen| contains first 8 bytes of payload. The
+ * |var_gift_payload| of length |var_gift_payloadlen| contains
+ * remaining payload and its buffer is gifted to the function and then
+ * |frame|. The |var_gift_payloadlen| must be freed by
+ * nghttp2_frame_goaway_free().
+ */
+void nghttp2_frame_unpack_goaway_payload(nghttp2_goaway *frame,
+ const uint8_t *payload,
+ size_t payloadlen,
+ uint8_t *var_gift_payload,
+ size_t var_gift_payloadlen);
+
+/*
+ * Unpacks GOAWAY wire format into |frame|. This function only exists
+ * for unit test. After allocating buffer for debug data, this
+ * function internally calls nghttp2_frame_unpack_goaway_payload().
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+int nghttp2_frame_unpack_goaway_payload2(nghttp2_goaway *frame,
+ const uint8_t *payload,
+ size_t payloadlen, nghttp2_mem *mem);
+
+/*
+ * Packs WINDOW_UPDATE frame |frame| in wire frame format and store it
+ * in |bufs|.
+ *
+ * The caller must make sure that nghttp2_bufs_reset(bufs) is called
+ * before calling this function.
+ *
+ * This function always succeeds and returns 0.
+ */
+int nghttp2_frame_pack_window_update(nghttp2_bufs *bufs,
+ nghttp2_window_update *frame);
+
+/*
+ * Unpacks WINDOW_UPDATE frame byte sequence into |frame|.
+ */
+void nghttp2_frame_unpack_window_update_payload(nghttp2_window_update *frame,
+ const uint8_t *payload,
+ size_t payloadlen);
+
+/*
+ * Packs ALTSVC frame |frame| in wire frame format and store it in
+ * |bufs|.
+ *
+ * The caller must make sure that nghttp2_bufs_reset(bufs) is called
+ * before calling this function.
+ *
+ * This function always succeeds and returns 0.
+ */
+int nghttp2_frame_pack_altsvc(nghttp2_bufs *bufs, nghttp2_extension *ext);
+
+/*
+ * Unpacks ALTSVC wire format into |frame|. The |payload| of
+ * |payloadlen| bytes contains frame payload. This function assumes
+ * that frame->payload points to the nghttp2_ext_altsvc object.
+ *
+ * This function always succeeds and returns 0.
+ */
+void nghttp2_frame_unpack_altsvc_payload(nghttp2_extension *frame,
+ size_t origin_len, uint8_t *payload,
+ size_t payloadlen);
+
+/*
+ * Unpacks ALTSVC wire format into |frame|. This function only exists
+ * for unit test. After allocating buffer for fields, this function
+ * internally calls nghttp2_frame_unpack_altsvc_payload().
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_FRAME_SIZE_ERROR
+ * The payload is too small.
+ */
+int nghttp2_frame_unpack_altsvc_payload2(nghttp2_extension *frame,
+ const uint8_t *payload,
+ size_t payloadlen, nghttp2_mem *mem);
+
+/*
+ * Initializes HEADERS frame |frame| with given values. |frame| takes
+ * ownership of |nva|, so caller must not free it. If |stream_id| is
+ * not assigned yet, it must be -1.
+ */
+void nghttp2_frame_headers_init(nghttp2_headers *frame, uint8_t flags,
+ int32_t stream_id, nghttp2_headers_category cat,
+ const nghttp2_priority_spec *pri_spec,
+ nghttp2_nv *nva, size_t nvlen);
+
+void nghttp2_frame_headers_free(nghttp2_headers *frame, nghttp2_mem *mem);
+
+void nghttp2_frame_priority_init(nghttp2_priority *frame, int32_t stream_id,
+ const nghttp2_priority_spec *pri_spec);
+
+void nghttp2_frame_priority_free(nghttp2_priority *frame);
+
+void nghttp2_frame_rst_stream_init(nghttp2_rst_stream *frame, int32_t stream_id,
+ uint32_t error_code);
+
+void nghttp2_frame_rst_stream_free(nghttp2_rst_stream *frame);
+
+/*
+ * Initializes PUSH_PROMISE frame |frame| with given values. |frame|
+ * takes ownership of |nva|, so caller must not free it.
+ */
+void nghttp2_frame_push_promise_init(nghttp2_push_promise *frame, uint8_t flags,
+ int32_t stream_id,
+ int32_t promised_stream_id,
+ nghttp2_nv *nva, size_t nvlen);
+
+void nghttp2_frame_push_promise_free(nghttp2_push_promise *frame,
+ nghttp2_mem *mem);
+
+/*
+ * Initializes SETTINGS frame |frame| with given values. |frame| takes
+ * ownership of |iv|, so caller must not free it. The |flags| are
+ * bitwise-OR of one or more of nghttp2_settings_flag.
+ */
+void nghttp2_frame_settings_init(nghttp2_settings *frame, uint8_t flags,
+ nghttp2_settings_entry *iv, size_t niv);
+
+void nghttp2_frame_settings_free(nghttp2_settings *frame, nghttp2_mem *mem);
+
+/*
+ * Initializes PING frame |frame| with given values. If the
+ * |opqeue_data| is not NULL, it must point to 8 bytes memory region
+ * of data. The data pointed by |opaque_data| is copied. It can be
+ * NULL. In this case, 8 bytes NULL is used.
+ */
+void nghttp2_frame_ping_init(nghttp2_ping *frame, uint8_t flags,
+ const uint8_t *opque_data);
+
+void nghttp2_frame_ping_free(nghttp2_ping *frame);
+
+/*
+ * Initializes GOAWAY frame |frame| with given values. On success,
+ * this function takes ownership of |opaque_data|, so caller must not
+ * free it. If the |opaque_data_len| is 0, opaque_data could be NULL.
+ */
+void nghttp2_frame_goaway_init(nghttp2_goaway *frame, int32_t last_stream_id,
+ uint32_t error_code, uint8_t *opaque_data,
+ size_t opaque_data_len);
+
+void nghttp2_frame_goaway_free(nghttp2_goaway *frame, nghttp2_mem *mem);
+
+void nghttp2_frame_window_update_init(nghttp2_window_update *frame,
+ uint8_t flags, int32_t stream_id,
+ int32_t window_size_increment);
+
+void nghttp2_frame_window_update_free(nghttp2_window_update *frame);
+
+void nghttp2_frame_extension_init(nghttp2_extension *frame, uint8_t type,
+ uint8_t flags, int32_t stream_id,
+ void *payload);
+
+void nghttp2_frame_extension_free(nghttp2_extension *frame);
+
+/*
+ * Initializes ALTSVC frame |frame| with given values. This function
+ * assumes that frame->payload points to nghttp2_ext_altsvc object.
+ * Also |origin| and |field_value| are allocated in single buffer,
+ * starting |origin|. On success, this function takes ownership of
+ * |origin|, so caller must not free it.
+ */
+void nghttp2_frame_altsvc_init(nghttp2_extension *frame, int32_t stream_id,
+ uint8_t *origin, size_t origin_len,
+ uint8_t *field_value, size_t field_value_len);
+
+/*
+ * Frees up resources under |frame|. This function does not free
+ * nghttp2_ext_altsvc object pointed by frame->payload. This function
+ * only frees origin pointed by nghttp2_ext_altsvc.origin. Therefore,
+ * other fields must be allocated in the same buffer with origin.
+ */
+void nghttp2_frame_altsvc_free(nghttp2_extension *frame, nghttp2_mem *mem);
+
+/*
+ * Returns the number of padding bytes after payload. The total
+ * padding length is given in the |padlen|. The returned value does
+ * not include the Pad Length field. If |padlen| is 0, this function
+ * returns 0, regardless of frame->hd.flags.
+ */
+size_t nghttp2_frame_trail_padlen(nghttp2_frame *frame, size_t padlen);
+
+void nghttp2_frame_data_init(nghttp2_data *frame, uint8_t flags,
+ int32_t stream_id);
+
+void nghttp2_frame_data_free(nghttp2_data *frame);
+
+/*
+ * Makes copy of |iv| and return the copy. The |niv| is the number of
+ * entries in |iv|. This function returns the pointer to the copy if
+ * it succeeds, or NULL.
+ */
+nghttp2_settings_entry *nghttp2_frame_iv_copy(const nghttp2_settings_entry *iv,
+ size_t niv, nghttp2_mem *mem);
+
+/*
+ * Sorts the |nva| in ascending order of name and value. If names are
+ * equivalent, sort them by value.
+ */
+void nghttp2_nv_array_sort(nghttp2_nv *nva, size_t nvlen);
+
+/*
+ * Copies name/value pairs from |nva|, which contains |nvlen| pairs,
+ * to |*nva_ptr|, which is dynamically allocated so that all items can
+ * be stored. The resultant name and value in nghttp2_nv are
+ * guaranteed to be NULL-terminated even if the input is not
+ * null-terminated.
+ *
+ * The |*nva_ptr| must be freed using nghttp2_nv_array_del().
+ *
+ * This function returns 0 if it succeeds or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+int nghttp2_nv_array_copy(nghttp2_nv **nva_ptr, const nghttp2_nv *nva,
+ size_t nvlen, nghttp2_mem *mem);
+
+/*
+ * Returns nonzero if the name/value pair |a| equals to |b|. The name
+ * is compared in case-sensitive, because we ensure that this function
+ * is called after the name is lower-cased.
+ */
+int nghttp2_nv_equal(const nghttp2_nv *a, const nghttp2_nv *b);
+
+/*
+ * Frees |nva|.
+ */
+void nghttp2_nv_array_del(nghttp2_nv *nva, nghttp2_mem *mem);
+
+/*
+ * Checks that the |iv|, which includes |niv| entries, does not have
+ * invalid values.
+ *
+ * This function returns nonzero if it succeeds, or 0.
+ */
+int nghttp2_iv_check(const nghttp2_settings_entry *iv, size_t niv);
+
+/*
+ * Sets Pad Length field and flags and adjusts frame header position
+ * of each buffers in |bufs|. The number of padding is given in the
+ * |padlen| including Pad Length field. The |hd| is the frame header
+ * for the serialized data. This function fills zeros padding region
+ * unless framehd_only is nonzero.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_FRAME_SIZE_ERROR
+ * The length of the resulting frame is too large.
+ */
+int nghttp2_frame_add_pad(nghttp2_bufs *bufs, nghttp2_frame_hd *hd,
+ size_t padlen, int framehd_only);
+
+#endif /* NGHTTP2_FRAME_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2013 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_HD_H
+#define NGHTTP2_HD_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+
+#include "nghttp2_hd_huffman.h"
+#include "nghttp2_buf.h"
+#include "nghttp2_mem.h"
+#include "nghttp2_rcbuf.h"
+
+#define NGHTTP2_HD_DEFAULT_MAX_BUFFER_SIZE NGHTTP2_DEFAULT_HEADER_TABLE_SIZE
+#define NGHTTP2_HD_ENTRY_OVERHEAD 32
+
+/* The maximum length of one name/value pair. This is the sum of the
+ length of name and value. This is not specified by the spec. We
+ just chose the arbitrary size */
+#define NGHTTP2_HD_MAX_NV 65536
+
+/* Default size of maximum table buffer size for encoder. Even if
+ remote decoder notifies larger buffer size for its decoding,
+ encoder only uses the memory up to this value. */
+#define NGHTTP2_HD_DEFAULT_MAX_DEFLATE_BUFFER_SIZE (1 << 12)
+
+/* Exported for unit test */
+#define NGHTTP2_STATIC_TABLE_LENGTH 61
+
+/* Generated by genlibtokenlookup.py */
+typedef enum {
+ NGHTTP2_TOKEN__AUTHORITY = 0,
+ NGHTTP2_TOKEN__METHOD = 1,
+ NGHTTP2_TOKEN__PATH = 3,
+ NGHTTP2_TOKEN__SCHEME = 5,
+ NGHTTP2_TOKEN__STATUS = 7,
+ NGHTTP2_TOKEN_ACCEPT_CHARSET = 14,
+ NGHTTP2_TOKEN_ACCEPT_ENCODING = 15,
+ NGHTTP2_TOKEN_ACCEPT_LANGUAGE = 16,
+ NGHTTP2_TOKEN_ACCEPT_RANGES = 17,
+ NGHTTP2_TOKEN_ACCEPT = 18,
+ NGHTTP2_TOKEN_ACCESS_CONTROL_ALLOW_ORIGIN = 19,
+ NGHTTP2_TOKEN_AGE = 20,
+ NGHTTP2_TOKEN_ALLOW = 21,
+ NGHTTP2_TOKEN_AUTHORIZATION = 22,
+ NGHTTP2_TOKEN_CACHE_CONTROL = 23,
+ NGHTTP2_TOKEN_CONTENT_DISPOSITION = 24,
+ NGHTTP2_TOKEN_CONTENT_ENCODING = 25,
+ NGHTTP2_TOKEN_CONTENT_LANGUAGE = 26,
+ NGHTTP2_TOKEN_CONTENT_LENGTH = 27,
+ NGHTTP2_TOKEN_CONTENT_LOCATION = 28,
+ NGHTTP2_TOKEN_CONTENT_RANGE = 29,
+ NGHTTP2_TOKEN_CONTENT_TYPE = 30,
+ NGHTTP2_TOKEN_COOKIE = 31,
+ NGHTTP2_TOKEN_DATE = 32,
+ NGHTTP2_TOKEN_ETAG = 33,
+ NGHTTP2_TOKEN_EXPECT = 34,
+ NGHTTP2_TOKEN_EXPIRES = 35,
+ NGHTTP2_TOKEN_FROM = 36,
+ NGHTTP2_TOKEN_HOST = 37,
+ NGHTTP2_TOKEN_IF_MATCH = 38,
+ NGHTTP2_TOKEN_IF_MODIFIED_SINCE = 39,
+ NGHTTP2_TOKEN_IF_NONE_MATCH = 40,
+ NGHTTP2_TOKEN_IF_RANGE = 41,
+ NGHTTP2_TOKEN_IF_UNMODIFIED_SINCE = 42,
+ NGHTTP2_TOKEN_LAST_MODIFIED = 43,
+ NGHTTP2_TOKEN_LINK = 44,
+ NGHTTP2_TOKEN_LOCATION = 45,
+ NGHTTP2_TOKEN_MAX_FORWARDS = 46,
+ NGHTTP2_TOKEN_PROXY_AUTHENTICATE = 47,
+ NGHTTP2_TOKEN_PROXY_AUTHORIZATION = 48,
+ NGHTTP2_TOKEN_RANGE = 49,
+ NGHTTP2_TOKEN_REFERER = 50,
+ NGHTTP2_TOKEN_REFRESH = 51,
+ NGHTTP2_TOKEN_RETRY_AFTER = 52,
+ NGHTTP2_TOKEN_SERVER = 53,
+ NGHTTP2_TOKEN_SET_COOKIE = 54,
+ NGHTTP2_TOKEN_STRICT_TRANSPORT_SECURITY = 55,
+ NGHTTP2_TOKEN_TRANSFER_ENCODING = 56,
+ NGHTTP2_TOKEN_USER_AGENT = 57,
+ NGHTTP2_TOKEN_VARY = 58,
+ NGHTTP2_TOKEN_VIA = 59,
+ NGHTTP2_TOKEN_WWW_AUTHENTICATE = 60,
+ NGHTTP2_TOKEN_TE,
+ NGHTTP2_TOKEN_CONNECTION,
+ NGHTTP2_TOKEN_KEEP_ALIVE,
+ NGHTTP2_TOKEN_PROXY_CONNECTION,
+ NGHTTP2_TOKEN_UPGRADE,
+} nghttp2_token;
+
+struct nghttp2_hd_entry;
+typedef struct nghttp2_hd_entry nghttp2_hd_entry;
+
+typedef struct {
+ /* The buffer containing header field name. NULL-termination is
+ guaranteed. */
+ nghttp2_rcbuf *name;
+ /* The buffer containing header field value. NULL-termination is
+ guaranteed. */
+ nghttp2_rcbuf *value;
+ /* nghttp2_token value for name. It could be -1 if we have no token
+ for that header field name. */
+ int32_t token;
+ /* Bitwise OR of one or more of nghttp2_nv_flag. */
+ uint8_t flags;
+} nghttp2_hd_nv;
+
+struct nghttp2_hd_entry {
+ /* The header field name/value pair */
+ nghttp2_hd_nv nv;
+ /* This is solely for nghttp2_hd_{deflate,inflate}_get_table_entry
+ APIs to keep backward compatibility. */
+ nghttp2_nv cnv;
+ /* The next entry which shares same bucket in hash table. */
+ nghttp2_hd_entry *next;
+ /* The sequence number. We will increment it by one whenever we
+ store nghttp2_hd_entry to dynamic header table. */
+ uint32_t seq;
+ /* The hash value for header name (nv.name). */
+ uint32_t hash;
+};
+
+/* The entry used for static header table. */
+typedef struct {
+ nghttp2_rcbuf name;
+ nghttp2_rcbuf value;
+ nghttp2_nv cnv;
+ int32_t token;
+ uint32_t hash;
+} nghttp2_hd_static_entry;
+
+typedef struct {
+ nghttp2_hd_entry **buffer;
+ size_t mask;
+ size_t first;
+ size_t len;
+} nghttp2_hd_ringbuf;
+
+typedef enum {
+ NGHTTP2_HD_OPCODE_NONE,
+ NGHTTP2_HD_OPCODE_INDEXED,
+ NGHTTP2_HD_OPCODE_NEWNAME,
+ NGHTTP2_HD_OPCODE_INDNAME
+} nghttp2_hd_opcode;
+
+typedef enum {
+ NGHTTP2_HD_STATE_EXPECT_TABLE_SIZE,
+ NGHTTP2_HD_STATE_INFLATE_START,
+ NGHTTP2_HD_STATE_OPCODE,
+ NGHTTP2_HD_STATE_READ_TABLE_SIZE,
+ NGHTTP2_HD_STATE_READ_INDEX,
+ NGHTTP2_HD_STATE_NEWNAME_CHECK_NAMELEN,
+ NGHTTP2_HD_STATE_NEWNAME_READ_NAMELEN,
+ NGHTTP2_HD_STATE_NEWNAME_READ_NAMEHUFF,
+ NGHTTP2_HD_STATE_NEWNAME_READ_NAME,
+ NGHTTP2_HD_STATE_CHECK_VALUELEN,
+ NGHTTP2_HD_STATE_READ_VALUELEN,
+ NGHTTP2_HD_STATE_READ_VALUEHUFF,
+ NGHTTP2_HD_STATE_READ_VALUE
+} nghttp2_hd_inflate_state;
+
+typedef enum {
+ NGHTTP2_HD_WITH_INDEXING,
+ NGHTTP2_HD_WITHOUT_INDEXING,
+ NGHTTP2_HD_NEVER_INDEXING
+} nghttp2_hd_indexing_mode;
+
+typedef struct {
+ /* dynamic header table */
+ nghttp2_hd_ringbuf hd_table;
+ /* Memory allocator */
+ nghttp2_mem *mem;
+ /* Abstract buffer size of hd_table as described in the spec. This
+ is the sum of length of name/value in hd_table +
+ NGHTTP2_HD_ENTRY_OVERHEAD bytes overhead per each entry. */
+ size_t hd_table_bufsize;
+ /* The effective header table size. */
+ size_t hd_table_bufsize_max;
+ /* Next sequence number for nghttp2_hd_entry */
+ uint32_t next_seq;
+ /* If inflate/deflate error occurred, this value is set to 1 and
+ further invocation of inflate/deflate will fail with
+ NGHTTP2_ERR_HEADER_COMP. */
+ uint8_t bad;
+} nghttp2_hd_context;
+
+#define HD_MAP_SIZE 128
+
+typedef struct { nghttp2_hd_entry *table[HD_MAP_SIZE]; } nghttp2_hd_map;
+
+struct nghttp2_hd_deflater {
+ nghttp2_hd_context ctx;
+ nghttp2_hd_map map;
+ /* The upper limit of the header table size the deflater accepts. */
+ size_t deflate_hd_table_bufsize_max;
+ /* Minimum header table size notified in the next context update */
+ size_t min_hd_table_bufsize_max;
+ /* If nonzero, send header table size using encoding context update
+ in the next deflate process */
+ uint8_t notify_table_size_change;
+};
+
+struct nghttp2_hd_inflater {
+ nghttp2_hd_context ctx;
+ /* Stores current state of huffman decoding */
+ nghttp2_hd_huff_decode_context huff_decode_ctx;
+ /* header buffer */
+ nghttp2_buf namebuf, valuebuf;
+ nghttp2_rcbuf *namercbuf, *valuercbuf;
+ /* Pointer to the name/value pair which are used in the current
+ header emission. */
+ nghttp2_rcbuf *nv_name_keep, *nv_value_keep;
+ /* The number of bytes to read */
+ size_t left;
+ /* The index in indexed repr or indexed name */
+ size_t index;
+ /* The maximum header table size the inflater supports. This is the
+ same value transmitted in SETTINGS_HEADER_TABLE_SIZE */
+ size_t settings_hd_table_bufsize_max;
+ /* Minimum header table size set by nghttp2_hd_inflate_change_table_size */
+ size_t min_hd_table_bufsize_max;
+ /* The number of next shift to decode integer */
+ size_t shift;
+ nghttp2_hd_opcode opcode;
+ nghttp2_hd_inflate_state state;
+ /* nonzero if string is huffman encoded */
+ uint8_t huffman_encoded;
+ /* nonzero if deflater requires that current entry is indexed */
+ uint8_t index_required;
+ /* nonzero if deflater requires that current entry must not be
+ indexed */
+ uint8_t no_index;
+};
+
+/*
+ * Initializes the |ent| members. The reference counts of nv->name
+ * and nv->value are increased by one for each.
+ */
+void nghttp2_hd_entry_init(nghttp2_hd_entry *ent, nghttp2_hd_nv *nv);
+
+/*
+ * This function decreases the reference counts of nv->name and
+ * nv->value.
+ */
+void nghttp2_hd_entry_free(nghttp2_hd_entry *ent);
+
+/*
+ * Initializes |deflater| for deflating name/values pairs.
+ *
+ * The encoder only uses up to
+ * NGHTTP2_HD_DEFAULT_MAX_DEFLATE_BUFFER_SIZE bytes for header table
+ * even if the larger value is specified later in
+ * nghttp2_hd_change_table_size().
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+int nghttp2_hd_deflate_init(nghttp2_hd_deflater *deflater, nghttp2_mem *mem);
+
+/*
+ * Initializes |deflater| for deflating name/values pairs.
+ *
+ * The encoder only uses up to |deflate_hd_table_bufsize_max| bytes
+ * for header table even if the larger value is specified later in
+ * nghttp2_hd_change_table_size().
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+int nghttp2_hd_deflate_init2(nghttp2_hd_deflater *deflater,
+ size_t deflate_hd_table_bufsize_max,
+ nghttp2_mem *mem);
+
+/*
+ * Deallocates any resources allocated for |deflater|.
+ */
+void nghttp2_hd_deflate_free(nghttp2_hd_deflater *deflater);
+
+/*
+ * Deflates the |nva|, which has the |nvlen| name/value pairs, into
+ * the |bufs|.
+ *
+ * This function expands |bufs| as necessary to store the result. If
+ * buffers is full and the process still requires more space, this
+ * funtion fails and returns NGHTTP2_ERR_HEADER_COMP.
+ *
+ * After this function returns, it is safe to delete the |nva|.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_HEADER_COMP
+ * Deflation process has failed.
+ * NGHTTP2_ERR_BUFFER_ERROR
+ * Out of buffer space.
+ */
+int nghttp2_hd_deflate_hd_bufs(nghttp2_hd_deflater *deflater,
+ nghttp2_bufs *bufs, const nghttp2_nv *nva,
+ size_t nvlen);
+
+/*
+ * Initializes |inflater| for inflating name/values pairs.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * :enum:`NGHTTP2_ERR_NOMEM`
+ * Out of memory.
+ */
+int nghttp2_hd_inflate_init(nghttp2_hd_inflater *inflater, nghttp2_mem *mem);
+
+/*
+ * Deallocates any resources allocated for |inflater|.
+ */
+void nghttp2_hd_inflate_free(nghttp2_hd_inflater *inflater);
+
+/*
+ * Similar to nghttp2_hd_inflate_hd(), but this takes nghttp2_hd_nv
+ * instead of nghttp2_nv as output parameter |nv_out|. Other than
+ * that return values and semantics are the same as
+ * nghttp2_hd_inflate_hd().
+ */
+ssize_t nghttp2_hd_inflate_hd_nv(nghttp2_hd_inflater *inflater,
+ nghttp2_hd_nv *nv_out, int *inflate_flags,
+ const uint8_t *in, size_t inlen, int in_final);
+
+/* For unittesting purpose */
+int nghttp2_hd_emit_indname_block(nghttp2_bufs *bufs, size_t index,
+ nghttp2_nv *nv, int indexing_mode);
+
+/* For unittesting purpose */
+int nghttp2_hd_emit_newname_block(nghttp2_bufs *bufs, nghttp2_nv *nv,
+ int indexing_mode);
+
+/* For unittesting purpose */
+int nghttp2_hd_emit_table_size(nghttp2_bufs *bufs, size_t table_size);
+
+/* For unittesting purpose */
+nghttp2_hd_nv nghttp2_hd_table_get(nghttp2_hd_context *context, size_t index);
+
+/* For unittesting purpose */
+ssize_t nghttp2_hd_decode_length(uint32_t *res, size_t *shift_ptr, int *final,
+ uint32_t initial, size_t shift, uint8_t *in,
+ uint8_t *last, size_t prefix);
+
+/* Huffman encoding/decoding functions */
+
+/*
+ * Counts the required bytes to encode |src| with length |len|.
+ *
+ * This function returns the number of required bytes to encode given
+ * data, including padding of prefix of terminal symbol code. This
+ * function always succeeds.
+ */
+size_t nghttp2_hd_huff_encode_count(const uint8_t *src, size_t len);
+
+/*
+ * Encodes the given data |src| with length |srclen| to the |bufs|.
+ * This function expands extra buffers in |bufs| if necessary.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_BUFFER_ERROR
+ * Out of buffer space.
+ */
+int nghttp2_hd_huff_encode(nghttp2_bufs *bufs, const uint8_t *src,
+ size_t srclen);
+
+void nghttp2_hd_huff_decode_context_init(nghttp2_hd_huff_decode_context *ctx);
+
+/*
+ * Decodes the given data |src| with length |srclen|. The |ctx| must
+ * be initialized by nghttp2_hd_huff_decode_context_init(). The result
+ * will be written to |buf|. This function assumes that |buf| has the
+ * enough room to store the decoded byte string.
+ *
+ * The caller must set the |final| to nonzero if the given input is
+ * the final block.
+ *
+ * This function returns the number of read bytes from the |in|.
+ *
+ * If this function fails, it returns one of the following negative
+ * return codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_HEADER_COMP
+ * Decoding process has failed.
+ */
+ssize_t nghttp2_hd_huff_decode(nghttp2_hd_huff_decode_context *ctx,
+ nghttp2_buf *buf, const uint8_t *src,
+ size_t srclen, int final);
+
+#endif /* NGHTTP2_HD_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2013 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_HD_HUFFMAN_H
+#define NGHTTP2_HD_HUFFMAN_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+
+typedef enum {
+ /* FSA accepts this state as the end of huffman encoding
+ sequence. */
+ NGHTTP2_HUFF_ACCEPTED = 1,
+ /* This state emits symbol */
+ NGHTTP2_HUFF_SYM = (1 << 1),
+ /* If state machine reaches this state, decoding fails. */
+ NGHTTP2_HUFF_FAIL = (1 << 2)
+} nghttp2_huff_decode_flag;
+
+typedef struct {
+ /* huffman decoding state, which is actually the node ID of internal
+ huffman tree. We have 257 leaf nodes, but they are identical to
+ root node other than emitting a symbol, so we have 256 internal
+ nodes [1..255], inclusive. */
+ uint8_t state;
+ /* bitwise OR of zero or more of the nghttp2_huff_decode_flag */
+ uint8_t flags;
+ /* symbol if NGHTTP2_HUFF_SYM flag set */
+ uint8_t sym;
+} nghttp2_huff_decode;
+
+typedef nghttp2_huff_decode huff_decode_table_type[16];
+
+typedef struct {
+ /* Current huffman decoding state. We stripped leaf nodes, so the
+ value range is [0..255], inclusive. */
+ uint8_t state;
+ /* nonzero if we can say that the decoding process succeeds at this
+ state */
+ uint8_t accept;
+} nghttp2_hd_huff_decode_context;
+
+typedef struct {
+ /* The number of bits in this code */
+ uint32_t nbits;
+ /* Huffman code aligned to LSB */
+ uint32_t code;
+} nghttp2_huff_sym;
+
+extern const nghttp2_huff_sym huff_sym_table[];
+extern const nghttp2_huff_decode huff_decode_table[][16];
+
+#endif /* NGHTTP2_HD_HUFFMAN_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_HELPER_H
+#define NGHTTP2_HELPER_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <string.h>
+#include <stddef.h>
+
+#include <nghttp2/nghttp2.h>
+#include "nghttp2_mem.h"
+
+#define nghttp2_min(A, B) ((A) < (B) ? (A) : (B))
+#define nghttp2_max(A, B) ((A) > (B) ? (A) : (B))
+
+#define lstreq(A, B, N) ((sizeof((A)) - 1) == (N) && memcmp((A), (B), (N)) == 0)
+
+#define nghttp2_struct_of(ptr, type, member) \
+ ((type *)(void *)((char *)(ptr)-offsetof(type, member)))
+
+/*
+ * Copies 2 byte unsigned integer |n| in host byte order to |buf| in
+ * network byte order.
+ */
+void nghttp2_put_uint16be(uint8_t *buf, uint16_t n);
+
+/*
+ * Copies 4 byte unsigned integer |n| in host byte order to |buf| in
+ * network byte order.
+ */
+void nghttp2_put_uint32be(uint8_t *buf, uint32_t n);
+
+/*
+ * Retrieves 2 byte unsigned integer stored in |data| in network byte
+ * order and returns it in host byte order.
+ */
+uint16_t nghttp2_get_uint16(const uint8_t *data);
+
+/*
+ * Retrieves 4 byte unsigned integer stored in |data| in network byte
+ * order and returns it in host byte order.
+ */
+uint32_t nghttp2_get_uint32(const uint8_t *data);
+
+void nghttp2_downcase(uint8_t *s, size_t len);
+
+/*
+ * Adjusts |*local_window_size_ptr|, |*recv_window_size_ptr|,
+ * |*recv_reduction_ptr| with |*delta_ptr| which is the
+ * WINDOW_UPDATE's window_size_increment sent from local side. If
+ * |delta| is strictly larger than |*recv_window_size_ptr|,
+ * |*local_window_size_ptr| is increased by delta -
+ * *recv_window_size_ptr. If |delta| is negative,
+ * |*local_window_size_ptr| is decreased by delta.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_FLOW_CONTROL
+ * local_window_size overflow or gets negative.
+ */
+int nghttp2_adjust_local_window_size(int32_t *local_window_size_ptr,
+ int32_t *recv_window_size_ptr,
+ int32_t *recv_reduction_ptr,
+ int32_t *delta_ptr);
+
+/*
+ * This function works like nghttp2_adjust_local_window_size(). The
+ * difference is that this function assumes *delta_ptr >= 0, and
+ * *recv_window_size_ptr is not decreased by *delta_ptr.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_FLOW_CONTROL
+ * local_window_size overflow or gets negative.
+ */
+int nghttp2_increase_local_window_size(int32_t *local_window_size_ptr,
+ int32_t *recv_window_size_ptr,
+ int32_t *recv_reduction_ptr,
+ int32_t *delta_ptr);
+
+/*
+ * Returns non-zero if the function decided that WINDOW_UPDATE should
+ * be sent.
+ */
+int nghttp2_should_send_window_update(int32_t local_window_size,
+ int32_t recv_window_size);
+
+/*
+ * Copies the buffer |src| of length |len| to the destination pointed
+ * by the |dest|, assuming that the |dest| is at lest |len| bytes long
+ * . Returns dest + len.
+ */
+uint8_t *nghttp2_cpymem(uint8_t *dest, const void *src, size_t len);
+
+#endif /* NGHTTP2_HELPER_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2015 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_HTTP_H
+#define NGHTTP2_HTTP_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+#include "nghttp2_session.h"
+#include "nghttp2_stream.h"
+
+/*
+ * This function is called when HTTP header field |nv| in |frame| is
+ * received for |stream|. This function will validate |nv| against
+ * the current state of stream.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_HTTP_HEADER
+ * Invalid HTTP header field was received.
+ * NGHTTP2_ERR_IGN_HTTP_HEADER
+ * Invalid HTTP header field was received but it can be treated as
+ * if it was not received because of compatibility reasons.
+ */
+int nghttp2_http_on_header(nghttp2_session *session, nghttp2_stream *stream,
+ nghttp2_frame *frame, nghttp2_hd_nv *nv,
+ int trailer);
+
+/*
+ * This function is called when request header is received. This
+ * function performs validation and returns 0 if it succeeds, or -1.
+ */
+int nghttp2_http_on_request_headers(nghttp2_stream *stream,
+ nghttp2_frame *frame);
+
+/*
+ * This function is called when response header is received. This
+ * function performs validation and returns 0 if it succeeds, or -1.
+ */
+int nghttp2_http_on_response_headers(nghttp2_stream *stream);
+
+/*
+ * This function is called trailer header (for both request and
+ * response) is received. This function performs validation and
+ * returns 0 if it succeeds, or -1.
+ */
+int nghttp2_http_on_trailer_headers(nghttp2_stream *stream,
+ nghttp2_frame *frame);
+
+/*
+ * This function is called when END_STREAM flag is seen in incoming
+ * frame. This function performs validation and returns 0 if it
+ * succeeds, or -1.
+ */
+int nghttp2_http_on_remote_end_stream(nghttp2_stream *stream);
+
+/*
+ * This function is called when chunk of data is received. This
+ * function performs validation and returns 0 if it succeeds, or -1.
+ */
+int nghttp2_http_on_data_chunk(nghttp2_stream *stream, size_t n);
+
+/*
+ * This function inspects header field in |frame| and records its
+ * method in stream->http_flags. If frame->hd.type is neither
+ * NGHTTP2_HEADERS nor NGHTTP2_PUSH_PROMISE, this function does
+ * nothing.
+ */
+void nghttp2_http_record_request_method(nghttp2_stream *stream,
+ nghttp2_frame *frame);
+
+#endif /* NGHTTP2_HTTP_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_INT_H
+#define NGHTTP2_INT_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+/* Macros, types and constants for internal use */
+
+#ifdef DEBUGBUILD
+#define DEBUGF(x) x
+#else
+#define DEBUGF(x) \
+ do { \
+ } while (0)
+#endif
+
+/* "less" function, return nonzero if |lhs| is less than |rhs|. */
+typedef int (*nghttp2_less)(const void *lhs, const void *rhs);
+
+/* Internal error code. They must be in the range [-499, -100],
+ inclusive. */
+typedef enum {
+ NGHTTP2_ERR_CREDENTIAL_PENDING = -101,
+ NGHTTP2_ERR_IGN_HEADER_BLOCK = -103,
+ NGHTTP2_ERR_IGN_PAYLOAD = -104,
+ /*
+ * Invalid HTTP header field was received but it can be treated as
+ * if it was not received because of compatibility reasons.
+ */
+ NGHTTP2_ERR_IGN_HTTP_HEADER = -105
+} nghttp2_internal_error;
+
+#endif /* NGHTTP2_INT_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_MAP_H
+#define NGHTTP2_MAP_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+#include "nghttp2_int.h"
+#include "nghttp2_mem.h"
+
+/* Implementation of unordered map */
+
+typedef int32_t key_type;
+
+typedef struct nghttp2_map_entry {
+ struct nghttp2_map_entry *next;
+ key_type key;
+#if SIZEOF_INT_P == 4
+ /* we requires 8 bytes aligment */
+ int64_t pad;
+#endif
+} nghttp2_map_entry;
+
+typedef struct {
+ nghttp2_map_entry **table;
+ nghttp2_mem *mem;
+ size_t size;
+ uint32_t tablelen;
+} nghttp2_map;
+
+/*
+ * Initializes the map |map|.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_map_init(nghttp2_map *map, nghttp2_mem *mem);
+
+/*
+ * Deallocates any resources allocated for |map|. The stored entries
+ * are not freed by this function. Use nghttp2_map_each_free() to free
+ * each entries.
+ */
+void nghttp2_map_free(nghttp2_map *map);
+
+/*
+ * Deallocates each entries using |func| function and any resources
+ * allocated for |map|. The |func| function is responsible for freeing
+ * given the |entry| object. The |ptr| will be passed to the |func| as
+ * send argument. The return value of the |func| will be ignored.
+ */
+void nghttp2_map_each_free(nghttp2_map *map,
+ int (*func)(nghttp2_map_entry *entry, void *ptr),
+ void *ptr);
+
+/*
+ * Initializes the |entry| with the |key|. All entries to be inserted
+ * to the map must be initialized with this function.
+ */
+void nghttp2_map_entry_init(nghttp2_map_entry *entry, key_type key);
+
+/*
+ * Inserts the new |entry| with the key |entry->key| to the map |map|.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_INVALID_ARGUMENT
+ * The item associated by |key| already exists.
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_map_insert(nghttp2_map *map, nghttp2_map_entry *entry);
+
+/*
+ * Returns the entry associated by the key |key|. If there is no such
+ * entry, this function returns NULL.
+ */
+nghttp2_map_entry *nghttp2_map_find(nghttp2_map *map, key_type key);
+
+/*
+ * Removes the entry associated by the key |key| from the |map|. The
+ * removed entry is not freed by this function.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_INVALID_ARGUMENT
+ * The entry associated by |key| does not exist.
+ */
+int nghttp2_map_remove(nghttp2_map *map, key_type key);
+
+/*
+ * Returns the number of items stored in the map |map|.
+ */
+size_t nghttp2_map_size(nghttp2_map *map);
+
+/*
+ * Applies the function |func| to each entry in the |map| with the
+ * optional user supplied pointer |ptr|.
+ *
+ * If the |func| returns 0, this function calls the |func| with the
+ * next entry. If the |func| returns nonzero, it will not call the
+ * |func| for further entries and return the return value of the
+ * |func| immediately. Thus, this function returns 0 if all the
+ * invocations of the |func| return 0, or nonzero value which the last
+ * invocation of |func| returns.
+ *
+ * Don't use this function to free each entry. Use
+ * nghttp2_map_each_free() instead.
+ */
+int nghttp2_map_each(nghttp2_map *map,
+ int (*func)(nghttp2_map_entry *entry, void *ptr),
+ void *ptr);
+
+#endif /* NGHTTP2_MAP_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2014 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_MEM_H
+#define NGHTTP2_MEM_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+
+/* The default, system standard memory allocator */
+nghttp2_mem *nghttp2_mem_default(void);
+
+/* Convenient wrapper functions to call allocator function in
+ |mem|. */
+void *nghttp2_mem_malloc(nghttp2_mem *mem, size_t size);
+void nghttp2_mem_free(nghttp2_mem *mem, void *ptr);
+void nghttp2_mem_free2(nghttp2_free free_func, void *ptr, void *mem_user_data);
+void *nghttp2_mem_calloc(nghttp2_mem *mem, size_t nmemb, size_t size);
+void *nghttp2_mem_realloc(nghttp2_mem *mem, void *ptr, size_t size);
+
+#endif /* NGHTTP2_MEM_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_NET_H
+#define NGHTTP2_NET_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#endif /* HAVE_ARPA_INET_H */
+
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif /* HAVE_NETINET_IN_H */
+
+#include <nghttp2/nghttp2.h>
+
+#if defined(WIN32)
+/* Windows requires ws2_32 library for ntonl family functions. We
+ define inline functions for those function so that we don't have
+ dependeny on that lib. */
+
+#ifdef _MSC_VER
+#define STIN static __inline
+#else
+#define STIN static inline
+#endif
+
+STIN uint32_t htonl(uint32_t hostlong) {
+ uint32_t res;
+ unsigned char *p = (unsigned char *)&res;
+ *p++ = hostlong >> 24;
+ *p++ = (hostlong >> 16) & 0xffu;
+ *p++ = (hostlong >> 8) & 0xffu;
+ *p = hostlong & 0xffu;
+ return res;
+}
+
+STIN uint16_t htons(uint16_t hostshort) {
+ uint16_t res;
+ unsigned char *p = (unsigned char *)&res;
+ *p++ = hostshort >> 8;
+ *p = hostshort & 0xffu;
+ return res;
+}
+
+STIN uint32_t ntohl(uint32_t netlong) {
+ uint32_t res;
+ unsigned char *p = (unsigned char *)&netlong;
+ res = *p++ << 24;
+ res += *p++ << 16;
+ res += *p++ << 8;
+ res += *p;
+ return res;
+}
+
+STIN uint16_t ntohs(uint16_t netshort) {
+ uint16_t res;
+ unsigned char *p = (unsigned char *)&netshort;
+ res = *p++ << 8;
+ res += *p;
+ return res;
+}
+
+#endif /* WIN32 */
+
+#endif /* NGHTTP2_NET_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_NPN_H
+#define NGHTTP2_NPN_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+
+#endif /* NGHTTP2_NPN_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2014 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_OPTION_H
+#define NGHTTP2_OPTION_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+
+/**
+ * Configuration options
+ */
+typedef enum {
+ /**
+ * This option prevents the library from sending WINDOW_UPDATE for a
+ * connection automatically. If this option is set to nonzero, the
+ * library won't send WINDOW_UPDATE for DATA until application calls
+ * nghttp2_session_consume() to indicate the amount of consumed
+ * DATA. By default, this option is set to zero.
+ */
+ NGHTTP2_OPT_NO_AUTO_WINDOW_UPDATE = 1,
+ /**
+ * This option sets the SETTINGS_MAX_CONCURRENT_STREAMS value of
+ * remote endpoint as if it is received in SETTINGS frame. Without
+ * specifying this option, before the local endpoint receives
+ * SETTINGS_MAX_CONCURRENT_STREAMS in SETTINGS frame from remote
+ * endpoint, SETTINGS_MAX_CONCURRENT_STREAMS is unlimited. This may
+ * cause problem if local endpoint submits lots of requests
+ * initially and sending them at once to the remote peer may lead to
+ * the rejection of some requests. Specifying this option to the
+ * sensible value, say 100, may avoid this kind of issue. This value
+ * will be overwritten if the local endpoint receives
+ * SETTINGS_MAX_CONCURRENT_STREAMS from the remote endpoint.
+ */
+ NGHTTP2_OPT_PEER_MAX_CONCURRENT_STREAMS = 1 << 1,
+ NGHTTP2_OPT_NO_RECV_CLIENT_MAGIC = 1 << 2,
+ NGHTTP2_OPT_NO_HTTP_MESSAGING = 1 << 3,
+ NGHTTP2_OPT_MAX_RESERVED_REMOTE_STREAMS = 1 << 4,
+ NGHTTP2_OPT_USER_RECV_EXT_TYPES = 1 << 5,
+ NGHTTP2_OPT_NO_AUTO_PING_ACK = 1 << 6,
+ NGHTTP2_OPT_BUILTIN_RECV_EXT_TYPES = 1 << 7,
+ NGHTTP2_OPT_MAX_SEND_HEADER_BLOCK_LENGTH = 1 << 8,
+} nghttp2_option_flag;
+
+/**
+ * Struct to store option values for nghttp2_session.
+ */
+struct nghttp2_option {
+ /**
+ * NGHTTP2_OPT_MAX_SEND_HEADER_BLOCK_LENGTH
+ */
+ size_t max_send_header_block_length;
+ /**
+ * Bitwise OR of nghttp2_option_flag to determine that which fields
+ * are specified.
+ */
+ uint32_t opt_set_mask;
+ /**
+ * NGHTTP2_OPT_PEER_MAX_CONCURRENT_STREAMS
+ */
+ uint32_t peer_max_concurrent_streams;
+ /**
+ * NGHTTP2_OPT_MAX_RESERVED_REMOTE_STREAMS
+ */
+ uint32_t max_reserved_remote_streams;
+ /**
+ * NGHTTP2_OPT_BUILTIN_RECV_EXT_TYPES
+ */
+ uint32_t builtin_recv_ext_types;
+ /**
+ * NGHTTP2_OPT_NO_AUTO_WINDOW_UPDATE
+ */
+ int no_auto_window_update;
+ /**
+ * NGHTTP2_OPT_NO_RECV_CLIENT_MAGIC
+ */
+ int no_recv_client_magic;
+ /**
+ * NGHTTP2_OPT_NO_HTTP_MESSAGING
+ */
+ int no_http_messaging;
+ /**
+ * NGHTTP2_OPT_NO_AUTO_PING_ACK
+ */
+ int no_auto_ping_ack;
+ /**
+ * NGHTTP2_OPT_USER_RECV_EXT_TYPES
+ */
+ uint8_t user_recv_ext_types[32];
+};
+
+#endif /* NGHTTP2_OPTION_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_OUTBOUND_ITEM_H
+#define NGHTTP2_OUTBOUND_ITEM_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+#include "nghttp2_frame.h"
+#include "nghttp2_mem.h"
+
+/* struct used for HEADERS and PUSH_PROMISE frame */
+typedef struct {
+ nghttp2_data_provider data_prd;
+ void *stream_user_data;
+ /* error code when request HEADERS is canceled by RST_STREAM while
+ it is in queue. */
+ uint32_t error_code;
+ /* nonzero if request HEADERS is canceled. The error code is stored
+ in |error_code|. */
+ uint8_t canceled;
+} nghttp2_headers_aux_data;
+
+/* struct used for DATA frame */
+typedef struct {
+ /**
+ * The data to be sent for this DATA frame.
+ */
+ nghttp2_data_provider data_prd;
+ /**
+ * The flags of DATA frame. We use separate flags here and
+ * nghttp2_data frame. The latter contains flags actually sent to
+ * peer. This |flags| may contain NGHTTP2_FLAG_END_STREAM and only
+ * when |eof| becomes nonzero, flags in nghttp2_data has
+ * NGHTTP2_FLAG_END_STREAM set.
+ */
+ uint8_t flags;
+ /**
+ * The flag to indicate whether EOF was reached or not. Initially
+ * |eof| is 0. It becomes 1 after all data were read.
+ */
+ uint8_t eof;
+ /**
+ * The flag to indicate that NGHTTP2_DATA_FLAG_NO_COPY is used.
+ */
+ uint8_t no_copy;
+} nghttp2_data_aux_data;
+
+typedef enum {
+ NGHTTP2_GOAWAY_AUX_NONE = 0x0,
+ /* indicates that session should be terminated after the
+ transmission of this frame. */
+ NGHTTP2_GOAWAY_AUX_TERM_ON_SEND = 0x1,
+ /* indicates that this GOAWAY is just a notification for graceful
+ shutdown. No nghttp2_session.goaway_flags should be updated on
+ the reaction to this frame. */
+ NGHTTP2_GOAWAY_AUX_SHUTDOWN_NOTICE = 0x2
+} nghttp2_goaway_aux_flag;
+
+/* struct used for GOAWAY frame */
+typedef struct {
+ /* bitwise-OR of one or more of nghttp2_goaway_aux_flag. */
+ uint8_t flags;
+} nghttp2_goaway_aux_data;
+
+/* struct used for extension frame */
+typedef struct {
+ /* nonzero if this extension frame is serialized by library
+ function, instead of user-defined callbacks. */
+ uint8_t builtin;
+} nghttp2_ext_aux_data;
+
+/* Additional data which cannot be stored in nghttp2_frame struct */
+typedef union {
+ nghttp2_data_aux_data data;
+ nghttp2_headers_aux_data headers;
+ nghttp2_goaway_aux_data goaway;
+ nghttp2_ext_aux_data ext;
+} nghttp2_aux_data;
+
+struct nghttp2_outbound_item;
+typedef struct nghttp2_outbound_item nghttp2_outbound_item;
+
+struct nghttp2_outbound_item {
+ nghttp2_frame frame;
+ /* Storage for extension frame payload. frame->ext.payload points
+ to this structure to avoid frequent memory allocation. */
+ nghttp2_ext_frame_payload ext_frame_payload;
+ nghttp2_aux_data aux_data;
+ /* The priority used in priority comparion. Smaller is served
+ ealier. For PING, SETTINGS and non-DATA frames (excluding
+ response HEADERS frame) have dedicated cycle value defined above.
+ For DATA frame, cycle is computed by taking into account of
+ effective weight and frame payload length previously sent, so
+ that the amount of transmission is distributed across streams
+ proportional to effective weight (inside a tree). */
+ uint64_t cycle;
+ nghttp2_outbound_item *qnext;
+ /* nonzero if this object is queued, except for DATA or HEADERS
+ which are attached to stream as item. */
+ uint8_t queued;
+};
+
+/*
+ * Initializes |item|. No memory allocation is done in this function.
+ * Don't call nghttp2_outbound_item_free() until frame member is
+ * initialized.
+ */
+void nghttp2_outbound_item_init(nghttp2_outbound_item *item);
+
+/*
+ * Deallocates resource for |item|. If |item| is NULL, this function
+ * does nothing.
+ */
+void nghttp2_outbound_item_free(nghttp2_outbound_item *item, nghttp2_mem *mem);
+
+/*
+ * queue for nghttp2_outbound_item.
+ */
+typedef struct {
+ nghttp2_outbound_item *head, *tail;
+ /* number of items in this queue. */
+ size_t n;
+} nghttp2_outbound_queue;
+
+void nghttp2_outbound_queue_init(nghttp2_outbound_queue *q);
+
+/* Pushes |item| into |q| */
+void nghttp2_outbound_queue_push(nghttp2_outbound_queue *q,
+ nghttp2_outbound_item *item);
+
+/* Pops |item| at the top from |q|. If |q| is empty, nothing
+ happens. */
+void nghttp2_outbound_queue_pop(nghttp2_outbound_queue *q);
+
+/* Returns the top item. */
+#define nghttp2_outbound_queue_top(Q) ((Q)->head)
+
+/* Returns the size of the queue */
+#define nghttp2_outbound_queue_size(Q) ((Q)->n)
+
+#endif /* NGHTTP2_OUTBOUND_ITEM_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_PQ_H
+#define NGHTTP2_PQ_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+#include "nghttp2_int.h"
+#include "nghttp2_mem.h"
+
+/* Implementation of priority queue */
+
+typedef struct { size_t index; } nghttp2_pq_entry;
+
+typedef struct {
+ /* The pointer to the pointer to the item stored */
+ nghttp2_pq_entry **q;
+ /* Memory allocator */
+ nghttp2_mem *mem;
+ /* The number of items sotred */
+ size_t length;
+ /* The maximum number of items this pq can store. This is
+ automatically extended when length is reached to this value. */
+ size_t capacity;
+ /* The less function between items */
+ nghttp2_less less;
+} nghttp2_pq;
+
+/*
+ * Initializes priority queue |pq| with compare function |cmp|.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+int nghttp2_pq_init(nghttp2_pq *pq, nghttp2_less less, nghttp2_mem *mem);
+
+/*
+ * Deallocates any resources allocated for |pq|. The stored items are
+ * not freed by this function.
+ */
+void nghttp2_pq_free(nghttp2_pq *pq);
+
+/*
+ * Adds |item| to the priority queue |pq|.
+ *
+ * This function returns 0 if it succeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+int nghttp2_pq_push(nghttp2_pq *pq, nghttp2_pq_entry *item);
+
+/*
+ * Returns item at the top of the queue |pq|. If the queue is empty,
+ * this function returns NULL.
+ */
+nghttp2_pq_entry *nghttp2_pq_top(nghttp2_pq *pq);
+
+/*
+ * Pops item at the top of the queue |pq|. The popped item is not
+ * freed by this function.
+ */
+void nghttp2_pq_pop(nghttp2_pq *pq);
+
+/*
+ * Returns nonzero if the queue |pq| is empty.
+ */
+int nghttp2_pq_empty(nghttp2_pq *pq);
+
+/*
+ * Returns the number of items in the queue |pq|.
+ */
+size_t nghttp2_pq_size(nghttp2_pq *pq);
+
+typedef int (*nghttp2_pq_item_cb)(nghttp2_pq_entry *item, void *arg);
+
+/*
+ * Updates each item in |pq| using function |fun| and re-construct
+ * priority queue. The |fun| must return non-zero if it modifies the
+ * item in a way that it affects ordering in the priority queue. The
+ * |arg| is passed to the 2nd parameter of |fun|.
+ */
+void nghttp2_pq_update(nghttp2_pq *pq, nghttp2_pq_item_cb fun, void *arg);
+
+/*
+ * Applys |fun| to each item in |pq|. The |arg| is passed as arg
+ * parameter to callback function. This function must not change the
+ * ordering key. If the return value from callback is nonzero, this
+ * function returns 1 immediately without iterating remaining items.
+ * Otherwise this function returns 0.
+ */
+int nghttp2_pq_each(nghttp2_pq *pq, nghttp2_pq_item_cb fun, void *arg);
+
+/*
+ * Removes |item| from priority queue.
+ */
+void nghttp2_pq_remove(nghttp2_pq *pq, nghttp2_pq_entry *item);
+
+#endif /* NGHTTP2_PQ_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2014 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_PRIORITY_SPEC_H
+#define NGHTTP2_PRIORITY_SPEC_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+
+/*
+ * This function normalizes pri_spec->weight if it is out of range.
+ * If pri_spec->weight is less than NGHTTP2_MIN_WEIGHT, it is set to
+ * NGHTTP2_MIN_WEIGHT. If pri_spec->weight is larger than
+ * NGHTTP2_MAX_WEIGHT, it is set to NGHTTP2_MAX_WEIGHT.
+ */
+void nghttp2_priority_spec_normalize_weight(nghttp2_priority_spec *pri_spec);
+
+#endif /* NGHTTP2_PRIORITY_SPEC_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_QUEUE_H
+#define NGHTTP2_QUEUE_H
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+
+typedef struct nghttp2_queue_cell {
+ void *data;
+ struct nghttp2_queue_cell *next;
+} nghttp2_queue_cell;
+
+typedef struct { nghttp2_queue_cell *front, *back; } nghttp2_queue;
+
+void nghttp2_queue_init(nghttp2_queue *queue);
+void nghttp2_queue_free(nghttp2_queue *queue);
+int nghttp2_queue_push(nghttp2_queue *queue, void *data);
+void nghttp2_queue_pop(nghttp2_queue *queue);
+void *nghttp2_queue_front(nghttp2_queue *queue);
+void *nghttp2_queue_back(nghttp2_queue *queue);
+int nghttp2_queue_empty(nghttp2_queue *queue);
+
+#endif /* NGHTTP2_QUEUE_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2016 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_RCBUF_H
+#define NGHTTP2_RCBUF_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+
+struct nghttp2_rcbuf {
+ /* custom memory allocator belongs to the mem parameter when
+ creating this object. */
+ void *mem_user_data;
+ nghttp2_free free;
+ /* The pointer to the underlying buffer */
+ uint8_t *base;
+ /* Size of buffer pointed by |base|. */
+ size_t len;
+ /* Reference count */
+ int32_t ref;
+};
+
+/*
+ * Allocates nghttp2_rcbuf object with |size| as initial buffer size.
+ * When the function succeeds, the reference count becomes 1.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM:
+ * Out of memory.
+ */
+int nghttp2_rcbuf_new(nghttp2_rcbuf **rcbuf_ptr, size_t size, nghttp2_mem *mem);
+
+/*
+ * Like nghttp2_rcbuf_new(), but initializes the buffer with |src| of
+ * length |srclen|. This function allocates additional byte at the
+ * end and puts '\0' into it, so that the resulting buffer could be
+ * used as NULL-terminated string. Still (*rcbuf_ptr)->len equals to
+ * |srclen|.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM:
+ * Out of memory.
+ */
+int nghttp2_rcbuf_new2(nghttp2_rcbuf **rcbuf_ptr, const uint8_t *src,
+ size_t srclen, nghttp2_mem *mem);
+
+/*
+ * Frees |rcbuf| itself, regardless of its reference cout.
+ */
+void nghttp2_rcbuf_del(nghttp2_rcbuf *rcbuf);
+
+#endif /* NGHTTP2_RCBUF_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_SESSION_H
+#define NGHTTP2_SESSION_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+#include "nghttp2_map.h"
+#include "nghttp2_frame.h"
+#include "nghttp2_hd.h"
+#include "nghttp2_stream.h"
+#include "nghttp2_outbound_item.h"
+#include "nghttp2_int.h"
+#include "nghttp2_buf.h"
+#include "nghttp2_callbacks.h"
+#include "nghttp2_mem.h"
+
+/* The global variable for tests where we want to disable strict
+ preface handling. */
+extern int nghttp2_enable_strict_preface;
+
+/*
+ * Option flags.
+ */
+typedef enum {
+ NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE = 1 << 0,
+ NGHTTP2_OPTMASK_NO_RECV_CLIENT_MAGIC = 1 << 1,
+ NGHTTP2_OPTMASK_NO_HTTP_MESSAGING = 1 << 2,
+ NGHTTP2_OPTMASK_NO_AUTO_PING_ACK = 1 << 3
+} nghttp2_optmask;
+
+/*
+ * bitmask for built-in type to enable the default handling for that
+ * type of the frame.
+ */
+typedef enum {
+ NGHTTP2_TYPEMASK_NONE = 0,
+ NGHTTP2_TYPEMASK_ALTSVC = 1 << 0
+} nghttp2_typemask;
+
+typedef enum {
+ NGHTTP2_OB_POP_ITEM,
+ NGHTTP2_OB_SEND_DATA,
+ NGHTTP2_OB_SEND_NO_COPY,
+ NGHTTP2_OB_SEND_CLIENT_MAGIC
+} nghttp2_outbound_state;
+
+typedef struct {
+ nghttp2_outbound_item *item;
+ nghttp2_bufs framebufs;
+ nghttp2_outbound_state state;
+} nghttp2_active_outbound_item;
+
+/* Buffer length for inbound raw byte stream used in
+ nghttp2_session_recv(). */
+#define NGHTTP2_INBOUND_BUFFER_LENGTH 3072//16384--LiuHan/08.12
+
+/* The default maximum number of incoming reserved streams */
+#define NGHTTP2_MAX_INCOMING_RESERVED_STREAMS 200
+
+/* Even if we have less SETTINGS_MAX_CONCURRENT_STREAMS than this
+ number, we keep NGHTTP2_MIN_IDLE_STREAMS streams in idle state */
+#define NGHTTP2_MIN_IDLE_STREAMS 16
+
+/* The maximum number of items in outbound queue, which is considered
+ as flooding caused by peer. All frames are not considered here.
+ We only consider PING + ACK and SETTINGS + ACK. This is because
+ they both are response to the frame initiated by peer and peer can
+ send as many of them as they want. If peer does not read network,
+ response frames are stacked up, which leads to memory exhaustion.
+ The value selected here is arbitrary, but safe value and if we have
+ these frames in this number, it is considered suspicious. */
+#define NGHTTP2_MAX_OBQ_FLOOD_ITEM 10000
+
+/* The default value of maximum number of concurrent streams. */
+#define NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS 0xffffffffu
+
+/* Internal state when receiving incoming frame */
+typedef enum {
+ /* Receiving frame header */
+ NGHTTP2_IB_READ_CLIENT_MAGIC,
+ NGHTTP2_IB_READ_FIRST_SETTINGS,
+ NGHTTP2_IB_READ_HEAD,
+ NGHTTP2_IB_READ_NBYTE,
+ NGHTTP2_IB_READ_HEADER_BLOCK,
+ NGHTTP2_IB_IGN_HEADER_BLOCK,
+ NGHTTP2_IB_IGN_PAYLOAD,
+ NGHTTP2_IB_FRAME_SIZE_ERROR,
+ NGHTTP2_IB_READ_SETTINGS,
+ NGHTTP2_IB_READ_GOAWAY_DEBUG,
+ NGHTTP2_IB_EXPECT_CONTINUATION,
+ NGHTTP2_IB_IGN_CONTINUATION,
+ NGHTTP2_IB_READ_PAD_DATA,
+ NGHTTP2_IB_READ_DATA,
+ NGHTTP2_IB_IGN_DATA,
+ NGHTTP2_IB_IGN_ALL,
+ NGHTTP2_IB_READ_ALTSVC_PAYLOAD,
+ NGHTTP2_IB_READ_EXTENSION_PAYLOAD
+} nghttp2_inbound_state;
+
+typedef struct {
+ nghttp2_frame frame;
+ /* Storage for extension frame payload. frame->ext.payload points
+ to this structure to avoid frequent memory allocation. */
+ nghttp2_ext_frame_payload ext_frame_payload;
+ /* The received SETTINGS entry. For the standard settings entries,
+ we only keep the last seen value. For
+ SETTINGS_HEADER_TABLE_SIZE, we also keep minimum value in the
+ last index. */
+ nghttp2_settings_entry *iv;
+ /* buffer pointers to small buffer, raw_sbuf */
+ nghttp2_buf sbuf;
+ /* buffer pointers to large buffer, raw_lbuf */
+ nghttp2_buf lbuf;
+ /* Large buffer, malloced on demand */
+ uint8_t *raw_lbuf;
+ /* The number of entry filled in |iv| */
+ size_t niv;
+ /* The number of entries |iv| can store. */
+ size_t max_niv;
+ /* How many bytes we still need to receive for current frame */
+ size_t payloadleft;
+ /* padding length for the current frame */
+ size_t padlen;
+ nghttp2_inbound_state state;
+ /* Small buffer. Currently the largest contiguous chunk to buffer
+ is frame header. We buffer part of payload, but they are smaller
+ than frame header. */
+ uint8_t raw_sbuf[NGHTTP2_FRAME_HDLEN];
+} nghttp2_inbound_frame;
+
+typedef struct {
+ uint32_t header_table_size;
+ uint32_t enable_push;
+ uint32_t max_concurrent_streams;
+ uint32_t initial_window_size;
+ uint32_t max_frame_size;
+ uint32_t max_header_list_size;
+} nghttp2_settings_storage;
+
+typedef enum {
+ NGHTTP2_GOAWAY_NONE = 0,
+ /* Flag means that connection should be terminated after sending GOAWAY. */
+ NGHTTP2_GOAWAY_TERM_ON_SEND = 0x1,
+ /* Flag means GOAWAY to terminate session has been sent */
+ NGHTTP2_GOAWAY_TERM_SENT = 0x2,
+ /* Flag means GOAWAY was sent */
+ NGHTTP2_GOAWAY_SENT = 0x4,
+ /* Flag means GOAWAY was received */
+ NGHTTP2_GOAWAY_RECV = 0x8
+} nghttp2_goaway_flag;
+
+/* nghttp2_inflight_settings stores the SETTINGS entries which local
+ endpoint has sent to the remote endpoint, and has not received ACK
+ yet. */
+struct nghttp2_inflight_settings {
+ struct nghttp2_inflight_settings *next;
+ nghttp2_settings_entry *iv;
+ size_t niv;
+};
+
+typedef struct nghttp2_inflight_settings nghttp2_inflight_settings;
+
+struct nghttp2_session {
+ nghttp2_map /* <nghttp2_stream*> */ streams;
+ /* root of dependency tree*/
+ nghttp2_stream root;
+ /* Queue for outbound urgent frames (PING and SETTINGS) */
+ nghttp2_outbound_queue ob_urgent;
+ /* Queue for non-DATA frames */
+ nghttp2_outbound_queue ob_reg;
+ /* Queue for outbound stream-creating HEADERS (request or push
+ response) frame, which are subject to
+ SETTINGS_MAX_CONCURRENT_STREAMS limit. */
+ nghttp2_outbound_queue ob_syn;
+ nghttp2_active_outbound_item aob;
+ nghttp2_inbound_frame iframe;
+ nghttp2_hd_deflater hd_deflater;
+ nghttp2_hd_inflater hd_inflater;
+ nghttp2_session_callbacks callbacks;
+ /* Memory allocator */
+ nghttp2_mem mem;
+ /* Base value when we schedule next DATA frame write. This is
+ updated when one frame was written. */
+ uint64_t last_cycle;
+ void *user_data;
+ /* Points to the latest incoming closed stream. NULL if there is no
+ closed stream. Only used when session is initialized as
+ server. */
+ nghttp2_stream *closed_stream_head;
+ /* Points to the oldest incoming closed stream. NULL if there is no
+ closed stream. Only used when session is initialized as
+ server. */
+ nghttp2_stream *closed_stream_tail;
+ /* Points to the latest idle stream. NULL if there is no idle
+ stream. Only used when session is initialized as server .*/
+ nghttp2_stream *idle_stream_head;
+ /* Points to the oldest idle stream. NULL if there is no idle
+ stream. Only used when session is initialized as erver. */
+ nghttp2_stream *idle_stream_tail;
+ /* Queue of In-flight SETTINGS values. SETTINGS bearing ACK is not
+ considered as in-flight. */
+ nghttp2_inflight_settings *inflight_settings_head;
+ /* The number of outgoing streams. This will be capped by
+ remote_settings.max_concurrent_streams. */
+ size_t num_outgoing_streams;
+ /* The number of incoming streams. This will be capped by
+ local_settings.max_concurrent_streams. */
+ size_t num_incoming_streams;
+ /* The number of incoming reserved streams. This is the number of
+ streams in reserved (remote) state. RFC 7540 does not limit this
+ number. nghttp2 offers
+ nghttp2_option_set_max_reserved_remote_streams() to achieve this.
+ If it is used, num_incoming_streams is capped by
+ max_incoming_reserved_streams. Client application should
+ consider to set this because without that server can send
+ arbitrary number of PUSH_PROMISE, and exhaust client's memory. */
+ size_t num_incoming_reserved_streams;
+ /* The maximum number of incoming reserved streams (reserved
+ (remote) state). RST_STREAM will be sent for the pushed stream
+ which exceeds this limit. */
+ size_t max_incoming_reserved_streams;
+ /* The number of closed streams still kept in |streams| hash. The
+ closed streams can be accessed through single linked list
+ |closed_stream_head|. The current implementation only keeps
+ incoming streams and session is initialized as server. */
+ size_t num_closed_streams;
+ /* The number of idle streams kept in |streams| hash. The idle
+ streams can be accessed through doubly linked list
+ |idle_stream_head|. The current implementation only keeps idle
+ streams if session is initialized as server. */
+ size_t num_idle_streams;
+ /* The number of bytes allocated for nvbuf */
+ size_t nvbuflen;
+ /* Counter for detecting flooding in outbound queue */
+ size_t obq_flood_counter_;
+ /* The maximum length of header block to send. Calculated by the
+ same way as nghttp2_hd_deflate_bound() does. */
+ size_t max_send_header_block_length;
+ /* Next Stream ID. Made unsigned int to detect >= (1 << 31). */
+ uint32_t next_stream_id;
+ /* The last stream ID this session initiated. For client session,
+ this is the last stream ID it has sent. For server session, it
+ is the last promised stream ID sent in PUSH_PROMISE. */
+ int32_t last_sent_stream_id;
+ /* The largest stream ID received so far */
+ int32_t last_recv_stream_id;
+ /* The largest stream ID which has been processed in some way. This
+ value will be used as last-stream-id when sending GOAWAY
+ frame. */
+ int32_t last_proc_stream_id;
+ /* Counter of unique ID of PING. Wraps when it exceeds
+ NGHTTP2_MAX_UNIQUE_ID */
+ uint32_t next_unique_id;
+ /* This is the last-stream-ID we have sent in GOAWAY */
+ int32_t local_last_stream_id;
+ /* This is the value in GOAWAY frame received from remote endpoint. */
+ int32_t remote_last_stream_id;
+ /* Current sender window size. This value is computed against the
+ current initial window size of remote endpoint. */
+ int32_t remote_window_size;
+ /* Keep track of the number of bytes received without
+ WINDOW_UPDATE. This could be negative after submitting negative
+ value to WINDOW_UPDATE. */
+ int32_t recv_window_size;
+ /* The number of bytes consumed by the application and now is
+ subject to WINDOW_UPDATE. This is only used when auto
+ WINDOW_UPDATE is turned off. */
+ int32_t consumed_size;
+ /* The amount of recv_window_size cut using submitting negative
+ value to WINDOW_UPDATE */
+ int32_t recv_reduction;
+ /* window size for local flow control. It is initially set to
+ NGHTTP2_INITIAL_CONNECTION_WINDOW_SIZE and could be
+ increased/decreased by submitting WINDOW_UPDATE. See
+ nghttp2_submit_window_update(). */
+ int32_t local_window_size;
+ /* Settings value received from the remote endpoint. We just use ID
+ as index. The index = 0 is unused. */
+ nghttp2_settings_storage remote_settings;
+ /* Settings value of the local endpoint. */
+ nghttp2_settings_storage local_settings;
+ /* Option flags. This is bitwise-OR of 0 or more of nghttp2_optmask. */
+ uint32_t opt_flags;
+ /* Unacked local SETTINGS_MAX_CONCURRENT_STREAMS value. We use this
+ to refuse the incoming stream if it exceeds this value. */
+ uint32_t pending_local_max_concurrent_stream;
+ /* The bitwose OR of zero or more of nghttp2_typemask to indicate
+ that the default handling of extension frame is enabled. */
+ uint32_t builtin_recv_ext_types;
+ /* Unacked local ENABLE_PUSH value. We use this to refuse
+ PUSH_PROMISE before SETTINGS ACK is received. */
+ uint8_t pending_enable_push;
+ /* Nonzero if the session is server side. */
+ uint8_t server;
+ /* Flags indicating GOAWAY is sent and/or recieved. The flags are
+ composed by bitwise OR-ing nghttp2_goaway_flag. */
+ uint8_t goaway_flags;
+ /* This flag is used to reduce excessive queuing of WINDOW_UPDATE to
+ this session. The nonzero does not necessarily mean
+ WINDOW_UPDATE is not queued. */
+ uint8_t window_update_queued;
+ /* Bitfield of extension frame types that application is willing to
+ receive. To designate the bit of given frame type i, use
+ user_recv_ext_types[i / 8] & (1 << (i & 0x7)). First 10 frame
+ types are standard frame types and not used in this bitfield. If
+ bit is set, it indicates that incoming frame with that type is
+ passed to user defined callbacks, otherwise they are ignored. */
+ uint8_t user_recv_ext_types[32];
+};
+
+/* Struct used when updating initial window size of each active
+ stream. */
+typedef struct {
+ nghttp2_session *session;
+ int32_t new_window_size, old_window_size;
+} nghttp2_update_window_size_arg;
+
+typedef struct {
+ nghttp2_session *session;
+ /* linked list of streams to close */
+ nghttp2_stream *head;
+ int32_t last_stream_id;
+ /* nonzero if GOAWAY is sent to peer, which means we are going to
+ close incoming streams. zero if GOAWAY is received from peer and
+ we are going to close outgoing streams. */
+ int incoming;
+} nghttp2_close_stream_on_goaway_arg;
+
+/* TODO stream timeout etc */
+
+/*
+ * Returns nonzero value if |stream_id| is initiated by local
+ * endpoint.
+ */
+int nghttp2_session_is_my_stream_id(nghttp2_session *session,
+ int32_t stream_id);
+
+/*
+ * Adds |item| to the outbound queue in |session|. When this function
+ * succeeds, it takes ownership of |item|. So caller must not free it
+ * on success.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_STREAM_CLOSED
+ * Stream already closed (DATA and PUSH_PROMISE frame only)
+ */
+int nghttp2_session_add_item(nghttp2_session *session,
+ nghttp2_outbound_item *item);
+
+/*
+ * Adds RST_STREAM frame for the stream |stream_id| with the error
+ * code |error_code|. This is a convenient function built on top of
+ * nghttp2_session_add_frame() to add RST_STREAM easily.
+ *
+ * This function simply returns 0 without adding RST_STREAM frame if
+ * given stream is in NGHTTP2_STREAM_CLOSING state, because multiple
+ * RST_STREAM for a stream is redundant.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+int nghttp2_session_add_rst_stream(nghttp2_session *session, int32_t stream_id,
+ uint32_t error_code);
+
+/*
+ * Adds PING frame. This is a convenient functin built on top of
+ * nghttp2_session_add_frame() to add PING easily.
+ *
+ * If the |opaque_data| is not NULL, it must point to 8 bytes memory
+ * region of data. The data pointed by |opaque_data| is copied. It can
+ * be NULL. In this case, 8 bytes NULL is used.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_FLOODED
+ * There are too many items in outbound queue; this only happens
+ * if NGHTTP2_FLAG_ACK is set in |flags|
+ */
+int nghttp2_session_add_ping(nghttp2_session *session, uint8_t flags,
+ const uint8_t *opaque_data);
+
+/*
+ * Adds GOAWAY frame with the last-stream-ID |last_stream_id| and the
+ * error code |error_code|. This is a convenient function built on top
+ * of nghttp2_session_add_frame() to add GOAWAY easily. The
+ * |aux_flags| are bitwise-OR of one or more of
+ * nghttp2_goaway_aux_flag.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_INVALID_ARGUMENT
+ * The |opaque_data_len| is too large.
+ */
+int nghttp2_session_add_goaway(nghttp2_session *session, int32_t last_stream_id,
+ uint32_t error_code, const uint8_t *opaque_data,
+ size_t opaque_data_len, uint8_t aux_flags);
+
+/*
+ * Adds WINDOW_UPDATE frame with stream ID |stream_id| and
+ * window-size-increment |window_size_increment|. This is a convenient
+ * function built on top of nghttp2_session_add_frame() to add
+ * WINDOW_UPDATE easily.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+int nghttp2_session_add_window_update(nghttp2_session *session, uint8_t flags,
+ int32_t stream_id,
+ int32_t window_size_increment);
+
+/*
+ * Adds SETTINGS frame.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_FLOODED
+ * There are too many items in outbound queue; this only happens
+ * if NGHTTP2_FLAG_ACK is set in |flags|
+ */
+int nghttp2_session_add_settings(nghttp2_session *session, uint8_t flags,
+ const nghttp2_settings_entry *iv, size_t niv);
+
+/*
+ * Creates new stream in |session| with stream ID |stream_id|,
+ * priority |pri_spec| and flags |flags|. The |flags| is bitwise OR
+ * of nghttp2_stream_flag. Since this function is called when initial
+ * HEADERS is sent or received, these flags are taken from it. The
+ * state of stream is set to |initial_state|. The |stream_user_data|
+ * is a pointer to the arbitrary user supplied data to be associated
+ * to this stream.
+ *
+ * If |initial_state| is NGHTTP2_STREAM_RESERVED, this function sets
+ * NGHTTP2_STREAM_FLAG_PUSH flag set.
+ *
+ * This function returns a pointer to created new stream object, or
+ * NULL.
+ *
+ * This function adjusts neither the number of closed streams or idle
+ * streams. The caller should manually call
+ * nghttp2_session_adjust_closed_stream() or
+ * nghttp2_session_adjust_idle_stream() respectively.
+ */
+nghttp2_stream *nghttp2_session_open_stream(nghttp2_session *session,
+ int32_t stream_id, uint8_t flags,
+ nghttp2_priority_spec *pri_spec,
+ nghttp2_stream_state initial_state,
+ void *stream_user_data);
+
+/*
+ * Closes stream whose stream ID is |stream_id|. The reason of closure
+ * is indicated by the |error_code|. When closing the stream,
+ * on_stream_close_callback will be called.
+ *
+ * If the session is initialized as server and |stream| is incoming
+ * stream, stream is just marked closed and this function calls
+ * nghttp2_session_keep_closed_stream() with |stream|. Otherwise,
+ * |stream| will be deleted from memory.
+ *
+ * This function returns 0 if it succeeds, or one the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ * NGHTTP2_ERR_INVALID_ARGUMENT
+ * The specified stream does not exist.
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The callback function failed.
+ */
+int nghttp2_session_close_stream(nghttp2_session *session, int32_t stream_id,
+ uint32_t error_code);
+
+/*
+ * Deletes |stream| from memory. After this function returns, stream
+ * cannot be accessed.
+ *
+ * This function returns 0 if it succeeds, or one the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_session_destroy_stream(nghttp2_session *session,
+ nghttp2_stream *stream);
+
+/*
+ * Tries to keep incoming closed stream |stream|. Due to the
+ * limitation of maximum number of streams in memory, |stream| is not
+ * closed and just deleted from memory (see
+ * nghttp2_session_destroy_stream).
+ */
+void nghttp2_session_keep_closed_stream(nghttp2_session *session,
+ nghttp2_stream *stream);
+
+/*
+ * Appends |stream| to linked list |session->idle_stream_head|. We
+ * apply fixed limit for list size. To fit into that limit, one or
+ * more oldest streams are removed from list as necessary.
+ */
+void nghttp2_session_keep_idle_stream(nghttp2_session *session,
+ nghttp2_stream *stream);
+
+/*
+ * Detaches |stream| from idle streams linked list.
+ */
+void nghttp2_session_detach_idle_stream(nghttp2_session *session,
+ nghttp2_stream *stream);
+
+/*
+ * Deletes closed stream to ensure that number of incoming streams
+ * including active and closed is in the maximum number of allowed
+ * stream.
+ *
+ * This function returns 0 if it succeeds, or one the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_session_adjust_closed_stream(nghttp2_session *session);
+
+/*
+ * Deletes idle stream to ensure that number of idle streams is in
+ * certain limit.
+ *
+ * This function returns 0 if it succeeds, or one the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_session_adjust_idle_stream(nghttp2_session *session);
+
+/*
+ * If further receptions and transmissions over the stream |stream_id|
+ * are disallowed, close the stream with error code NGHTTP2_NO_ERROR.
+ *
+ * This function returns 0 if it
+ * succeeds, or one of the following negative error codes:
+ *
+ * NGHTTP2_ERR_INVALID_ARGUMENT
+ * The specified stream does not exist.
+ */
+int nghttp2_session_close_stream_if_shut_rdwr(nghttp2_session *session,
+ nghttp2_stream *stream);
+
+int nghttp2_session_on_request_headers_received(nghttp2_session *session,
+ nghttp2_frame *frame);
+
+int nghttp2_session_on_response_headers_received(nghttp2_session *session,
+ nghttp2_frame *frame,
+ nghttp2_stream *stream);
+
+int nghttp2_session_on_push_response_headers_received(nghttp2_session *session,
+ nghttp2_frame *frame,
+ nghttp2_stream *stream);
+
+/*
+ * Called when HEADERS is received, assuming |frame| is properly
+ * initialized. This function does first validate received frame and
+ * then open stream and call callback functions.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_IGN_HEADER_BLOCK
+ * Frame was rejected and header block must be decoded but
+ * result must be ignored.
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The read_callback failed
+ */
+int nghttp2_session_on_headers_received(nghttp2_session *session,
+ nghttp2_frame *frame,
+ nghttp2_stream *stream);
+
+/*
+ * Called when PRIORITY is received, assuming |frame| is properly
+ * initialized.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The read_callback failed
+ */
+int nghttp2_session_on_priority_received(nghttp2_session *session,
+ nghttp2_frame *frame);
+
+/*
+ * Called when RST_STREAM is received, assuming |frame| is properly
+ * initialized.
+ *
+ * This function returns 0 if it succeeds, or one the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The read_callback failed
+ */
+int nghttp2_session_on_rst_stream_received(nghttp2_session *session,
+ nghttp2_frame *frame);
+
+/*
+ * Called when SETTINGS is received, assuming |frame| is properly
+ * initialized. If |noack| is non-zero, SETTINGS with ACK will not be
+ * submitted. If |frame| has NGHTTP2_FLAG_ACK flag set, no SETTINGS
+ * with ACK will not be submitted regardless of |noack|.
+ *
+ * This function returns 0 if it succeeds, or one the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The read_callback failed
+ * NGHTTP2_ERR_FLOODED
+ * There are too many items in outbound queue, and this is most
+ * likely caused by misbehaviour of peer.
+ */
+int nghttp2_session_on_settings_received(nghttp2_session *session,
+ nghttp2_frame *frame, int noack);
+
+/*
+ * Called when PUSH_PROMISE is received, assuming |frame| is properly
+ * initialized.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_IGN_HEADER_BLOCK
+ * Frame was rejected and header block must be decoded but
+ * result must be ignored.
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The read_callback failed
+ */
+int nghttp2_session_on_push_promise_received(nghttp2_session *session,
+ nghttp2_frame *frame);
+
+/*
+ * Called when PING is received, assuming |frame| is properly
+ * initialized.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The callback function failed.
+ * NGHTTP2_ERR_FLOODED
+ * There are too many items in outbound queue, and this is most
+ * likely caused by misbehaviour of peer.
+ */
+int nghttp2_session_on_ping_received(nghttp2_session *session,
+ nghttp2_frame *frame);
+
+/*
+ * Called when GOAWAY is received, assuming |frame| is properly
+ * initialized.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The callback function failed.
+ */
+int nghttp2_session_on_goaway_received(nghttp2_session *session,
+ nghttp2_frame *frame);
+
+/*
+ * Called when WINDOW_UPDATE is recieved, assuming |frame| is properly
+ * initialized.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The callback function failed.
+ */
+int nghttp2_session_on_window_update_received(nghttp2_session *session,
+ nghttp2_frame *frame);
+
+/*
+ * Called when ALTSVC is recieved, assuming |frame| is properly
+ * initialized.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The callback function failed.
+ */
+int nghttp2_session_on_altsvc_received(nghttp2_session *session,
+ nghttp2_frame *frame);
+
+/*
+ * Called when DATA is received, assuming |frame| is properly
+ * initialized.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The callback function failed.
+ */
+int nghttp2_session_on_data_received(nghttp2_session *session,
+ nghttp2_frame *frame);
+
+/*
+ * Returns nghttp2_stream* object whose stream ID is |stream_id|. It
+ * could be NULL if such stream does not exist. This function returns
+ * NULL if stream is marked as closed.
+ */
+nghttp2_stream *nghttp2_session_get_stream(nghttp2_session *session,
+ int32_t stream_id);
+
+/*
+ * This function behaves like nghttp2_session_get_stream(), but it
+ * returns stream object even if it is marked as closed or in
+ * NGHTTP2_STREAM_IDLE state.
+ */
+nghttp2_stream *nghttp2_session_get_stream_raw(nghttp2_session *session,
+ int32_t stream_id);
+
+/*
+ * Packs DATA frame |frame| in wire frame format and stores it in
+ * |bufs|. Payload will be read using |aux_data->data_prd|. The
+ * length of payload is at most |datamax| bytes.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_DEFERRED
+ * The DATA frame is postponed.
+ * NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE
+ * The read_callback failed (stream error).
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The read_callback failed (session error).
+ */
+int nghttp2_session_pack_data(nghttp2_session *session, nghttp2_bufs *bufs,
+ size_t datamax, nghttp2_frame *frame,
+ nghttp2_data_aux_data *aux_data,
+ nghttp2_stream *stream);
+
+/*
+ * Pops and returns next item to send. If there is no such item,
+ * returns NULL. This function takes into account max concurrent
+ * streams. That means if session->ob_syn has item and max concurrent
+ * streams is reached, the even if other queues contain items, then
+ * this function returns NULL.
+ */
+nghttp2_outbound_item *
+nghttp2_session_pop_next_ob_item(nghttp2_session *session);
+
+/*
+ * Returns next item to send. If there is no such item, this function
+ * returns NULL. This function takes into account max concurrent
+ * streams. That means if session->ob_syn has item and max concurrent
+ * streams is reached, the even if other queues contain items, then
+ * this function returns NULL.
+ */
+nghttp2_outbound_item *
+nghttp2_session_get_next_ob_item(nghttp2_session *session);
+
+/*
+ * Updates local settings with the |iv|. The number of elements in the
+ * array pointed by the |iv| is given by the |niv|. This function
+ * assumes that the all settings_id member in |iv| are in range 1 to
+ * NGHTTP2_SETTINGS_MAX, inclusive.
+ *
+ * While updating individual stream's local window size, if the window
+ * size becomes strictly larger than NGHTTP2_MAX_WINDOW_SIZE,
+ * RST_STREAM is issued against such a stream.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_session_update_local_settings(nghttp2_session *session,
+ nghttp2_settings_entry *iv,
+ size_t niv);
+
+/*
+ * Re-prioritize |stream|. The new priority specification is
+ * |pri_spec|. Caller must ensure that stream->hd.stream_id !=
+ * pri_spec->stream_id.
+ *
+ * This function does not adjust the number of idle streams. The
+ * caller should call nghttp2_session_adjust_idle_stream() later.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_session_reprioritize_stream(nghttp2_session *session,
+ nghttp2_stream *stream,
+ const nghttp2_priority_spec *pri_spec);
+
+/*
+ * Terminates current |session| with the |error_code|. The |reason|
+ * is NULL-terminated debug string.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_INVALID_ARGUMENT
+ * The |reason| is too long.
+ */
+int nghttp2_session_terminate_session_with_reason(nghttp2_session *session,
+ uint32_t error_code,
+ const char *reason);
+
+#endif /* NGHTTP2_SESSION_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_STREAM_H
+#define NGHTTP2_STREAM_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+#include "nghttp2_outbound_item.h"
+#include "nghttp2_map.h"
+#include "nghttp2_pq.h"
+#include "nghttp2_int.h"
+
+/*
+ * If local peer is stream initiator:
+ * NGHTTP2_STREAM_OPENING : upon sending request HEADERS
+ * NGHTTP2_STREAM_OPENED : upon receiving response HEADERS
+ * NGHTTP2_STREAM_CLOSING : upon queuing RST_STREAM
+ *
+ * If remote peer is stream initiator:
+ * NGHTTP2_STREAM_OPENING : upon receiving request HEADERS
+ * NGHTTP2_STREAM_OPENED : upon sending response HEADERS
+ * NGHTTP2_STREAM_CLOSING : upon queuing RST_STREAM
+ */
+typedef enum {
+ /* Initial state */
+ NGHTTP2_STREAM_INITIAL,
+ /* For stream initiator: request HEADERS has been sent, but response
+ HEADERS has not been received yet. For receiver: request HEADERS
+ has been received, but it does not send response HEADERS yet. */
+ NGHTTP2_STREAM_OPENING,
+ /* For stream initiator: response HEADERS is received. For receiver:
+ response HEADERS is sent. */
+ NGHTTP2_STREAM_OPENED,
+ /* RST_STREAM is received, but somehow we need to keep stream in
+ memory. */
+ NGHTTP2_STREAM_CLOSING,
+ /* PUSH_PROMISE is received or sent */
+ NGHTTP2_STREAM_RESERVED,
+ /* Stream is created in this state if it is used as anchor in
+ dependency tree. */
+ NGHTTP2_STREAM_IDLE
+} nghttp2_stream_state;
+
+typedef enum {
+ NGHTTP2_SHUT_NONE = 0,
+ /* Indicates further receptions will be disallowed. */
+ NGHTTP2_SHUT_RD = 0x01,
+ /* Indicates further transmissions will be disallowed. */
+ NGHTTP2_SHUT_WR = 0x02,
+ /* Indicates both further receptions and transmissions will be
+ disallowed. */
+ NGHTTP2_SHUT_RDWR = NGHTTP2_SHUT_RD | NGHTTP2_SHUT_WR
+} nghttp2_shut_flag;
+
+typedef enum {
+ NGHTTP2_STREAM_FLAG_NONE = 0,
+ /* Indicates that this stream is pushed stream and not opened
+ yet. */
+ NGHTTP2_STREAM_FLAG_PUSH = 0x01,
+ /* Indicates that this stream was closed */
+ NGHTTP2_STREAM_FLAG_CLOSED = 0x02,
+ /* Indicates the item is deferred due to flow control. */
+ NGHTTP2_STREAM_FLAG_DEFERRED_FLOW_CONTROL = 0x04,
+ /* Indicates the item is deferred by user callback */
+ NGHTTP2_STREAM_FLAG_DEFERRED_USER = 0x08,
+ /* bitwise OR of NGHTTP2_STREAM_FLAG_DEFERRED_FLOW_CONTROL and
+ NGHTTP2_STREAM_FLAG_DEFERRED_USER. */
+ NGHTTP2_STREAM_FLAG_DEFERRED_ALL = 0x0c
+
+} nghttp2_stream_flag;
+
+/* HTTP related flags to enforce HTTP semantics */
+typedef enum {
+ NGHTTP2_HTTP_FLAG_NONE = 0,
+ /* header field seen so far */
+ NGHTTP2_HTTP_FLAG__AUTHORITY = 1,
+ NGHTTP2_HTTP_FLAG__PATH = 1 << 1,
+ NGHTTP2_HTTP_FLAG__METHOD = 1 << 2,
+ NGHTTP2_HTTP_FLAG__SCHEME = 1 << 3,
+ /* host is not pseudo header, but we require either host or
+ :authority */
+ NGHTTP2_HTTP_FLAG_HOST = 1 << 4,
+ NGHTTP2_HTTP_FLAG__STATUS = 1 << 5,
+ /* required header fields for HTTP request except for CONNECT
+ method. */
+ NGHTTP2_HTTP_FLAG_REQ_HEADERS = NGHTTP2_HTTP_FLAG__METHOD |
+ NGHTTP2_HTTP_FLAG__PATH |
+ NGHTTP2_HTTP_FLAG__SCHEME,
+ NGHTTP2_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED = 1 << 6,
+ /* HTTP method flags */
+ NGHTTP2_HTTP_FLAG_METH_CONNECT = 1 << 7,
+ NGHTTP2_HTTP_FLAG_METH_HEAD = 1 << 8,
+ NGHTTP2_HTTP_FLAG_METH_OPTIONS = 1 << 9,
+ NGHTTP2_HTTP_FLAG_METH_UPGRADE_WORKAROUND = 1 << 10,
+ NGHTTP2_HTTP_FLAG_METH_ALL = NGHTTP2_HTTP_FLAG_METH_CONNECT |
+ NGHTTP2_HTTP_FLAG_METH_HEAD |
+ NGHTTP2_HTTP_FLAG_METH_OPTIONS |
+ NGHTTP2_HTTP_FLAG_METH_UPGRADE_WORKAROUND,
+ /* :path category */
+ /* path starts with "/" */
+ NGHTTP2_HTTP_FLAG_PATH_REGULAR = 1 << 11,
+ /* path "*" */
+ NGHTTP2_HTTP_FLAG_PATH_ASTERISK = 1 << 12,
+ /* scheme */
+ /* "http" or "https" scheme */
+ NGHTTP2_HTTP_FLAG_SCHEME_HTTP = 1 << 13,
+ /* set if final response is expected */
+ NGHTTP2_HTTP_FLAG_EXPECT_FINAL_RESPONSE = 1 << 14
+} nghttp2_http_flag;
+
+struct nghttp2_stream {
+ /* Intrusive Map */
+ nghttp2_map_entry map_entry;
+ /* Entry for dep_prev->obq */
+ nghttp2_pq_entry pq_entry;
+ /* Priority Queue storing direct descendant (nghttp2_stream). Only
+ streams which itself has some data to send, or has a descendant
+ which has some data to sent. */
+ nghttp2_pq obq;
+ /* Content-Length of request/response body. -1 if unknown. */
+ int64_t content_length;
+ /* Received body so far */
+ int64_t recv_content_length;
+ /* Base last_cycle for direct descendent streams. */
+ uint32_t descendant_last_cycle;
+ /* Next scheduled time to sent item */
+ uint32_t cycle;
+ /* Next seq used for direct descendant streams */
+ uint64_t descendant_next_seq;
+ /* Secondary key for prioritization to break a tie for cycle. This
+ value is monotonically increased for single parent stream. */
+ uint64_t seq;
+ /* pointers to form dependency tree. If multiple streams depend on
+ a stream, only one stream (left most) has non-NULL dep_prev which
+ points to the stream it depends on. The remaining streams are
+ linked using sib_prev and sib_next. The stream which has
+ non-NULL dep_prev always NULL sib_prev. The right most stream
+ has NULL sib_next. If this stream is a root of dependency tree,
+ dep_prev and sib_prev are NULL. */
+ nghttp2_stream *dep_prev, *dep_next;
+ nghttp2_stream *sib_prev, *sib_next;
+ /* When stream is kept after closure, it may be kept in doubly
+ linked list pointed by nghttp2_session closed_stream_head.
+ closed_next points to the next stream object if it is the element
+ of the list. */
+ nghttp2_stream *closed_prev, *closed_next;
+ /* The arbitrary data provided by user for this stream. */
+ void *stream_user_data;
+ /* Item to send */
+ nghttp2_outbound_item *item;
+ /* Last written length of frame payload */
+ size_t last_writelen;
+ /* stream ID */
+ int32_t stream_id;
+ /* Current remote window size. This value is computed against the
+ current initial window size of remote endpoint. */
+ int32_t remote_window_size;
+ /* Keep track of the number of bytes received without
+ WINDOW_UPDATE. This could be negative after submitting negative
+ value to WINDOW_UPDATE */
+ int32_t recv_window_size;
+ /* The number of bytes consumed by the application and now is
+ subject to WINDOW_UPDATE. This is only used when auto
+ WINDOW_UPDATE is turned off. */
+ int32_t consumed_size;
+ /* The amount of recv_window_size cut using submitting negative
+ value to WINDOW_UPDATE */
+ int32_t recv_reduction;
+ /* window size for local flow control. It is initially set to
+ NGHTTP2_INITIAL_WINDOW_SIZE and could be increased/decreased by
+ submitting WINDOW_UPDATE. See nghttp2_submit_window_update(). */
+ int32_t local_window_size;
+ /* weight of this stream */
+ int32_t weight;
+ /* This is unpaid penalty (offset) when calculating cycle. */
+ uint32_t pending_penalty;
+ /* sum of weight of direct descendants */
+ int32_t sum_dep_weight;
+ nghttp2_stream_state state;
+ /* status code from remote server */
+ int16_t status_code;
+ /* Bitwise OR of zero or more nghttp2_http_flag values */
+ uint16_t http_flags;
+ /* This is bitwise-OR of 0 or more of nghttp2_stream_flag. */
+ uint8_t flags;
+ /* Bitwise OR of zero or more nghttp2_shut_flag values */
+ uint8_t shut_flags;
+ /* Nonzero if this stream has been queued to stream pointed by
+ dep_prev. We maintain the invariant that if a stream is queued,
+ then its ancestors, except for root, are also queued. This
+ invariant may break in fatal error condition. */
+ uint8_t queued;
+ /* This flag is used to reduce excessive queuing of WINDOW_UPDATE to
+ this stream. The nonzero does not necessarily mean WINDOW_UPDATE
+ is not queued. */
+ uint8_t window_update_queued;
+};
+
+void nghttp2_stream_init(nghttp2_stream *stream, int32_t stream_id,
+ uint8_t flags, nghttp2_stream_state initial_state,
+ int32_t weight, int32_t remote_initial_window_size,
+ int32_t local_initial_window_size,
+ void *stream_user_data, nghttp2_mem *mem);
+
+void nghttp2_stream_free(nghttp2_stream *stream);
+
+/*
+ * Disallow either further receptions or transmissions, or both.
+ * |flag| is bitwise OR of one or more of nghttp2_shut_flag.
+ */
+void nghttp2_stream_shutdown(nghttp2_stream *stream, nghttp2_shut_flag flag);
+
+/*
+ * Defer |stream->item|. We won't call this function in the situation
+ * where |stream->item| == NULL. The |flags| is bitwise OR of zero or
+ * more of NGHTTP2_STREAM_FLAG_DEFERRED_USER and
+ * NGHTTP2_STREAM_FLAG_DEFERRED_FLOW_CONTROL. The |flags| indicates
+ * the reason of this action.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_stream_defer_item(nghttp2_stream *stream, uint8_t flags);
+
+/*
+ * Put back deferred data in this stream to active state. The |flags|
+ * are one or more of bitwise OR of the following values:
+ * NGHTTP2_STREAM_FLAG_DEFERRED_USER and
+ * NGHTTP2_STREAM_FLAG_DEFERRED_FLOW_CONTROL and given masks are
+ * cleared if they are set. So even if this function is called, if
+ * one of flag is still set, data does not become active.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_stream_resume_deferred_item(nghttp2_stream *stream, uint8_t flags);
+
+/*
+ * Returns nonzero if item is deferred by whatever reason.
+ */
+int nghttp2_stream_check_deferred_item(nghttp2_stream *stream);
+
+/*
+ * Returns nonzero if item is deferred by flow control.
+ */
+int nghttp2_stream_check_deferred_by_flow_control(nghttp2_stream *stream);
+
+/*
+ * Updates the remote window size with the new value
+ * |new_initial_window_size|. The |old_initial_window_size| is used to
+ * calculate the current window size.
+ *
+ * This function returns 0 if it succeeds or -1. The failure is due to
+ * overflow.
+ */
+int nghttp2_stream_update_remote_initial_window_size(
+ nghttp2_stream *stream, int32_t new_initial_window_size,
+ int32_t old_initial_window_size);
+
+/*
+ * Updates the local window size with the new value
+ * |new_initial_window_size|. The |old_initial_window_size| is used to
+ * calculate the current window size.
+ *
+ * This function returns 0 if it succeeds or -1. The failure is due to
+ * overflow.
+ */
+int nghttp2_stream_update_local_initial_window_size(
+ nghttp2_stream *stream, int32_t new_initial_window_size,
+ int32_t old_initial_window_size);
+
+/*
+ * Call this function if promised stream |stream| is replied with
+ * HEADERS. This function makes the state of the |stream| to
+ * NGHTTP2_STREAM_OPENED.
+ */
+void nghttp2_stream_promise_fulfilled(nghttp2_stream *stream);
+
+/*
+ * Returns nonzero if |target| is an ancestor of |stream|.
+ */
+int nghttp2_stream_dep_find_ancestor(nghttp2_stream *stream,
+ nghttp2_stream *target);
+
+/*
+ * Computes distributed weight of a stream of the |weight| under the
+ * |stream| if |stream| is removed from a dependency tree.
+ */
+int32_t nghttp2_stream_dep_distributed_weight(nghttp2_stream *stream,
+ int32_t weight);
+
+/*
+ * Makes the |stream| depend on the |dep_stream|. This dependency is
+ * exclusive. All existing direct descendants of |dep_stream| become
+ * the descendants of the |stream|. This function assumes
+ * |stream->item| is NULL.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_stream_dep_insert(nghttp2_stream *dep_stream,
+ nghttp2_stream *stream);
+
+/*
+ * Makes the |stream| depend on the |dep_stream|. This dependency is
+ * not exclusive. This function assumes |stream->item| is NULL.
+ */
+void nghttp2_stream_dep_add(nghttp2_stream *dep_stream, nghttp2_stream *stream);
+
+/*
+ * Removes the |stream| from the current dependency tree. This
+ * function assumes |stream->item| is NULL.
+ */
+int nghttp2_stream_dep_remove(nghttp2_stream *stream);
+
+/*
+ * Attaches |item| to |stream|.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_stream_attach_item(nghttp2_stream *stream,
+ nghttp2_outbound_item *item);
+
+/*
+ * Detaches |stream->item|. This function does not free
+ * |stream->item|. The caller must free it.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_stream_detach_item(nghttp2_stream *stream);
+
+/*
+ * Makes the |stream| depend on the |dep_stream|. This dependency is
+ * exclusive.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_stream_dep_insert_subtree(nghttp2_stream *dep_stream,
+ nghttp2_stream *stream);
+
+/*
+ * Makes the |stream| depend on the |dep_stream|. This dependency is
+ * not exclusive.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_stream_dep_add_subtree(nghttp2_stream *dep_stream,
+ nghttp2_stream *stream);
+
+/*
+ * Removes subtree whose root stream is |stream|. The
+ * effective_weight of streams in removed subtree is not updated.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+void nghttp2_stream_dep_remove_subtree(nghttp2_stream *stream);
+
+/*
+ * Returns nonzero if |stream| is in any dependency tree.
+ */
+int nghttp2_stream_in_dep_tree(nghttp2_stream *stream);
+
+/*
+ * Schedules transmission of |stream|'s item, assuming stream->item is
+ * attached, and stream->last_writelen was updated.
+ */
+void nghttp2_stream_reschedule(nghttp2_stream *stream);
+
+/*
+ * Changes |stream|'s weight to |weight|. If |stream| is queued, it
+ * will be rescheduled based on new weight.
+ */
+void nghttp2_stream_change_weight(nghttp2_stream *stream, int32_t weight);
+
+/*
+ * Returns a stream which has highest priority, updating
+ * descendant_last_cycle of selected stream's ancestors.
+ */
+nghttp2_outbound_item *
+nghttp2_stream_next_outbound_item(nghttp2_stream *stream);
+
+#endif /* NGHTTP2_STREAM */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef NGHTTP2_SUBMIT_H
+#define NGHTTP2_SUBMIT_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+
+#endif /* NGHTTP2_SUBMIT_H */
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2014 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_buf.h"
+
+#include <stdio.h>
+
+#include "nghttp2_helper.h"
+
+void nghttp2_buf_init(nghttp2_buf *buf) {
+ buf->begin = NULL;
+ buf->end = NULL;
+ buf->pos = NULL;
+ buf->last = NULL;
+ buf->mark = NULL;
+}
+
+int nghttp2_buf_init2(nghttp2_buf *buf, size_t initial, nghttp2_mem *mem) {
+ nghttp2_buf_init(buf);
+ return nghttp2_buf_reserve(buf, initial, mem);
+}
+
+void nghttp2_buf_free(nghttp2_buf *buf, nghttp2_mem *mem) {
+ if (buf == NULL) {
+ return;
+ }
+
+ nghttp2_mem_free(mem, buf->begin);
+ buf->begin = NULL;
+}
+
+int nghttp2_buf_reserve(nghttp2_buf *buf, size_t new_cap, nghttp2_mem *mem) {
+ uint8_t *ptr;
+ size_t cap;
+
+ cap = nghttp2_buf_cap(buf);
+
+ if (cap >= new_cap) {
+ return 0;
+ }
+
+ new_cap = nghttp2_max(new_cap, cap * 2);
+
+ ptr = nghttp2_mem_realloc(mem, buf->begin, new_cap);
+ if (ptr == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ buf->pos = ptr + (buf->pos - buf->begin);
+ buf->last = ptr + (buf->last - buf->begin);
+ buf->mark = ptr + (buf->mark - buf->begin);
+ buf->begin = ptr;
+ buf->end = ptr + new_cap;
+
+ return 0;
+}
+
+void nghttp2_buf_reset(nghttp2_buf *buf) {
+ buf->pos = buf->last = buf->mark = buf->begin;
+}
+
+void nghttp2_buf_wrap_init(nghttp2_buf *buf, uint8_t *begin, size_t len) {
+ buf->begin = buf->pos = buf->last = buf->mark = begin;
+ buf->end = begin + len;
+}
+
+static int buf_chain_new(nghttp2_buf_chain **chain, size_t chunk_length,
+ nghttp2_mem *mem) {
+ int rv;
+
+ *chain = nghttp2_mem_malloc(mem, sizeof(nghttp2_buf_chain));
+ if (*chain == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ (*chain)->next = NULL;
+
+ rv = nghttp2_buf_init2(&(*chain)->buf, chunk_length, mem);
+ if (rv != 0) {
+ nghttp2_mem_free(mem, *chain);
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ return 0;
+}
+
+static void buf_chain_del(nghttp2_buf_chain *chain, nghttp2_mem *mem) {
+ nghttp2_buf_free(&chain->buf, mem);
+ nghttp2_mem_free(mem, chain);
+}
+
+int nghttp2_bufs_init(nghttp2_bufs *bufs, size_t chunk_length, size_t max_chunk,
+ nghttp2_mem *mem) {
+ return nghttp2_bufs_init2(bufs, chunk_length, max_chunk, 0, mem);
+}
+
+int nghttp2_bufs_init2(nghttp2_bufs *bufs, size_t chunk_length,
+ size_t max_chunk, size_t offset, nghttp2_mem *mem) {
+ return nghttp2_bufs_init3(bufs, chunk_length, max_chunk, max_chunk, offset,
+ mem);
+}
+
+int nghttp2_bufs_init3(nghttp2_bufs *bufs, size_t chunk_length,
+ size_t max_chunk, size_t chunk_keep, size_t offset,
+ nghttp2_mem *mem) {
+ int rv;
+ nghttp2_buf_chain *chain;
+
+ if (chunk_keep == 0 || max_chunk < chunk_keep || chunk_length < offset) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ rv = buf_chain_new(&chain, chunk_length, mem);
+ if (rv != 0) {
+ return rv;
+ }
+
+ bufs->mem = mem;
+ bufs->offset = offset;
+
+ bufs->head = chain;
+ bufs->cur = bufs->head;
+
+ nghttp2_buf_shift_right(&bufs->cur->buf, offset);
+
+ bufs->chunk_length = chunk_length;
+ bufs->chunk_used = 1;
+ bufs->max_chunk = max_chunk;
+ bufs->chunk_keep = chunk_keep;
+
+ return 0;
+}
+
+int nghttp2_bufs_realloc(nghttp2_bufs *bufs, size_t chunk_length) {
+ int rv;
+ nghttp2_buf_chain *chain;
+
+ if (chunk_length < bufs->offset) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ rv = buf_chain_new(&chain, chunk_length, bufs->mem);
+ if (rv != 0) {
+ return rv;
+ }
+
+ nghttp2_bufs_free(bufs);
+
+ bufs->head = chain;
+ bufs->cur = bufs->head;
+
+ nghttp2_buf_shift_right(&bufs->cur->buf, bufs->offset);
+
+ bufs->chunk_length = chunk_length;
+ bufs->chunk_used = 1;
+
+ return 0;
+}
+
+void nghttp2_bufs_free(nghttp2_bufs *bufs) {
+ nghttp2_buf_chain *chain, *next_chain;
+
+ if (bufs == NULL) {
+ return;
+ }
+
+ for (chain = bufs->head; chain;) {
+ next_chain = chain->next;
+
+ buf_chain_del(chain, bufs->mem);
+
+ chain = next_chain;
+ }
+
+ bufs->head = NULL;
+}
+
+int nghttp2_bufs_wrap_init(nghttp2_bufs *bufs, uint8_t *begin, size_t len,
+ nghttp2_mem *mem) {
+ nghttp2_buf_chain *chain;
+
+ chain = nghttp2_mem_malloc(mem, sizeof(nghttp2_buf_chain));
+ if (chain == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ chain->next = NULL;
+
+ nghttp2_buf_wrap_init(&chain->buf, begin, len);
+
+ bufs->mem = mem;
+ bufs->offset = 0;
+
+ bufs->head = chain;
+ bufs->cur = bufs->head;
+
+ bufs->chunk_length = len;
+ bufs->chunk_used = 1;
+ bufs->max_chunk = 1;
+ bufs->chunk_keep = 1;
+
+ return 0;
+}
+
+void nghttp2_bufs_wrap_free(nghttp2_bufs *bufs) {
+ if (bufs == NULL) {
+ return;
+ }
+
+ nghttp2_mem_free(bufs->mem, bufs->head);
+ bufs->head = NULL;
+}
+
+void nghttp2_bufs_seek_last_present(nghttp2_bufs *bufs) {
+ nghttp2_buf_chain *ci;
+
+ for (ci = bufs->cur; ci; ci = ci->next) {
+ if (nghttp2_buf_len(&ci->buf) == 0) {
+ return;
+ } else {
+ bufs->cur = ci;
+ }
+ }
+}
+
+size_t nghttp2_bufs_len(nghttp2_bufs *bufs) {
+ nghttp2_buf_chain *ci;
+ size_t len;
+
+ len = 0;
+ for (ci = bufs->head; ci; ci = ci->next) {
+ len += nghttp2_buf_len(&ci->buf);
+ }
+
+ return len;
+}
+
+static size_t bufs_avail(nghttp2_bufs *bufs) {
+ return nghttp2_buf_avail(&bufs->cur->buf) +
+ (bufs->chunk_length - bufs->offset) *
+ (bufs->max_chunk - bufs->chunk_used);
+}
+
+static int bufs_alloc_chain(nghttp2_bufs *bufs) {
+ int rv;
+ nghttp2_buf_chain *chain;
+
+ if (bufs->cur->next) {
+ bufs->cur = bufs->cur->next;
+
+ return 0;
+ }
+
+ if (bufs->max_chunk == bufs->chunk_used) {
+ return NGHTTP2_ERR_BUFFER_ERROR;
+ }
+
+ rv = buf_chain_new(&chain, bufs->chunk_length, bufs->mem);
+ if (rv != 0) {
+ return rv;
+ }
+
+ DEBUGF(fprintf(stderr,
+ "new buffer %zu bytes allocated for bufs %p, used %zu\n",
+ bufs->chunk_length, bufs, bufs->chunk_used));
+
+ ++bufs->chunk_used;
+
+ bufs->cur->next = chain;
+ bufs->cur = chain;
+
+ nghttp2_buf_shift_right(&bufs->cur->buf, bufs->offset);
+
+ return 0;
+}
+
+int nghttp2_bufs_add(nghttp2_bufs *bufs, const void *data, size_t len) {
+ int rv;
+ size_t nwrite;
+ nghttp2_buf *buf;
+ const uint8_t *p;
+
+ if (bufs_avail(bufs) < len) {
+ return NGHTTP2_ERR_BUFFER_ERROR;
+ }
+
+ p = data;
+
+ while (len) {
+ buf = &bufs->cur->buf;
+
+ nwrite = nghttp2_min(nghttp2_buf_avail(buf), len);
+ if (nwrite == 0) {
+ rv = bufs_alloc_chain(bufs);
+ if (rv != 0) {
+ return rv;
+ }
+ continue;
+ }
+
+ buf->last = nghttp2_cpymem(buf->last, p, nwrite);
+ p += nwrite;
+ len -= nwrite;
+ }
+
+ return 0;
+}
+
+static int bufs_ensure_addb(nghttp2_bufs *bufs) {
+ int rv;
+ nghttp2_buf *buf;
+
+ buf = &bufs->cur->buf;
+
+ if (nghttp2_buf_avail(buf) > 0) {
+ return 0;
+ }
+
+ rv = bufs_alloc_chain(bufs);
+ if (rv != 0) {
+ return rv;
+ }
+
+ return 0;
+}
+
+int nghttp2_bufs_addb(nghttp2_bufs *bufs, uint8_t b) {
+ int rv;
+
+ rv = bufs_ensure_addb(bufs);
+ if (rv != 0) {
+ return rv;
+ }
+
+ *bufs->cur->buf.last++ = b;
+
+ return 0;
+}
+
+int nghttp2_bufs_addb_hold(nghttp2_bufs *bufs, uint8_t b) {
+ int rv;
+
+ rv = bufs_ensure_addb(bufs);
+ if (rv != 0) {
+ return rv;
+ }
+
+ *bufs->cur->buf.last = b;
+
+ return 0;
+}
+
+int nghttp2_bufs_orb(nghttp2_bufs *bufs, uint8_t b) {
+ int rv;
+
+ rv = bufs_ensure_addb(bufs);
+ if (rv != 0) {
+ return rv;
+ }
+
+ *bufs->cur->buf.last++ |= b;
+
+ return 0;
+}
+
+int nghttp2_bufs_orb_hold(nghttp2_bufs *bufs, uint8_t b) {
+ int rv;
+
+ rv = bufs_ensure_addb(bufs);
+ if (rv != 0) {
+ return rv;
+ }
+
+ *bufs->cur->buf.last |= b;
+
+ return 0;
+}
+
+ssize_t nghttp2_bufs_remove(nghttp2_bufs *bufs, uint8_t **out) {
+ size_t len;
+ nghttp2_buf_chain *chain;
+ nghttp2_buf *buf;
+ uint8_t *res;
+ nghttp2_buf resbuf;
+
+ len = 0;
+
+ for (chain = bufs->head; chain; chain = chain->next) {
+ len += nghttp2_buf_len(&chain->buf);
+ }
+
+ if (len == 0) {
+ res = NULL;
+ return 0;
+ }
+
+ res = nghttp2_mem_malloc(bufs->mem, len);
+ if (res == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ nghttp2_buf_wrap_init(&resbuf, res, len);
+
+ for (chain = bufs->head; chain; chain = chain->next) {
+ buf = &chain->buf;
+ resbuf.last = nghttp2_cpymem(resbuf.last, buf->pos, nghttp2_buf_len(buf));
+ }
+
+ *out = res;
+
+ return (ssize_t)len;
+}
+
+size_t nghttp2_bufs_remove_copy(nghttp2_bufs *bufs, uint8_t *out) {
+ size_t len;
+ nghttp2_buf_chain *chain;
+ nghttp2_buf *buf;
+ nghttp2_buf resbuf;
+
+ len = nghttp2_bufs_len(bufs);
+
+ nghttp2_buf_wrap_init(&resbuf, out, len);
+
+ for (chain = bufs->head; chain; chain = chain->next) {
+ buf = &chain->buf;
+ resbuf.last = nghttp2_cpymem(resbuf.last, buf->pos, nghttp2_buf_len(buf));
+ }
+
+ return len;
+}
+
+void nghttp2_bufs_reset(nghttp2_bufs *bufs) {
+ nghttp2_buf_chain *chain, *ci;
+ size_t k;
+
+ k = bufs->chunk_keep;
+
+ for (ci = bufs->head; ci; ci = ci->next) {
+ nghttp2_buf_reset(&ci->buf);
+ nghttp2_buf_shift_right(&ci->buf, bufs->offset);
+
+ if (--k == 0) {
+ break;
+ }
+ }
+
+ if (ci) {
+ chain = ci->next;
+ ci->next = NULL;
+
+ for (ci = chain; ci;) {
+ chain = ci->next;
+
+ buf_chain_del(ci, bufs->mem);
+
+ ci = chain;
+ }
+
+ bufs->chunk_used = bufs->chunk_keep;
+ }
+
+ bufs->cur = bufs->head;
+}
+
+int nghttp2_bufs_advance(nghttp2_bufs *bufs) { return bufs_alloc_chain(bufs); }
+
+int nghttp2_bufs_next_present(nghttp2_bufs *bufs) {
+ nghttp2_buf_chain *chain;
+
+ chain = bufs->cur->next;
+
+ return chain && nghttp2_buf_len(&chain->buf);
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2014 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_callbacks.h"
+
+#include <stdlib.h>
+
+int nghttp2_session_callbacks_new(nghttp2_session_callbacks **callbacks_ptr) {
+ *callbacks_ptr = calloc(1, sizeof(nghttp2_session_callbacks));
+
+ if (*callbacks_ptr == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ return 0;
+}
+
+void nghttp2_session_callbacks_del(nghttp2_session_callbacks *callbacks) {
+ free(callbacks);
+}
+
+void nghttp2_session_callbacks_set_send_callback(
+ nghttp2_session_callbacks *cbs, nghttp2_send_callback send_callback) {
+ cbs->send_callback = send_callback;
+}
+
+void nghttp2_session_callbacks_set_recv_callback(
+ nghttp2_session_callbacks *cbs, nghttp2_recv_callback recv_callback) {
+ cbs->recv_callback = recv_callback;
+}
+
+void nghttp2_session_callbacks_set_on_frame_recv_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_frame_recv_callback on_frame_recv_callback) {
+ cbs->on_frame_recv_callback = on_frame_recv_callback;
+}
+
+void nghttp2_session_callbacks_set_on_invalid_frame_recv_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_invalid_frame_recv_callback on_invalid_frame_recv_callback) {
+ cbs->on_invalid_frame_recv_callback = on_invalid_frame_recv_callback;
+}
+
+void nghttp2_session_callbacks_set_on_data_chunk_recv_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_data_chunk_recv_callback on_data_chunk_recv_callback) {
+ cbs->on_data_chunk_recv_callback = on_data_chunk_recv_callback;
+}
+
+void nghttp2_session_callbacks_set_before_frame_send_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_before_frame_send_callback before_frame_send_callback) {
+ cbs->before_frame_send_callback = before_frame_send_callback;
+}
+
+void nghttp2_session_callbacks_set_on_frame_send_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_frame_send_callback on_frame_send_callback) {
+ cbs->on_frame_send_callback = on_frame_send_callback;
+}
+
+void nghttp2_session_callbacks_set_on_frame_not_send_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_frame_not_send_callback on_frame_not_send_callback) {
+ cbs->on_frame_not_send_callback = on_frame_not_send_callback;
+}
+
+void nghttp2_session_callbacks_set_on_stream_close_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_stream_close_callback on_stream_close_callback) {
+ cbs->on_stream_close_callback = on_stream_close_callback;
+}
+
+void nghttp2_session_callbacks_set_on_begin_headers_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_begin_headers_callback on_begin_headers_callback) {
+ cbs->on_begin_headers_callback = on_begin_headers_callback;
+}
+
+void nghttp2_session_callbacks_set_on_header_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_header_callback on_header_callback) {
+ cbs->on_header_callback = on_header_callback;
+}
+
+void nghttp2_session_callbacks_set_on_header_callback2(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_header_callback2 on_header_callback2) {
+ cbs->on_header_callback2 = on_header_callback2;
+}
+
+void nghttp2_session_callbacks_set_select_padding_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_select_padding_callback select_padding_callback) {
+ cbs->select_padding_callback = select_padding_callback;
+}
+
+void nghttp2_session_callbacks_set_data_source_read_length_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_data_source_read_length_callback data_source_read_length_callback) {
+ cbs->read_length_callback = data_source_read_length_callback;
+}
+
+void nghttp2_session_callbacks_set_on_begin_frame_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_begin_frame_callback on_begin_frame_callback) {
+ cbs->on_begin_frame_callback = on_begin_frame_callback;
+}
+
+void nghttp2_session_callbacks_set_send_data_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_send_data_callback send_data_callback) {
+ cbs->send_data_callback = send_data_callback;
+}
+
+void nghttp2_session_callbacks_set_pack_extension_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_pack_extension_callback pack_extension_callback) {
+ cbs->pack_extension_callback = pack_extension_callback;
+}
+
+void nghttp2_session_callbacks_set_unpack_extension_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_unpack_extension_callback unpack_extension_callback) {
+ cbs->unpack_extension_callback = unpack_extension_callback;
+}
+
+void nghttp2_session_callbacks_set_on_extension_chunk_recv_callback(
+ nghttp2_session_callbacks *cbs,
+ nghttp2_on_extension_chunk_recv_callback on_extension_chunk_recv_callback) {
+ cbs->on_extension_chunk_recv_callback = on_extension_chunk_recv_callback;
+}
+
+void nghttp2_session_callbacks_set_error_callback(
+ nghttp2_session_callbacks *cbs, nghttp2_error_callback error_callback) {
+ cbs->error_callback = error_callback;
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2013 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_frame.h"
+
+#include <string.h>
+#include <assert.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include "nghttp2_helper.h"
+#include "nghttp2_net.h"
+#include "nghttp2_priority_spec.h"
+
+void nghttp2_frame_pack_frame_hd(uint8_t *buf, const nghttp2_frame_hd *hd) {
+ nghttp2_put_uint32be(&buf[0], (uint32_t)(hd->length << 8));
+ buf[3] = hd->type;
+ buf[4] = hd->flags;
+ nghttp2_put_uint32be(&buf[5], (uint32_t)hd->stream_id);
+ /* ignore hd->reserved for now */
+}
+
+void nghttp2_frame_unpack_frame_hd(nghttp2_frame_hd *hd, const uint8_t *buf) {
+ hd->length = nghttp2_get_uint32(&buf[0]) >> 8;
+ hd->type = buf[3];
+ hd->flags = buf[4];
+ hd->stream_id = nghttp2_get_uint32(&buf[5]) & NGHTTP2_STREAM_ID_MASK;
+ hd->reserved = 0;
+}
+
+void nghttp2_frame_hd_init(nghttp2_frame_hd *hd, size_t length, uint8_t type,
+ uint8_t flags, int32_t stream_id) {
+ hd->length = length;
+ hd->type = type;
+ hd->flags = flags;
+ hd->stream_id = stream_id;
+ hd->reserved = 0;
+}
+
+void nghttp2_frame_headers_init(nghttp2_headers *frame, uint8_t flags,
+ int32_t stream_id, nghttp2_headers_category cat,
+ const nghttp2_priority_spec *pri_spec,
+ nghttp2_nv *nva, size_t nvlen) {
+ nghttp2_frame_hd_init(&frame->hd, 0, NGHTTP2_HEADERS, flags, stream_id);
+ frame->padlen = 0;
+ frame->nva = nva;
+ frame->nvlen = nvlen;
+ frame->cat = cat;
+
+ if (pri_spec) {
+ frame->pri_spec = *pri_spec;
+ } else {
+ nghttp2_priority_spec_default_init(&frame->pri_spec);
+ }
+}
+
+void nghttp2_frame_headers_free(nghttp2_headers *frame, nghttp2_mem *mem) {
+ nghttp2_nv_array_del(frame->nva, mem);
+}
+
+void nghttp2_frame_priority_init(nghttp2_priority *frame, int32_t stream_id,
+ const nghttp2_priority_spec *pri_spec) {
+ nghttp2_frame_hd_init(&frame->hd, NGHTTP2_PRIORITY_SPECLEN, NGHTTP2_PRIORITY,
+ NGHTTP2_FLAG_NONE, stream_id);
+ frame->pri_spec = *pri_spec;
+}
+
+void nghttp2_frame_priority_free(nghttp2_priority *frame _U_) {}
+
+void nghttp2_frame_rst_stream_init(nghttp2_rst_stream *frame, int32_t stream_id,
+ uint32_t error_code) {
+ nghttp2_frame_hd_init(&frame->hd, 4, NGHTTP2_RST_STREAM, NGHTTP2_FLAG_NONE,
+ stream_id);
+ frame->error_code = error_code;
+}
+
+void nghttp2_frame_rst_stream_free(nghttp2_rst_stream *frame _U_) {}
+
+void nghttp2_frame_settings_init(nghttp2_settings *frame, uint8_t flags,
+ nghttp2_settings_entry *iv, size_t niv) {
+ nghttp2_frame_hd_init(&frame->hd, niv * NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH,
+ NGHTTP2_SETTINGS, flags, 0);
+ frame->niv = niv;
+ frame->iv = iv;
+}
+
+void nghttp2_frame_settings_free(nghttp2_settings *frame, nghttp2_mem *mem) {
+ nghttp2_mem_free(mem, frame->iv);
+}
+
+void nghttp2_frame_push_promise_init(nghttp2_push_promise *frame, uint8_t flags,
+ int32_t stream_id,
+ int32_t promised_stream_id,
+ nghttp2_nv *nva, size_t nvlen) {
+ nghttp2_frame_hd_init(&frame->hd, 0, NGHTTP2_PUSH_PROMISE, flags, stream_id);
+ frame->padlen = 0;
+ frame->nva = nva;
+ frame->nvlen = nvlen;
+ frame->promised_stream_id = promised_stream_id;
+ frame->reserved = 0;
+}
+
+void nghttp2_frame_push_promise_free(nghttp2_push_promise *frame,
+ nghttp2_mem *mem) {
+ nghttp2_nv_array_del(frame->nva, mem);
+}
+
+void nghttp2_frame_ping_init(nghttp2_ping *frame, uint8_t flags,
+ const uint8_t *opaque_data) {
+ nghttp2_frame_hd_init(&frame->hd, 8, NGHTTP2_PING, flags, 0);
+ if (opaque_data) {
+ memcpy(frame->opaque_data, opaque_data, sizeof(frame->opaque_data));
+ } else {
+ memset(frame->opaque_data, 0, sizeof(frame->opaque_data));
+ }
+}
+
+void nghttp2_frame_ping_free(nghttp2_ping *frame _U_) {}
+
+void nghttp2_frame_goaway_init(nghttp2_goaway *frame, int32_t last_stream_id,
+ uint32_t error_code, uint8_t *opaque_data,
+ size_t opaque_data_len) {
+ nghttp2_frame_hd_init(&frame->hd, 8 + opaque_data_len, NGHTTP2_GOAWAY,
+ NGHTTP2_FLAG_NONE, 0);
+ frame->last_stream_id = last_stream_id;
+ frame->error_code = error_code;
+ frame->opaque_data = opaque_data;
+ frame->opaque_data_len = opaque_data_len;
+ frame->reserved = 0;
+}
+
+void nghttp2_frame_goaway_free(nghttp2_goaway *frame, nghttp2_mem *mem) {
+ nghttp2_mem_free(mem, frame->opaque_data);
+}
+
+void nghttp2_frame_window_update_init(nghttp2_window_update *frame,
+ uint8_t flags, int32_t stream_id,
+ int32_t window_size_increment) {
+ nghttp2_frame_hd_init(&frame->hd, 4, NGHTTP2_WINDOW_UPDATE, flags, stream_id);
+ frame->window_size_increment = window_size_increment;
+ frame->reserved = 0;
+}
+
+void nghttp2_frame_window_update_free(nghttp2_window_update *frame _U_) {}
+
+size_t nghttp2_frame_trail_padlen(nghttp2_frame *frame, size_t padlen) {
+ /* We have iframe->padlen == 0, but iframe->frame.hd.flags may have
+ NGHTTP2_FLAG_PADDED set. This happens when receiving
+ CONTINUATION frame, since we don't reset flags after HEADERS was
+ received. */
+ if (padlen == 0) {
+ return 0;
+ }
+ return padlen - ((frame->hd.flags & NGHTTP2_FLAG_PADDED) > 0);
+}
+
+void nghttp2_frame_data_init(nghttp2_data *frame, uint8_t flags,
+ int32_t stream_id) {
+ /* At this moment, the length of DATA frame is unknown */
+ nghttp2_frame_hd_init(&frame->hd, 0, NGHTTP2_DATA, flags, stream_id);
+ frame->padlen = 0;
+}
+
+void nghttp2_frame_data_free(nghttp2_data *frame _U_) {}
+
+void nghttp2_frame_extension_init(nghttp2_extension *frame, uint8_t type,
+ uint8_t flags, int32_t stream_id,
+ void *payload) {
+ nghttp2_frame_hd_init(&frame->hd, 0, type, flags, stream_id);
+ frame->payload = payload;
+}
+
+void nghttp2_frame_extension_free(nghttp2_extension *frame _U_) {}
+
+void nghttp2_frame_altsvc_init(nghttp2_extension *frame, int32_t stream_id,
+ uint8_t *origin, size_t origin_len,
+ uint8_t *field_value, size_t field_value_len) {
+ nghttp2_ext_altsvc *altsvc;
+
+ nghttp2_frame_hd_init(&frame->hd, 2 + origin_len + field_value_len,
+ NGHTTP2_ALTSVC, NGHTTP2_FLAG_NONE, stream_id);
+
+ altsvc = frame->payload;
+ altsvc->origin = origin;
+ altsvc->origin_len = origin_len;
+ altsvc->field_value = field_value;
+ altsvc->field_value_len = field_value_len;
+}
+
+void nghttp2_frame_altsvc_free(nghttp2_extension *frame, nghttp2_mem *mem) {
+ nghttp2_ext_altsvc *altsvc;
+
+ altsvc = frame->payload;
+ /* We use the same buffer for altsvc->origin and
+ altsvc->field_value. */
+ nghttp2_mem_free(mem, altsvc->origin);
+}
+
+size_t nghttp2_frame_priority_len(uint8_t flags) {
+ if (flags & NGHTTP2_FLAG_PRIORITY) {
+ return NGHTTP2_PRIORITY_SPECLEN;
+ }
+
+ return 0;
+}
+
+size_t nghttp2_frame_headers_payload_nv_offset(nghttp2_headers *frame) {
+ return nghttp2_frame_priority_len(frame->hd.flags);
+}
+
+/*
+ * Call this function after payload was serialized, but not before
+ * changing buf->pos and serializing frame header.
+ *
+ * This function assumes bufs->cur points to the last buf chain of the
+ * frame(s).
+ *
+ * This function serializes frame header for HEADERS/PUSH_PROMISE and
+ * handles their successive CONTINUATION frames.
+ *
+ * We don't process any padding here.
+ */
+static int frame_pack_headers_shared(nghttp2_bufs *bufs,
+ nghttp2_frame_hd *frame_hd) {
+ nghttp2_buf *buf;
+ nghttp2_buf_chain *ci, *ce;
+ nghttp2_frame_hd hd;
+
+ buf = &bufs->head->buf;
+
+ hd = *frame_hd;
+ hd.length = nghttp2_buf_len(buf);
+
+ DEBUGF(fprintf(stderr, "send: HEADERS/PUSH_PROMISE, payloadlen=%zu\n",
+ hd.length));
+
+ /* We have multiple frame buffers, which means one or more
+ CONTINUATION frame is involved. Remove END_HEADERS flag from the
+ first frame. */
+ if (bufs->head != bufs->cur) {
+ hd.flags = (uint8_t)(hd.flags & ~NGHTTP2_FLAG_END_HEADERS);
+ }
+
+ buf->pos -= NGHTTP2_FRAME_HDLEN;
+ nghttp2_frame_pack_frame_hd(buf->pos, &hd);
+
+ if (bufs->head != bufs->cur) {
+ /* 2nd and later frames are CONTINUATION frames. */
+ hd.type = NGHTTP2_CONTINUATION;
+ /* We don't have no flags except for last CONTINUATION */
+ hd.flags = NGHTTP2_FLAG_NONE;
+
+ ce = bufs->cur;
+
+ for (ci = bufs->head->next; ci != ce; ci = ci->next) {
+ buf = &ci->buf;
+
+ hd.length = nghttp2_buf_len(buf);
+
+ DEBUGF(fprintf(stderr, "send: int CONTINUATION, payloadlen=%zu\n",
+ hd.length));
+
+ buf->pos -= NGHTTP2_FRAME_HDLEN;
+ nghttp2_frame_pack_frame_hd(buf->pos, &hd);
+ }
+
+ buf = &ci->buf;
+ hd.length = nghttp2_buf_len(buf);
+ /* Set END_HEADERS flag for last CONTINUATION */
+ hd.flags = NGHTTP2_FLAG_END_HEADERS;
+
+ DEBUGF(fprintf(stderr, "send: last CONTINUATION, payloadlen=%zu\n",
+ hd.length));
+
+ buf->pos -= NGHTTP2_FRAME_HDLEN;
+ nghttp2_frame_pack_frame_hd(buf->pos, &hd);
+ }
+
+ return 0;
+}
+
+int nghttp2_frame_pack_headers(nghttp2_bufs *bufs, nghttp2_headers *frame,
+ nghttp2_hd_deflater *deflater) {
+ size_t nv_offset;
+ int rv;
+ nghttp2_buf *buf;
+
+ assert(bufs->head == bufs->cur);
+
+ nv_offset = nghttp2_frame_headers_payload_nv_offset(frame);
+
+ buf = &bufs->cur->buf;
+
+ buf->pos += nv_offset;
+ buf->last = buf->pos;
+
+ /* This call will adjust buf->last to the correct position */
+ rv = nghttp2_hd_deflate_hd_bufs(deflater, bufs, frame->nva, frame->nvlen);
+
+ if (rv == NGHTTP2_ERR_BUFFER_ERROR) {
+ rv = NGHTTP2_ERR_HEADER_COMP;
+ }
+
+ buf->pos -= nv_offset;
+
+ if (rv != 0) {
+ return rv;
+ }
+
+ if (frame->hd.flags & NGHTTP2_FLAG_PRIORITY) {
+ nghttp2_frame_pack_priority_spec(buf->pos, &frame->pri_spec);
+ }
+
+ frame->padlen = 0;
+ frame->hd.length = nghttp2_bufs_len(bufs);
+
+ return frame_pack_headers_shared(bufs, &frame->hd);
+}
+
+void nghttp2_frame_pack_priority_spec(uint8_t *buf,
+ const nghttp2_priority_spec *pri_spec) {
+ nghttp2_put_uint32be(buf, (uint32_t)pri_spec->stream_id);
+ if (pri_spec->exclusive) {
+ buf[0] |= 0x80;
+ }
+ buf[4] = (uint8_t)(pri_spec->weight - 1);
+}
+
+void nghttp2_frame_unpack_priority_spec(nghttp2_priority_spec *pri_spec,
+ uint8_t flags _U_,
+ const uint8_t *payload,
+ size_t payloadlen _U_) {
+ int32_t dep_stream_id;
+ uint8_t exclusive;
+ int32_t weight;
+
+ dep_stream_id = nghttp2_get_uint32(payload) & NGHTTP2_STREAM_ID_MASK;
+ exclusive = (payload[0] & 0x80) > 0;
+ weight = payload[4] + 1;
+
+ nghttp2_priority_spec_init(pri_spec, dep_stream_id, weight, exclusive);
+}
+
+int nghttp2_frame_unpack_headers_payload(nghttp2_headers *frame,
+ const uint8_t *payload,
+ size_t payloadlen) {
+ if (frame->hd.flags & NGHTTP2_FLAG_PRIORITY) {
+ nghttp2_frame_unpack_priority_spec(&frame->pri_spec, frame->hd.flags,
+ payload, payloadlen);
+ } else {
+ nghttp2_priority_spec_default_init(&frame->pri_spec);
+ }
+
+ frame->nva = NULL;
+ frame->nvlen = 0;
+
+ return 0;
+}
+
+int nghttp2_frame_pack_priority(nghttp2_bufs *bufs, nghttp2_priority *frame) {
+ nghttp2_buf *buf;
+
+ assert(bufs->head == bufs->cur);
+
+ buf = &bufs->head->buf;
+
+ assert(nghttp2_buf_avail(buf) >= NGHTTP2_PRIORITY_SPECLEN);
+
+ buf->pos -= NGHTTP2_FRAME_HDLEN;
+
+ nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd);
+
+ nghttp2_frame_pack_priority_spec(buf->last, &frame->pri_spec);
+
+ buf->last += NGHTTP2_PRIORITY_SPECLEN;
+
+ return 0;
+}
+
+void nghttp2_frame_unpack_priority_payload(nghttp2_priority *frame,
+ const uint8_t *payload,
+ size_t payloadlen) {
+ nghttp2_frame_unpack_priority_spec(&frame->pri_spec, frame->hd.flags, payload,
+ payloadlen);
+}
+
+int nghttp2_frame_pack_rst_stream(nghttp2_bufs *bufs,
+ nghttp2_rst_stream *frame) {
+ nghttp2_buf *buf;
+
+ assert(bufs->head == bufs->cur);
+
+ buf = &bufs->head->buf;
+
+ assert(nghttp2_buf_avail(buf) >= 4);
+
+ buf->pos -= NGHTTP2_FRAME_HDLEN;
+
+ nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd);
+
+ nghttp2_put_uint32be(buf->last, frame->error_code);
+ buf->last += 4;
+
+ return 0;
+}
+
+void nghttp2_frame_unpack_rst_stream_payload(nghttp2_rst_stream *frame,
+ const uint8_t *payload,
+ size_t payloadlen _U_) {
+ frame->error_code = nghttp2_get_uint32(payload);
+}
+
+int nghttp2_frame_pack_settings(nghttp2_bufs *bufs, nghttp2_settings *frame) {
+ nghttp2_buf *buf;
+
+ assert(bufs->head == bufs->cur);
+
+ buf = &bufs->head->buf;
+
+ if (nghttp2_buf_avail(buf) < frame->hd.length) {
+ return NGHTTP2_ERR_FRAME_SIZE_ERROR;
+ }
+
+ buf->pos -= NGHTTP2_FRAME_HDLEN;
+
+ nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd);
+
+ buf->last +=
+ nghttp2_frame_pack_settings_payload(buf->last, frame->iv, frame->niv);
+
+ return 0;
+}
+
+size_t nghttp2_frame_pack_settings_payload(uint8_t *buf,
+ const nghttp2_settings_entry *iv,
+ size_t niv) {
+ size_t i;
+ for (i = 0; i < niv; ++i, buf += NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH) {
+ nghttp2_put_uint16be(buf, (uint16_t)iv[i].settings_id);
+ nghttp2_put_uint32be(buf + 2, iv[i].value);
+ }
+ return NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH * niv;
+}
+
+void nghttp2_frame_unpack_settings_payload(nghttp2_settings *frame,
+ nghttp2_settings_entry *iv,
+ size_t niv) {
+ frame->iv = iv;
+ frame->niv = niv;
+}
+
+void nghttp2_frame_unpack_settings_entry(nghttp2_settings_entry *iv,
+ const uint8_t *payload) {
+ iv->settings_id = nghttp2_get_uint16(&payload[0]);
+ iv->value = nghttp2_get_uint32(&payload[2]);
+}
+
+int nghttp2_frame_unpack_settings_payload2(nghttp2_settings_entry **iv_ptr,
+ size_t *niv_ptr,
+ const uint8_t *payload,
+ size_t payloadlen,
+ nghttp2_mem *mem) {
+ size_t i;
+
+ *niv_ptr = payloadlen / NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH;
+
+ if (*niv_ptr == 0) {
+ *iv_ptr = NULL;
+
+ return 0;
+ }
+
+ *iv_ptr =
+ nghttp2_mem_malloc(mem, (*niv_ptr) * sizeof(nghttp2_settings_entry));
+
+ if (*iv_ptr == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ for (i = 0; i < *niv_ptr; ++i) {
+ size_t off = i * NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH;
+ nghttp2_frame_unpack_settings_entry(&(*iv_ptr)[i], &payload[off]);
+ }
+
+ return 0;
+}
+
+int nghttp2_frame_pack_push_promise(nghttp2_bufs *bufs,
+ nghttp2_push_promise *frame,
+ nghttp2_hd_deflater *deflater) {
+ size_t nv_offset = 4;
+ int rv;
+ nghttp2_buf *buf;
+
+ assert(bufs->head == bufs->cur);
+
+ buf = &bufs->cur->buf;
+
+ buf->pos += nv_offset;
+ buf->last = buf->pos;
+
+ /* This call will adjust buf->last to the correct position */
+ rv = nghttp2_hd_deflate_hd_bufs(deflater, bufs, frame->nva, frame->nvlen);
+
+ if (rv == NGHTTP2_ERR_BUFFER_ERROR) {
+ rv = NGHTTP2_ERR_HEADER_COMP;
+ }
+
+ buf->pos -= nv_offset;
+
+ if (rv != 0) {
+ return rv;
+ }
+
+ nghttp2_put_uint32be(buf->pos, (uint32_t)frame->promised_stream_id);
+
+ frame->padlen = 0;
+ frame->hd.length = nghttp2_bufs_len(bufs);
+
+ return frame_pack_headers_shared(bufs, &frame->hd);
+}
+
+int nghttp2_frame_unpack_push_promise_payload(nghttp2_push_promise *frame,
+ const uint8_t *payload,
+ size_t payloadlen _U_) {
+ frame->promised_stream_id =
+ nghttp2_get_uint32(payload) & NGHTTP2_STREAM_ID_MASK;
+ frame->nva = NULL;
+ frame->nvlen = 0;
+ return 0;
+}
+
+int nghttp2_frame_pack_ping(nghttp2_bufs *bufs, nghttp2_ping *frame) {
+ nghttp2_buf *buf;
+
+ assert(bufs->head == bufs->cur);
+
+ buf = &bufs->head->buf;
+
+ assert(nghttp2_buf_avail(buf) >= 8);
+
+ buf->pos -= NGHTTP2_FRAME_HDLEN;
+
+ nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd);
+
+ buf->last =
+ nghttp2_cpymem(buf->last, frame->opaque_data, sizeof(frame->opaque_data));
+
+ return 0;
+}
+
+void nghttp2_frame_unpack_ping_payload(nghttp2_ping *frame,
+ const uint8_t *payload,
+ size_t payloadlen _U_) {
+ memcpy(frame->opaque_data, payload, sizeof(frame->opaque_data));
+}
+
+int nghttp2_frame_pack_goaway(nghttp2_bufs *bufs, nghttp2_goaway *frame) {
+ int rv;
+ nghttp2_buf *buf;
+
+ assert(bufs->head == bufs->cur);
+
+ buf = &bufs->head->buf;
+
+ buf->pos -= NGHTTP2_FRAME_HDLEN;
+
+ nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd);
+
+ nghttp2_put_uint32be(buf->last, (uint32_t)frame->last_stream_id);
+ buf->last += 4;
+
+ nghttp2_put_uint32be(buf->last, frame->error_code);
+ buf->last += 4;
+
+ rv = nghttp2_bufs_add(bufs, frame->opaque_data, frame->opaque_data_len);
+
+ if (rv == NGHTTP2_ERR_BUFFER_ERROR) {
+ return NGHTTP2_ERR_FRAME_SIZE_ERROR;
+ }
+
+ if (rv != 0) {
+ return rv;
+ }
+
+ return 0;
+}
+
+void nghttp2_frame_unpack_goaway_payload(nghttp2_goaway *frame,
+ const uint8_t *payload,
+ size_t payloadlen _U_,
+ uint8_t *var_gift_payload,
+ size_t var_gift_payloadlen) {
+ frame->last_stream_id = nghttp2_get_uint32(payload) & NGHTTP2_STREAM_ID_MASK;
+ frame->error_code = nghttp2_get_uint32(payload + 4);
+
+ frame->opaque_data = var_gift_payload;
+ frame->opaque_data_len = var_gift_payloadlen;
+}
+
+int nghttp2_frame_unpack_goaway_payload2(nghttp2_goaway *frame,
+ const uint8_t *payload,
+ size_t payloadlen, nghttp2_mem *mem) {
+ uint8_t *var_gift_payload;
+ size_t var_gift_payloadlen;
+
+ if (payloadlen > 8) {
+ var_gift_payloadlen = payloadlen - 8;
+ } else {
+ var_gift_payloadlen = 0;
+ }
+
+ payloadlen -= var_gift_payloadlen;
+
+ if (!var_gift_payloadlen) {
+ var_gift_payload = NULL;
+ } else {
+ var_gift_payload = nghttp2_mem_malloc(mem, var_gift_payloadlen);
+
+ if (var_gift_payload == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ memcpy(var_gift_payload, payload + 8, var_gift_payloadlen);
+ }
+
+ nghttp2_frame_unpack_goaway_payload(frame, payload, payloadlen,
+ var_gift_payload, var_gift_payloadlen);
+
+ return 0;
+}
+
+int nghttp2_frame_pack_window_update(nghttp2_bufs *bufs,
+ nghttp2_window_update *frame) {
+ nghttp2_buf *buf;
+
+ assert(bufs->head == bufs->cur);
+
+ buf = &bufs->head->buf;
+
+ assert(nghttp2_buf_avail(buf) >= 4);
+
+ buf->pos -= NGHTTP2_FRAME_HDLEN;
+
+ nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd);
+
+ nghttp2_put_uint32be(buf->last, (uint32_t)frame->window_size_increment);
+ buf->last += 4;
+
+ return 0;
+}
+
+void nghttp2_frame_unpack_window_update_payload(nghttp2_window_update *frame,
+ const uint8_t *payload,
+ size_t payloadlen _U_) {
+ frame->window_size_increment =
+ nghttp2_get_uint32(payload) & NGHTTP2_WINDOW_SIZE_INCREMENT_MASK;
+}
+
+int nghttp2_frame_pack_altsvc(nghttp2_bufs *bufs, nghttp2_extension *frame) {
+ int rv;
+ nghttp2_buf *buf;
+ nghttp2_ext_altsvc *altsvc;
+
+ altsvc = frame->payload;
+
+ buf = &bufs->head->buf;
+
+ assert(nghttp2_buf_avail(buf) >=
+ 2 + altsvc->origin_len + altsvc->field_value_len);
+
+ buf->pos -= NGHTTP2_FRAME_HDLEN;
+
+ nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd);
+
+ nghttp2_put_uint16be(buf->last, (uint16_t)altsvc->origin_len);
+ buf->last += 2;
+
+ rv = nghttp2_bufs_add(bufs, altsvc->origin, altsvc->origin_len);
+
+ assert(rv == 0);
+
+ rv = nghttp2_bufs_add(bufs, altsvc->field_value, altsvc->field_value_len);
+
+ assert(rv == 0);
+
+ return 0;
+}
+
+void nghttp2_frame_unpack_altsvc_payload(nghttp2_extension *frame,
+ size_t origin_len, uint8_t *payload,
+ size_t payloadlen) {
+ nghttp2_ext_altsvc *altsvc;
+ uint8_t *p;
+
+ altsvc = frame->payload;
+ p = payload;
+
+ altsvc->origin = p;
+
+ p += origin_len;
+
+ altsvc->origin_len = origin_len;
+
+ altsvc->field_value = p;
+ altsvc->field_value_len = (size_t)(payload + payloadlen - p);
+}
+
+int nghttp2_frame_unpack_altsvc_payload2(nghttp2_extension *frame,
+ const uint8_t *payload,
+ size_t payloadlen, nghttp2_mem *mem) {
+ uint8_t *buf;
+ size_t origin_len;
+
+ if (payloadlen < 2) {
+ return NGHTTP2_FRAME_SIZE_ERROR;
+ }
+
+ origin_len = nghttp2_get_uint16(payload);
+
+ buf = nghttp2_mem_malloc(mem, payloadlen - 2);
+ if (!buf) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ nghttp2_cpymem(buf, payload + 2, payloadlen - 2);
+
+ nghttp2_frame_unpack_altsvc_payload(frame, origin_len, buf, payloadlen - 2);
+
+ return 0;
+}
+
+nghttp2_settings_entry *nghttp2_frame_iv_copy(const nghttp2_settings_entry *iv,
+ size_t niv, nghttp2_mem *mem) {
+ nghttp2_settings_entry *iv_copy;
+ size_t len = niv * sizeof(nghttp2_settings_entry);
+
+ if (len == 0) {
+ return NULL;
+ }
+
+ iv_copy = nghttp2_mem_malloc(mem, len);
+
+ if (iv_copy == NULL) {
+ return NULL;
+ }
+
+ memcpy(iv_copy, iv, len);
+
+ return iv_copy;
+}
+
+int nghttp2_nv_equal(const nghttp2_nv *a, const nghttp2_nv *b) {
+ return a->namelen == b->namelen && a->valuelen == b->valuelen &&
+ memcmp(a->name, b->name, a->namelen) == 0 &&
+ memcmp(a->value, b->value, a->valuelen) == 0;
+}
+
+void nghttp2_nv_array_del(nghttp2_nv *nva, nghttp2_mem *mem) {
+ nghttp2_mem_free(mem, nva);
+}
+
+static int bytes_compar(const uint8_t *a, size_t alen, const uint8_t *b,
+ size_t blen) {
+ int rv;
+
+ if (alen == blen) {
+ return memcmp(a, b, alen);
+ }
+
+ if (alen < blen) {
+ rv = memcmp(a, b, alen);
+
+ if (rv == 0) {
+ return -1;
+ }
+
+ return rv;
+ }
+
+ rv = memcmp(a, b, blen);
+
+ if (rv == 0) {
+ return 1;
+ }
+
+ return rv;
+}
+
+int nghttp2_nv_compare_name(const nghttp2_nv *lhs, const nghttp2_nv *rhs) {
+ return bytes_compar(lhs->name, lhs->namelen, rhs->name, rhs->namelen);
+}
+
+static int nv_compar(const void *lhs, const void *rhs) {
+ const nghttp2_nv *a = (const nghttp2_nv *)lhs;
+ const nghttp2_nv *b = (const nghttp2_nv *)rhs;
+ int rv;
+
+ rv = bytes_compar(a->name, a->namelen, b->name, b->namelen);
+
+ if (rv == 0) {
+ return bytes_compar(a->value, a->valuelen, b->value, b->valuelen);
+ }
+
+ return rv;
+}
+
+void nghttp2_nv_array_sort(nghttp2_nv *nva, size_t nvlen) {
+ qsort(nva, nvlen, sizeof(nghttp2_nv), nv_compar);
+}
+
+int nghttp2_nv_array_copy(nghttp2_nv **nva_ptr, const nghttp2_nv *nva,
+ size_t nvlen, nghttp2_mem *mem) {
+ size_t i;
+ uint8_t *data = NULL;
+ size_t buflen = 0;
+ nghttp2_nv *p;
+
+ if (nvlen == 0) {
+ *nva_ptr = NULL;
+
+ return 0;
+ }
+
+ for (i = 0; i < nvlen; ++i) {
+ /* + 1 for null-termination */
+ if ((nva[i].flags & NGHTTP2_NV_FLAG_NO_COPY_NAME) == 0) {
+ buflen += nva[i].namelen + 1;
+ }
+ if ((nva[i].flags & NGHTTP2_NV_FLAG_NO_COPY_VALUE) == 0) {
+ buflen += nva[i].valuelen + 1;
+ }
+ }
+
+ buflen += sizeof(nghttp2_nv) * nvlen;
+
+ *nva_ptr = nghttp2_mem_malloc(mem, buflen);
+
+ if (*nva_ptr == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ p = *nva_ptr;
+ data = (uint8_t *)(*nva_ptr) + sizeof(nghttp2_nv) * nvlen;
+
+ for (i = 0; i < nvlen; ++i) {
+ p->flags = nva[i].flags;
+
+ if (nva[i].flags & NGHTTP2_NV_FLAG_NO_COPY_NAME) {
+ p->name = nva[i].name;
+ p->namelen = nva[i].namelen;
+ } else {
+ memcpy(data, nva[i].name, nva[i].namelen);
+ p->name = data;
+ p->namelen = nva[i].namelen;
+ data[p->namelen] = '\0';
+ nghttp2_downcase(p->name, p->namelen);
+ data += nva[i].namelen + 1;
+ }
+
+ if (nva[i].flags & NGHTTP2_NV_FLAG_NO_COPY_VALUE) {
+ p->value = nva[i].value;
+ p->valuelen = nva[i].valuelen;
+ } else {
+ memcpy(data, nva[i].value, nva[i].valuelen);
+ p->value = data;
+ p->valuelen = nva[i].valuelen;
+ data[p->valuelen] = '\0';
+ data += nva[i].valuelen + 1;
+ }
+
+ ++p;
+ }
+ return 0;
+}
+
+int nghttp2_iv_check(const nghttp2_settings_entry *iv, size_t niv) {
+ size_t i;
+ for (i = 0; i < niv; ++i) {
+ switch (iv[i].settings_id) {
+ case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE:
+ break;
+ case NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS:
+ break;
+ case NGHTTP2_SETTINGS_ENABLE_PUSH:
+ if (iv[i].value != 0 && iv[i].value != 1) {
+ return 0;
+ }
+ break;
+ case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE:
+ if (iv[i].value > (uint32_t)NGHTTP2_MAX_WINDOW_SIZE) {
+ return 0;
+ }
+ break;
+ case NGHTTP2_SETTINGS_MAX_FRAME_SIZE:
+ if (iv[i].value < NGHTTP2_MAX_FRAME_SIZE_MIN ||
+ iv[i].value > NGHTTP2_MAX_FRAME_SIZE_MAX) {
+ return 0;
+ }
+ break;
+ case NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE:
+ break;
+ }
+ }
+ return 1;
+}
+
+static void frame_set_pad(nghttp2_buf *buf, size_t padlen, int framehd_only) {
+ size_t trail_padlen;
+ size_t newlen;
+
+ DEBUGF(fprintf(stderr, "send: padlen=%zu, shift left 1 bytes\n", padlen));
+
+ memmove(buf->pos - 1, buf->pos, NGHTTP2_FRAME_HDLEN);
+
+ --buf->pos;
+
+ buf->pos[4] |= NGHTTP2_FLAG_PADDED;
+
+ newlen = (nghttp2_get_uint32(buf->pos) >> 8) + padlen;
+ nghttp2_put_uint32be(buf->pos, (uint32_t)((newlen << 8) + buf->pos[3]));
+
+ if (framehd_only) {
+ return;
+ }
+
+ trail_padlen = padlen - 1;
+ buf->pos[NGHTTP2_FRAME_HDLEN] = (uint8_t)trail_padlen;
+
+ /* zero out padding */
+ memset(buf->last, 0, trail_padlen);
+ /* extend buffers trail_padlen bytes, since we ate previous padlen -
+ trail_padlen byte(s) */
+ buf->last += trail_padlen;
+}
+
+int nghttp2_frame_add_pad(nghttp2_bufs *bufs, nghttp2_frame_hd *hd,
+ size_t padlen, int framehd_only) {
+ nghttp2_buf *buf;
+
+ if (padlen == 0) {
+ DEBUGF(fprintf(stderr, "send: padlen = 0, nothing to do\n"));
+
+ return 0;
+ }
+
+ /*
+ * We have arranged bufs like this:
+ *
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | |Frame header | Frame payload... :
+ * +-+-----------------+-------------------------------------------+
+ * | |Frame header | Frame payload... :
+ * +-+-----------------+-------------------------------------------+
+ * | |Frame header | Frame payload... :
+ * +-+-----------------+-------------------------------------------+
+ *
+ * We arranged padding so that it is included in the first frame
+ * completely. For padded frame, we are going to adjust buf->pos of
+ * frame which includes padding and serialize (memmove) frame header
+ * in the correct position. Also extends buf->last to include
+ * padding.
+ */
+
+ buf = &bufs->head->buf;
+
+ assert(nghttp2_buf_avail(buf) >= padlen - 1);
+
+ frame_set_pad(buf, padlen, framehd_only);
+
+ hd->length += padlen;
+ hd->flags |= NGHTTP2_FLAG_PADDED;
+
+ DEBUGF(fprintf(stderr, "send: final payloadlen=%zu, padlen=%zu\n", hd->length,
+ padlen));
+
+ return 0;
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2013 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_hd.h"
+
+#include <string.h>
+#include <assert.h>
+#include <stdio.h>
+
+#include "nghttp2_helper.h"
+#include "nghttp2_int.h"
+
+/* Make scalar initialization form of nghttp2_hd_entry */
+#define MAKE_STATIC_ENT(N, V, T, H) \
+ { \
+ { NULL, NULL, (uint8_t *)(N), sizeof((N)) - 1, -1 } \
+ , {NULL, NULL, (uint8_t *)(V), sizeof((V)) - 1, -1}, \
+ {(uint8_t *)(N), (uint8_t *)(V), sizeof((N)) - 1, sizeof((V)) - 1, 0}, \
+ T, H \
+ }
+
+/* Generated by mkstatictbl.py */
+/* 3rd parameter is nghttp2_token value for header field name. We use
+ first enum value if same header names are repeated (e.g.,
+ :status). */
+static nghttp2_hd_static_entry static_table[] = {
+ MAKE_STATIC_ENT(":authority", "", 0, 3153725150u),
+ MAKE_STATIC_ENT(":method", "GET", 1, 695666056u),
+ MAKE_STATIC_ENT(":method", "POST", 1, 695666056u),
+ MAKE_STATIC_ENT(":path", "/", 3, 3292848686u),
+ MAKE_STATIC_ENT(":path", "/index.html", 3, 3292848686u),
+ MAKE_STATIC_ENT(":scheme", "http", 5, 2510477674u),
+ MAKE_STATIC_ENT(":scheme", "https", 5, 2510477674u),
+ MAKE_STATIC_ENT(":status", "200", 7, 4000288983u),
+ MAKE_STATIC_ENT(":status", "204", 7, 4000288983u),
+ MAKE_STATIC_ENT(":status", "206", 7, 4000288983u),
+ MAKE_STATIC_ENT(":status", "304", 7, 4000288983u),
+ MAKE_STATIC_ENT(":status", "400", 7, 4000288983u),
+ MAKE_STATIC_ENT(":status", "404", 7, 4000288983u),
+ MAKE_STATIC_ENT(":status", "500", 7, 4000288983u),
+ MAKE_STATIC_ENT("accept-charset", "", 14, 3664010344u),
+ MAKE_STATIC_ENT("accept-encoding", "gzip, deflate", 15, 3379649177u),
+ MAKE_STATIC_ENT("accept-language", "", 16, 1979086614u),
+ MAKE_STATIC_ENT("accept-ranges", "", 17, 1713753958u),
+ MAKE_STATIC_ENT("accept", "", 18, 136609321u),
+ MAKE_STATIC_ENT("access-control-allow-origin", "", 19, 2710797292u),
+ MAKE_STATIC_ENT("age", "", 20, 742476188u),
+ MAKE_STATIC_ENT("allow", "", 21, 2930878514u),
+ MAKE_STATIC_ENT("authorization", "", 22, 2436257726u),
+ MAKE_STATIC_ENT("cache-control", "", 23, 1355326669u),
+ MAKE_STATIC_ENT("content-disposition", "", 24, 3889184348u),
+ MAKE_STATIC_ENT("content-encoding", "", 25, 65203592u),
+ MAKE_STATIC_ENT("content-language", "", 26, 24973587u),
+ MAKE_STATIC_ENT("content-length", "", 27, 1308181789u),
+ MAKE_STATIC_ENT("content-location", "", 28, 2302364718u),
+ MAKE_STATIC_ENT("content-range", "", 29, 3555523146u),
+ MAKE_STATIC_ENT("content-type", "", 30, 4244048277u),
+ MAKE_STATIC_ENT("cookie", "", 31, 2007449791u),
+ MAKE_STATIC_ENT("date", "", 32, 3564297305u),
+ MAKE_STATIC_ENT("etag", "", 33, 113792960u),
+ MAKE_STATIC_ENT("expect", "", 34, 2530896728u),
+ MAKE_STATIC_ENT("expires", "", 35, 1049544579u),
+ MAKE_STATIC_ENT("from", "", 36, 2513272949u),
+ MAKE_STATIC_ENT("host", "", 37, 2952701295u),
+ MAKE_STATIC_ENT("if-match", "", 38, 3597694698u),
+ MAKE_STATIC_ENT("if-modified-since", "", 39, 2213050793u),
+ MAKE_STATIC_ENT("if-none-match", "", 40, 2536202615u),
+ MAKE_STATIC_ENT("if-range", "", 41, 2340978238u),
+ MAKE_STATIC_ENT("if-unmodified-since", "", 42, 3794814858u),
+ MAKE_STATIC_ENT("last-modified", "", 43, 3226950251u),
+ MAKE_STATIC_ENT("link", "", 44, 232457833u),
+ MAKE_STATIC_ENT("location", "", 45, 200649126u),
+ MAKE_STATIC_ENT("max-forwards", "", 46, 1826162134u),
+ MAKE_STATIC_ENT("proxy-authenticate", "", 47, 2709445359u),
+ MAKE_STATIC_ENT("proxy-authorization", "", 48, 2686392507u),
+ MAKE_STATIC_ENT("range", "", 49, 4208725202u),
+ MAKE_STATIC_ENT("referer", "", 50, 3969579366u),
+ MAKE_STATIC_ENT("refresh", "", 51, 3572655668u),
+ MAKE_STATIC_ENT("retry-after", "", 52, 3336180598u),
+ MAKE_STATIC_ENT("server", "", 53, 1085029842u),
+ MAKE_STATIC_ENT("set-cookie", "", 54, 1848371000u),
+ MAKE_STATIC_ENT("strict-transport-security", "", 55, 4138147361u),
+ MAKE_STATIC_ENT("transfer-encoding", "", 56, 3719590988u),
+ MAKE_STATIC_ENT("user-agent", "", 57, 606444526u),
+ MAKE_STATIC_ENT("vary", "", 58, 1085005381u),
+ MAKE_STATIC_ENT("via", "", 59, 1762798611u),
+ MAKE_STATIC_ENT("www-authenticate", "", 60, 779865858u),
+};
+
+static int memeq(const void *s1, const void *s2, size_t n) {
+ return memcmp(s1, s2, n) == 0;
+}
+
+/*
+ * This function was generated by genlibtokenlookup.py. Inspired by
+ * h2o header lookup. https://github.com/h2o/h2o
+ */
+static int32_t lookup_token(const uint8_t *name, size_t namelen) {
+ switch (namelen) {
+ case 2:
+ switch (name[1]) {
+ case 'e':
+ if (lstreq("t", name, 1)) {
+ return NGHTTP2_TOKEN_TE;
+ }
+ break;
+ }
+ break;
+ case 3:
+ switch (name[2]) {
+ case 'a':
+ if (lstreq("vi", name, 2)) {
+ return NGHTTP2_TOKEN_VIA;
+ }
+ break;
+ case 'e':
+ if (lstreq("ag", name, 2)) {
+ return NGHTTP2_TOKEN_AGE;
+ }
+ break;
+ }
+ break;
+ case 4:
+ switch (name[3]) {
+ case 'e':
+ if (lstreq("dat", name, 3)) {
+ return NGHTTP2_TOKEN_DATE;
+ }
+ break;
+ case 'g':
+ if (lstreq("eta", name, 3)) {
+ return NGHTTP2_TOKEN_ETAG;
+ }
+ break;
+ case 'k':
+ if (lstreq("lin", name, 3)) {
+ return NGHTTP2_TOKEN_LINK;
+ }
+ break;
+ case 'm':
+ if (lstreq("fro", name, 3)) {
+ return NGHTTP2_TOKEN_FROM;
+ }
+ break;
+ case 't':
+ if (lstreq("hos", name, 3)) {
+ return NGHTTP2_TOKEN_HOST;
+ }
+ break;
+ case 'y':
+ if (lstreq("var", name, 3)) {
+ return NGHTTP2_TOKEN_VARY;
+ }
+ break;
+ }
+ break;
+ case 5:
+ switch (name[4]) {
+ case 'e':
+ if (lstreq("rang", name, 4)) {
+ return NGHTTP2_TOKEN_RANGE;
+ }
+ break;
+ case 'h':
+ if (lstreq(":pat", name, 4)) {
+ return NGHTTP2_TOKEN__PATH;
+ }
+ break;
+ case 'w':
+ if (lstreq("allo", name, 4)) {
+ return NGHTTP2_TOKEN_ALLOW;
+ }
+ break;
+ }
+ break;
+ case 6:
+ switch (name[5]) {
+ case 'e':
+ if (lstreq("cooki", name, 5)) {
+ return NGHTTP2_TOKEN_COOKIE;
+ }
+ break;
+ case 'r':
+ if (lstreq("serve", name, 5)) {
+ return NGHTTP2_TOKEN_SERVER;
+ }
+ break;
+ case 't':
+ if (lstreq("accep", name, 5)) {
+ return NGHTTP2_TOKEN_ACCEPT;
+ }
+ if (lstreq("expec", name, 5)) {
+ return NGHTTP2_TOKEN_EXPECT;
+ }
+ break;
+ }
+ break;
+ case 7:
+ switch (name[6]) {
+ case 'd':
+ if (lstreq(":metho", name, 6)) {
+ return NGHTTP2_TOKEN__METHOD;
+ }
+ break;
+ case 'e':
+ if (lstreq(":schem", name, 6)) {
+ return NGHTTP2_TOKEN__SCHEME;
+ }
+ if (lstreq("upgrad", name, 6)) {
+ return NGHTTP2_TOKEN_UPGRADE;
+ }
+ break;
+ case 'h':
+ if (lstreq("refres", name, 6)) {
+ return NGHTTP2_TOKEN_REFRESH;
+ }
+ break;
+ case 'r':
+ if (lstreq("refere", name, 6)) {
+ return NGHTTP2_TOKEN_REFERER;
+ }
+ break;
+ case 's':
+ if (lstreq(":statu", name, 6)) {
+ return NGHTTP2_TOKEN__STATUS;
+ }
+ if (lstreq("expire", name, 6)) {
+ return NGHTTP2_TOKEN_EXPIRES;
+ }
+ break;
+ }
+ break;
+ case 8:
+ switch (name[7]) {
+ case 'e':
+ if (lstreq("if-rang", name, 7)) {
+ return NGHTTP2_TOKEN_IF_RANGE;
+ }
+ break;
+ case 'h':
+ if (lstreq("if-matc", name, 7)) {
+ return NGHTTP2_TOKEN_IF_MATCH;
+ }
+ break;
+ case 'n':
+ if (lstreq("locatio", name, 7)) {
+ return NGHTTP2_TOKEN_LOCATION;
+ }
+ break;
+ }
+ break;
+ case 10:
+ switch (name[9]) {
+ case 'e':
+ if (lstreq("keep-aliv", name, 9)) {
+ return NGHTTP2_TOKEN_KEEP_ALIVE;
+ }
+ if (lstreq("set-cooki", name, 9)) {
+ return NGHTTP2_TOKEN_SET_COOKIE;
+ }
+ break;
+ case 'n':
+ if (lstreq("connectio", name, 9)) {
+ return NGHTTP2_TOKEN_CONNECTION;
+ }
+ break;
+ case 't':
+ if (lstreq("user-agen", name, 9)) {
+ return NGHTTP2_TOKEN_USER_AGENT;
+ }
+ break;
+ case 'y':
+ if (lstreq(":authorit", name, 9)) {
+ return NGHTTP2_TOKEN__AUTHORITY;
+ }
+ break;
+ }
+ break;
+ case 11:
+ switch (name[10]) {
+ case 'r':
+ if (lstreq("retry-afte", name, 10)) {
+ return NGHTTP2_TOKEN_RETRY_AFTER;
+ }
+ break;
+ }
+ break;
+ case 12:
+ switch (name[11]) {
+ case 'e':
+ if (lstreq("content-typ", name, 11)) {
+ return NGHTTP2_TOKEN_CONTENT_TYPE;
+ }
+ break;
+ case 's':
+ if (lstreq("max-forward", name, 11)) {
+ return NGHTTP2_TOKEN_MAX_FORWARDS;
+ }
+ break;
+ }
+ break;
+ case 13:
+ switch (name[12]) {
+ case 'd':
+ if (lstreq("last-modifie", name, 12)) {
+ return NGHTTP2_TOKEN_LAST_MODIFIED;
+ }
+ break;
+ case 'e':
+ if (lstreq("content-rang", name, 12)) {
+ return NGHTTP2_TOKEN_CONTENT_RANGE;
+ }
+ break;
+ case 'h':
+ if (lstreq("if-none-matc", name, 12)) {
+ return NGHTTP2_TOKEN_IF_NONE_MATCH;
+ }
+ break;
+ case 'l':
+ if (lstreq("cache-contro", name, 12)) {
+ return NGHTTP2_TOKEN_CACHE_CONTROL;
+ }
+ break;
+ case 'n':
+ if (lstreq("authorizatio", name, 12)) {
+ return NGHTTP2_TOKEN_AUTHORIZATION;
+ }
+ break;
+ case 's':
+ if (lstreq("accept-range", name, 12)) {
+ return NGHTTP2_TOKEN_ACCEPT_RANGES;
+ }
+ break;
+ }
+ break;
+ case 14:
+ switch (name[13]) {
+ case 'h':
+ if (lstreq("content-lengt", name, 13)) {
+ return NGHTTP2_TOKEN_CONTENT_LENGTH;
+ }
+ break;
+ case 't':
+ if (lstreq("accept-charse", name, 13)) {
+ return NGHTTP2_TOKEN_ACCEPT_CHARSET;
+ }
+ break;
+ }
+ break;
+ case 15:
+ switch (name[14]) {
+ case 'e':
+ if (lstreq("accept-languag", name, 14)) {
+ return NGHTTP2_TOKEN_ACCEPT_LANGUAGE;
+ }
+ break;
+ case 'g':
+ if (lstreq("accept-encodin", name, 14)) {
+ return NGHTTP2_TOKEN_ACCEPT_ENCODING;
+ }
+ break;
+ }
+ break;
+ case 16:
+ switch (name[15]) {
+ case 'e':
+ if (lstreq("content-languag", name, 15)) {
+ return NGHTTP2_TOKEN_CONTENT_LANGUAGE;
+ }
+ if (lstreq("www-authenticat", name, 15)) {
+ return NGHTTP2_TOKEN_WWW_AUTHENTICATE;
+ }
+ break;
+ case 'g':
+ if (lstreq("content-encodin", name, 15)) {
+ return NGHTTP2_TOKEN_CONTENT_ENCODING;
+ }
+ break;
+ case 'n':
+ if (lstreq("content-locatio", name, 15)) {
+ return NGHTTP2_TOKEN_CONTENT_LOCATION;
+ }
+ if (lstreq("proxy-connectio", name, 15)) {
+ return NGHTTP2_TOKEN_PROXY_CONNECTION;
+ }
+ break;
+ }
+ break;
+ case 17:
+ switch (name[16]) {
+ case 'e':
+ if (lstreq("if-modified-sinc", name, 16)) {
+ return NGHTTP2_TOKEN_IF_MODIFIED_SINCE;
+ }
+ break;
+ case 'g':
+ if (lstreq("transfer-encodin", name, 16)) {
+ return NGHTTP2_TOKEN_TRANSFER_ENCODING;
+ }
+ break;
+ }
+ break;
+ case 18:
+ switch (name[17]) {
+ case 'e':
+ if (lstreq("proxy-authenticat", name, 17)) {
+ return NGHTTP2_TOKEN_PROXY_AUTHENTICATE;
+ }
+ break;
+ }
+ break;
+ case 19:
+ switch (name[18]) {
+ case 'e':
+ if (lstreq("if-unmodified-sinc", name, 18)) {
+ return NGHTTP2_TOKEN_IF_UNMODIFIED_SINCE;
+ }
+ break;
+ case 'n':
+ if (lstreq("content-dispositio", name, 18)) {
+ return NGHTTP2_TOKEN_CONTENT_DISPOSITION;
+ }
+ if (lstreq("proxy-authorizatio", name, 18)) {
+ return NGHTTP2_TOKEN_PROXY_AUTHORIZATION;
+ }
+ break;
+ }
+ break;
+ case 25:
+ switch (name[24]) {
+ case 'y':
+ if (lstreq("strict-transport-securit", name, 24)) {
+ return NGHTTP2_TOKEN_STRICT_TRANSPORT_SECURITY;
+ }
+ break;
+ }
+ break;
+ case 27:
+ switch (name[26]) {
+ case 'n':
+ if (lstreq("access-control-allow-origi", name, 26)) {
+ return NGHTTP2_TOKEN_ACCESS_CONTROL_ALLOW_ORIGIN;
+ }
+ break;
+ }
+ break;
+ }
+ return -1;
+}
+
+void nghttp2_hd_entry_init(nghttp2_hd_entry *ent, nghttp2_hd_nv *nv) {
+ ent->nv = *nv;
+ ent->cnv.name = nv->name->base;
+ ent->cnv.namelen = nv->name->len;
+ ent->cnv.value = nv->value->base;
+ ent->cnv.valuelen = nv->value->len;
+ ent->cnv.flags = nv->flags;
+ ent->next = NULL;
+ ent->hash = 0;
+
+ nghttp2_rcbuf_incref(ent->nv.name);
+ nghttp2_rcbuf_incref(ent->nv.value);
+}
+
+void nghttp2_hd_entry_free(nghttp2_hd_entry *ent) {
+ nghttp2_rcbuf_decref(ent->nv.value);
+ nghttp2_rcbuf_decref(ent->nv.name);
+}
+
+static int name_eq(const nghttp2_hd_nv *a, const nghttp2_nv *b) {
+ return a->name->len == b->namelen &&
+ memeq(a->name->base, b->name, b->namelen);
+}
+
+static int value_eq(const nghttp2_hd_nv *a, const nghttp2_nv *b) {
+ return a->value->len == b->valuelen &&
+ memeq(a->value->base, b->value, b->valuelen);
+}
+
+static uint32_t name_hash(const nghttp2_nv *nv) {
+ /* 32 bit FNV-1a: http://isthe.com/chongo/tech/comp/fnv/ */
+ uint32_t h = 2166136261u;
+ size_t i;
+
+ for (i = 0; i < nv->namelen; ++i) {
+ h ^= nv->name[i];
+ h += (h << 1) + (h << 4) + (h << 7) + (h << 8) + (h << 24);
+ }
+
+ return h;
+}
+
+static void hd_map_init(nghttp2_hd_map *map) {
+ memset(map, 0, sizeof(nghttp2_hd_map));
+}
+
+static void hd_map_insert(nghttp2_hd_map *map, nghttp2_hd_entry *ent) {
+ nghttp2_hd_entry **bucket;
+
+ bucket = &map->table[ent->hash & (HD_MAP_SIZE - 1)];
+
+ if (*bucket == NULL) {
+ *bucket = ent;
+ return;
+ }
+
+ /* lower index is linked near the root */
+ ent->next = *bucket;
+ *bucket = ent;
+}
+
+static nghttp2_hd_entry *hd_map_find(nghttp2_hd_map *map, int *exact_match,
+ const nghttp2_nv *nv, int32_t token,
+ uint32_t hash, int name_only) {
+ nghttp2_hd_entry *p;
+ nghttp2_hd_entry *res = NULL;
+
+ *exact_match = 0;
+
+ for (p = map->table[hash & (HD_MAP_SIZE - 1)]; p; p = p->next) {
+ if (token != p->nv.token ||
+ (token == -1 && (hash != p->hash || !name_eq(&p->nv, nv)))) {
+ continue;
+ }
+ if (!res) {
+ res = p;
+ if (name_only) {
+ break;
+ }
+ }
+ if (value_eq(&p->nv, nv)) {
+ res = p;
+ *exact_match = 1;
+ break;
+ }
+ }
+
+ return res;
+}
+
+static void hd_map_remove(nghttp2_hd_map *map, nghttp2_hd_entry *ent) {
+ nghttp2_hd_entry **dst;
+
+ dst = &map->table[ent->hash & (HD_MAP_SIZE - 1)];
+
+ for (; *dst; dst = &(*dst)->next) {
+ if (*dst != ent) {
+ continue;
+ }
+
+ *dst = ent->next;
+ ent->next = NULL;
+ return;
+ }
+}
+
+static int hd_ringbuf_init(nghttp2_hd_ringbuf *ringbuf, size_t bufsize,
+ nghttp2_mem *mem) {
+ size_t size;
+ for (size = 1; size < bufsize; size <<= 1)
+ ;
+ ringbuf->buffer = nghttp2_mem_malloc(mem, sizeof(nghttp2_hd_entry *) * size);
+ if (ringbuf->buffer == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+ ringbuf->mask = size - 1;
+ ringbuf->first = 0;
+ ringbuf->len = 0;
+ return 0;
+}
+
+static nghttp2_hd_entry *hd_ringbuf_get(nghttp2_hd_ringbuf *ringbuf,
+ size_t idx) {
+ assert(idx < ringbuf->len);
+ return ringbuf->buffer[(ringbuf->first + idx) & ringbuf->mask];
+}
+
+static int hd_ringbuf_reserve(nghttp2_hd_ringbuf *ringbuf, size_t bufsize,
+ nghttp2_mem *mem) {
+ size_t i;
+ size_t size;
+ nghttp2_hd_entry **buffer;
+
+ if (ringbuf->mask + 1 >= bufsize) {
+ return 0;
+ }
+ for (size = 1; size < bufsize; size <<= 1)
+ ;
+ buffer = nghttp2_mem_malloc(mem, sizeof(nghttp2_hd_entry *) * size);
+ if (buffer == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+ for (i = 0; i < ringbuf->len; ++i) {
+ buffer[i] = hd_ringbuf_get(ringbuf, i);
+ }
+ nghttp2_mem_free(mem, ringbuf->buffer);
+ ringbuf->buffer = buffer;
+ ringbuf->mask = size - 1;
+ ringbuf->first = 0;
+ return 0;
+}
+
+static void hd_ringbuf_free(nghttp2_hd_ringbuf *ringbuf, nghttp2_mem *mem) {
+ size_t i;
+ if (ringbuf == NULL) {
+ return;
+ }
+ for (i = 0; i < ringbuf->len; ++i) {
+ nghttp2_hd_entry *ent = hd_ringbuf_get(ringbuf, i);
+
+ nghttp2_hd_entry_free(ent);
+ nghttp2_mem_free(mem, ent);
+ }
+ nghttp2_mem_free(mem, ringbuf->buffer);
+}
+
+static int hd_ringbuf_push_front(nghttp2_hd_ringbuf *ringbuf,
+ nghttp2_hd_entry *ent, nghttp2_mem *mem) {
+ int rv;
+
+ rv = hd_ringbuf_reserve(ringbuf, ringbuf->len + 1, mem);
+
+ if (rv != 0) {
+ return rv;
+ }
+
+ ringbuf->buffer[--ringbuf->first & ringbuf->mask] = ent;
+ ++ringbuf->len;
+
+ return 0;
+}
+
+static void hd_ringbuf_pop_back(nghttp2_hd_ringbuf *ringbuf) {
+ assert(ringbuf->len > 0);
+ --ringbuf->len;
+}
+
+static int hd_context_init(nghttp2_hd_context *context, nghttp2_mem *mem) {
+ int rv;
+ context->mem = mem;
+ context->bad = 0;
+ context->hd_table_bufsize_max = NGHTTP2_HD_DEFAULT_MAX_BUFFER_SIZE;
+ rv = hd_ringbuf_init(&context->hd_table, context->hd_table_bufsize_max /
+ NGHTTP2_HD_ENTRY_OVERHEAD,
+ mem);
+ if (rv != 0) {
+ return rv;
+ }
+
+ context->hd_table_bufsize = 0;
+ context->next_seq = 0;
+
+ return 0;
+}
+
+static void hd_context_free(nghttp2_hd_context *context) {
+ hd_ringbuf_free(&context->hd_table, context->mem);
+}
+
+int nghttp2_hd_deflate_init(nghttp2_hd_deflater *deflater, nghttp2_mem *mem) {
+ return nghttp2_hd_deflate_init2(
+ deflater, NGHTTP2_HD_DEFAULT_MAX_DEFLATE_BUFFER_SIZE, mem);
+}
+
+int nghttp2_hd_deflate_init2(nghttp2_hd_deflater *deflater,
+ size_t deflate_hd_table_bufsize_max,
+ nghttp2_mem *mem) {
+ int rv;
+ rv = hd_context_init(&deflater->ctx, mem);
+ if (rv != 0) {
+ return rv;
+ }
+
+ hd_map_init(&deflater->map);
+
+ if (deflate_hd_table_bufsize_max < NGHTTP2_HD_DEFAULT_MAX_BUFFER_SIZE) {
+ deflater->notify_table_size_change = 1;
+ deflater->ctx.hd_table_bufsize_max = deflate_hd_table_bufsize_max;
+ } else {
+ deflater->notify_table_size_change = 0;
+ }
+
+ deflater->deflate_hd_table_bufsize_max = deflate_hd_table_bufsize_max;
+ deflater->min_hd_table_bufsize_max = UINT32_MAX;
+
+ return 0;
+}
+
+int nghttp2_hd_inflate_init(nghttp2_hd_inflater *inflater, nghttp2_mem *mem) {
+ int rv;
+
+ rv = hd_context_init(&inflater->ctx, mem);
+ if (rv != 0) {
+ goto fail;
+ }
+
+ inflater->settings_hd_table_bufsize_max = NGHTTP2_HD_DEFAULT_MAX_BUFFER_SIZE;
+ inflater->min_hd_table_bufsize_max = UINT32_MAX;
+
+ inflater->nv_name_keep = NULL;
+ inflater->nv_value_keep = NULL;
+
+ inflater->opcode = NGHTTP2_HD_OPCODE_NONE;
+ inflater->state = NGHTTP2_HD_STATE_INFLATE_START;
+
+ nghttp2_buf_init(&inflater->namebuf);
+ nghttp2_buf_init(&inflater->valuebuf);
+
+ inflater->namercbuf = NULL;
+ inflater->valuercbuf = NULL;
+
+ inflater->huffman_encoded = 0;
+ inflater->index = 0;
+ inflater->left = 0;
+ inflater->shift = 0;
+ inflater->index_required = 0;
+ inflater->no_index = 0;
+
+ return 0;
+
+fail:
+ return rv;
+}
+
+static void hd_inflate_keep_free(nghttp2_hd_inflater *inflater) {
+ nghttp2_rcbuf_decref(inflater->nv_value_keep);
+ nghttp2_rcbuf_decref(inflater->nv_name_keep);
+
+ inflater->nv_value_keep = NULL;
+ inflater->nv_name_keep = NULL;
+}
+
+void nghttp2_hd_deflate_free(nghttp2_hd_deflater *deflater) {
+ hd_context_free(&deflater->ctx);
+}
+
+void nghttp2_hd_inflate_free(nghttp2_hd_inflater *inflater) {
+ hd_inflate_keep_free(inflater);
+
+ nghttp2_rcbuf_decref(inflater->valuercbuf);
+ nghttp2_rcbuf_decref(inflater->namercbuf);
+
+ hd_context_free(&inflater->ctx);
+}
+
+static size_t entry_room(size_t namelen, size_t valuelen) {
+ return NGHTTP2_HD_ENTRY_OVERHEAD + namelen + valuelen;
+}
+
+static int emit_header(nghttp2_hd_nv *nv_out, nghttp2_hd_nv *nv) {
+ DEBUGF(fprintf(stderr, "inflatehd: header emission: %s: %s\n", nv->name->base,
+ nv->value->base));
+ /* ent->ref may be 0. This happens if the encoder emits literal
+ block larger than header table capacity with indexing. */
+ *nv_out = *nv;
+
+ return 0;
+}
+
+static size_t count_encoded_length(size_t n, size_t prefix) {
+ size_t k = (size_t)((1 << prefix) - 1);
+ size_t len = 0;
+
+ if (n < k) {
+ return 1;
+ }
+
+ n -= k;
+ ++len;
+
+ for (; n >= 128; n >>= 7, ++len)
+ ;
+
+ return len + 1;
+}
+
+static size_t encode_length(uint8_t *buf, size_t n, size_t prefix) {
+ size_t k = (size_t)((1 << prefix) - 1);
+ uint8_t *begin = buf;
+
+ *buf = (uint8_t)(*buf & ~k);
+
+ if (n < k) {
+ *buf = (uint8_t)(*buf | n);
+ return 1;
+ }
+
+ *buf = (uint8_t)(*buf | k);
+ ++buf;
+
+ n -= k;
+
+ for (; n >= 128; n >>= 7) {
+ *buf++ = (uint8_t)((1 << 7) | (n & 0x7f));
+ }
+
+ *buf++ = (uint8_t)n;
+
+ return (size_t)(buf - begin);
+}
+
+/*
+ * Decodes |prefix| prefixed integer stored from |in|. The |last|
+ * represents the 1 beyond the last of the valid contiguous memory
+ * region from |in|. The decoded integer must be less than or equal
+ * to UINT32_MAX.
+ *
+ * If the |initial| is nonzero, it is used as a initial value, this
+ * function assumes the |in| starts with intermediate data.
+ *
+ * An entire integer is decoded successfully, decoded, the |*final| is
+ * set to nonzero.
+ *
+ * This function stores the decoded integer in |*res| if it succeed,
+ * including partial decoding (in this case, number of shift to make
+ * in the next call will be stored in |*shift_ptr|) and returns number
+ * of bytes processed, or returns -1, indicating decoding error.
+ */
+static ssize_t decode_length(uint32_t *res, size_t *shift_ptr, int *final,
+ uint32_t initial, size_t shift, const uint8_t *in,
+ const uint8_t *last, size_t prefix) {
+ uint32_t k = (uint8_t)((1 << prefix) - 1);
+ uint32_t n = initial;
+ const uint8_t *start = in;
+
+ *shift_ptr = 0;
+ *final = 0;
+
+ if (n == 0) {
+ if ((*in & k) != k) {
+ *res = (*in) & k;
+ *final = 1;
+ return 1;
+ }
+
+ n = k;
+
+ if (++in == last) {
+ *res = n;
+ return (ssize_t)(in - start);
+ }
+ }
+
+ for (; in != last; ++in, shift += 7) {
+ uint32_t add = *in & 0x7f;
+
+ if ((UINT32_MAX >> shift) < add) {
+ DEBUGF(fprintf(stderr, "inflate: integer overflow on shift\n"));
+ return -1;
+ }
+
+ add <<= shift;
+
+ if (UINT32_MAX - add < n) {
+ DEBUGF(fprintf(stderr, "inflate: integer overflow on addition\n"));
+ return -1;
+ }
+
+ n += add;
+
+ if ((*in & (1 << 7)) == 0) {
+ break;
+ }
+ }
+
+ *shift_ptr = shift;
+
+ if (in == last) {
+ *res = n;
+ return (ssize_t)(in - start);
+ }
+
+ *res = n;
+ *final = 1;
+ return (ssize_t)(in + 1 - start);
+}
+
+static int emit_table_size(nghttp2_bufs *bufs, size_t table_size) {
+ int rv;
+ uint8_t *bufp;
+ size_t blocklen;
+ uint8_t sb[16];
+
+ DEBUGF(fprintf(stderr, "deflatehd: emit table_size=%zu\n", table_size));
+
+ blocklen = count_encoded_length(table_size, 5);
+
+ if (sizeof(sb) < blocklen) {
+ return NGHTTP2_ERR_HEADER_COMP;
+ }
+
+ bufp = sb;
+
+ *bufp = 0x20u;
+
+ encode_length(bufp, table_size, 5);
+
+ rv = nghttp2_bufs_add(bufs, sb, blocklen);
+ if (rv != 0) {
+ return rv;
+ }
+
+ return 0;
+}
+
+static int emit_indexed_block(nghttp2_bufs *bufs, size_t idx) {
+ int rv;
+ size_t blocklen;
+ uint8_t sb[16];
+ uint8_t *bufp;
+
+ blocklen = count_encoded_length(idx + 1, 7);
+
+ DEBUGF(fprintf(stderr, "deflatehd: emit indexed index=%zu, %zu bytes\n", idx,
+ blocklen));
+
+ if (sizeof(sb) < blocklen) {
+ return NGHTTP2_ERR_HEADER_COMP;
+ }
+
+ bufp = sb;
+ *bufp = 0x80u;
+ encode_length(bufp, idx + 1, 7);
+
+ rv = nghttp2_bufs_add(bufs, sb, blocklen);
+ if (rv != 0) {
+ return rv;
+ }
+
+ return 0;
+}
+
+static int emit_string(nghttp2_bufs *bufs, const uint8_t *str, size_t len) {
+ int rv;
+ uint8_t sb[16];
+ uint8_t *bufp;
+ size_t blocklen;
+ size_t enclen;
+ int huffman = 0;
+
+ enclen = nghttp2_hd_huff_encode_count(str, len);
+
+ if (enclen < len) {
+ huffman = 1;
+ } else {
+ enclen = len;
+ }
+
+ blocklen = count_encoded_length(enclen, 7);
+
+ DEBUGF(fprintf(stderr, "deflatehd: emit string str="));
+ DEBUGF(fwrite(str, 1, len, stderr));
+ DEBUGF(fprintf(stderr, ", length=%zu, huffman=%d, encoded_length=%zu\n", len,
+ huffman, enclen));
+
+ if (sizeof(sb) < blocklen) {
+ return NGHTTP2_ERR_HEADER_COMP;
+ }
+
+ bufp = sb;
+ *bufp = huffman ? 1 << 7 : 0;
+ encode_length(bufp, enclen, 7);
+
+ rv = nghttp2_bufs_add(bufs, sb, blocklen);
+ if (rv != 0) {
+ return rv;
+ }
+
+ if (huffman) {
+ rv = nghttp2_hd_huff_encode(bufs, str, len);
+ } else {
+ assert(enclen == len);
+ rv = nghttp2_bufs_add(bufs, str, len);
+ }
+
+ return rv;
+}
+
+static uint8_t pack_first_byte(int indexing_mode) {
+ switch (indexing_mode) {
+ case NGHTTP2_HD_WITH_INDEXING:
+ return 0x40u;
+ case NGHTTP2_HD_WITHOUT_INDEXING:
+ return 0;
+ case NGHTTP2_HD_NEVER_INDEXING:
+ return 0x10u;
+ default:
+ assert(0);
+ }
+ /* This is required to compile with android NDK r10d +
+ --enable-werror */
+ return 0;
+}
+
+static int emit_indname_block(nghttp2_bufs *bufs, size_t idx,
+ const nghttp2_nv *nv, int indexing_mode) {
+ int rv;
+ uint8_t *bufp;
+ size_t blocklen;
+ uint8_t sb[16];
+ size_t prefixlen;
+
+ if (indexing_mode == NGHTTP2_HD_WITH_INDEXING) {
+ prefixlen = 6;
+ } else {
+ prefixlen = 4;
+ }
+
+ DEBUGF(fprintf(stderr, "deflatehd: emit indname index=%zu, valuelen=%zu, "
+ "indexing_mode=%d\n",
+ idx, nv->valuelen, indexing_mode));
+
+ blocklen = count_encoded_length(idx + 1, prefixlen);
+
+ if (sizeof(sb) < blocklen) {
+ return NGHTTP2_ERR_HEADER_COMP;
+ }
+
+ bufp = sb;
+
+ *bufp = pack_first_byte(indexing_mode);
+
+ encode_length(bufp, idx + 1, prefixlen);
+
+ rv = nghttp2_bufs_add(bufs, sb, blocklen);
+ if (rv != 0) {
+ return rv;
+ }
+
+ rv = emit_string(bufs, nv->value, nv->valuelen);
+ if (rv != 0) {
+ return rv;
+ }
+
+ return 0;
+}
+
+static int emit_newname_block(nghttp2_bufs *bufs, const nghttp2_nv *nv,
+ int indexing_mode) {
+ int rv;
+
+ DEBUGF(fprintf(stderr, "deflatehd: emit newname namelen=%zu, valuelen=%zu, "
+ "indexing_mode=%d\n",
+ nv->namelen, nv->valuelen, indexing_mode));
+
+ rv = nghttp2_bufs_addb(bufs, pack_first_byte(indexing_mode));
+ if (rv != 0) {
+ return rv;
+ }
+
+ rv = emit_string(bufs, nv->name, nv->namelen);
+ if (rv != 0) {
+ return rv;
+ }
+
+ rv = emit_string(bufs, nv->value, nv->valuelen);
+ if (rv != 0) {
+ return rv;
+ }
+
+ return 0;
+}
+
+static int add_hd_table_incremental(nghttp2_hd_context *context,
+ nghttp2_hd_nv *nv, nghttp2_hd_map *map,
+ uint32_t hash) {
+ int rv;
+ nghttp2_hd_entry *new_ent;
+ size_t room;
+ nghttp2_mem *mem;
+
+ mem = context->mem;
+ room = entry_room(nv->name->len, nv->value->len);
+
+ while (context->hd_table_bufsize + room > context->hd_table_bufsize_max &&
+ context->hd_table.len > 0) {
+
+ size_t idx = context->hd_table.len - 1;
+ nghttp2_hd_entry *ent = hd_ringbuf_get(&context->hd_table, idx);
+
+ context->hd_table_bufsize -=
+ entry_room(ent->nv.name->len, ent->nv.value->len);
+
+ DEBUGF(fprintf(stderr, "hpack: remove item from header table: %s: %s\n",
+ (char *)ent->nv.name->base, (char *)ent->nv.value->base));
+
+ hd_ringbuf_pop_back(&context->hd_table);
+ if (map) {
+ hd_map_remove(map, ent);
+ }
+
+ nghttp2_hd_entry_free(ent);
+ nghttp2_mem_free(mem, ent);
+ }
+
+ if (room > context->hd_table_bufsize_max) {
+ /* The entry taking more than NGHTTP2_HD_MAX_BUFFER_SIZE is
+ immediately evicted. So we don't allocate memory for it. */
+ return 0;
+ }
+
+ new_ent = nghttp2_mem_malloc(mem, sizeof(nghttp2_hd_entry));
+ if (new_ent == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ nghttp2_hd_entry_init(new_ent, nv);
+
+ rv = hd_ringbuf_push_front(&context->hd_table, new_ent, mem);
+
+ if (rv != 0) {
+ nghttp2_hd_entry_free(new_ent);
+ nghttp2_mem_free(mem, new_ent);
+
+ return rv;
+ }
+
+ new_ent->seq = context->next_seq++;
+ new_ent->hash = hash;
+
+ if (map) {
+ hd_map_insert(map, new_ent);
+ }
+
+ context->hd_table_bufsize += room;
+
+ return 0;
+}
+
+typedef struct {
+ ssize_t index;
+ /* Nonzero if both name and value are matched. */
+ int name_value_match;
+} search_result;
+
+static search_result search_static_table(const nghttp2_nv *nv, int32_t token,
+ int name_only) {
+ search_result res = {token, 0};
+ int i;
+ nghttp2_hd_static_entry *ent;
+
+ if (name_only) {
+ return res;
+ }
+
+ for (i = token;
+ i <= NGHTTP2_TOKEN_WWW_AUTHENTICATE && static_table[i].token == token;
+ ++i) {
+ ent = &static_table[i];
+ if (ent->value.len == nv->valuelen &&
+ memcmp(ent->value.base, nv->value, nv->valuelen) == 0) {
+ res.index = i;
+ res.name_value_match = 1;
+ return res;
+ }
+ }
+ return res;
+}
+
+static search_result search_hd_table(nghttp2_hd_context *context,
+ const nghttp2_nv *nv, int32_t token,
+ int indexing_mode, nghttp2_hd_map *map,
+ uint32_t hash) {
+ search_result res = {-1, 0};
+ nghttp2_hd_entry *ent;
+ int exact_match;
+ int name_only = indexing_mode == NGHTTP2_HD_NEVER_INDEXING;
+
+ exact_match = 0;
+ ent = hd_map_find(map, &exact_match, nv, token, hash, name_only);
+
+ if (!exact_match && token >= 0 && token <= NGHTTP2_TOKEN_WWW_AUTHENTICATE) {
+ return search_static_table(nv, token, name_only);
+ }
+
+ if (ent == NULL) {
+ return res;
+ }
+
+ res.index =
+ (ssize_t)(context->next_seq - 1 - ent->seq + NGHTTP2_STATIC_TABLE_LENGTH);
+ res.name_value_match = exact_match;
+
+ return res;
+}
+
+static void hd_context_shrink_table_size(nghttp2_hd_context *context,
+ nghttp2_hd_map *map) {
+ nghttp2_mem *mem;
+
+ mem = context->mem;
+
+ while (context->hd_table_bufsize > context->hd_table_bufsize_max &&
+ context->hd_table.len > 0) {
+ size_t idx = context->hd_table.len - 1;
+ nghttp2_hd_entry *ent = hd_ringbuf_get(&context->hd_table, idx);
+ context->hd_table_bufsize -=
+ entry_room(ent->nv.name->len, ent->nv.value->len);
+ hd_ringbuf_pop_back(&context->hd_table);
+ if (map) {
+ hd_map_remove(map, ent);
+ }
+
+ nghttp2_hd_entry_free(ent);
+ nghttp2_mem_free(mem, ent);
+ }
+}
+
+int nghttp2_hd_deflate_change_table_size(nghttp2_hd_deflater *deflater,
+ size_t settings_hd_table_bufsize_max) {
+ size_t next_bufsize = nghttp2_min(settings_hd_table_bufsize_max,
+ deflater->deflate_hd_table_bufsize_max);
+
+ deflater->ctx.hd_table_bufsize_max = next_bufsize;
+
+ deflater->min_hd_table_bufsize_max =
+ nghttp2_min(deflater->min_hd_table_bufsize_max, next_bufsize);
+
+ deflater->notify_table_size_change = 1;
+
+ hd_context_shrink_table_size(&deflater->ctx, &deflater->map);
+ return 0;
+}
+
+int nghttp2_hd_inflate_change_table_size(nghttp2_hd_inflater *inflater,
+ size_t settings_hd_table_bufsize_max) {
+ switch (inflater->state) {
+ case NGHTTP2_HD_STATE_EXPECT_TABLE_SIZE:
+ case NGHTTP2_HD_STATE_INFLATE_START:
+ break;
+ default:
+ return NGHTTP2_ERR_INVALID_STATE;
+ }
+
+ /* It seems that encoder is not required to send dynamic table size
+ update if the table size is not changed after applying
+ SETTINGS_HEADER_TABLE_SIZE. RFC 7541 is ambiguous here, but this
+ is the intention of the editor. If new maximum table size is
+ strictly smaller than the current negotiated maximum size,
+ encoder must send dynamic table size update. In other cases, we
+ cannot expect it to do so. */
+ if (inflater->ctx.hd_table_bufsize_max > settings_hd_table_bufsize_max) {
+ inflater->state = NGHTTP2_HD_STATE_EXPECT_TABLE_SIZE;
+ /* Remember minimum value, and validate that encoder sends the
+ value less than or equal to this. */
+ inflater->min_hd_table_bufsize_max = settings_hd_table_bufsize_max;
+ }
+
+ inflater->settings_hd_table_bufsize_max = settings_hd_table_bufsize_max;
+
+ inflater->ctx.hd_table_bufsize_max = settings_hd_table_bufsize_max;
+
+ hd_context_shrink_table_size(&inflater->ctx, NULL);
+ return 0;
+}
+
+#define INDEX_RANGE_VALID(context, idx) \
+ ((idx) < (context)->hd_table.len + NGHTTP2_STATIC_TABLE_LENGTH)
+
+static size_t get_max_index(nghttp2_hd_context *context) {
+ return context->hd_table.len + NGHTTP2_STATIC_TABLE_LENGTH;
+}
+
+nghttp2_hd_nv nghttp2_hd_table_get(nghttp2_hd_context *context, size_t idx) {
+ assert(INDEX_RANGE_VALID(context, idx));
+ if (idx >= NGHTTP2_STATIC_TABLE_LENGTH) {
+ return hd_ringbuf_get(&context->hd_table, idx - NGHTTP2_STATIC_TABLE_LENGTH)
+ ->nv;
+ } else {
+ nghttp2_hd_static_entry *ent = &static_table[idx];
+ nghttp2_hd_nv nv = {&ent->name, &ent->value, ent->token,
+ NGHTTP2_NV_FLAG_NONE};
+ return nv;
+ }
+}
+
+static const nghttp2_nv *nghttp2_hd_table_get2(nghttp2_hd_context *context,
+ size_t idx) {
+ assert(INDEX_RANGE_VALID(context, idx));
+ if (idx >= NGHTTP2_STATIC_TABLE_LENGTH) {
+ return &hd_ringbuf_get(&context->hd_table,
+ idx - NGHTTP2_STATIC_TABLE_LENGTH)->cnv;
+ }
+
+ return &static_table[idx].cnv;
+}
+
+static int hd_deflate_decide_indexing(nghttp2_hd_deflater *deflater,
+ const nghttp2_nv *nv, int32_t token) {
+ if (token == NGHTTP2_TOKEN__PATH || token == NGHTTP2_TOKEN_AGE ||
+ token == NGHTTP2_TOKEN_CONTENT_LENGTH || token == NGHTTP2_TOKEN_ETAG ||
+ token == NGHTTP2_TOKEN_IF_MODIFIED_SINCE ||
+ token == NGHTTP2_TOKEN_IF_NONE_MATCH || token == NGHTTP2_TOKEN_LOCATION ||
+ token == NGHTTP2_TOKEN_SET_COOKIE ||
+ entry_room(nv->namelen, nv->valuelen) >
+ deflater->ctx.hd_table_bufsize_max * 3 / 4) {
+ return NGHTTP2_HD_WITHOUT_INDEXING;
+ }
+
+ return NGHTTP2_HD_WITH_INDEXING;
+}
+
+static int deflate_nv(nghttp2_hd_deflater *deflater, nghttp2_bufs *bufs,
+ const nghttp2_nv *nv) {
+ int rv;
+ search_result res;
+ ssize_t idx;
+ int indexing_mode;
+ int32_t token;
+ nghttp2_mem *mem;
+ uint32_t hash = 0;
+
+ DEBUGF(fprintf(stderr, "deflatehd: deflating %.*s: %.*s\n", (int)nv->namelen,
+ nv->name, (int)nv->valuelen, nv->value));
+
+ mem = deflater->ctx.mem;
+
+ token = lookup_token(nv->name, nv->namelen);
+ if (token == -1) {
+ hash = name_hash(nv);
+ } else if (token <= NGHTTP2_TOKEN_WWW_AUTHENTICATE) {
+ hash = static_table[token].hash;
+ }
+
+ /* Don't index authorization header field since it may contain low
+ entropy secret data (e.g., id/password). Also cookie header
+ field with less than 20 bytes value is also never indexed. This
+ is the same criteria used in Firefox codebase. */
+ indexing_mode =
+ token == NGHTTP2_TOKEN_AUTHORIZATION ||
+ (token == NGHTTP2_TOKEN_COOKIE && nv->valuelen < 20) ||
+ (nv->flags & NGHTTP2_NV_FLAG_NO_INDEX)
+ ? NGHTTP2_HD_NEVER_INDEXING
+ : hd_deflate_decide_indexing(deflater, nv, token);
+
+ res = search_hd_table(&deflater->ctx, nv, token, indexing_mode,
+ &deflater->map, hash);
+
+ idx = res.index;
+
+ if (res.name_value_match) {
+
+ DEBUGF(fprintf(stderr, "deflatehd: name/value match index=%zd\n", idx));
+
+ rv = emit_indexed_block(bufs, (size_t)idx);
+ if (rv != 0) {
+ return rv;
+ }
+
+ return 0;
+ }
+
+ if (res.index != -1) {
+ DEBUGF(fprintf(stderr, "deflatehd: name match index=%zd\n", res.index));
+ }
+
+ if (indexing_mode == NGHTTP2_HD_WITH_INDEXING) {
+ nghttp2_hd_nv hd_nv;
+
+ if (idx != -1 && idx < (ssize_t)NGHTTP2_STATIC_TABLE_LENGTH) {
+ hd_nv.name = nghttp2_hd_table_get(&deflater->ctx, (size_t)idx).name;
+ nghttp2_rcbuf_incref(hd_nv.name);
+ } else {
+ rv = nghttp2_rcbuf_new2(&hd_nv.name, nv->name, nv->namelen, mem);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+
+ rv = nghttp2_rcbuf_new2(&hd_nv.value, nv->value, nv->valuelen, mem);
+
+ if (rv != 0) {
+ nghttp2_rcbuf_decref(hd_nv.name);
+ return rv;
+ }
+
+ hd_nv.token = token;
+ hd_nv.flags = NGHTTP2_NV_FLAG_NONE;
+
+ rv = add_hd_table_incremental(&deflater->ctx, &hd_nv, &deflater->map, hash);
+
+ nghttp2_rcbuf_decref(hd_nv.value);
+ nghttp2_rcbuf_decref(hd_nv.name);
+
+ if (rv != 0) {
+ return NGHTTP2_ERR_HEADER_COMP;
+ }
+ }
+ if (idx == -1) {
+ rv = emit_newname_block(bufs, nv, indexing_mode);
+ } else {
+ rv = emit_indname_block(bufs, (size_t)idx, nv, indexing_mode);
+ }
+ if (rv != 0) {
+ return rv;
+ }
+
+ return 0;
+}
+
+int nghttp2_hd_deflate_hd_bufs(nghttp2_hd_deflater *deflater,
+ nghttp2_bufs *bufs, const nghttp2_nv *nv,
+ size_t nvlen) {
+ size_t i;
+ int rv = 0;
+
+ if (deflater->ctx.bad) {
+ return NGHTTP2_ERR_HEADER_COMP;
+ }
+
+ if (deflater->notify_table_size_change) {
+ size_t min_hd_table_bufsize_max;
+
+ min_hd_table_bufsize_max = deflater->min_hd_table_bufsize_max;
+
+ deflater->notify_table_size_change = 0;
+ deflater->min_hd_table_bufsize_max = UINT32_MAX;
+
+ if (deflater->ctx.hd_table_bufsize_max > min_hd_table_bufsize_max) {
+
+ rv = emit_table_size(bufs, min_hd_table_bufsize_max);
+
+ if (rv != 0) {
+ goto fail;
+ }
+ }
+
+ rv = emit_table_size(bufs, deflater->ctx.hd_table_bufsize_max);
+
+ if (rv != 0) {
+ goto fail;
+ }
+ }
+
+ for (i = 0; i < nvlen; ++i) {
+ rv = deflate_nv(deflater, bufs, &nv[i]);
+ if (rv != 0) {
+ goto fail;
+ }
+ }
+
+ DEBUGF(
+ fprintf(stderr, "deflatehd: all input name/value pairs were deflated\n"));
+
+ return 0;
+fail:
+ DEBUGF(fprintf(stderr, "deflatehd: error return %d\n", rv));
+
+ deflater->ctx.bad = 1;
+ return rv;
+}
+
+ssize_t nghttp2_hd_deflate_hd(nghttp2_hd_deflater *deflater, uint8_t *buf,
+ size_t buflen, const nghttp2_nv *nv,
+ size_t nvlen) {
+ nghttp2_bufs bufs;
+ int rv;
+ nghttp2_mem *mem;
+
+ mem = deflater->ctx.mem;
+
+ rv = nghttp2_bufs_wrap_init(&bufs, buf, buflen, mem);
+
+ if (rv != 0) {
+ return rv;
+ }
+
+ rv = nghttp2_hd_deflate_hd_bufs(deflater, &bufs, nv, nvlen);
+
+ buflen = nghttp2_bufs_len(&bufs);
+
+ nghttp2_bufs_wrap_free(&bufs);
+
+ if (rv == NGHTTP2_ERR_BUFFER_ERROR) {
+ return NGHTTP2_ERR_INSUFF_BUFSIZE;
+ }
+
+ if (rv != 0) {
+ return rv;
+ }
+
+ return (ssize_t)buflen;
+}
+
+size_t nghttp2_hd_deflate_bound(nghttp2_hd_deflater *deflater _U_,
+ const nghttp2_nv *nva, size_t nvlen) {
+ size_t n = 0;
+ size_t i;
+
+ /* Possible Maximum Header Table Size Change. Encoding (1u << 31) -
+ 1 using 4 bit prefix requires 6 bytes. We may emit this at most
+ twice. */
+ n += 12;
+
+ /* Use Literal Header Field without indexing - New Name, since it is
+ most space consuming format. Also we choose the less one between
+ non-huffman and huffman, so using literal byte count is
+ sufficient for upper bound.
+
+ Encoding (1u << 31) - 1 using 7 bit prefix requires 6 bytes. We
+ need 2 of this for |nvlen| header fields. */
+ n += 6 * 2 * nvlen;
+
+ for (i = 0; i < nvlen; ++i) {
+ n += nva[i].namelen + nva[i].valuelen;
+ }
+
+ return n;
+}
+
+int nghttp2_hd_deflate_new(nghttp2_hd_deflater **deflater_ptr,
+ size_t deflate_hd_table_bufsize_max) {
+ return nghttp2_hd_deflate_new2(deflater_ptr, deflate_hd_table_bufsize_max,
+ NULL);
+}
+
+int nghttp2_hd_deflate_new2(nghttp2_hd_deflater **deflater_ptr,
+ size_t deflate_hd_table_bufsize_max,
+ nghttp2_mem *mem) {
+ int rv;
+ nghttp2_hd_deflater *deflater;
+
+ if (mem == NULL) {
+ mem = nghttp2_mem_default();
+ }
+
+ deflater = nghttp2_mem_malloc(mem, sizeof(nghttp2_hd_deflater));
+
+ if (deflater == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ rv = nghttp2_hd_deflate_init2(deflater, deflate_hd_table_bufsize_max, mem);
+
+ if (rv != 0) {
+ nghttp2_mem_free(mem, deflater);
+
+ return rv;
+ }
+
+ *deflater_ptr = deflater;
+
+ return 0;
+}
+
+void nghttp2_hd_deflate_del(nghttp2_hd_deflater *deflater) {
+ nghttp2_mem *mem;
+
+ mem = deflater->ctx.mem;
+
+ nghttp2_hd_deflate_free(deflater);
+
+ nghttp2_mem_free(mem, deflater);
+}
+
+static void hd_inflate_set_huffman_encoded(nghttp2_hd_inflater *inflater,
+ const uint8_t *in) {
+ inflater->huffman_encoded = (*in & (1 << 7)) != 0;
+}
+
+/*
+ * Decodes the integer from the range [in, last). The result is
+ * assigned to |inflater->left|. If the |inflater->left| is 0, then
+ * it performs variable integer decoding from scratch. Otherwise, it
+ * uses the |inflater->left| as the initial value and continues to
+ * decode assuming that [in, last) begins with intermediary sequence.
+ *
+ * This function returns the number of bytes read if it succeeds, or
+ * one of the following negative error codes:
+ *
+ * NGHTTP2_ERR_HEADER_COMP
+ * Integer decoding failed
+ */
+static ssize_t hd_inflate_read_len(nghttp2_hd_inflater *inflater, int *rfin,
+ const uint8_t *in, const uint8_t *last,
+ size_t prefix, size_t maxlen) {
+ ssize_t rv;
+ uint32_t out;
+
+ *rfin = 0;
+
+ rv = decode_length(&out, &inflater->shift, rfin, (uint32_t)inflater->left,
+ inflater->shift, in, last, prefix);
+
+ if (rv == -1) {
+ DEBUGF(fprintf(stderr, "inflatehd: integer decoding failed\n"));
+ return NGHTTP2_ERR_HEADER_COMP;
+ }
+
+ if (out > maxlen) {
+ DEBUGF(fprintf(
+ stderr, "inflatehd: integer exceeded the maximum value %zu\n", maxlen));
+ return NGHTTP2_ERR_HEADER_COMP;
+ }
+
+ inflater->left = out;
+
+ DEBUGF(fprintf(stderr, "inflatehd: decoded integer is %u\n", out));
+
+ return rv;
+}
+
+/*
+ * Reads |inflater->left| bytes from the range [in, last) and performs
+ * huffman decoding against them and pushes the result into the
+ * |buffer|.
+ *
+ * This function returns the number of bytes read if it succeeds, or
+ * one of the following negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ * NGHTTP2_ERR_HEADER_COMP
+ * Huffman decoding failed
+ */
+static ssize_t hd_inflate_read_huff(nghttp2_hd_inflater *inflater,
+ nghttp2_buf *buf, const uint8_t *in,
+ const uint8_t *last) {
+ ssize_t readlen;
+ int final = 0;
+ if ((size_t)(last - in) >= inflater->left) {
+ last = in + inflater->left;
+ final = 1;
+ }
+ readlen = nghttp2_hd_huff_decode(&inflater->huff_decode_ctx, buf, in,
+ (size_t)(last - in), final);
+
+ if (readlen < 0) {
+ DEBUGF(fprintf(stderr, "inflatehd: huffman decoding failed\n"));
+ return readlen;
+ }
+ inflater->left -= (size_t)readlen;
+ return readlen;
+}
+
+/*
+ * Reads |inflater->left| bytes from the range [in, last) and copies
+ * them into the |buffer|.
+ *
+ * This function returns the number of bytes read if it succeeds, or
+ * one of the following negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ * NGHTTP2_ERR_HEADER_COMP
+ * Header decompression failed
+ */
+static ssize_t hd_inflate_read(nghttp2_hd_inflater *inflater, nghttp2_buf *buf,
+ const uint8_t *in, const uint8_t *last) {
+ size_t len = nghttp2_min((size_t)(last - in), inflater->left);
+
+ buf->last = nghttp2_cpymem(buf->last, in, len);
+
+ inflater->left -= len;
+ return (ssize_t)len;
+}
+
+/*
+ * Finalize indexed header representation reception. If header is
+ * emitted, |*nv_out| is filled with that value and 0 is returned. If
+ * no header is emitted, 1 is returned.
+ *
+ * This function returns either 0 or 1 if it succeeds, or one of the
+ * following negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+static int hd_inflate_commit_indexed(nghttp2_hd_inflater *inflater,
+ nghttp2_hd_nv *nv_out) {
+ nghttp2_hd_nv nv = nghttp2_hd_table_get(&inflater->ctx, inflater->index);
+
+ emit_header(nv_out, &nv);
+
+ return 0;
+}
+
+/*
+ * Finalize literal header representation - new name- reception. If
+ * header is emitted, |*nv_out| is filled with that value and 0 is
+ * returned.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+static int hd_inflate_commit_newname(nghttp2_hd_inflater *inflater,
+ nghttp2_hd_nv *nv_out) {
+ nghttp2_hd_nv nv;
+ int rv;
+
+ if (inflater->no_index) {
+ nv.flags = NGHTTP2_NV_FLAG_NO_INDEX;
+ } else {
+ nv.flags = NGHTTP2_NV_FLAG_NONE;
+ }
+
+ nv.name = inflater->namercbuf;
+ nv.value = inflater->valuercbuf;
+ nv.token = lookup_token(inflater->namercbuf->base, inflater->namercbuf->len);
+
+ if (inflater->index_required) {
+ rv = add_hd_table_incremental(&inflater->ctx, &nv, NULL, 0);
+
+ if (rv != 0) {
+ return rv;
+ }
+ }
+
+ emit_header(nv_out, &nv);
+
+ inflater->nv_name_keep = nv.name;
+ inflater->nv_value_keep = nv.value;
+
+ inflater->namercbuf = NULL;
+ inflater->valuercbuf = NULL;
+
+ return 0;
+}
+
+/*
+ * Finalize literal header representation - indexed name-
+ * reception. If header is emitted, |*nv_out| is filled with that
+ * value and 0 is returned.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+static int hd_inflate_commit_indname(nghttp2_hd_inflater *inflater,
+ nghttp2_hd_nv *nv_out) {
+ nghttp2_hd_nv nv;
+ int rv;
+
+ nv = nghttp2_hd_table_get(&inflater->ctx, inflater->index);
+
+ if (inflater->no_index) {
+ nv.flags = NGHTTP2_NV_FLAG_NO_INDEX;
+ } else {
+ nv.flags = NGHTTP2_NV_FLAG_NONE;
+ }
+
+ nghttp2_rcbuf_incref(nv.name);
+
+ nv.value = inflater->valuercbuf;
+
+ if (inflater->index_required) {
+ rv = add_hd_table_incremental(&inflater->ctx, &nv, NULL, 0);
+ if (rv != 0) {
+ nghttp2_rcbuf_decref(nv.name);
+ return NGHTTP2_ERR_NOMEM;
+ }
+ }
+
+ emit_header(nv_out, &nv);
+
+ inflater->nv_name_keep = nv.name;
+ inflater->nv_value_keep = nv.value;
+
+ inflater->valuercbuf = NULL;
+
+ return 0;
+}
+
+ssize_t nghttp2_hd_inflate_hd(nghttp2_hd_inflater *inflater, nghttp2_nv *nv_out,
+ int *inflate_flags, uint8_t *in, size_t inlen,
+ int in_final) {
+ return nghttp2_hd_inflate_hd2(inflater, nv_out, inflate_flags, in, inlen,
+ in_final);
+}
+
+ssize_t nghttp2_hd_inflate_hd2(nghttp2_hd_inflater *inflater,
+ nghttp2_nv *nv_out, int *inflate_flags,
+ const uint8_t *in, size_t inlen, int in_final) {
+ ssize_t rv;
+ nghttp2_hd_nv hd_nv;
+
+ rv = nghttp2_hd_inflate_hd_nv(inflater, &hd_nv, inflate_flags, in, inlen,
+ in_final);
+
+ if (rv < 0) {
+ return rv;
+ }
+
+ if (*inflate_flags & NGHTTP2_HD_INFLATE_EMIT) {
+ nv_out->name = hd_nv.name->base;
+ nv_out->namelen = hd_nv.name->len;
+
+ nv_out->value = hd_nv.value->base;
+ nv_out->valuelen = hd_nv.value->len;
+
+ nv_out->flags = hd_nv.flags;
+ }
+
+ return rv;
+}
+
+ssize_t nghttp2_hd_inflate_hd_nv(nghttp2_hd_inflater *inflater,
+ nghttp2_hd_nv *nv_out, int *inflate_flags,
+ const uint8_t *in, size_t inlen,
+ int in_final) {
+ ssize_t rv = 0;
+ const uint8_t *first = in;
+ const uint8_t *last = in + inlen;
+ int rfin = 0;
+ int busy = 0;
+ nghttp2_mem *mem;
+
+ mem = inflater->ctx.mem;
+
+ if (inflater->ctx.bad) {
+ return NGHTTP2_ERR_HEADER_COMP;
+ }
+
+ DEBUGF(fprintf(stderr, "inflatehd: start state=%d\n", inflater->state));
+ hd_inflate_keep_free(inflater);
+ *inflate_flags = NGHTTP2_HD_INFLATE_NONE;
+ for (; in != last || busy;) {
+ busy = 0;
+ switch (inflater->state) {
+ case NGHTTP2_HD_STATE_EXPECT_TABLE_SIZE:
+ if ((*in & 0xe0u) != 0x20u) {
+ DEBUGF(fprintf(stderr, "inflatehd: header table size change was "
+ "expected, but saw 0x%02x as first byte",
+ *in));
+ rv = NGHTTP2_ERR_HEADER_COMP;
+ goto fail;
+ }
+ /* fall through */
+ case NGHTTP2_HD_STATE_INFLATE_START:
+ case NGHTTP2_HD_STATE_OPCODE:
+ if ((*in & 0xe0u) == 0x20u) {
+ DEBUGF(fprintf(stderr, "inflatehd: header table size change\n"));
+ if (inflater->state == NGHTTP2_HD_STATE_OPCODE) {
+ DEBUGF(fprintf(stderr, "inflatehd: header table size change must "
+ "appear at the head of header block\n"));
+ rv = NGHTTP2_ERR_HEADER_COMP;
+ goto fail;
+ }
+ inflater->opcode = NGHTTP2_HD_OPCODE_INDEXED;
+ inflater->state = NGHTTP2_HD_STATE_READ_TABLE_SIZE;
+ } else if (*in & 0x80u) {
+ DEBUGF(fprintf(stderr, "inflatehd: indexed repr\n"));
+ inflater->opcode = NGHTTP2_HD_OPCODE_INDEXED;
+ inflater->state = NGHTTP2_HD_STATE_READ_INDEX;
+ } else {
+ if (*in == 0x40u || *in == 0 || *in == 0x10u) {
+ DEBUGF(
+ fprintf(stderr, "inflatehd: literal header repr - new name\n"));
+ inflater->opcode = NGHTTP2_HD_OPCODE_NEWNAME;
+ inflater->state = NGHTTP2_HD_STATE_NEWNAME_CHECK_NAMELEN;
+ } else {
+ DEBUGF(fprintf(stderr,
+ "inflatehd: literal header repr - indexed name\n"));
+ inflater->opcode = NGHTTP2_HD_OPCODE_INDNAME;
+ inflater->state = NGHTTP2_HD_STATE_READ_INDEX;
+ }
+ inflater->index_required = (*in & 0x40) != 0;
+ inflater->no_index = (*in & 0xf0u) == 0x10u;
+ DEBUGF(fprintf(stderr, "inflatehd: indexing required=%d, no_index=%d\n",
+ inflater->index_required, inflater->no_index));
+ if (inflater->opcode == NGHTTP2_HD_OPCODE_NEWNAME) {
+ ++in;
+ }
+ }
+ inflater->left = 0;
+ inflater->shift = 0;
+ break;
+ case NGHTTP2_HD_STATE_READ_TABLE_SIZE:
+ rfin = 0;
+ rv = hd_inflate_read_len(
+ inflater, &rfin, in, last, 5,
+ nghttp2_min(inflater->min_hd_table_bufsize_max,
+ inflater->settings_hd_table_bufsize_max));
+ if (rv < 0) {
+ goto fail;
+ }
+ in += rv;
+ if (!rfin) {
+ goto almost_ok;
+ }
+ DEBUGF(fprintf(stderr, "inflatehd: table_size=%zu\n", inflater->left));
+ inflater->min_hd_table_bufsize_max = UINT32_MAX;
+ inflater->ctx.hd_table_bufsize_max = inflater->left;
+ hd_context_shrink_table_size(&inflater->ctx, NULL);
+ inflater->state = NGHTTP2_HD_STATE_INFLATE_START;
+ break;
+ case NGHTTP2_HD_STATE_READ_INDEX: {
+ size_t prefixlen;
+
+ if (inflater->opcode == NGHTTP2_HD_OPCODE_INDEXED) {
+ prefixlen = 7;
+ } else if (inflater->index_required) {
+ prefixlen = 6;
+ } else {
+ prefixlen = 4;
+ }
+
+ rfin = 0;
+ rv = hd_inflate_read_len(inflater, &rfin, in, last, prefixlen,
+ get_max_index(&inflater->ctx));
+ if (rv < 0) {
+ goto fail;
+ }
+
+ in += rv;
+
+ if (!rfin) {
+ goto almost_ok;
+ }
+
+ if (inflater->left == 0) {
+ rv = NGHTTP2_ERR_HEADER_COMP;
+ goto fail;
+ }
+
+ DEBUGF(fprintf(stderr, "inflatehd: index=%zu\n", inflater->left));
+ if (inflater->opcode == NGHTTP2_HD_OPCODE_INDEXED) {
+ inflater->index = inflater->left;
+ --inflater->index;
+
+ rv = hd_inflate_commit_indexed(inflater, nv_out);
+ if (rv < 0) {
+ goto fail;
+ }
+ inflater->state = NGHTTP2_HD_STATE_OPCODE;
+ /* If rv == 1, no header was emitted */
+ if (rv == 0) {
+ *inflate_flags |= NGHTTP2_HD_INFLATE_EMIT;
+ return (ssize_t)(in - first);
+ }
+ } else {
+ inflater->index = inflater->left;
+ --inflater->index;
+
+ inflater->state = NGHTTP2_HD_STATE_CHECK_VALUELEN;
+ }
+ break;
+ }
+ case NGHTTP2_HD_STATE_NEWNAME_CHECK_NAMELEN:
+ hd_inflate_set_huffman_encoded(inflater, in);
+ inflater->state = NGHTTP2_HD_STATE_NEWNAME_READ_NAMELEN;
+ inflater->left = 0;
+ inflater->shift = 0;
+ DEBUGF(fprintf(stderr, "inflatehd: huffman encoded=%d\n",
+ inflater->huffman_encoded != 0));
+ /* Fall through */
+ case NGHTTP2_HD_STATE_NEWNAME_READ_NAMELEN:
+ rfin = 0;
+ rv = hd_inflate_read_len(inflater, &rfin, in, last, 7, NGHTTP2_HD_MAX_NV);
+ if (rv < 0) {
+ goto fail;
+ }
+ in += rv;
+ if (!rfin) {
+ DEBUGF(fprintf(stderr,
+ "inflatehd: integer not fully decoded. current=%zu\n",
+ inflater->left));
+
+ goto almost_ok;
+ }
+
+ if (inflater->huffman_encoded) {
+ nghttp2_hd_huff_decode_context_init(&inflater->huff_decode_ctx);
+
+ inflater->state = NGHTTP2_HD_STATE_NEWNAME_READ_NAMEHUFF;
+
+ rv = nghttp2_rcbuf_new(&inflater->namercbuf, inflater->left * 2 + 1,
+ mem);
+ } else {
+ inflater->state = NGHTTP2_HD_STATE_NEWNAME_READ_NAME;
+ rv = nghttp2_rcbuf_new(&inflater->namercbuf, inflater->left + 1, mem);
+ }
+
+ if (rv != 0) {
+ goto fail;
+ }
+
+ nghttp2_buf_wrap_init(&inflater->namebuf, inflater->namercbuf->base,
+ inflater->namercbuf->len);
+
+ break;
+ case NGHTTP2_HD_STATE_NEWNAME_READ_NAMEHUFF:
+ rv = hd_inflate_read_huff(inflater, &inflater->namebuf, in, last);
+ if (rv < 0) {
+ goto fail;
+ }
+
+ in += rv;
+
+ DEBUGF(fprintf(stderr, "inflatehd: %zd bytes read\n", rv));
+
+ if (inflater->left) {
+ DEBUGF(fprintf(stderr, "inflatehd: still %zu bytes to go\n",
+ inflater->left));
+
+ goto almost_ok;
+ }
+
+ *inflater->namebuf.last = '\0';
+ inflater->namercbuf->len = nghttp2_buf_len(&inflater->namebuf);
+
+ inflater->state = NGHTTP2_HD_STATE_CHECK_VALUELEN;
+
+ break;
+ case NGHTTP2_HD_STATE_NEWNAME_READ_NAME:
+ rv = hd_inflate_read(inflater, &inflater->namebuf, in, last);
+ if (rv < 0) {
+ goto fail;
+ }
+
+ in += rv;
+
+ DEBUGF(fprintf(stderr, "inflatehd: %zd bytes read\n", rv));
+ if (inflater->left) {
+ DEBUGF(fprintf(stderr, "inflatehd: still %zu bytes to go\n",
+ inflater->left));
+
+ goto almost_ok;
+ }
+
+ *inflater->namebuf.last = '\0';
+ inflater->namercbuf->len = nghttp2_buf_len(&inflater->namebuf);
+
+ inflater->state = NGHTTP2_HD_STATE_CHECK_VALUELEN;
+
+ break;
+ case NGHTTP2_HD_STATE_CHECK_VALUELEN:
+ hd_inflate_set_huffman_encoded(inflater, in);
+ inflater->state = NGHTTP2_HD_STATE_READ_VALUELEN;
+ inflater->left = 0;
+ inflater->shift = 0;
+ DEBUGF(fprintf(stderr, "inflatehd: huffman encoded=%d\n",
+ inflater->huffman_encoded != 0));
+ /* Fall through */
+ case NGHTTP2_HD_STATE_READ_VALUELEN:
+ rfin = 0;
+ rv = hd_inflate_read_len(inflater, &rfin, in, last, 7, NGHTTP2_HD_MAX_NV);
+ if (rv < 0) {
+ goto fail;
+ }
+
+ in += rv;
+
+ if (!rfin) {
+ goto almost_ok;
+ }
+
+ DEBUGF(fprintf(stderr, "inflatehd: valuelen=%zu\n", inflater->left));
+
+ if (inflater->huffman_encoded) {
+ nghttp2_hd_huff_decode_context_init(&inflater->huff_decode_ctx);
+
+ inflater->state = NGHTTP2_HD_STATE_READ_VALUEHUFF;
+
+ rv = nghttp2_rcbuf_new(&inflater->valuercbuf, inflater->left * 2 + 1,
+ mem);
+ } else {
+ inflater->state = NGHTTP2_HD_STATE_READ_VALUE;
+
+ rv = nghttp2_rcbuf_new(&inflater->valuercbuf, inflater->left + 1, mem);
+ }
+
+ if (rv != 0) {
+ goto fail;
+ }
+
+ nghttp2_buf_wrap_init(&inflater->valuebuf, inflater->valuercbuf->base,
+ inflater->valuercbuf->len);
+
+ busy = 1;
+
+ break;
+ case NGHTTP2_HD_STATE_READ_VALUEHUFF:
+ rv = hd_inflate_read_huff(inflater, &inflater->valuebuf, in, last);
+ if (rv < 0) {
+ goto fail;
+ }
+
+ in += rv;
+
+ DEBUGF(fprintf(stderr, "inflatehd: %zd bytes read\n", rv));
+
+ if (inflater->left) {
+ DEBUGF(fprintf(stderr, "inflatehd: still %zu bytes to go\n",
+ inflater->left));
+
+ goto almost_ok;
+ }
+
+ *inflater->valuebuf.last = '\0';
+ inflater->valuercbuf->len = nghttp2_buf_len(&inflater->valuebuf);
+
+ if (inflater->opcode == NGHTTP2_HD_OPCODE_NEWNAME) {
+ rv = hd_inflate_commit_newname(inflater, nv_out);
+ } else {
+ rv = hd_inflate_commit_indname(inflater, nv_out);
+ }
+
+ if (rv != 0) {
+ goto fail;
+ }
+
+ inflater->state = NGHTTP2_HD_STATE_OPCODE;
+ *inflate_flags |= NGHTTP2_HD_INFLATE_EMIT;
+
+ return (ssize_t)(in - first);
+ case NGHTTP2_HD_STATE_READ_VALUE:
+ rv = hd_inflate_read(inflater, &inflater->valuebuf, in, last);
+ if (rv < 0) {
+ DEBUGF(fprintf(stderr, "inflatehd: value read failure %zd: %s\n", rv,
+ nghttp2_strerror((int)rv)));
+ goto fail;
+ }
+
+ in += rv;
+
+ DEBUGF(fprintf(stderr, "inflatehd: %zd bytes read\n", rv));
+
+ if (inflater->left) {
+ DEBUGF(fprintf(stderr, "inflatehd: still %zu bytes to go\n",
+ inflater->left));
+ goto almost_ok;
+ }
+
+ *inflater->valuebuf.last = '\0';
+ inflater->valuercbuf->len = nghttp2_buf_len(&inflater->valuebuf);
+
+ if (inflater->opcode == NGHTTP2_HD_OPCODE_NEWNAME) {
+ rv = hd_inflate_commit_newname(inflater, nv_out);
+ } else {
+ rv = hd_inflate_commit_indname(inflater, nv_out);
+ }
+
+ if (rv != 0) {
+ goto fail;
+ }
+
+ inflater->state = NGHTTP2_HD_STATE_OPCODE;
+ *inflate_flags |= NGHTTP2_HD_INFLATE_EMIT;
+
+ return (ssize_t)(in - first);
+ }
+ }
+
+ assert(in == last);
+
+ DEBUGF(fprintf(stderr, "inflatehd: all input bytes were processed\n"));
+
+ if (in_final) {
+ DEBUGF(fprintf(stderr, "inflatehd: in_final set\n"));
+
+ if (inflater->state != NGHTTP2_HD_STATE_OPCODE &&
+ inflater->state != NGHTTP2_HD_STATE_INFLATE_START) {
+ DEBUGF(fprintf(stderr, "inflatehd: unacceptable state=%d\n",
+ inflater->state));
+ rv = NGHTTP2_ERR_HEADER_COMP;
+
+ goto fail;
+ }
+ *inflate_flags |= NGHTTP2_HD_INFLATE_FINAL;
+ }
+ return (ssize_t)(in - first);
+
+almost_ok:
+ if (in_final) {
+ DEBUGF(fprintf(stderr, "inflatehd: input ended prematurely\n"));
+
+ rv = NGHTTP2_ERR_HEADER_COMP;
+
+ goto fail;
+ }
+ return (ssize_t)(in - first);
+
+fail:
+ DEBUGF(fprintf(stderr, "inflatehd: error return %zd\n", rv));
+
+ inflater->ctx.bad = 1;
+ return rv;
+}
+
+int nghttp2_hd_inflate_end_headers(nghttp2_hd_inflater *inflater) {
+ hd_inflate_keep_free(inflater);
+ inflater->state = NGHTTP2_HD_STATE_INFLATE_START;
+ return 0;
+}
+
+int nghttp2_hd_inflate_new(nghttp2_hd_inflater **inflater_ptr) {
+ return nghttp2_hd_inflate_new2(inflater_ptr, NULL);
+}
+
+int nghttp2_hd_inflate_new2(nghttp2_hd_inflater **inflater_ptr,
+ nghttp2_mem *mem) {
+ int rv;
+ nghttp2_hd_inflater *inflater;
+
+ if (mem == NULL) {
+ mem = nghttp2_mem_default();
+ }
+
+ inflater = nghttp2_mem_malloc(mem, sizeof(nghttp2_hd_inflater));
+
+ if (inflater == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ rv = nghttp2_hd_inflate_init(inflater, mem);
+
+ if (rv != 0) {
+ nghttp2_mem_free(mem, inflater);
+
+ return rv;
+ }
+
+ *inflater_ptr = inflater;
+
+ return 0;
+}
+
+void nghttp2_hd_inflate_del(nghttp2_hd_inflater *inflater) {
+ nghttp2_mem *mem;
+
+ mem = inflater->ctx.mem;
+ nghttp2_hd_inflate_free(inflater);
+
+ nghttp2_mem_free(mem, inflater);
+}
+
+int nghttp2_hd_emit_indname_block(nghttp2_bufs *bufs, size_t idx,
+ nghttp2_nv *nv, int indexing_mode) {
+
+ return emit_indname_block(bufs, idx, nv, indexing_mode);
+}
+
+int nghttp2_hd_emit_newname_block(nghttp2_bufs *bufs, nghttp2_nv *nv,
+ int indexing_mode) {
+ return emit_newname_block(bufs, nv, indexing_mode);
+}
+
+int nghttp2_hd_emit_table_size(nghttp2_bufs *bufs, size_t table_size) {
+ return emit_table_size(bufs, table_size);
+}
+
+ssize_t nghttp2_hd_decode_length(uint32_t *res, size_t *shift_ptr, int *final,
+ uint32_t initial, size_t shift, uint8_t *in,
+ uint8_t *last, size_t prefix) {
+ return decode_length(res, shift_ptr, final, initial, shift, in, last, prefix);
+}
+
+static size_t hd_get_num_table_entries(nghttp2_hd_context *context) {
+ return context->hd_table.len + NGHTTP2_STATIC_TABLE_LENGTH;
+}
+
+static const nghttp2_nv *hd_get_table_entry(nghttp2_hd_context *context,
+ size_t idx) {
+ if (idx == 0) {
+ return NULL;
+ }
+
+ --idx;
+
+ if (!INDEX_RANGE_VALID(context, idx)) {
+ return NULL;
+ }
+
+ return nghttp2_hd_table_get2(context, idx);
+}
+
+size_t nghttp2_hd_deflate_get_num_table_entries(nghttp2_hd_deflater *deflater) {
+ return hd_get_num_table_entries(&deflater->ctx);
+}
+
+const nghttp2_nv *
+nghttp2_hd_deflate_get_table_entry(nghttp2_hd_deflater *deflater, size_t idx) {
+ return hd_get_table_entry(&deflater->ctx, idx);
+}
+
+size_t
+nghttp2_hd_deflate_get_dynamic_table_size(nghttp2_hd_deflater *deflater) {
+ return deflater->ctx.hd_table_bufsize;
+}
+
+size_t
+nghttp2_hd_deflate_get_max_dynamic_table_size(nghttp2_hd_deflater *deflater) {
+ return deflater->ctx.hd_table_bufsize_max;
+}
+
+size_t nghttp2_hd_inflate_get_num_table_entries(nghttp2_hd_inflater *inflater) {
+ return hd_get_num_table_entries(&inflater->ctx);
+}
+
+const nghttp2_nv *
+nghttp2_hd_inflate_get_table_entry(nghttp2_hd_inflater *inflater, size_t idx) {
+ return hd_get_table_entry(&inflater->ctx, idx);
+}
+
+size_t
+nghttp2_hd_inflate_get_dynamic_table_size(nghttp2_hd_inflater *inflater) {
+ return inflater->ctx.hd_table_bufsize;
+}
+
+size_t
+nghttp2_hd_inflate_get_max_dynamic_table_size(nghttp2_hd_inflater *inflater) {
+ return inflater->ctx.hd_table_bufsize_max;
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2013 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_hd_huffman.h"
+
+#include <string.h>
+#include <assert.h>
+#include <stdio.h>
+
+#include "nghttp2_hd.h"
+
+/*
+ * Encodes huffman code |sym| into |*dest_ptr|, whose least |rembits|
+ * bits are not filled yet. The |rembits| must be in range [1, 8],
+ * inclusive. At the end of the process, the |*dest_ptr| is updated
+ * and points where next output should be placed. The number of
+ * unfilled bits in the pointed location is returned.
+ */
+static ssize_t huff_encode_sym(nghttp2_bufs *bufs, size_t *avail_ptr,
+ size_t rembits, const nghttp2_huff_sym *sym) {
+ int rv;
+ size_t nbits = sym->nbits;
+ uint32_t code = sym->code;
+
+ /* We assume that sym->nbits <= 32 */
+ if (rembits > nbits) {
+ nghttp2_bufs_fast_orb_hold(bufs, (uint8_t)(code << (rembits - nbits)));
+ return (ssize_t)(rembits - nbits);
+ }
+
+ if (rembits == nbits) {
+ nghttp2_bufs_fast_orb(bufs, (uint8_t)code);
+ --*avail_ptr;
+ return 8;
+ }
+
+ nghttp2_bufs_fast_orb(bufs, (uint8_t)(code >> (nbits - rembits)));
+ --*avail_ptr;
+
+ nbits -= rembits;
+ if (nbits & 0x7) {
+ /* align code to MSB byte boundary */
+ code <<= 8 - (nbits & 0x7);
+ }
+
+ /* we lose at most 3 bytes, but it is not critical in practice */
+ if (*avail_ptr < (nbits + 7) / 8) {
+ rv = nghttp2_bufs_advance(bufs);
+ if (rv != 0) {
+ return rv;
+ }
+ *avail_ptr = nghttp2_bufs_cur_avail(bufs);
+ /* we assume that we at least 3 buffer space available */
+ assert(*avail_ptr >= 3);
+ }
+
+ /* fast path, since most code is less than 8 */
+ if (nbits < 8) {
+ nghttp2_bufs_fast_addb_hold(bufs, (uint8_t)code);
+ *avail_ptr = nghttp2_bufs_cur_avail(bufs);
+ return (ssize_t)(8 - nbits);
+ }
+
+ /* handle longer code path */
+ if (nbits > 24) {
+ nghttp2_bufs_fast_addb(bufs, (uint8_t)(code >> 24));
+ nbits -= 8;
+ }
+
+ if (nbits > 16) {
+ nghttp2_bufs_fast_addb(bufs, (uint8_t)(code >> 16));
+ nbits -= 8;
+ }
+
+ if (nbits > 8) {
+ nghttp2_bufs_fast_addb(bufs, (uint8_t)(code >> 8));
+ nbits -= 8;
+ }
+
+ if (nbits == 8) {
+ nghttp2_bufs_fast_addb(bufs, (uint8_t)code);
+ *avail_ptr = nghttp2_bufs_cur_avail(bufs);
+ return 8;
+ }
+
+ nghttp2_bufs_fast_addb_hold(bufs, (uint8_t)code);
+ *avail_ptr = nghttp2_bufs_cur_avail(bufs);
+ return (ssize_t)(8 - nbits);
+}
+
+size_t nghttp2_hd_huff_encode_count(const uint8_t *src, size_t len) {
+ size_t i;
+ size_t nbits = 0;
+
+ for (i = 0; i < len; ++i) {
+ nbits += huff_sym_table[src[i]].nbits;
+ }
+ /* pad the prefix of EOS (256) */
+ return (nbits + 7) / 8;
+}
+
+int nghttp2_hd_huff_encode(nghttp2_bufs *bufs, const uint8_t *src,
+ size_t srclen) {
+ int rv;
+ ssize_t rembits = 8;
+ size_t i;
+ size_t avail;
+
+ avail = nghttp2_bufs_cur_avail(bufs);
+
+ for (i = 0; i < srclen; ++i) {
+ const nghttp2_huff_sym *sym = &huff_sym_table[src[i]];
+ if (rembits == 8) {
+ if (avail) {
+ nghttp2_bufs_fast_addb_hold(bufs, 0);
+ } else {
+ rv = nghttp2_bufs_addb_hold(bufs, 0);
+ if (rv != 0) {
+ return rv;
+ }
+ avail = nghttp2_bufs_cur_avail(bufs);
+ }
+ }
+ rembits = huff_encode_sym(bufs, &avail, (size_t)rembits, sym);
+ if (rembits < 0) {
+ return (int)rembits;
+ }
+ }
+ /* 256 is special terminal symbol, pad with its prefix */
+ if (rembits < 8) {
+ /* if rembits < 8, we should have at least 1 buffer space
+ available */
+ const nghttp2_huff_sym *sym = &huff_sym_table[256];
+ assert(avail);
+ /* Caution we no longer adjust avail here */
+ nghttp2_bufs_fast_orb(
+ bufs, (uint8_t)(sym->code >> (sym->nbits - (size_t)rembits)));
+ }
+
+ return 0;
+}
+
+void nghttp2_hd_huff_decode_context_init(nghttp2_hd_huff_decode_context *ctx) {
+ ctx->state = 0;
+ ctx->accept = 1;
+}
+
+ssize_t nghttp2_hd_huff_decode(nghttp2_hd_huff_decode_context *ctx,
+ nghttp2_buf *buf, const uint8_t *src,
+ size_t srclen, int final) {
+ size_t i;
+
+ /* We use the decoding algorithm described in
+ http://graphics.ics.uci.edu/pub/Prefix.pdf */
+ for (i = 0; i < srclen; ++i) {
+ const nghttp2_huff_decode *t;
+
+ t = &huff_decode_table[ctx->state][src[i] >> 4];
+ if (t->flags & NGHTTP2_HUFF_FAIL) {
+ return NGHTTP2_ERR_HEADER_COMP;
+ }
+ if (t->flags & NGHTTP2_HUFF_SYM) {
+ *buf->last++ = t->sym;
+ }
+
+ t = &huff_decode_table[t->state][src[i] & 0xf];
+ if (t->flags & NGHTTP2_HUFF_FAIL) {
+ return NGHTTP2_ERR_HEADER_COMP;
+ }
+ if (t->flags & NGHTTP2_HUFF_SYM) {
+ *buf->last++ = t->sym;
+ }
+
+ ctx->state = t->state;
+ ctx->accept = (t->flags & NGHTTP2_HUFF_ACCEPTED) != 0;
+ }
+ if (final && !ctx->accept) {
+ return NGHTTP2_ERR_HEADER_COMP;
+ }
+ return (ssize_t)i;
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2013 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_hd_huffman.h"
+
+/* Generated by mkhufftbl.py */
+
+const nghttp2_huff_sym huff_sym_table[] = {{13, 0x1ff8u},
+ {23, 0x7fffd8u},
+ {28, 0xfffffe2u},
+ {28, 0xfffffe3u},
+ {28, 0xfffffe4u},
+ {28, 0xfffffe5u},
+ {28, 0xfffffe6u},
+ {28, 0xfffffe7u},
+ {28, 0xfffffe8u},
+ {24, 0xffffeau},
+ {30, 0x3ffffffcu},
+ {28, 0xfffffe9u},
+ {28, 0xfffffeau},
+ {30, 0x3ffffffdu},
+ {28, 0xfffffebu},
+ {28, 0xfffffecu},
+ {28, 0xfffffedu},
+ {28, 0xfffffeeu},
+ {28, 0xfffffefu},
+ {28, 0xffffff0u},
+ {28, 0xffffff1u},
+ {28, 0xffffff2u},
+ {30, 0x3ffffffeu},
+ {28, 0xffffff3u},
+ {28, 0xffffff4u},
+ {28, 0xffffff5u},
+ {28, 0xffffff6u},
+ {28, 0xffffff7u},
+ {28, 0xffffff8u},
+ {28, 0xffffff9u},
+ {28, 0xffffffau},
+ {28, 0xffffffbu},
+ {6, 0x14u},
+ {10, 0x3f8u},
+ {10, 0x3f9u},
+ {12, 0xffau},
+ {13, 0x1ff9u},
+ {6, 0x15u},
+ {8, 0xf8u},
+ {11, 0x7fau},
+ {10, 0x3fau},
+ {10, 0x3fbu},
+ {8, 0xf9u},
+ {11, 0x7fbu},
+ {8, 0xfau},
+ {6, 0x16u},
+ {6, 0x17u},
+ {6, 0x18u},
+ {5, 0x0u},
+ {5, 0x1u},
+ {5, 0x2u},
+ {6, 0x19u},
+ {6, 0x1au},
+ {6, 0x1bu},
+ {6, 0x1cu},
+ {6, 0x1du},
+ {6, 0x1eu},
+ {6, 0x1fu},
+ {7, 0x5cu},
+ {8, 0xfbu},
+ {15, 0x7ffcu},
+ {6, 0x20u},
+ {12, 0xffbu},
+ {10, 0x3fcu},
+ {13, 0x1ffau},
+ {6, 0x21u},
+ {7, 0x5du},
+ {7, 0x5eu},
+ {7, 0x5fu},
+ {7, 0x60u},
+ {7, 0x61u},
+ {7, 0x62u},
+ {7, 0x63u},
+ {7, 0x64u},
+ {7, 0x65u},
+ {7, 0x66u},
+ {7, 0x67u},
+ {7, 0x68u},
+ {7, 0x69u},
+ {7, 0x6au},
+ {7, 0x6bu},
+ {7, 0x6cu},
+ {7, 0x6du},
+ {7, 0x6eu},
+ {7, 0x6fu},
+ {7, 0x70u},
+ {7, 0x71u},
+ {7, 0x72u},
+ {8, 0xfcu},
+ {7, 0x73u},
+ {8, 0xfdu},
+ {13, 0x1ffbu},
+ {19, 0x7fff0u},
+ {13, 0x1ffcu},
+ {14, 0x3ffcu},
+ {6, 0x22u},
+ {15, 0x7ffdu},
+ {5, 0x3u},
+ {6, 0x23u},
+ {5, 0x4u},
+ {6, 0x24u},
+ {5, 0x5u},
+ {6, 0x25u},
+ {6, 0x26u},
+ {6, 0x27u},
+ {5, 0x6u},
+ {7, 0x74u},
+ {7, 0x75u},
+ {6, 0x28u},
+ {6, 0x29u},
+ {6, 0x2au},
+ {5, 0x7u},
+ {6, 0x2bu},
+ {7, 0x76u},
+ {6, 0x2cu},
+ {5, 0x8u},
+ {5, 0x9u},
+ {6, 0x2du},
+ {7, 0x77u},
+ {7, 0x78u},
+ {7, 0x79u},
+ {7, 0x7au},
+ {7, 0x7bu},
+ {15, 0x7ffeu},
+ {11, 0x7fcu},
+ {14, 0x3ffdu},
+ {13, 0x1ffdu},
+ {28, 0xffffffcu},
+ {20, 0xfffe6u},
+ {22, 0x3fffd2u},
+ {20, 0xfffe7u},
+ {20, 0xfffe8u},
+ {22, 0x3fffd3u},
+ {22, 0x3fffd4u},
+ {22, 0x3fffd5u},
+ {23, 0x7fffd9u},
+ {22, 0x3fffd6u},
+ {23, 0x7fffdau},
+ {23, 0x7fffdbu},
+ {23, 0x7fffdcu},
+ {23, 0x7fffddu},
+ {23, 0x7fffdeu},
+ {24, 0xffffebu},
+ {23, 0x7fffdfu},
+ {24, 0xffffecu},
+ {24, 0xffffedu},
+ {22, 0x3fffd7u},
+ {23, 0x7fffe0u},
+ {24, 0xffffeeu},
+ {23, 0x7fffe1u},
+ {23, 0x7fffe2u},
+ {23, 0x7fffe3u},
+ {23, 0x7fffe4u},
+ {21, 0x1fffdcu},
+ {22, 0x3fffd8u},
+ {23, 0x7fffe5u},
+ {22, 0x3fffd9u},
+ {23, 0x7fffe6u},
+ {23, 0x7fffe7u},
+ {24, 0xffffefu},
+ {22, 0x3fffdau},
+ {21, 0x1fffddu},
+ {20, 0xfffe9u},
+ {22, 0x3fffdbu},
+ {22, 0x3fffdcu},
+ {23, 0x7fffe8u},
+ {23, 0x7fffe9u},
+ {21, 0x1fffdeu},
+ {23, 0x7fffeau},
+ {22, 0x3fffddu},
+ {22, 0x3fffdeu},
+ {24, 0xfffff0u},
+ {21, 0x1fffdfu},
+ {22, 0x3fffdfu},
+ {23, 0x7fffebu},
+ {23, 0x7fffecu},
+ {21, 0x1fffe0u},
+ {21, 0x1fffe1u},
+ {22, 0x3fffe0u},
+ {21, 0x1fffe2u},
+ {23, 0x7fffedu},
+ {22, 0x3fffe1u},
+ {23, 0x7fffeeu},
+ {23, 0x7fffefu},
+ {20, 0xfffeau},
+ {22, 0x3fffe2u},
+ {22, 0x3fffe3u},
+ {22, 0x3fffe4u},
+ {23, 0x7ffff0u},
+ {22, 0x3fffe5u},
+ {22, 0x3fffe6u},
+ {23, 0x7ffff1u},
+ {26, 0x3ffffe0u},
+ {26, 0x3ffffe1u},
+ {20, 0xfffebu},
+ {19, 0x7fff1u},
+ {22, 0x3fffe7u},
+ {23, 0x7ffff2u},
+ {22, 0x3fffe8u},
+ {25, 0x1ffffecu},
+ {26, 0x3ffffe2u},
+ {26, 0x3ffffe3u},
+ {26, 0x3ffffe4u},
+ {27, 0x7ffffdeu},
+ {27, 0x7ffffdfu},
+ {26, 0x3ffffe5u},
+ {24, 0xfffff1u},
+ {25, 0x1ffffedu},
+ {19, 0x7fff2u},
+ {21, 0x1fffe3u},
+ {26, 0x3ffffe6u},
+ {27, 0x7ffffe0u},
+ {27, 0x7ffffe1u},
+ {26, 0x3ffffe7u},
+ {27, 0x7ffffe2u},
+ {24, 0xfffff2u},
+ {21, 0x1fffe4u},
+ {21, 0x1fffe5u},
+ {26, 0x3ffffe8u},
+ {26, 0x3ffffe9u},
+ {28, 0xffffffdu},
+ {27, 0x7ffffe3u},
+ {27, 0x7ffffe4u},
+ {27, 0x7ffffe5u},
+ {20, 0xfffecu},
+ {24, 0xfffff3u},
+ {20, 0xfffedu},
+ {21, 0x1fffe6u},
+ {22, 0x3fffe9u},
+ {21, 0x1fffe7u},
+ {21, 0x1fffe8u},
+ {23, 0x7ffff3u},
+ {22, 0x3fffeau},
+ {22, 0x3fffebu},
+ {25, 0x1ffffeeu},
+ {25, 0x1ffffefu},
+ {24, 0xfffff4u},
+ {24, 0xfffff5u},
+ {26, 0x3ffffeau},
+ {23, 0x7ffff4u},
+ {26, 0x3ffffebu},
+ {27, 0x7ffffe6u},
+ {26, 0x3ffffecu},
+ {26, 0x3ffffedu},
+ {27, 0x7ffffe7u},
+ {27, 0x7ffffe8u},
+ {27, 0x7ffffe9u},
+ {27, 0x7ffffeau},
+ {27, 0x7ffffebu},
+ {28, 0xffffffeu},
+ {27, 0x7ffffecu},
+ {27, 0x7ffffedu},
+ {27, 0x7ffffeeu},
+ {27, 0x7ffffefu},
+ {27, 0x7fffff0u},
+ {26, 0x3ffffeeu},
+ {30, 0x3fffffffu}};
+
+const nghttp2_huff_decode huff_decode_table[][16] = {
+ /* 0 */
+ {
+ {4, 0x00, 0},
+ {5, 0x00, 0},
+ {7, 0x00, 0},
+ {8, 0x00, 0},
+ {11, 0x00, 0},
+ {12, 0x00, 0},
+ {16, 0x00, 0},
+ {19, 0x00, 0},
+ {25, 0x00, 0},
+ {28, 0x00, 0},
+ {32, 0x00, 0},
+ {35, 0x00, 0},
+ {42, 0x00, 0},
+ {49, 0x00, 0},
+ {57, 0x00, 0},
+ {64, 0x01, 0},
+ },
+ /* 1 */
+ {
+ {0, 0x03, 48},
+ {0, 0x03, 49},
+ {0, 0x03, 50},
+ {0, 0x03, 97},
+ {0, 0x03, 99},
+ {0, 0x03, 101},
+ {0, 0x03, 105},
+ {0, 0x03, 111},
+ {0, 0x03, 115},
+ {0, 0x03, 116},
+ {13, 0x00, 0},
+ {14, 0x00, 0},
+ {17, 0x00, 0},
+ {18, 0x00, 0},
+ {20, 0x00, 0},
+ {21, 0x00, 0},
+ },
+ /* 2 */
+ {
+ {1, 0x02, 48},
+ {22, 0x03, 48},
+ {1, 0x02, 49},
+ {22, 0x03, 49},
+ {1, 0x02, 50},
+ {22, 0x03, 50},
+ {1, 0x02, 97},
+ {22, 0x03, 97},
+ {1, 0x02, 99},
+ {22, 0x03, 99},
+ {1, 0x02, 101},
+ {22, 0x03, 101},
+ {1, 0x02, 105},
+ {22, 0x03, 105},
+ {1, 0x02, 111},
+ {22, 0x03, 111},
+ },
+ /* 3 */
+ {
+ {2, 0x02, 48},
+ {9, 0x02, 48},
+ {23, 0x02, 48},
+ {40, 0x03, 48},
+ {2, 0x02, 49},
+ {9, 0x02, 49},
+ {23, 0x02, 49},
+ {40, 0x03, 49},
+ {2, 0x02, 50},
+ {9, 0x02, 50},
+ {23, 0x02, 50},
+ {40, 0x03, 50},
+ {2, 0x02, 97},
+ {9, 0x02, 97},
+ {23, 0x02, 97},
+ {40, 0x03, 97},
+ },
+ /* 4 */
+ {
+ {3, 0x02, 48},
+ {6, 0x02, 48},
+ {10, 0x02, 48},
+ {15, 0x02, 48},
+ {24, 0x02, 48},
+ {31, 0x02, 48},
+ {41, 0x02, 48},
+ {56, 0x03, 48},
+ {3, 0x02, 49},
+ {6, 0x02, 49},
+ {10, 0x02, 49},
+ {15, 0x02, 49},
+ {24, 0x02, 49},
+ {31, 0x02, 49},
+ {41, 0x02, 49},
+ {56, 0x03, 49},
+ },
+ /* 5 */
+ {
+ {3, 0x02, 50},
+ {6, 0x02, 50},
+ {10, 0x02, 50},
+ {15, 0x02, 50},
+ {24, 0x02, 50},
+ {31, 0x02, 50},
+ {41, 0x02, 50},
+ {56, 0x03, 50},
+ {3, 0x02, 97},
+ {6, 0x02, 97},
+ {10, 0x02, 97},
+ {15, 0x02, 97},
+ {24, 0x02, 97},
+ {31, 0x02, 97},
+ {41, 0x02, 97},
+ {56, 0x03, 97},
+ },
+ /* 6 */
+ {
+ {2, 0x02, 99},
+ {9, 0x02, 99},
+ {23, 0x02, 99},
+ {40, 0x03, 99},
+ {2, 0x02, 101},
+ {9, 0x02, 101},
+ {23, 0x02, 101},
+ {40, 0x03, 101},
+ {2, 0x02, 105},
+ {9, 0x02, 105},
+ {23, 0x02, 105},
+ {40, 0x03, 105},
+ {2, 0x02, 111},
+ {9, 0x02, 111},
+ {23, 0x02, 111},
+ {40, 0x03, 111},
+ },
+ /* 7 */
+ {
+ {3, 0x02, 99},
+ {6, 0x02, 99},
+ {10, 0x02, 99},
+ {15, 0x02, 99},
+ {24, 0x02, 99},
+ {31, 0x02, 99},
+ {41, 0x02, 99},
+ {56, 0x03, 99},
+ {3, 0x02, 101},
+ {6, 0x02, 101},
+ {10, 0x02, 101},
+ {15, 0x02, 101},
+ {24, 0x02, 101},
+ {31, 0x02, 101},
+ {41, 0x02, 101},
+ {56, 0x03, 101},
+ },
+ /* 8 */
+ {
+ {3, 0x02, 105},
+ {6, 0x02, 105},
+ {10, 0x02, 105},
+ {15, 0x02, 105},
+ {24, 0x02, 105},
+ {31, 0x02, 105},
+ {41, 0x02, 105},
+ {56, 0x03, 105},
+ {3, 0x02, 111},
+ {6, 0x02, 111},
+ {10, 0x02, 111},
+ {15, 0x02, 111},
+ {24, 0x02, 111},
+ {31, 0x02, 111},
+ {41, 0x02, 111},
+ {56, 0x03, 111},
+ },
+ /* 9 */
+ {
+ {1, 0x02, 115},
+ {22, 0x03, 115},
+ {1, 0x02, 116},
+ {22, 0x03, 116},
+ {0, 0x03, 32},
+ {0, 0x03, 37},
+ {0, 0x03, 45},
+ {0, 0x03, 46},
+ {0, 0x03, 47},
+ {0, 0x03, 51},
+ {0, 0x03, 52},
+ {0, 0x03, 53},
+ {0, 0x03, 54},
+ {0, 0x03, 55},
+ {0, 0x03, 56},
+ {0, 0x03, 57},
+ },
+ /* 10 */
+ {
+ {2, 0x02, 115},
+ {9, 0x02, 115},
+ {23, 0x02, 115},
+ {40, 0x03, 115},
+ {2, 0x02, 116},
+ {9, 0x02, 116},
+ {23, 0x02, 116},
+ {40, 0x03, 116},
+ {1, 0x02, 32},
+ {22, 0x03, 32},
+ {1, 0x02, 37},
+ {22, 0x03, 37},
+ {1, 0x02, 45},
+ {22, 0x03, 45},
+ {1, 0x02, 46},
+ {22, 0x03, 46},
+ },
+ /* 11 */
+ {
+ {3, 0x02, 115},
+ {6, 0x02, 115},
+ {10, 0x02, 115},
+ {15, 0x02, 115},
+ {24, 0x02, 115},
+ {31, 0x02, 115},
+ {41, 0x02, 115},
+ {56, 0x03, 115},
+ {3, 0x02, 116},
+ {6, 0x02, 116},
+ {10, 0x02, 116},
+ {15, 0x02, 116},
+ {24, 0x02, 116},
+ {31, 0x02, 116},
+ {41, 0x02, 116},
+ {56, 0x03, 116},
+ },
+ /* 12 */
+ {
+ {2, 0x02, 32},
+ {9, 0x02, 32},
+ {23, 0x02, 32},
+ {40, 0x03, 32},
+ {2, 0x02, 37},
+ {9, 0x02, 37},
+ {23, 0x02, 37},
+ {40, 0x03, 37},
+ {2, 0x02, 45},
+ {9, 0x02, 45},
+ {23, 0x02, 45},
+ {40, 0x03, 45},
+ {2, 0x02, 46},
+ {9, 0x02, 46},
+ {23, 0x02, 46},
+ {40, 0x03, 46},
+ },
+ /* 13 */
+ {
+ {3, 0x02, 32},
+ {6, 0x02, 32},
+ {10, 0x02, 32},
+ {15, 0x02, 32},
+ {24, 0x02, 32},
+ {31, 0x02, 32},
+ {41, 0x02, 32},
+ {56, 0x03, 32},
+ {3, 0x02, 37},
+ {6, 0x02, 37},
+ {10, 0x02, 37},
+ {15, 0x02, 37},
+ {24, 0x02, 37},
+ {31, 0x02, 37},
+ {41, 0x02, 37},
+ {56, 0x03, 37},
+ },
+ /* 14 */
+ {
+ {3, 0x02, 45},
+ {6, 0x02, 45},
+ {10, 0x02, 45},
+ {15, 0x02, 45},
+ {24, 0x02, 45},
+ {31, 0x02, 45},
+ {41, 0x02, 45},
+ {56, 0x03, 45},
+ {3, 0x02, 46},
+ {6, 0x02, 46},
+ {10, 0x02, 46},
+ {15, 0x02, 46},
+ {24, 0x02, 46},
+ {31, 0x02, 46},
+ {41, 0x02, 46},
+ {56, 0x03, 46},
+ },
+ /* 15 */
+ {
+ {1, 0x02, 47},
+ {22, 0x03, 47},
+ {1, 0x02, 51},
+ {22, 0x03, 51},
+ {1, 0x02, 52},
+ {22, 0x03, 52},
+ {1, 0x02, 53},
+ {22, 0x03, 53},
+ {1, 0x02, 54},
+ {22, 0x03, 54},
+ {1, 0x02, 55},
+ {22, 0x03, 55},
+ {1, 0x02, 56},
+ {22, 0x03, 56},
+ {1, 0x02, 57},
+ {22, 0x03, 57},
+ },
+ /* 16 */
+ {
+ {2, 0x02, 47},
+ {9, 0x02, 47},
+ {23, 0x02, 47},
+ {40, 0x03, 47},
+ {2, 0x02, 51},
+ {9, 0x02, 51},
+ {23, 0x02, 51},
+ {40, 0x03, 51},
+ {2, 0x02, 52},
+ {9, 0x02, 52},
+ {23, 0x02, 52},
+ {40, 0x03, 52},
+ {2, 0x02, 53},
+ {9, 0x02, 53},
+ {23, 0x02, 53},
+ {40, 0x03, 53},
+ },
+ /* 17 */
+ {
+ {3, 0x02, 47},
+ {6, 0x02, 47},
+ {10, 0x02, 47},
+ {15, 0x02, 47},
+ {24, 0x02, 47},
+ {31, 0x02, 47},
+ {41, 0x02, 47},
+ {56, 0x03, 47},
+ {3, 0x02, 51},
+ {6, 0x02, 51},
+ {10, 0x02, 51},
+ {15, 0x02, 51},
+ {24, 0x02, 51},
+ {31, 0x02, 51},
+ {41, 0x02, 51},
+ {56, 0x03, 51},
+ },
+ /* 18 */
+ {
+ {3, 0x02, 52},
+ {6, 0x02, 52},
+ {10, 0x02, 52},
+ {15, 0x02, 52},
+ {24, 0x02, 52},
+ {31, 0x02, 52},
+ {41, 0x02, 52},
+ {56, 0x03, 52},
+ {3, 0x02, 53},
+ {6, 0x02, 53},
+ {10, 0x02, 53},
+ {15, 0x02, 53},
+ {24, 0x02, 53},
+ {31, 0x02, 53},
+ {41, 0x02, 53},
+ {56, 0x03, 53},
+ },
+ /* 19 */
+ {
+ {2, 0x02, 54},
+ {9, 0x02, 54},
+ {23, 0x02, 54},
+ {40, 0x03, 54},
+ {2, 0x02, 55},
+ {9, 0x02, 55},
+ {23, 0x02, 55},
+ {40, 0x03, 55},
+ {2, 0x02, 56},
+ {9, 0x02, 56},
+ {23, 0x02, 56},
+ {40, 0x03, 56},
+ {2, 0x02, 57},
+ {9, 0x02, 57},
+ {23, 0x02, 57},
+ {40, 0x03, 57},
+ },
+ /* 20 */
+ {
+ {3, 0x02, 54},
+ {6, 0x02, 54},
+ {10, 0x02, 54},
+ {15, 0x02, 54},
+ {24, 0x02, 54},
+ {31, 0x02, 54},
+ {41, 0x02, 54},
+ {56, 0x03, 54},
+ {3, 0x02, 55},
+ {6, 0x02, 55},
+ {10, 0x02, 55},
+ {15, 0x02, 55},
+ {24, 0x02, 55},
+ {31, 0x02, 55},
+ {41, 0x02, 55},
+ {56, 0x03, 55},
+ },
+ /* 21 */
+ {
+ {3, 0x02, 56},
+ {6, 0x02, 56},
+ {10, 0x02, 56},
+ {15, 0x02, 56},
+ {24, 0x02, 56},
+ {31, 0x02, 56},
+ {41, 0x02, 56},
+ {56, 0x03, 56},
+ {3, 0x02, 57},
+ {6, 0x02, 57},
+ {10, 0x02, 57},
+ {15, 0x02, 57},
+ {24, 0x02, 57},
+ {31, 0x02, 57},
+ {41, 0x02, 57},
+ {56, 0x03, 57},
+ },
+ /* 22 */
+ {
+ {26, 0x00, 0},
+ {27, 0x00, 0},
+ {29, 0x00, 0},
+ {30, 0x00, 0},
+ {33, 0x00, 0},
+ {34, 0x00, 0},
+ {36, 0x00, 0},
+ {37, 0x00, 0},
+ {43, 0x00, 0},
+ {46, 0x00, 0},
+ {50, 0x00, 0},
+ {53, 0x00, 0},
+ {58, 0x00, 0},
+ {61, 0x00, 0},
+ {65, 0x00, 0},
+ {68, 0x01, 0},
+ },
+ /* 23 */
+ {
+ {0, 0x03, 61},
+ {0, 0x03, 65},
+ {0, 0x03, 95},
+ {0, 0x03, 98},
+ {0, 0x03, 100},
+ {0, 0x03, 102},
+ {0, 0x03, 103},
+ {0, 0x03, 104},
+ {0, 0x03, 108},
+ {0, 0x03, 109},
+ {0, 0x03, 110},
+ {0, 0x03, 112},
+ {0, 0x03, 114},
+ {0, 0x03, 117},
+ {38, 0x00, 0},
+ {39, 0x00, 0},
+ },
+ /* 24 */
+ {
+ {1, 0x02, 61},
+ {22, 0x03, 61},
+ {1, 0x02, 65},
+ {22, 0x03, 65},
+ {1, 0x02, 95},
+ {22, 0x03, 95},
+ {1, 0x02, 98},
+ {22, 0x03, 98},
+ {1, 0x02, 100},
+ {22, 0x03, 100},
+ {1, 0x02, 102},
+ {22, 0x03, 102},
+ {1, 0x02, 103},
+ {22, 0x03, 103},
+ {1, 0x02, 104},
+ {22, 0x03, 104},
+ },
+ /* 25 */
+ {
+ {2, 0x02, 61},
+ {9, 0x02, 61},
+ {23, 0x02, 61},
+ {40, 0x03, 61},
+ {2, 0x02, 65},
+ {9, 0x02, 65},
+ {23, 0x02, 65},
+ {40, 0x03, 65},
+ {2, 0x02, 95},
+ {9, 0x02, 95},
+ {23, 0x02, 95},
+ {40, 0x03, 95},
+ {2, 0x02, 98},
+ {9, 0x02, 98},
+ {23, 0x02, 98},
+ {40, 0x03, 98},
+ },
+ /* 26 */
+ {
+ {3, 0x02, 61},
+ {6, 0x02, 61},
+ {10, 0x02, 61},
+ {15, 0x02, 61},
+ {24, 0x02, 61},
+ {31, 0x02, 61},
+ {41, 0x02, 61},
+ {56, 0x03, 61},
+ {3, 0x02, 65},
+ {6, 0x02, 65},
+ {10, 0x02, 65},
+ {15, 0x02, 65},
+ {24, 0x02, 65},
+ {31, 0x02, 65},
+ {41, 0x02, 65},
+ {56, 0x03, 65},
+ },
+ /* 27 */
+ {
+ {3, 0x02, 95},
+ {6, 0x02, 95},
+ {10, 0x02, 95},
+ {15, 0x02, 95},
+ {24, 0x02, 95},
+ {31, 0x02, 95},
+ {41, 0x02, 95},
+ {56, 0x03, 95},
+ {3, 0x02, 98},
+ {6, 0x02, 98},
+ {10, 0x02, 98},
+ {15, 0x02, 98},
+ {24, 0x02, 98},
+ {31, 0x02, 98},
+ {41, 0x02, 98},
+ {56, 0x03, 98},
+ },
+ /* 28 */
+ {
+ {2, 0x02, 100},
+ {9, 0x02, 100},
+ {23, 0x02, 100},
+ {40, 0x03, 100},
+ {2, 0x02, 102},
+ {9, 0x02, 102},
+ {23, 0x02, 102},
+ {40, 0x03, 102},
+ {2, 0x02, 103},
+ {9, 0x02, 103},
+ {23, 0x02, 103},
+ {40, 0x03, 103},
+ {2, 0x02, 104},
+ {9, 0x02, 104},
+ {23, 0x02, 104},
+ {40, 0x03, 104},
+ },
+ /* 29 */
+ {
+ {3, 0x02, 100},
+ {6, 0x02, 100},
+ {10, 0x02, 100},
+ {15, 0x02, 100},
+ {24, 0x02, 100},
+ {31, 0x02, 100},
+ {41, 0x02, 100},
+ {56, 0x03, 100},
+ {3, 0x02, 102},
+ {6, 0x02, 102},
+ {10, 0x02, 102},
+ {15, 0x02, 102},
+ {24, 0x02, 102},
+ {31, 0x02, 102},
+ {41, 0x02, 102},
+ {56, 0x03, 102},
+ },
+ /* 30 */
+ {
+ {3, 0x02, 103},
+ {6, 0x02, 103},
+ {10, 0x02, 103},
+ {15, 0x02, 103},
+ {24, 0x02, 103},
+ {31, 0x02, 103},
+ {41, 0x02, 103},
+ {56, 0x03, 103},
+ {3, 0x02, 104},
+ {6, 0x02, 104},
+ {10, 0x02, 104},
+ {15, 0x02, 104},
+ {24, 0x02, 104},
+ {31, 0x02, 104},
+ {41, 0x02, 104},
+ {56, 0x03, 104},
+ },
+ /* 31 */
+ {
+ {1, 0x02, 108},
+ {22, 0x03, 108},
+ {1, 0x02, 109},
+ {22, 0x03, 109},
+ {1, 0x02, 110},
+ {22, 0x03, 110},
+ {1, 0x02, 112},
+ {22, 0x03, 112},
+ {1, 0x02, 114},
+ {22, 0x03, 114},
+ {1, 0x02, 117},
+ {22, 0x03, 117},
+ {0, 0x03, 58},
+ {0, 0x03, 66},
+ {0, 0x03, 67},
+ {0, 0x03, 68},
+ },
+ /* 32 */
+ {
+ {2, 0x02, 108},
+ {9, 0x02, 108},
+ {23, 0x02, 108},
+ {40, 0x03, 108},
+ {2, 0x02, 109},
+ {9, 0x02, 109},
+ {23, 0x02, 109},
+ {40, 0x03, 109},
+ {2, 0x02, 110},
+ {9, 0x02, 110},
+ {23, 0x02, 110},
+ {40, 0x03, 110},
+ {2, 0x02, 112},
+ {9, 0x02, 112},
+ {23, 0x02, 112},
+ {40, 0x03, 112},
+ },
+ /* 33 */
+ {
+ {3, 0x02, 108},
+ {6, 0x02, 108},
+ {10, 0x02, 108},
+ {15, 0x02, 108},
+ {24, 0x02, 108},
+ {31, 0x02, 108},
+ {41, 0x02, 108},
+ {56, 0x03, 108},
+ {3, 0x02, 109},
+ {6, 0x02, 109},
+ {10, 0x02, 109},
+ {15, 0x02, 109},
+ {24, 0x02, 109},
+ {31, 0x02, 109},
+ {41, 0x02, 109},
+ {56, 0x03, 109},
+ },
+ /* 34 */
+ {
+ {3, 0x02, 110},
+ {6, 0x02, 110},
+ {10, 0x02, 110},
+ {15, 0x02, 110},
+ {24, 0x02, 110},
+ {31, 0x02, 110},
+ {41, 0x02, 110},
+ {56, 0x03, 110},
+ {3, 0x02, 112},
+ {6, 0x02, 112},
+ {10, 0x02, 112},
+ {15, 0x02, 112},
+ {24, 0x02, 112},
+ {31, 0x02, 112},
+ {41, 0x02, 112},
+ {56, 0x03, 112},
+ },
+ /* 35 */
+ {
+ {2, 0x02, 114},
+ {9, 0x02, 114},
+ {23, 0x02, 114},
+ {40, 0x03, 114},
+ {2, 0x02, 117},
+ {9, 0x02, 117},
+ {23, 0x02, 117},
+ {40, 0x03, 117},
+ {1, 0x02, 58},
+ {22, 0x03, 58},
+ {1, 0x02, 66},
+ {22, 0x03, 66},
+ {1, 0x02, 67},
+ {22, 0x03, 67},
+ {1, 0x02, 68},
+ {22, 0x03, 68},
+ },
+ /* 36 */
+ {
+ {3, 0x02, 114},
+ {6, 0x02, 114},
+ {10, 0x02, 114},
+ {15, 0x02, 114},
+ {24, 0x02, 114},
+ {31, 0x02, 114},
+ {41, 0x02, 114},
+ {56, 0x03, 114},
+ {3, 0x02, 117},
+ {6, 0x02, 117},
+ {10, 0x02, 117},
+ {15, 0x02, 117},
+ {24, 0x02, 117},
+ {31, 0x02, 117},
+ {41, 0x02, 117},
+ {56, 0x03, 117},
+ },
+ /* 37 */
+ {
+ {2, 0x02, 58},
+ {9, 0x02, 58},
+ {23, 0x02, 58},
+ {40, 0x03, 58},
+ {2, 0x02, 66},
+ {9, 0x02, 66},
+ {23, 0x02, 66},
+ {40, 0x03, 66},
+ {2, 0x02, 67},
+ {9, 0x02, 67},
+ {23, 0x02, 67},
+ {40, 0x03, 67},
+ {2, 0x02, 68},
+ {9, 0x02, 68},
+ {23, 0x02, 68},
+ {40, 0x03, 68},
+ },
+ /* 38 */
+ {
+ {3, 0x02, 58},
+ {6, 0x02, 58},
+ {10, 0x02, 58},
+ {15, 0x02, 58},
+ {24, 0x02, 58},
+ {31, 0x02, 58},
+ {41, 0x02, 58},
+ {56, 0x03, 58},
+ {3, 0x02, 66},
+ {6, 0x02, 66},
+ {10, 0x02, 66},
+ {15, 0x02, 66},
+ {24, 0x02, 66},
+ {31, 0x02, 66},
+ {41, 0x02, 66},
+ {56, 0x03, 66},
+ },
+ /* 39 */
+ {
+ {3, 0x02, 67},
+ {6, 0x02, 67},
+ {10, 0x02, 67},
+ {15, 0x02, 67},
+ {24, 0x02, 67},
+ {31, 0x02, 67},
+ {41, 0x02, 67},
+ {56, 0x03, 67},
+ {3, 0x02, 68},
+ {6, 0x02, 68},
+ {10, 0x02, 68},
+ {15, 0x02, 68},
+ {24, 0x02, 68},
+ {31, 0x02, 68},
+ {41, 0x02, 68},
+ {56, 0x03, 68},
+ },
+ /* 40 */
+ {
+ {44, 0x00, 0},
+ {45, 0x00, 0},
+ {47, 0x00, 0},
+ {48, 0x00, 0},
+ {51, 0x00, 0},
+ {52, 0x00, 0},
+ {54, 0x00, 0},
+ {55, 0x00, 0},
+ {59, 0x00, 0},
+ {60, 0x00, 0},
+ {62, 0x00, 0},
+ {63, 0x00, 0},
+ {66, 0x00, 0},
+ {67, 0x00, 0},
+ {69, 0x00, 0},
+ {72, 0x01, 0},
+ },
+ /* 41 */
+ {
+ {0, 0x03, 69},
+ {0, 0x03, 70},
+ {0, 0x03, 71},
+ {0, 0x03, 72},
+ {0, 0x03, 73},
+ {0, 0x03, 74},
+ {0, 0x03, 75},
+ {0, 0x03, 76},
+ {0, 0x03, 77},
+ {0, 0x03, 78},
+ {0, 0x03, 79},
+ {0, 0x03, 80},
+ {0, 0x03, 81},
+ {0, 0x03, 82},
+ {0, 0x03, 83},
+ {0, 0x03, 84},
+ },
+ /* 42 */
+ {
+ {1, 0x02, 69},
+ {22, 0x03, 69},
+ {1, 0x02, 70},
+ {22, 0x03, 70},
+ {1, 0x02, 71},
+ {22, 0x03, 71},
+ {1, 0x02, 72},
+ {22, 0x03, 72},
+ {1, 0x02, 73},
+ {22, 0x03, 73},
+ {1, 0x02, 74},
+ {22, 0x03, 74},
+ {1, 0x02, 75},
+ {22, 0x03, 75},
+ {1, 0x02, 76},
+ {22, 0x03, 76},
+ },
+ /* 43 */
+ {
+ {2, 0x02, 69},
+ {9, 0x02, 69},
+ {23, 0x02, 69},
+ {40, 0x03, 69},
+ {2, 0x02, 70},
+ {9, 0x02, 70},
+ {23, 0x02, 70},
+ {40, 0x03, 70},
+ {2, 0x02, 71},
+ {9, 0x02, 71},
+ {23, 0x02, 71},
+ {40, 0x03, 71},
+ {2, 0x02, 72},
+ {9, 0x02, 72},
+ {23, 0x02, 72},
+ {40, 0x03, 72},
+ },
+ /* 44 */
+ {
+ {3, 0x02, 69},
+ {6, 0x02, 69},
+ {10, 0x02, 69},
+ {15, 0x02, 69},
+ {24, 0x02, 69},
+ {31, 0x02, 69},
+ {41, 0x02, 69},
+ {56, 0x03, 69},
+ {3, 0x02, 70},
+ {6, 0x02, 70},
+ {10, 0x02, 70},
+ {15, 0x02, 70},
+ {24, 0x02, 70},
+ {31, 0x02, 70},
+ {41, 0x02, 70},
+ {56, 0x03, 70},
+ },
+ /* 45 */
+ {
+ {3, 0x02, 71},
+ {6, 0x02, 71},
+ {10, 0x02, 71},
+ {15, 0x02, 71},
+ {24, 0x02, 71},
+ {31, 0x02, 71},
+ {41, 0x02, 71},
+ {56, 0x03, 71},
+ {3, 0x02, 72},
+ {6, 0x02, 72},
+ {10, 0x02, 72},
+ {15, 0x02, 72},
+ {24, 0x02, 72},
+ {31, 0x02, 72},
+ {41, 0x02, 72},
+ {56, 0x03, 72},
+ },
+ /* 46 */
+ {
+ {2, 0x02, 73},
+ {9, 0x02, 73},
+ {23, 0x02, 73},
+ {40, 0x03, 73},
+ {2, 0x02, 74},
+ {9, 0x02, 74},
+ {23, 0x02, 74},
+ {40, 0x03, 74},
+ {2, 0x02, 75},
+ {9, 0x02, 75},
+ {23, 0x02, 75},
+ {40, 0x03, 75},
+ {2, 0x02, 76},
+ {9, 0x02, 76},
+ {23, 0x02, 76},
+ {40, 0x03, 76},
+ },
+ /* 47 */
+ {
+ {3, 0x02, 73},
+ {6, 0x02, 73},
+ {10, 0x02, 73},
+ {15, 0x02, 73},
+ {24, 0x02, 73},
+ {31, 0x02, 73},
+ {41, 0x02, 73},
+ {56, 0x03, 73},
+ {3, 0x02, 74},
+ {6, 0x02, 74},
+ {10, 0x02, 74},
+ {15, 0x02, 74},
+ {24, 0x02, 74},
+ {31, 0x02, 74},
+ {41, 0x02, 74},
+ {56, 0x03, 74},
+ },
+ /* 48 */
+ {
+ {3, 0x02, 75},
+ {6, 0x02, 75},
+ {10, 0x02, 75},
+ {15, 0x02, 75},
+ {24, 0x02, 75},
+ {31, 0x02, 75},
+ {41, 0x02, 75},
+ {56, 0x03, 75},
+ {3, 0x02, 76},
+ {6, 0x02, 76},
+ {10, 0x02, 76},
+ {15, 0x02, 76},
+ {24, 0x02, 76},
+ {31, 0x02, 76},
+ {41, 0x02, 76},
+ {56, 0x03, 76},
+ },
+ /* 49 */
+ {
+ {1, 0x02, 77},
+ {22, 0x03, 77},
+ {1, 0x02, 78},
+ {22, 0x03, 78},
+ {1, 0x02, 79},
+ {22, 0x03, 79},
+ {1, 0x02, 80},
+ {22, 0x03, 80},
+ {1, 0x02, 81},
+ {22, 0x03, 81},
+ {1, 0x02, 82},
+ {22, 0x03, 82},
+ {1, 0x02, 83},
+ {22, 0x03, 83},
+ {1, 0x02, 84},
+ {22, 0x03, 84},
+ },
+ /* 50 */
+ {
+ {2, 0x02, 77},
+ {9, 0x02, 77},
+ {23, 0x02, 77},
+ {40, 0x03, 77},
+ {2, 0x02, 78},
+ {9, 0x02, 78},
+ {23, 0x02, 78},
+ {40, 0x03, 78},
+ {2, 0x02, 79},
+ {9, 0x02, 79},
+ {23, 0x02, 79},
+ {40, 0x03, 79},
+ {2, 0x02, 80},
+ {9, 0x02, 80},
+ {23, 0x02, 80},
+ {40, 0x03, 80},
+ },
+ /* 51 */
+ {
+ {3, 0x02, 77},
+ {6, 0x02, 77},
+ {10, 0x02, 77},
+ {15, 0x02, 77},
+ {24, 0x02, 77},
+ {31, 0x02, 77},
+ {41, 0x02, 77},
+ {56, 0x03, 77},
+ {3, 0x02, 78},
+ {6, 0x02, 78},
+ {10, 0x02, 78},
+ {15, 0x02, 78},
+ {24, 0x02, 78},
+ {31, 0x02, 78},
+ {41, 0x02, 78},
+ {56, 0x03, 78},
+ },
+ /* 52 */
+ {
+ {3, 0x02, 79},
+ {6, 0x02, 79},
+ {10, 0x02, 79},
+ {15, 0x02, 79},
+ {24, 0x02, 79},
+ {31, 0x02, 79},
+ {41, 0x02, 79},
+ {56, 0x03, 79},
+ {3, 0x02, 80},
+ {6, 0x02, 80},
+ {10, 0x02, 80},
+ {15, 0x02, 80},
+ {24, 0x02, 80},
+ {31, 0x02, 80},
+ {41, 0x02, 80},
+ {56, 0x03, 80},
+ },
+ /* 53 */
+ {
+ {2, 0x02, 81},
+ {9, 0x02, 81},
+ {23, 0x02, 81},
+ {40, 0x03, 81},
+ {2, 0x02, 82},
+ {9, 0x02, 82},
+ {23, 0x02, 82},
+ {40, 0x03, 82},
+ {2, 0x02, 83},
+ {9, 0x02, 83},
+ {23, 0x02, 83},
+ {40, 0x03, 83},
+ {2, 0x02, 84},
+ {9, 0x02, 84},
+ {23, 0x02, 84},
+ {40, 0x03, 84},
+ },
+ /* 54 */
+ {
+ {3, 0x02, 81},
+ {6, 0x02, 81},
+ {10, 0x02, 81},
+ {15, 0x02, 81},
+ {24, 0x02, 81},
+ {31, 0x02, 81},
+ {41, 0x02, 81},
+ {56, 0x03, 81},
+ {3, 0x02, 82},
+ {6, 0x02, 82},
+ {10, 0x02, 82},
+ {15, 0x02, 82},
+ {24, 0x02, 82},
+ {31, 0x02, 82},
+ {41, 0x02, 82},
+ {56, 0x03, 82},
+ },
+ /* 55 */
+ {
+ {3, 0x02, 83},
+ {6, 0x02, 83},
+ {10, 0x02, 83},
+ {15, 0x02, 83},
+ {24, 0x02, 83},
+ {31, 0x02, 83},
+ {41, 0x02, 83},
+ {56, 0x03, 83},
+ {3, 0x02, 84},
+ {6, 0x02, 84},
+ {10, 0x02, 84},
+ {15, 0x02, 84},
+ {24, 0x02, 84},
+ {31, 0x02, 84},
+ {41, 0x02, 84},
+ {56, 0x03, 84},
+ },
+ /* 56 */
+ {
+ {0, 0x03, 85},
+ {0, 0x03, 86},
+ {0, 0x03, 87},
+ {0, 0x03, 89},
+ {0, 0x03, 106},
+ {0, 0x03, 107},
+ {0, 0x03, 113},
+ {0, 0x03, 118},
+ {0, 0x03, 119},
+ {0, 0x03, 120},
+ {0, 0x03, 121},
+ {0, 0x03, 122},
+ {70, 0x00, 0},
+ {71, 0x00, 0},
+ {73, 0x00, 0},
+ {74, 0x01, 0},
+ },
+ /* 57 */
+ {
+ {1, 0x02, 85},
+ {22, 0x03, 85},
+ {1, 0x02, 86},
+ {22, 0x03, 86},
+ {1, 0x02, 87},
+ {22, 0x03, 87},
+ {1, 0x02, 89},
+ {22, 0x03, 89},
+ {1, 0x02, 106},
+ {22, 0x03, 106},
+ {1, 0x02, 107},
+ {22, 0x03, 107},
+ {1, 0x02, 113},
+ {22, 0x03, 113},
+ {1, 0x02, 118},
+ {22, 0x03, 118},
+ },
+ /* 58 */
+ {
+ {2, 0x02, 85},
+ {9, 0x02, 85},
+ {23, 0x02, 85},
+ {40, 0x03, 85},
+ {2, 0x02, 86},
+ {9, 0x02, 86},
+ {23, 0x02, 86},
+ {40, 0x03, 86},
+ {2, 0x02, 87},
+ {9, 0x02, 87},
+ {23, 0x02, 87},
+ {40, 0x03, 87},
+ {2, 0x02, 89},
+ {9, 0x02, 89},
+ {23, 0x02, 89},
+ {40, 0x03, 89},
+ },
+ /* 59 */
+ {
+ {3, 0x02, 85},
+ {6, 0x02, 85},
+ {10, 0x02, 85},
+ {15, 0x02, 85},
+ {24, 0x02, 85},
+ {31, 0x02, 85},
+ {41, 0x02, 85},
+ {56, 0x03, 85},
+ {3, 0x02, 86},
+ {6, 0x02, 86},
+ {10, 0x02, 86},
+ {15, 0x02, 86},
+ {24, 0x02, 86},
+ {31, 0x02, 86},
+ {41, 0x02, 86},
+ {56, 0x03, 86},
+ },
+ /* 60 */
+ {
+ {3, 0x02, 87},
+ {6, 0x02, 87},
+ {10, 0x02, 87},
+ {15, 0x02, 87},
+ {24, 0x02, 87},
+ {31, 0x02, 87},
+ {41, 0x02, 87},
+ {56, 0x03, 87},
+ {3, 0x02, 89},
+ {6, 0x02, 89},
+ {10, 0x02, 89},
+ {15, 0x02, 89},
+ {24, 0x02, 89},
+ {31, 0x02, 89},
+ {41, 0x02, 89},
+ {56, 0x03, 89},
+ },
+ /* 61 */
+ {
+ {2, 0x02, 106},
+ {9, 0x02, 106},
+ {23, 0x02, 106},
+ {40, 0x03, 106},
+ {2, 0x02, 107},
+ {9, 0x02, 107},
+ {23, 0x02, 107},
+ {40, 0x03, 107},
+ {2, 0x02, 113},
+ {9, 0x02, 113},
+ {23, 0x02, 113},
+ {40, 0x03, 113},
+ {2, 0x02, 118},
+ {9, 0x02, 118},
+ {23, 0x02, 118},
+ {40, 0x03, 118},
+ },
+ /* 62 */
+ {
+ {3, 0x02, 106},
+ {6, 0x02, 106},
+ {10, 0x02, 106},
+ {15, 0x02, 106},
+ {24, 0x02, 106},
+ {31, 0x02, 106},
+ {41, 0x02, 106},
+ {56, 0x03, 106},
+ {3, 0x02, 107},
+ {6, 0x02, 107},
+ {10, 0x02, 107},
+ {15, 0x02, 107},
+ {24, 0x02, 107},
+ {31, 0x02, 107},
+ {41, 0x02, 107},
+ {56, 0x03, 107},
+ },
+ /* 63 */
+ {
+ {3, 0x02, 113},
+ {6, 0x02, 113},
+ {10, 0x02, 113},
+ {15, 0x02, 113},
+ {24, 0x02, 113},
+ {31, 0x02, 113},
+ {41, 0x02, 113},
+ {56, 0x03, 113},
+ {3, 0x02, 118},
+ {6, 0x02, 118},
+ {10, 0x02, 118},
+ {15, 0x02, 118},
+ {24, 0x02, 118},
+ {31, 0x02, 118},
+ {41, 0x02, 118},
+ {56, 0x03, 118},
+ },
+ /* 64 */
+ {
+ {1, 0x02, 119},
+ {22, 0x03, 119},
+ {1, 0x02, 120},
+ {22, 0x03, 120},
+ {1, 0x02, 121},
+ {22, 0x03, 121},
+ {1, 0x02, 122},
+ {22, 0x03, 122},
+ {0, 0x03, 38},
+ {0, 0x03, 42},
+ {0, 0x03, 44},
+ {0, 0x03, 59},
+ {0, 0x03, 88},
+ {0, 0x03, 90},
+ {75, 0x00, 0},
+ {78, 0x00, 0},
+ },
+ /* 65 */
+ {
+ {2, 0x02, 119},
+ {9, 0x02, 119},
+ {23, 0x02, 119},
+ {40, 0x03, 119},
+ {2, 0x02, 120},
+ {9, 0x02, 120},
+ {23, 0x02, 120},
+ {40, 0x03, 120},
+ {2, 0x02, 121},
+ {9, 0x02, 121},
+ {23, 0x02, 121},
+ {40, 0x03, 121},
+ {2, 0x02, 122},
+ {9, 0x02, 122},
+ {23, 0x02, 122},
+ {40, 0x03, 122},
+ },
+ /* 66 */
+ {
+ {3, 0x02, 119},
+ {6, 0x02, 119},
+ {10, 0x02, 119},
+ {15, 0x02, 119},
+ {24, 0x02, 119},
+ {31, 0x02, 119},
+ {41, 0x02, 119},
+ {56, 0x03, 119},
+ {3, 0x02, 120},
+ {6, 0x02, 120},
+ {10, 0x02, 120},
+ {15, 0x02, 120},
+ {24, 0x02, 120},
+ {31, 0x02, 120},
+ {41, 0x02, 120},
+ {56, 0x03, 120},
+ },
+ /* 67 */
+ {
+ {3, 0x02, 121},
+ {6, 0x02, 121},
+ {10, 0x02, 121},
+ {15, 0x02, 121},
+ {24, 0x02, 121},
+ {31, 0x02, 121},
+ {41, 0x02, 121},
+ {56, 0x03, 121},
+ {3, 0x02, 122},
+ {6, 0x02, 122},
+ {10, 0x02, 122},
+ {15, 0x02, 122},
+ {24, 0x02, 122},
+ {31, 0x02, 122},
+ {41, 0x02, 122},
+ {56, 0x03, 122},
+ },
+ /* 68 */
+ {
+ {1, 0x02, 38},
+ {22, 0x03, 38},
+ {1, 0x02, 42},
+ {22, 0x03, 42},
+ {1, 0x02, 44},
+ {22, 0x03, 44},
+ {1, 0x02, 59},
+ {22, 0x03, 59},
+ {1, 0x02, 88},
+ {22, 0x03, 88},
+ {1, 0x02, 90},
+ {22, 0x03, 90},
+ {76, 0x00, 0},
+ {77, 0x00, 0},
+ {79, 0x00, 0},
+ {81, 0x00, 0},
+ },
+ /* 69 */
+ {
+ {2, 0x02, 38},
+ {9, 0x02, 38},
+ {23, 0x02, 38},
+ {40, 0x03, 38},
+ {2, 0x02, 42},
+ {9, 0x02, 42},
+ {23, 0x02, 42},
+ {40, 0x03, 42},
+ {2, 0x02, 44},
+ {9, 0x02, 44},
+ {23, 0x02, 44},
+ {40, 0x03, 44},
+ {2, 0x02, 59},
+ {9, 0x02, 59},
+ {23, 0x02, 59},
+ {40, 0x03, 59},
+ },
+ /* 70 */
+ {
+ {3, 0x02, 38},
+ {6, 0x02, 38},
+ {10, 0x02, 38},
+ {15, 0x02, 38},
+ {24, 0x02, 38},
+ {31, 0x02, 38},
+ {41, 0x02, 38},
+ {56, 0x03, 38},
+ {3, 0x02, 42},
+ {6, 0x02, 42},
+ {10, 0x02, 42},
+ {15, 0x02, 42},
+ {24, 0x02, 42},
+ {31, 0x02, 42},
+ {41, 0x02, 42},
+ {56, 0x03, 42},
+ },
+ /* 71 */
+ {
+ {3, 0x02, 44},
+ {6, 0x02, 44},
+ {10, 0x02, 44},
+ {15, 0x02, 44},
+ {24, 0x02, 44},
+ {31, 0x02, 44},
+ {41, 0x02, 44},
+ {56, 0x03, 44},
+ {3, 0x02, 59},
+ {6, 0x02, 59},
+ {10, 0x02, 59},
+ {15, 0x02, 59},
+ {24, 0x02, 59},
+ {31, 0x02, 59},
+ {41, 0x02, 59},
+ {56, 0x03, 59},
+ },
+ /* 72 */
+ {
+ {2, 0x02, 88},
+ {9, 0x02, 88},
+ {23, 0x02, 88},
+ {40, 0x03, 88},
+ {2, 0x02, 90},
+ {9, 0x02, 90},
+ {23, 0x02, 90},
+ {40, 0x03, 90},
+ {0, 0x03, 33},
+ {0, 0x03, 34},
+ {0, 0x03, 40},
+ {0, 0x03, 41},
+ {0, 0x03, 63},
+ {80, 0x00, 0},
+ {82, 0x00, 0},
+ {84, 0x00, 0},
+ },
+ /* 73 */
+ {
+ {3, 0x02, 88},
+ {6, 0x02, 88},
+ {10, 0x02, 88},
+ {15, 0x02, 88},
+ {24, 0x02, 88},
+ {31, 0x02, 88},
+ {41, 0x02, 88},
+ {56, 0x03, 88},
+ {3, 0x02, 90},
+ {6, 0x02, 90},
+ {10, 0x02, 90},
+ {15, 0x02, 90},
+ {24, 0x02, 90},
+ {31, 0x02, 90},
+ {41, 0x02, 90},
+ {56, 0x03, 90},
+ },
+ /* 74 */
+ {
+ {1, 0x02, 33},
+ {22, 0x03, 33},
+ {1, 0x02, 34},
+ {22, 0x03, 34},
+ {1, 0x02, 40},
+ {22, 0x03, 40},
+ {1, 0x02, 41},
+ {22, 0x03, 41},
+ {1, 0x02, 63},
+ {22, 0x03, 63},
+ {0, 0x03, 39},
+ {0, 0x03, 43},
+ {0, 0x03, 124},
+ {83, 0x00, 0},
+ {85, 0x00, 0},
+ {88, 0x00, 0},
+ },
+ /* 75 */
+ {
+ {2, 0x02, 33},
+ {9, 0x02, 33},
+ {23, 0x02, 33},
+ {40, 0x03, 33},
+ {2, 0x02, 34},
+ {9, 0x02, 34},
+ {23, 0x02, 34},
+ {40, 0x03, 34},
+ {2, 0x02, 40},
+ {9, 0x02, 40},
+ {23, 0x02, 40},
+ {40, 0x03, 40},
+ {2, 0x02, 41},
+ {9, 0x02, 41},
+ {23, 0x02, 41},
+ {40, 0x03, 41},
+ },
+ /* 76 */
+ {
+ {3, 0x02, 33},
+ {6, 0x02, 33},
+ {10, 0x02, 33},
+ {15, 0x02, 33},
+ {24, 0x02, 33},
+ {31, 0x02, 33},
+ {41, 0x02, 33},
+ {56, 0x03, 33},
+ {3, 0x02, 34},
+ {6, 0x02, 34},
+ {10, 0x02, 34},
+ {15, 0x02, 34},
+ {24, 0x02, 34},
+ {31, 0x02, 34},
+ {41, 0x02, 34},
+ {56, 0x03, 34},
+ },
+ /* 77 */
+ {
+ {3, 0x02, 40},
+ {6, 0x02, 40},
+ {10, 0x02, 40},
+ {15, 0x02, 40},
+ {24, 0x02, 40},
+ {31, 0x02, 40},
+ {41, 0x02, 40},
+ {56, 0x03, 40},
+ {3, 0x02, 41},
+ {6, 0x02, 41},
+ {10, 0x02, 41},
+ {15, 0x02, 41},
+ {24, 0x02, 41},
+ {31, 0x02, 41},
+ {41, 0x02, 41},
+ {56, 0x03, 41},
+ },
+ /* 78 */
+ {
+ {2, 0x02, 63},
+ {9, 0x02, 63},
+ {23, 0x02, 63},
+ {40, 0x03, 63},
+ {1, 0x02, 39},
+ {22, 0x03, 39},
+ {1, 0x02, 43},
+ {22, 0x03, 43},
+ {1, 0x02, 124},
+ {22, 0x03, 124},
+ {0, 0x03, 35},
+ {0, 0x03, 62},
+ {86, 0x00, 0},
+ {87, 0x00, 0},
+ {89, 0x00, 0},
+ {90, 0x00, 0},
+ },
+ /* 79 */
+ {
+ {3, 0x02, 63},
+ {6, 0x02, 63},
+ {10, 0x02, 63},
+ {15, 0x02, 63},
+ {24, 0x02, 63},
+ {31, 0x02, 63},
+ {41, 0x02, 63},
+ {56, 0x03, 63},
+ {2, 0x02, 39},
+ {9, 0x02, 39},
+ {23, 0x02, 39},
+ {40, 0x03, 39},
+ {2, 0x02, 43},
+ {9, 0x02, 43},
+ {23, 0x02, 43},
+ {40, 0x03, 43},
+ },
+ /* 80 */
+ {
+ {3, 0x02, 39},
+ {6, 0x02, 39},
+ {10, 0x02, 39},
+ {15, 0x02, 39},
+ {24, 0x02, 39},
+ {31, 0x02, 39},
+ {41, 0x02, 39},
+ {56, 0x03, 39},
+ {3, 0x02, 43},
+ {6, 0x02, 43},
+ {10, 0x02, 43},
+ {15, 0x02, 43},
+ {24, 0x02, 43},
+ {31, 0x02, 43},
+ {41, 0x02, 43},
+ {56, 0x03, 43},
+ },
+ /* 81 */
+ {
+ {2, 0x02, 124},
+ {9, 0x02, 124},
+ {23, 0x02, 124},
+ {40, 0x03, 124},
+ {1, 0x02, 35},
+ {22, 0x03, 35},
+ {1, 0x02, 62},
+ {22, 0x03, 62},
+ {0, 0x03, 0},
+ {0, 0x03, 36},
+ {0, 0x03, 64},
+ {0, 0x03, 91},
+ {0, 0x03, 93},
+ {0, 0x03, 126},
+ {91, 0x00, 0},
+ {92, 0x00, 0},
+ },
+ /* 82 */
+ {
+ {3, 0x02, 124},
+ {6, 0x02, 124},
+ {10, 0x02, 124},
+ {15, 0x02, 124},
+ {24, 0x02, 124},
+ {31, 0x02, 124},
+ {41, 0x02, 124},
+ {56, 0x03, 124},
+ {2, 0x02, 35},
+ {9, 0x02, 35},
+ {23, 0x02, 35},
+ {40, 0x03, 35},
+ {2, 0x02, 62},
+ {9, 0x02, 62},
+ {23, 0x02, 62},
+ {40, 0x03, 62},
+ },
+ /* 83 */
+ {
+ {3, 0x02, 35},
+ {6, 0x02, 35},
+ {10, 0x02, 35},
+ {15, 0x02, 35},
+ {24, 0x02, 35},
+ {31, 0x02, 35},
+ {41, 0x02, 35},
+ {56, 0x03, 35},
+ {3, 0x02, 62},
+ {6, 0x02, 62},
+ {10, 0x02, 62},
+ {15, 0x02, 62},
+ {24, 0x02, 62},
+ {31, 0x02, 62},
+ {41, 0x02, 62},
+ {56, 0x03, 62},
+ },
+ /* 84 */
+ {
+ {1, 0x02, 0},
+ {22, 0x03, 0},
+ {1, 0x02, 36},
+ {22, 0x03, 36},
+ {1, 0x02, 64},
+ {22, 0x03, 64},
+ {1, 0x02, 91},
+ {22, 0x03, 91},
+ {1, 0x02, 93},
+ {22, 0x03, 93},
+ {1, 0x02, 126},
+ {22, 0x03, 126},
+ {0, 0x03, 94},
+ {0, 0x03, 125},
+ {93, 0x00, 0},
+ {94, 0x00, 0},
+ },
+ /* 85 */
+ {
+ {2, 0x02, 0},
+ {9, 0x02, 0},
+ {23, 0x02, 0},
+ {40, 0x03, 0},
+ {2, 0x02, 36},
+ {9, 0x02, 36},
+ {23, 0x02, 36},
+ {40, 0x03, 36},
+ {2, 0x02, 64},
+ {9, 0x02, 64},
+ {23, 0x02, 64},
+ {40, 0x03, 64},
+ {2, 0x02, 91},
+ {9, 0x02, 91},
+ {23, 0x02, 91},
+ {40, 0x03, 91},
+ },
+ /* 86 */
+ {
+ {3, 0x02, 0},
+ {6, 0x02, 0},
+ {10, 0x02, 0},
+ {15, 0x02, 0},
+ {24, 0x02, 0},
+ {31, 0x02, 0},
+ {41, 0x02, 0},
+ {56, 0x03, 0},
+ {3, 0x02, 36},
+ {6, 0x02, 36},
+ {10, 0x02, 36},
+ {15, 0x02, 36},
+ {24, 0x02, 36},
+ {31, 0x02, 36},
+ {41, 0x02, 36},
+ {56, 0x03, 36},
+ },
+ /* 87 */
+ {
+ {3, 0x02, 64},
+ {6, 0x02, 64},
+ {10, 0x02, 64},
+ {15, 0x02, 64},
+ {24, 0x02, 64},
+ {31, 0x02, 64},
+ {41, 0x02, 64},
+ {56, 0x03, 64},
+ {3, 0x02, 91},
+ {6, 0x02, 91},
+ {10, 0x02, 91},
+ {15, 0x02, 91},
+ {24, 0x02, 91},
+ {31, 0x02, 91},
+ {41, 0x02, 91},
+ {56, 0x03, 91},
+ },
+ /* 88 */
+ {
+ {2, 0x02, 93},
+ {9, 0x02, 93},
+ {23, 0x02, 93},
+ {40, 0x03, 93},
+ {2, 0x02, 126},
+ {9, 0x02, 126},
+ {23, 0x02, 126},
+ {40, 0x03, 126},
+ {1, 0x02, 94},
+ {22, 0x03, 94},
+ {1, 0x02, 125},
+ {22, 0x03, 125},
+ {0, 0x03, 60},
+ {0, 0x03, 96},
+ {0, 0x03, 123},
+ {95, 0x00, 0},
+ },
+ /* 89 */
+ {
+ {3, 0x02, 93},
+ {6, 0x02, 93},
+ {10, 0x02, 93},
+ {15, 0x02, 93},
+ {24, 0x02, 93},
+ {31, 0x02, 93},
+ {41, 0x02, 93},
+ {56, 0x03, 93},
+ {3, 0x02, 126},
+ {6, 0x02, 126},
+ {10, 0x02, 126},
+ {15, 0x02, 126},
+ {24, 0x02, 126},
+ {31, 0x02, 126},
+ {41, 0x02, 126},
+ {56, 0x03, 126},
+ },
+ /* 90 */
+ {
+ {2, 0x02, 94},
+ {9, 0x02, 94},
+ {23, 0x02, 94},
+ {40, 0x03, 94},
+ {2, 0x02, 125},
+ {9, 0x02, 125},
+ {23, 0x02, 125},
+ {40, 0x03, 125},
+ {1, 0x02, 60},
+ {22, 0x03, 60},
+ {1, 0x02, 96},
+ {22, 0x03, 96},
+ {1, 0x02, 123},
+ {22, 0x03, 123},
+ {96, 0x00, 0},
+ {110, 0x00, 0},
+ },
+ /* 91 */
+ {
+ {3, 0x02, 94},
+ {6, 0x02, 94},
+ {10, 0x02, 94},
+ {15, 0x02, 94},
+ {24, 0x02, 94},
+ {31, 0x02, 94},
+ {41, 0x02, 94},
+ {56, 0x03, 94},
+ {3, 0x02, 125},
+ {6, 0x02, 125},
+ {10, 0x02, 125},
+ {15, 0x02, 125},
+ {24, 0x02, 125},
+ {31, 0x02, 125},
+ {41, 0x02, 125},
+ {56, 0x03, 125},
+ },
+ /* 92 */
+ {
+ {2, 0x02, 60},
+ {9, 0x02, 60},
+ {23, 0x02, 60},
+ {40, 0x03, 60},
+ {2, 0x02, 96},
+ {9, 0x02, 96},
+ {23, 0x02, 96},
+ {40, 0x03, 96},
+ {2, 0x02, 123},
+ {9, 0x02, 123},
+ {23, 0x02, 123},
+ {40, 0x03, 123},
+ {97, 0x00, 0},
+ {101, 0x00, 0},
+ {111, 0x00, 0},
+ {133, 0x00, 0},
+ },
+ /* 93 */
+ {
+ {3, 0x02, 60},
+ {6, 0x02, 60},
+ {10, 0x02, 60},
+ {15, 0x02, 60},
+ {24, 0x02, 60},
+ {31, 0x02, 60},
+ {41, 0x02, 60},
+ {56, 0x03, 60},
+ {3, 0x02, 96},
+ {6, 0x02, 96},
+ {10, 0x02, 96},
+ {15, 0x02, 96},
+ {24, 0x02, 96},
+ {31, 0x02, 96},
+ {41, 0x02, 96},
+ {56, 0x03, 96},
+ },
+ /* 94 */
+ {
+ {3, 0x02, 123},
+ {6, 0x02, 123},
+ {10, 0x02, 123},
+ {15, 0x02, 123},
+ {24, 0x02, 123},
+ {31, 0x02, 123},
+ {41, 0x02, 123},
+ {56, 0x03, 123},
+ {98, 0x00, 0},
+ {99, 0x00, 0},
+ {102, 0x00, 0},
+ {105, 0x00, 0},
+ {112, 0x00, 0},
+ {119, 0x00, 0},
+ {134, 0x00, 0},
+ {153, 0x00, 0},
+ },
+ /* 95 */
+ {
+ {0, 0x03, 92},
+ {0, 0x03, 195},
+ {0, 0x03, 208},
+ {100, 0x00, 0},
+ {103, 0x00, 0},
+ {104, 0x00, 0},
+ {106, 0x00, 0},
+ {107, 0x00, 0},
+ {113, 0x00, 0},
+ {116, 0x00, 0},
+ {120, 0x00, 0},
+ {126, 0x00, 0},
+ {135, 0x00, 0},
+ {142, 0x00, 0},
+ {154, 0x00, 0},
+ {169, 0x00, 0},
+ },
+ /* 96 */
+ {
+ {1, 0x02, 92},
+ {22, 0x03, 92},
+ {1, 0x02, 195},
+ {22, 0x03, 195},
+ {1, 0x02, 208},
+ {22, 0x03, 208},
+ {0, 0x03, 128},
+ {0, 0x03, 130},
+ {0, 0x03, 131},
+ {0, 0x03, 162},
+ {0, 0x03, 184},
+ {0, 0x03, 194},
+ {0, 0x03, 224},
+ {0, 0x03, 226},
+ {108, 0x00, 0},
+ {109, 0x00, 0},
+ },
+ /* 97 */
+ {
+ {2, 0x02, 92},
+ {9, 0x02, 92},
+ {23, 0x02, 92},
+ {40, 0x03, 92},
+ {2, 0x02, 195},
+ {9, 0x02, 195},
+ {23, 0x02, 195},
+ {40, 0x03, 195},
+ {2, 0x02, 208},
+ {9, 0x02, 208},
+ {23, 0x02, 208},
+ {40, 0x03, 208},
+ {1, 0x02, 128},
+ {22, 0x03, 128},
+ {1, 0x02, 130},
+ {22, 0x03, 130},
+ },
+ /* 98 */
+ {
+ {3, 0x02, 92},
+ {6, 0x02, 92},
+ {10, 0x02, 92},
+ {15, 0x02, 92},
+ {24, 0x02, 92},
+ {31, 0x02, 92},
+ {41, 0x02, 92},
+ {56, 0x03, 92},
+ {3, 0x02, 195},
+ {6, 0x02, 195},
+ {10, 0x02, 195},
+ {15, 0x02, 195},
+ {24, 0x02, 195},
+ {31, 0x02, 195},
+ {41, 0x02, 195},
+ {56, 0x03, 195},
+ },
+ /* 99 */
+ {
+ {3, 0x02, 208},
+ {6, 0x02, 208},
+ {10, 0x02, 208},
+ {15, 0x02, 208},
+ {24, 0x02, 208},
+ {31, 0x02, 208},
+ {41, 0x02, 208},
+ {56, 0x03, 208},
+ {2, 0x02, 128},
+ {9, 0x02, 128},
+ {23, 0x02, 128},
+ {40, 0x03, 128},
+ {2, 0x02, 130},
+ {9, 0x02, 130},
+ {23, 0x02, 130},
+ {40, 0x03, 130},
+ },
+ /* 100 */
+ {
+ {3, 0x02, 128},
+ {6, 0x02, 128},
+ {10, 0x02, 128},
+ {15, 0x02, 128},
+ {24, 0x02, 128},
+ {31, 0x02, 128},
+ {41, 0x02, 128},
+ {56, 0x03, 128},
+ {3, 0x02, 130},
+ {6, 0x02, 130},
+ {10, 0x02, 130},
+ {15, 0x02, 130},
+ {24, 0x02, 130},
+ {31, 0x02, 130},
+ {41, 0x02, 130},
+ {56, 0x03, 130},
+ },
+ /* 101 */
+ {
+ {1, 0x02, 131},
+ {22, 0x03, 131},
+ {1, 0x02, 162},
+ {22, 0x03, 162},
+ {1, 0x02, 184},
+ {22, 0x03, 184},
+ {1, 0x02, 194},
+ {22, 0x03, 194},
+ {1, 0x02, 224},
+ {22, 0x03, 224},
+ {1, 0x02, 226},
+ {22, 0x03, 226},
+ {0, 0x03, 153},
+ {0, 0x03, 161},
+ {0, 0x03, 167},
+ {0, 0x03, 172},
+ },
+ /* 102 */
+ {
+ {2, 0x02, 131},
+ {9, 0x02, 131},
+ {23, 0x02, 131},
+ {40, 0x03, 131},
+ {2, 0x02, 162},
+ {9, 0x02, 162},
+ {23, 0x02, 162},
+ {40, 0x03, 162},
+ {2, 0x02, 184},
+ {9, 0x02, 184},
+ {23, 0x02, 184},
+ {40, 0x03, 184},
+ {2, 0x02, 194},
+ {9, 0x02, 194},
+ {23, 0x02, 194},
+ {40, 0x03, 194},
+ },
+ /* 103 */
+ {
+ {3, 0x02, 131},
+ {6, 0x02, 131},
+ {10, 0x02, 131},
+ {15, 0x02, 131},
+ {24, 0x02, 131},
+ {31, 0x02, 131},
+ {41, 0x02, 131},
+ {56, 0x03, 131},
+ {3, 0x02, 162},
+ {6, 0x02, 162},
+ {10, 0x02, 162},
+ {15, 0x02, 162},
+ {24, 0x02, 162},
+ {31, 0x02, 162},
+ {41, 0x02, 162},
+ {56, 0x03, 162},
+ },
+ /* 104 */
+ {
+ {3, 0x02, 184},
+ {6, 0x02, 184},
+ {10, 0x02, 184},
+ {15, 0x02, 184},
+ {24, 0x02, 184},
+ {31, 0x02, 184},
+ {41, 0x02, 184},
+ {56, 0x03, 184},
+ {3, 0x02, 194},
+ {6, 0x02, 194},
+ {10, 0x02, 194},
+ {15, 0x02, 194},
+ {24, 0x02, 194},
+ {31, 0x02, 194},
+ {41, 0x02, 194},
+ {56, 0x03, 194},
+ },
+ /* 105 */
+ {
+ {2, 0x02, 224},
+ {9, 0x02, 224},
+ {23, 0x02, 224},
+ {40, 0x03, 224},
+ {2, 0x02, 226},
+ {9, 0x02, 226},
+ {23, 0x02, 226},
+ {40, 0x03, 226},
+ {1, 0x02, 153},
+ {22, 0x03, 153},
+ {1, 0x02, 161},
+ {22, 0x03, 161},
+ {1, 0x02, 167},
+ {22, 0x03, 167},
+ {1, 0x02, 172},
+ {22, 0x03, 172},
+ },
+ /* 106 */
+ {
+ {3, 0x02, 224},
+ {6, 0x02, 224},
+ {10, 0x02, 224},
+ {15, 0x02, 224},
+ {24, 0x02, 224},
+ {31, 0x02, 224},
+ {41, 0x02, 224},
+ {56, 0x03, 224},
+ {3, 0x02, 226},
+ {6, 0x02, 226},
+ {10, 0x02, 226},
+ {15, 0x02, 226},
+ {24, 0x02, 226},
+ {31, 0x02, 226},
+ {41, 0x02, 226},
+ {56, 0x03, 226},
+ },
+ /* 107 */
+ {
+ {2, 0x02, 153},
+ {9, 0x02, 153},
+ {23, 0x02, 153},
+ {40, 0x03, 153},
+ {2, 0x02, 161},
+ {9, 0x02, 161},
+ {23, 0x02, 161},
+ {40, 0x03, 161},
+ {2, 0x02, 167},
+ {9, 0x02, 167},
+ {23, 0x02, 167},
+ {40, 0x03, 167},
+ {2, 0x02, 172},
+ {9, 0x02, 172},
+ {23, 0x02, 172},
+ {40, 0x03, 172},
+ },
+ /* 108 */
+ {
+ {3, 0x02, 153},
+ {6, 0x02, 153},
+ {10, 0x02, 153},
+ {15, 0x02, 153},
+ {24, 0x02, 153},
+ {31, 0x02, 153},
+ {41, 0x02, 153},
+ {56, 0x03, 153},
+ {3, 0x02, 161},
+ {6, 0x02, 161},
+ {10, 0x02, 161},
+ {15, 0x02, 161},
+ {24, 0x02, 161},
+ {31, 0x02, 161},
+ {41, 0x02, 161},
+ {56, 0x03, 161},
+ },
+ /* 109 */
+ {
+ {3, 0x02, 167},
+ {6, 0x02, 167},
+ {10, 0x02, 167},
+ {15, 0x02, 167},
+ {24, 0x02, 167},
+ {31, 0x02, 167},
+ {41, 0x02, 167},
+ {56, 0x03, 167},
+ {3, 0x02, 172},
+ {6, 0x02, 172},
+ {10, 0x02, 172},
+ {15, 0x02, 172},
+ {24, 0x02, 172},
+ {31, 0x02, 172},
+ {41, 0x02, 172},
+ {56, 0x03, 172},
+ },
+ /* 110 */
+ {
+ {114, 0x00, 0},
+ {115, 0x00, 0},
+ {117, 0x00, 0},
+ {118, 0x00, 0},
+ {121, 0x00, 0},
+ {123, 0x00, 0},
+ {127, 0x00, 0},
+ {130, 0x00, 0},
+ {136, 0x00, 0},
+ {139, 0x00, 0},
+ {143, 0x00, 0},
+ {146, 0x00, 0},
+ {155, 0x00, 0},
+ {162, 0x00, 0},
+ {170, 0x00, 0},
+ {180, 0x00, 0},
+ },
+ /* 111 */
+ {
+ {0, 0x03, 176},
+ {0, 0x03, 177},
+ {0, 0x03, 179},
+ {0, 0x03, 209},
+ {0, 0x03, 216},
+ {0, 0x03, 217},
+ {0, 0x03, 227},
+ {0, 0x03, 229},
+ {0, 0x03, 230},
+ {122, 0x00, 0},
+ {124, 0x00, 0},
+ {125, 0x00, 0},
+ {128, 0x00, 0},
+ {129, 0x00, 0},
+ {131, 0x00, 0},
+ {132, 0x00, 0},
+ },
+ /* 112 */
+ {
+ {1, 0x02, 176},
+ {22, 0x03, 176},
+ {1, 0x02, 177},
+ {22, 0x03, 177},
+ {1, 0x02, 179},
+ {22, 0x03, 179},
+ {1, 0x02, 209},
+ {22, 0x03, 209},
+ {1, 0x02, 216},
+ {22, 0x03, 216},
+ {1, 0x02, 217},
+ {22, 0x03, 217},
+ {1, 0x02, 227},
+ {22, 0x03, 227},
+ {1, 0x02, 229},
+ {22, 0x03, 229},
+ },
+ /* 113 */
+ {
+ {2, 0x02, 176},
+ {9, 0x02, 176},
+ {23, 0x02, 176},
+ {40, 0x03, 176},
+ {2, 0x02, 177},
+ {9, 0x02, 177},
+ {23, 0x02, 177},
+ {40, 0x03, 177},
+ {2, 0x02, 179},
+ {9, 0x02, 179},
+ {23, 0x02, 179},
+ {40, 0x03, 179},
+ {2, 0x02, 209},
+ {9, 0x02, 209},
+ {23, 0x02, 209},
+ {40, 0x03, 209},
+ },
+ /* 114 */
+ {
+ {3, 0x02, 176},
+ {6, 0x02, 176},
+ {10, 0x02, 176},
+ {15, 0x02, 176},
+ {24, 0x02, 176},
+ {31, 0x02, 176},
+ {41, 0x02, 176},
+ {56, 0x03, 176},
+ {3, 0x02, 177},
+ {6, 0x02, 177},
+ {10, 0x02, 177},
+ {15, 0x02, 177},
+ {24, 0x02, 177},
+ {31, 0x02, 177},
+ {41, 0x02, 177},
+ {56, 0x03, 177},
+ },
+ /* 115 */
+ {
+ {3, 0x02, 179},
+ {6, 0x02, 179},
+ {10, 0x02, 179},
+ {15, 0x02, 179},
+ {24, 0x02, 179},
+ {31, 0x02, 179},
+ {41, 0x02, 179},
+ {56, 0x03, 179},
+ {3, 0x02, 209},
+ {6, 0x02, 209},
+ {10, 0x02, 209},
+ {15, 0x02, 209},
+ {24, 0x02, 209},
+ {31, 0x02, 209},
+ {41, 0x02, 209},
+ {56, 0x03, 209},
+ },
+ /* 116 */
+ {
+ {2, 0x02, 216},
+ {9, 0x02, 216},
+ {23, 0x02, 216},
+ {40, 0x03, 216},
+ {2, 0x02, 217},
+ {9, 0x02, 217},
+ {23, 0x02, 217},
+ {40, 0x03, 217},
+ {2, 0x02, 227},
+ {9, 0x02, 227},
+ {23, 0x02, 227},
+ {40, 0x03, 227},
+ {2, 0x02, 229},
+ {9, 0x02, 229},
+ {23, 0x02, 229},
+ {40, 0x03, 229},
+ },
+ /* 117 */
+ {
+ {3, 0x02, 216},
+ {6, 0x02, 216},
+ {10, 0x02, 216},
+ {15, 0x02, 216},
+ {24, 0x02, 216},
+ {31, 0x02, 216},
+ {41, 0x02, 216},
+ {56, 0x03, 216},
+ {3, 0x02, 217},
+ {6, 0x02, 217},
+ {10, 0x02, 217},
+ {15, 0x02, 217},
+ {24, 0x02, 217},
+ {31, 0x02, 217},
+ {41, 0x02, 217},
+ {56, 0x03, 217},
+ },
+ /* 118 */
+ {
+ {3, 0x02, 227},
+ {6, 0x02, 227},
+ {10, 0x02, 227},
+ {15, 0x02, 227},
+ {24, 0x02, 227},
+ {31, 0x02, 227},
+ {41, 0x02, 227},
+ {56, 0x03, 227},
+ {3, 0x02, 229},
+ {6, 0x02, 229},
+ {10, 0x02, 229},
+ {15, 0x02, 229},
+ {24, 0x02, 229},
+ {31, 0x02, 229},
+ {41, 0x02, 229},
+ {56, 0x03, 229},
+ },
+ /* 119 */
+ {
+ {1, 0x02, 230},
+ {22, 0x03, 230},
+ {0, 0x03, 129},
+ {0, 0x03, 132},
+ {0, 0x03, 133},
+ {0, 0x03, 134},
+ {0, 0x03, 136},
+ {0, 0x03, 146},
+ {0, 0x03, 154},
+ {0, 0x03, 156},
+ {0, 0x03, 160},
+ {0, 0x03, 163},
+ {0, 0x03, 164},
+ {0, 0x03, 169},
+ {0, 0x03, 170},
+ {0, 0x03, 173},
+ },
+ /* 120 */
+ {
+ {2, 0x02, 230},
+ {9, 0x02, 230},
+ {23, 0x02, 230},
+ {40, 0x03, 230},
+ {1, 0x02, 129},
+ {22, 0x03, 129},
+ {1, 0x02, 132},
+ {22, 0x03, 132},
+ {1, 0x02, 133},
+ {22, 0x03, 133},
+ {1, 0x02, 134},
+ {22, 0x03, 134},
+ {1, 0x02, 136},
+ {22, 0x03, 136},
+ {1, 0x02, 146},
+ {22, 0x03, 146},
+ },
+ /* 121 */
+ {
+ {3, 0x02, 230},
+ {6, 0x02, 230},
+ {10, 0x02, 230},
+ {15, 0x02, 230},
+ {24, 0x02, 230},
+ {31, 0x02, 230},
+ {41, 0x02, 230},
+ {56, 0x03, 230},
+ {2, 0x02, 129},
+ {9, 0x02, 129},
+ {23, 0x02, 129},
+ {40, 0x03, 129},
+ {2, 0x02, 132},
+ {9, 0x02, 132},
+ {23, 0x02, 132},
+ {40, 0x03, 132},
+ },
+ /* 122 */
+ {
+ {3, 0x02, 129},
+ {6, 0x02, 129},
+ {10, 0x02, 129},
+ {15, 0x02, 129},
+ {24, 0x02, 129},
+ {31, 0x02, 129},
+ {41, 0x02, 129},
+ {56, 0x03, 129},
+ {3, 0x02, 132},
+ {6, 0x02, 132},
+ {10, 0x02, 132},
+ {15, 0x02, 132},
+ {24, 0x02, 132},
+ {31, 0x02, 132},
+ {41, 0x02, 132},
+ {56, 0x03, 132},
+ },
+ /* 123 */
+ {
+ {2, 0x02, 133},
+ {9, 0x02, 133},
+ {23, 0x02, 133},
+ {40, 0x03, 133},
+ {2, 0x02, 134},
+ {9, 0x02, 134},
+ {23, 0x02, 134},
+ {40, 0x03, 134},
+ {2, 0x02, 136},
+ {9, 0x02, 136},
+ {23, 0x02, 136},
+ {40, 0x03, 136},
+ {2, 0x02, 146},
+ {9, 0x02, 146},
+ {23, 0x02, 146},
+ {40, 0x03, 146},
+ },
+ /* 124 */
+ {
+ {3, 0x02, 133},
+ {6, 0x02, 133},
+ {10, 0x02, 133},
+ {15, 0x02, 133},
+ {24, 0x02, 133},
+ {31, 0x02, 133},
+ {41, 0x02, 133},
+ {56, 0x03, 133},
+ {3, 0x02, 134},
+ {6, 0x02, 134},
+ {10, 0x02, 134},
+ {15, 0x02, 134},
+ {24, 0x02, 134},
+ {31, 0x02, 134},
+ {41, 0x02, 134},
+ {56, 0x03, 134},
+ },
+ /* 125 */
+ {
+ {3, 0x02, 136},
+ {6, 0x02, 136},
+ {10, 0x02, 136},
+ {15, 0x02, 136},
+ {24, 0x02, 136},
+ {31, 0x02, 136},
+ {41, 0x02, 136},
+ {56, 0x03, 136},
+ {3, 0x02, 146},
+ {6, 0x02, 146},
+ {10, 0x02, 146},
+ {15, 0x02, 146},
+ {24, 0x02, 146},
+ {31, 0x02, 146},
+ {41, 0x02, 146},
+ {56, 0x03, 146},
+ },
+ /* 126 */
+ {
+ {1, 0x02, 154},
+ {22, 0x03, 154},
+ {1, 0x02, 156},
+ {22, 0x03, 156},
+ {1, 0x02, 160},
+ {22, 0x03, 160},
+ {1, 0x02, 163},
+ {22, 0x03, 163},
+ {1, 0x02, 164},
+ {22, 0x03, 164},
+ {1, 0x02, 169},
+ {22, 0x03, 169},
+ {1, 0x02, 170},
+ {22, 0x03, 170},
+ {1, 0x02, 173},
+ {22, 0x03, 173},
+ },
+ /* 127 */
+ {
+ {2, 0x02, 154},
+ {9, 0x02, 154},
+ {23, 0x02, 154},
+ {40, 0x03, 154},
+ {2, 0x02, 156},
+ {9, 0x02, 156},
+ {23, 0x02, 156},
+ {40, 0x03, 156},
+ {2, 0x02, 160},
+ {9, 0x02, 160},
+ {23, 0x02, 160},
+ {40, 0x03, 160},
+ {2, 0x02, 163},
+ {9, 0x02, 163},
+ {23, 0x02, 163},
+ {40, 0x03, 163},
+ },
+ /* 128 */
+ {
+ {3, 0x02, 154},
+ {6, 0x02, 154},
+ {10, 0x02, 154},
+ {15, 0x02, 154},
+ {24, 0x02, 154},
+ {31, 0x02, 154},
+ {41, 0x02, 154},
+ {56, 0x03, 154},
+ {3, 0x02, 156},
+ {6, 0x02, 156},
+ {10, 0x02, 156},
+ {15, 0x02, 156},
+ {24, 0x02, 156},
+ {31, 0x02, 156},
+ {41, 0x02, 156},
+ {56, 0x03, 156},
+ },
+ /* 129 */
+ {
+ {3, 0x02, 160},
+ {6, 0x02, 160},
+ {10, 0x02, 160},
+ {15, 0x02, 160},
+ {24, 0x02, 160},
+ {31, 0x02, 160},
+ {41, 0x02, 160},
+ {56, 0x03, 160},
+ {3, 0x02, 163},
+ {6, 0x02, 163},
+ {10, 0x02, 163},
+ {15, 0x02, 163},
+ {24, 0x02, 163},
+ {31, 0x02, 163},
+ {41, 0x02, 163},
+ {56, 0x03, 163},
+ },
+ /* 130 */
+ {
+ {2, 0x02, 164},
+ {9, 0x02, 164},
+ {23, 0x02, 164},
+ {40, 0x03, 164},
+ {2, 0x02, 169},
+ {9, 0x02, 169},
+ {23, 0x02, 169},
+ {40, 0x03, 169},
+ {2, 0x02, 170},
+ {9, 0x02, 170},
+ {23, 0x02, 170},
+ {40, 0x03, 170},
+ {2, 0x02, 173},
+ {9, 0x02, 173},
+ {23, 0x02, 173},
+ {40, 0x03, 173},
+ },
+ /* 131 */
+ {
+ {3, 0x02, 164},
+ {6, 0x02, 164},
+ {10, 0x02, 164},
+ {15, 0x02, 164},
+ {24, 0x02, 164},
+ {31, 0x02, 164},
+ {41, 0x02, 164},
+ {56, 0x03, 164},
+ {3, 0x02, 169},
+ {6, 0x02, 169},
+ {10, 0x02, 169},
+ {15, 0x02, 169},
+ {24, 0x02, 169},
+ {31, 0x02, 169},
+ {41, 0x02, 169},
+ {56, 0x03, 169},
+ },
+ /* 132 */
+ {
+ {3, 0x02, 170},
+ {6, 0x02, 170},
+ {10, 0x02, 170},
+ {15, 0x02, 170},
+ {24, 0x02, 170},
+ {31, 0x02, 170},
+ {41, 0x02, 170},
+ {56, 0x03, 170},
+ {3, 0x02, 173},
+ {6, 0x02, 173},
+ {10, 0x02, 173},
+ {15, 0x02, 173},
+ {24, 0x02, 173},
+ {31, 0x02, 173},
+ {41, 0x02, 173},
+ {56, 0x03, 173},
+ },
+ /* 133 */
+ {
+ {137, 0x00, 0},
+ {138, 0x00, 0},
+ {140, 0x00, 0},
+ {141, 0x00, 0},
+ {144, 0x00, 0},
+ {145, 0x00, 0},
+ {147, 0x00, 0},
+ {150, 0x00, 0},
+ {156, 0x00, 0},
+ {159, 0x00, 0},
+ {163, 0x00, 0},
+ {166, 0x00, 0},
+ {171, 0x00, 0},
+ {174, 0x00, 0},
+ {181, 0x00, 0},
+ {190, 0x00, 0},
+ },
+ /* 134 */
+ {
+ {0, 0x03, 178},
+ {0, 0x03, 181},
+ {0, 0x03, 185},
+ {0, 0x03, 186},
+ {0, 0x03, 187},
+ {0, 0x03, 189},
+ {0, 0x03, 190},
+ {0, 0x03, 196},
+ {0, 0x03, 198},
+ {0, 0x03, 228},
+ {0, 0x03, 232},
+ {0, 0x03, 233},
+ {148, 0x00, 0},
+ {149, 0x00, 0},
+ {151, 0x00, 0},
+ {152, 0x00, 0},
+ },
+ /* 135 */
+ {
+ {1, 0x02, 178},
+ {22, 0x03, 178},
+ {1, 0x02, 181},
+ {22, 0x03, 181},
+ {1, 0x02, 185},
+ {22, 0x03, 185},
+ {1, 0x02, 186},
+ {22, 0x03, 186},
+ {1, 0x02, 187},
+ {22, 0x03, 187},
+ {1, 0x02, 189},
+ {22, 0x03, 189},
+ {1, 0x02, 190},
+ {22, 0x03, 190},
+ {1, 0x02, 196},
+ {22, 0x03, 196},
+ },
+ /* 136 */
+ {
+ {2, 0x02, 178},
+ {9, 0x02, 178},
+ {23, 0x02, 178},
+ {40, 0x03, 178},
+ {2, 0x02, 181},
+ {9, 0x02, 181},
+ {23, 0x02, 181},
+ {40, 0x03, 181},
+ {2, 0x02, 185},
+ {9, 0x02, 185},
+ {23, 0x02, 185},
+ {40, 0x03, 185},
+ {2, 0x02, 186},
+ {9, 0x02, 186},
+ {23, 0x02, 186},
+ {40, 0x03, 186},
+ },
+ /* 137 */
+ {
+ {3, 0x02, 178},
+ {6, 0x02, 178},
+ {10, 0x02, 178},
+ {15, 0x02, 178},
+ {24, 0x02, 178},
+ {31, 0x02, 178},
+ {41, 0x02, 178},
+ {56, 0x03, 178},
+ {3, 0x02, 181},
+ {6, 0x02, 181},
+ {10, 0x02, 181},
+ {15, 0x02, 181},
+ {24, 0x02, 181},
+ {31, 0x02, 181},
+ {41, 0x02, 181},
+ {56, 0x03, 181},
+ },
+ /* 138 */
+ {
+ {3, 0x02, 185},
+ {6, 0x02, 185},
+ {10, 0x02, 185},
+ {15, 0x02, 185},
+ {24, 0x02, 185},
+ {31, 0x02, 185},
+ {41, 0x02, 185},
+ {56, 0x03, 185},
+ {3, 0x02, 186},
+ {6, 0x02, 186},
+ {10, 0x02, 186},
+ {15, 0x02, 186},
+ {24, 0x02, 186},
+ {31, 0x02, 186},
+ {41, 0x02, 186},
+ {56, 0x03, 186},
+ },
+ /* 139 */
+ {
+ {2, 0x02, 187},
+ {9, 0x02, 187},
+ {23, 0x02, 187},
+ {40, 0x03, 187},
+ {2, 0x02, 189},
+ {9, 0x02, 189},
+ {23, 0x02, 189},
+ {40, 0x03, 189},
+ {2, 0x02, 190},
+ {9, 0x02, 190},
+ {23, 0x02, 190},
+ {40, 0x03, 190},
+ {2, 0x02, 196},
+ {9, 0x02, 196},
+ {23, 0x02, 196},
+ {40, 0x03, 196},
+ },
+ /* 140 */
+ {
+ {3, 0x02, 187},
+ {6, 0x02, 187},
+ {10, 0x02, 187},
+ {15, 0x02, 187},
+ {24, 0x02, 187},
+ {31, 0x02, 187},
+ {41, 0x02, 187},
+ {56, 0x03, 187},
+ {3, 0x02, 189},
+ {6, 0x02, 189},
+ {10, 0x02, 189},
+ {15, 0x02, 189},
+ {24, 0x02, 189},
+ {31, 0x02, 189},
+ {41, 0x02, 189},
+ {56, 0x03, 189},
+ },
+ /* 141 */
+ {
+ {3, 0x02, 190},
+ {6, 0x02, 190},
+ {10, 0x02, 190},
+ {15, 0x02, 190},
+ {24, 0x02, 190},
+ {31, 0x02, 190},
+ {41, 0x02, 190},
+ {56, 0x03, 190},
+ {3, 0x02, 196},
+ {6, 0x02, 196},
+ {10, 0x02, 196},
+ {15, 0x02, 196},
+ {24, 0x02, 196},
+ {31, 0x02, 196},
+ {41, 0x02, 196},
+ {56, 0x03, 196},
+ },
+ /* 142 */
+ {
+ {1, 0x02, 198},
+ {22, 0x03, 198},
+ {1, 0x02, 228},
+ {22, 0x03, 228},
+ {1, 0x02, 232},
+ {22, 0x03, 232},
+ {1, 0x02, 233},
+ {22, 0x03, 233},
+ {0, 0x03, 1},
+ {0, 0x03, 135},
+ {0, 0x03, 137},
+ {0, 0x03, 138},
+ {0, 0x03, 139},
+ {0, 0x03, 140},
+ {0, 0x03, 141},
+ {0, 0x03, 143},
+ },
+ /* 143 */
+ {
+ {2, 0x02, 198},
+ {9, 0x02, 198},
+ {23, 0x02, 198},
+ {40, 0x03, 198},
+ {2, 0x02, 228},
+ {9, 0x02, 228},
+ {23, 0x02, 228},
+ {40, 0x03, 228},
+ {2, 0x02, 232},
+ {9, 0x02, 232},
+ {23, 0x02, 232},
+ {40, 0x03, 232},
+ {2, 0x02, 233},
+ {9, 0x02, 233},
+ {23, 0x02, 233},
+ {40, 0x03, 233},
+ },
+ /* 144 */
+ {
+ {3, 0x02, 198},
+ {6, 0x02, 198},
+ {10, 0x02, 198},
+ {15, 0x02, 198},
+ {24, 0x02, 198},
+ {31, 0x02, 198},
+ {41, 0x02, 198},
+ {56, 0x03, 198},
+ {3, 0x02, 228},
+ {6, 0x02, 228},
+ {10, 0x02, 228},
+ {15, 0x02, 228},
+ {24, 0x02, 228},
+ {31, 0x02, 228},
+ {41, 0x02, 228},
+ {56, 0x03, 228},
+ },
+ /* 145 */
+ {
+ {3, 0x02, 232},
+ {6, 0x02, 232},
+ {10, 0x02, 232},
+ {15, 0x02, 232},
+ {24, 0x02, 232},
+ {31, 0x02, 232},
+ {41, 0x02, 232},
+ {56, 0x03, 232},
+ {3, 0x02, 233},
+ {6, 0x02, 233},
+ {10, 0x02, 233},
+ {15, 0x02, 233},
+ {24, 0x02, 233},
+ {31, 0x02, 233},
+ {41, 0x02, 233},
+ {56, 0x03, 233},
+ },
+ /* 146 */
+ {
+ {1, 0x02, 1},
+ {22, 0x03, 1},
+ {1, 0x02, 135},
+ {22, 0x03, 135},
+ {1, 0x02, 137},
+ {22, 0x03, 137},
+ {1, 0x02, 138},
+ {22, 0x03, 138},
+ {1, 0x02, 139},
+ {22, 0x03, 139},
+ {1, 0x02, 140},
+ {22, 0x03, 140},
+ {1, 0x02, 141},
+ {22, 0x03, 141},
+ {1, 0x02, 143},
+ {22, 0x03, 143},
+ },
+ /* 147 */
+ {
+ {2, 0x02, 1},
+ {9, 0x02, 1},
+ {23, 0x02, 1},
+ {40, 0x03, 1},
+ {2, 0x02, 135},
+ {9, 0x02, 135},
+ {23, 0x02, 135},
+ {40, 0x03, 135},
+ {2, 0x02, 137},
+ {9, 0x02, 137},
+ {23, 0x02, 137},
+ {40, 0x03, 137},
+ {2, 0x02, 138},
+ {9, 0x02, 138},
+ {23, 0x02, 138},
+ {40, 0x03, 138},
+ },
+ /* 148 */
+ {
+ {3, 0x02, 1},
+ {6, 0x02, 1},
+ {10, 0x02, 1},
+ {15, 0x02, 1},
+ {24, 0x02, 1},
+ {31, 0x02, 1},
+ {41, 0x02, 1},
+ {56, 0x03, 1},
+ {3, 0x02, 135},
+ {6, 0x02, 135},
+ {10, 0x02, 135},
+ {15, 0x02, 135},
+ {24, 0x02, 135},
+ {31, 0x02, 135},
+ {41, 0x02, 135},
+ {56, 0x03, 135},
+ },
+ /* 149 */
+ {
+ {3, 0x02, 137},
+ {6, 0x02, 137},
+ {10, 0x02, 137},
+ {15, 0x02, 137},
+ {24, 0x02, 137},
+ {31, 0x02, 137},
+ {41, 0x02, 137},
+ {56, 0x03, 137},
+ {3, 0x02, 138},
+ {6, 0x02, 138},
+ {10, 0x02, 138},
+ {15, 0x02, 138},
+ {24, 0x02, 138},
+ {31, 0x02, 138},
+ {41, 0x02, 138},
+ {56, 0x03, 138},
+ },
+ /* 150 */
+ {
+ {2, 0x02, 139},
+ {9, 0x02, 139},
+ {23, 0x02, 139},
+ {40, 0x03, 139},
+ {2, 0x02, 140},
+ {9, 0x02, 140},
+ {23, 0x02, 140},
+ {40, 0x03, 140},
+ {2, 0x02, 141},
+ {9, 0x02, 141},
+ {23, 0x02, 141},
+ {40, 0x03, 141},
+ {2, 0x02, 143},
+ {9, 0x02, 143},
+ {23, 0x02, 143},
+ {40, 0x03, 143},
+ },
+ /* 151 */
+ {
+ {3, 0x02, 139},
+ {6, 0x02, 139},
+ {10, 0x02, 139},
+ {15, 0x02, 139},
+ {24, 0x02, 139},
+ {31, 0x02, 139},
+ {41, 0x02, 139},
+ {56, 0x03, 139},
+ {3, 0x02, 140},
+ {6, 0x02, 140},
+ {10, 0x02, 140},
+ {15, 0x02, 140},
+ {24, 0x02, 140},
+ {31, 0x02, 140},
+ {41, 0x02, 140},
+ {56, 0x03, 140},
+ },
+ /* 152 */
+ {
+ {3, 0x02, 141},
+ {6, 0x02, 141},
+ {10, 0x02, 141},
+ {15, 0x02, 141},
+ {24, 0x02, 141},
+ {31, 0x02, 141},
+ {41, 0x02, 141},
+ {56, 0x03, 141},
+ {3, 0x02, 143},
+ {6, 0x02, 143},
+ {10, 0x02, 143},
+ {15, 0x02, 143},
+ {24, 0x02, 143},
+ {31, 0x02, 143},
+ {41, 0x02, 143},
+ {56, 0x03, 143},
+ },
+ /* 153 */
+ {
+ {157, 0x00, 0},
+ {158, 0x00, 0},
+ {160, 0x00, 0},
+ {161, 0x00, 0},
+ {164, 0x00, 0},
+ {165, 0x00, 0},
+ {167, 0x00, 0},
+ {168, 0x00, 0},
+ {172, 0x00, 0},
+ {173, 0x00, 0},
+ {175, 0x00, 0},
+ {177, 0x00, 0},
+ {182, 0x00, 0},
+ {185, 0x00, 0},
+ {191, 0x00, 0},
+ {207, 0x00, 0},
+ },
+ /* 154 */
+ {
+ {0, 0x03, 147},
+ {0, 0x03, 149},
+ {0, 0x03, 150},
+ {0, 0x03, 151},
+ {0, 0x03, 152},
+ {0, 0x03, 155},
+ {0, 0x03, 157},
+ {0, 0x03, 158},
+ {0, 0x03, 165},
+ {0, 0x03, 166},
+ {0, 0x03, 168},
+ {0, 0x03, 174},
+ {0, 0x03, 175},
+ {0, 0x03, 180},
+ {0, 0x03, 182},
+ {0, 0x03, 183},
+ },
+ /* 155 */
+ {
+ {1, 0x02, 147},
+ {22, 0x03, 147},
+ {1, 0x02, 149},
+ {22, 0x03, 149},
+ {1, 0x02, 150},
+ {22, 0x03, 150},
+ {1, 0x02, 151},
+ {22, 0x03, 151},
+ {1, 0x02, 152},
+ {22, 0x03, 152},
+ {1, 0x02, 155},
+ {22, 0x03, 155},
+ {1, 0x02, 157},
+ {22, 0x03, 157},
+ {1, 0x02, 158},
+ {22, 0x03, 158},
+ },
+ /* 156 */
+ {
+ {2, 0x02, 147},
+ {9, 0x02, 147},
+ {23, 0x02, 147},
+ {40, 0x03, 147},
+ {2, 0x02, 149},
+ {9, 0x02, 149},
+ {23, 0x02, 149},
+ {40, 0x03, 149},
+ {2, 0x02, 150},
+ {9, 0x02, 150},
+ {23, 0x02, 150},
+ {40, 0x03, 150},
+ {2, 0x02, 151},
+ {9, 0x02, 151},
+ {23, 0x02, 151},
+ {40, 0x03, 151},
+ },
+ /* 157 */
+ {
+ {3, 0x02, 147},
+ {6, 0x02, 147},
+ {10, 0x02, 147},
+ {15, 0x02, 147},
+ {24, 0x02, 147},
+ {31, 0x02, 147},
+ {41, 0x02, 147},
+ {56, 0x03, 147},
+ {3, 0x02, 149},
+ {6, 0x02, 149},
+ {10, 0x02, 149},
+ {15, 0x02, 149},
+ {24, 0x02, 149},
+ {31, 0x02, 149},
+ {41, 0x02, 149},
+ {56, 0x03, 149},
+ },
+ /* 158 */
+ {
+ {3, 0x02, 150},
+ {6, 0x02, 150},
+ {10, 0x02, 150},
+ {15, 0x02, 150},
+ {24, 0x02, 150},
+ {31, 0x02, 150},
+ {41, 0x02, 150},
+ {56, 0x03, 150},
+ {3, 0x02, 151},
+ {6, 0x02, 151},
+ {10, 0x02, 151},
+ {15, 0x02, 151},
+ {24, 0x02, 151},
+ {31, 0x02, 151},
+ {41, 0x02, 151},
+ {56, 0x03, 151},
+ },
+ /* 159 */
+ {
+ {2, 0x02, 152},
+ {9, 0x02, 152},
+ {23, 0x02, 152},
+ {40, 0x03, 152},
+ {2, 0x02, 155},
+ {9, 0x02, 155},
+ {23, 0x02, 155},
+ {40, 0x03, 155},
+ {2, 0x02, 157},
+ {9, 0x02, 157},
+ {23, 0x02, 157},
+ {40, 0x03, 157},
+ {2, 0x02, 158},
+ {9, 0x02, 158},
+ {23, 0x02, 158},
+ {40, 0x03, 158},
+ },
+ /* 160 */
+ {
+ {3, 0x02, 152},
+ {6, 0x02, 152},
+ {10, 0x02, 152},
+ {15, 0x02, 152},
+ {24, 0x02, 152},
+ {31, 0x02, 152},
+ {41, 0x02, 152},
+ {56, 0x03, 152},
+ {3, 0x02, 155},
+ {6, 0x02, 155},
+ {10, 0x02, 155},
+ {15, 0x02, 155},
+ {24, 0x02, 155},
+ {31, 0x02, 155},
+ {41, 0x02, 155},
+ {56, 0x03, 155},
+ },
+ /* 161 */
+ {
+ {3, 0x02, 157},
+ {6, 0x02, 157},
+ {10, 0x02, 157},
+ {15, 0x02, 157},
+ {24, 0x02, 157},
+ {31, 0x02, 157},
+ {41, 0x02, 157},
+ {56, 0x03, 157},
+ {3, 0x02, 158},
+ {6, 0x02, 158},
+ {10, 0x02, 158},
+ {15, 0x02, 158},
+ {24, 0x02, 158},
+ {31, 0x02, 158},
+ {41, 0x02, 158},
+ {56, 0x03, 158},
+ },
+ /* 162 */
+ {
+ {1, 0x02, 165},
+ {22, 0x03, 165},
+ {1, 0x02, 166},
+ {22, 0x03, 166},
+ {1, 0x02, 168},
+ {22, 0x03, 168},
+ {1, 0x02, 174},
+ {22, 0x03, 174},
+ {1, 0x02, 175},
+ {22, 0x03, 175},
+ {1, 0x02, 180},
+ {22, 0x03, 180},
+ {1, 0x02, 182},
+ {22, 0x03, 182},
+ {1, 0x02, 183},
+ {22, 0x03, 183},
+ },
+ /* 163 */
+ {
+ {2, 0x02, 165},
+ {9, 0x02, 165},
+ {23, 0x02, 165},
+ {40, 0x03, 165},
+ {2, 0x02, 166},
+ {9, 0x02, 166},
+ {23, 0x02, 166},
+ {40, 0x03, 166},
+ {2, 0x02, 168},
+ {9, 0x02, 168},
+ {23, 0x02, 168},
+ {40, 0x03, 168},
+ {2, 0x02, 174},
+ {9, 0x02, 174},
+ {23, 0x02, 174},
+ {40, 0x03, 174},
+ },
+ /* 164 */
+ {
+ {3, 0x02, 165},
+ {6, 0x02, 165},
+ {10, 0x02, 165},
+ {15, 0x02, 165},
+ {24, 0x02, 165},
+ {31, 0x02, 165},
+ {41, 0x02, 165},
+ {56, 0x03, 165},
+ {3, 0x02, 166},
+ {6, 0x02, 166},
+ {10, 0x02, 166},
+ {15, 0x02, 166},
+ {24, 0x02, 166},
+ {31, 0x02, 166},
+ {41, 0x02, 166},
+ {56, 0x03, 166},
+ },
+ /* 165 */
+ {
+ {3, 0x02, 168},
+ {6, 0x02, 168},
+ {10, 0x02, 168},
+ {15, 0x02, 168},
+ {24, 0x02, 168},
+ {31, 0x02, 168},
+ {41, 0x02, 168},
+ {56, 0x03, 168},
+ {3, 0x02, 174},
+ {6, 0x02, 174},
+ {10, 0x02, 174},
+ {15, 0x02, 174},
+ {24, 0x02, 174},
+ {31, 0x02, 174},
+ {41, 0x02, 174},
+ {56, 0x03, 174},
+ },
+ /* 166 */
+ {
+ {2, 0x02, 175},
+ {9, 0x02, 175},
+ {23, 0x02, 175},
+ {40, 0x03, 175},
+ {2, 0x02, 180},
+ {9, 0x02, 180},
+ {23, 0x02, 180},
+ {40, 0x03, 180},
+ {2, 0x02, 182},
+ {9, 0x02, 182},
+ {23, 0x02, 182},
+ {40, 0x03, 182},
+ {2, 0x02, 183},
+ {9, 0x02, 183},
+ {23, 0x02, 183},
+ {40, 0x03, 183},
+ },
+ /* 167 */
+ {
+ {3, 0x02, 175},
+ {6, 0x02, 175},
+ {10, 0x02, 175},
+ {15, 0x02, 175},
+ {24, 0x02, 175},
+ {31, 0x02, 175},
+ {41, 0x02, 175},
+ {56, 0x03, 175},
+ {3, 0x02, 180},
+ {6, 0x02, 180},
+ {10, 0x02, 180},
+ {15, 0x02, 180},
+ {24, 0x02, 180},
+ {31, 0x02, 180},
+ {41, 0x02, 180},
+ {56, 0x03, 180},
+ },
+ /* 168 */
+ {
+ {3, 0x02, 182},
+ {6, 0x02, 182},
+ {10, 0x02, 182},
+ {15, 0x02, 182},
+ {24, 0x02, 182},
+ {31, 0x02, 182},
+ {41, 0x02, 182},
+ {56, 0x03, 182},
+ {3, 0x02, 183},
+ {6, 0x02, 183},
+ {10, 0x02, 183},
+ {15, 0x02, 183},
+ {24, 0x02, 183},
+ {31, 0x02, 183},
+ {41, 0x02, 183},
+ {56, 0x03, 183},
+ },
+ /* 169 */
+ {
+ {0, 0x03, 188},
+ {0, 0x03, 191},
+ {0, 0x03, 197},
+ {0, 0x03, 231},
+ {0, 0x03, 239},
+ {176, 0x00, 0},
+ {178, 0x00, 0},
+ {179, 0x00, 0},
+ {183, 0x00, 0},
+ {184, 0x00, 0},
+ {186, 0x00, 0},
+ {187, 0x00, 0},
+ {192, 0x00, 0},
+ {199, 0x00, 0},
+ {208, 0x00, 0},
+ {223, 0x00, 0},
+ },
+ /* 170 */
+ {
+ {1, 0x02, 188},
+ {22, 0x03, 188},
+ {1, 0x02, 191},
+ {22, 0x03, 191},
+ {1, 0x02, 197},
+ {22, 0x03, 197},
+ {1, 0x02, 231},
+ {22, 0x03, 231},
+ {1, 0x02, 239},
+ {22, 0x03, 239},
+ {0, 0x03, 9},
+ {0, 0x03, 142},
+ {0, 0x03, 144},
+ {0, 0x03, 145},
+ {0, 0x03, 148},
+ {0, 0x03, 159},
+ },
+ /* 171 */
+ {
+ {2, 0x02, 188},
+ {9, 0x02, 188},
+ {23, 0x02, 188},
+ {40, 0x03, 188},
+ {2, 0x02, 191},
+ {9, 0x02, 191},
+ {23, 0x02, 191},
+ {40, 0x03, 191},
+ {2, 0x02, 197},
+ {9, 0x02, 197},
+ {23, 0x02, 197},
+ {40, 0x03, 197},
+ {2, 0x02, 231},
+ {9, 0x02, 231},
+ {23, 0x02, 231},
+ {40, 0x03, 231},
+ },
+ /* 172 */
+ {
+ {3, 0x02, 188},
+ {6, 0x02, 188},
+ {10, 0x02, 188},
+ {15, 0x02, 188},
+ {24, 0x02, 188},
+ {31, 0x02, 188},
+ {41, 0x02, 188},
+ {56, 0x03, 188},
+ {3, 0x02, 191},
+ {6, 0x02, 191},
+ {10, 0x02, 191},
+ {15, 0x02, 191},
+ {24, 0x02, 191},
+ {31, 0x02, 191},
+ {41, 0x02, 191},
+ {56, 0x03, 191},
+ },
+ /* 173 */
+ {
+ {3, 0x02, 197},
+ {6, 0x02, 197},
+ {10, 0x02, 197},
+ {15, 0x02, 197},
+ {24, 0x02, 197},
+ {31, 0x02, 197},
+ {41, 0x02, 197},
+ {56, 0x03, 197},
+ {3, 0x02, 231},
+ {6, 0x02, 231},
+ {10, 0x02, 231},
+ {15, 0x02, 231},
+ {24, 0x02, 231},
+ {31, 0x02, 231},
+ {41, 0x02, 231},
+ {56, 0x03, 231},
+ },
+ /* 174 */
+ {
+ {2, 0x02, 239},
+ {9, 0x02, 239},
+ {23, 0x02, 239},
+ {40, 0x03, 239},
+ {1, 0x02, 9},
+ {22, 0x03, 9},
+ {1, 0x02, 142},
+ {22, 0x03, 142},
+ {1, 0x02, 144},
+ {22, 0x03, 144},
+ {1, 0x02, 145},
+ {22, 0x03, 145},
+ {1, 0x02, 148},
+ {22, 0x03, 148},
+ {1, 0x02, 159},
+ {22, 0x03, 159},
+ },
+ /* 175 */
+ {
+ {3, 0x02, 239},
+ {6, 0x02, 239},
+ {10, 0x02, 239},
+ {15, 0x02, 239},
+ {24, 0x02, 239},
+ {31, 0x02, 239},
+ {41, 0x02, 239},
+ {56, 0x03, 239},
+ {2, 0x02, 9},
+ {9, 0x02, 9},
+ {23, 0x02, 9},
+ {40, 0x03, 9},
+ {2, 0x02, 142},
+ {9, 0x02, 142},
+ {23, 0x02, 142},
+ {40, 0x03, 142},
+ },
+ /* 176 */
+ {
+ {3, 0x02, 9},
+ {6, 0x02, 9},
+ {10, 0x02, 9},
+ {15, 0x02, 9},
+ {24, 0x02, 9},
+ {31, 0x02, 9},
+ {41, 0x02, 9},
+ {56, 0x03, 9},
+ {3, 0x02, 142},
+ {6, 0x02, 142},
+ {10, 0x02, 142},
+ {15, 0x02, 142},
+ {24, 0x02, 142},
+ {31, 0x02, 142},
+ {41, 0x02, 142},
+ {56, 0x03, 142},
+ },
+ /* 177 */
+ {
+ {2, 0x02, 144},
+ {9, 0x02, 144},
+ {23, 0x02, 144},
+ {40, 0x03, 144},
+ {2, 0x02, 145},
+ {9, 0x02, 145},
+ {23, 0x02, 145},
+ {40, 0x03, 145},
+ {2, 0x02, 148},
+ {9, 0x02, 148},
+ {23, 0x02, 148},
+ {40, 0x03, 148},
+ {2, 0x02, 159},
+ {9, 0x02, 159},
+ {23, 0x02, 159},
+ {40, 0x03, 159},
+ },
+ /* 178 */
+ {
+ {3, 0x02, 144},
+ {6, 0x02, 144},
+ {10, 0x02, 144},
+ {15, 0x02, 144},
+ {24, 0x02, 144},
+ {31, 0x02, 144},
+ {41, 0x02, 144},
+ {56, 0x03, 144},
+ {3, 0x02, 145},
+ {6, 0x02, 145},
+ {10, 0x02, 145},
+ {15, 0x02, 145},
+ {24, 0x02, 145},
+ {31, 0x02, 145},
+ {41, 0x02, 145},
+ {56, 0x03, 145},
+ },
+ /* 179 */
+ {
+ {3, 0x02, 148},
+ {6, 0x02, 148},
+ {10, 0x02, 148},
+ {15, 0x02, 148},
+ {24, 0x02, 148},
+ {31, 0x02, 148},
+ {41, 0x02, 148},
+ {56, 0x03, 148},
+ {3, 0x02, 159},
+ {6, 0x02, 159},
+ {10, 0x02, 159},
+ {15, 0x02, 159},
+ {24, 0x02, 159},
+ {31, 0x02, 159},
+ {41, 0x02, 159},
+ {56, 0x03, 159},
+ },
+ /* 180 */
+ {
+ {0, 0x03, 171},
+ {0, 0x03, 206},
+ {0, 0x03, 215},
+ {0, 0x03, 225},
+ {0, 0x03, 236},
+ {0, 0x03, 237},
+ {188, 0x00, 0},
+ {189, 0x00, 0},
+ {193, 0x00, 0},
+ {196, 0x00, 0},
+ {200, 0x00, 0},
+ {203, 0x00, 0},
+ {209, 0x00, 0},
+ {216, 0x00, 0},
+ {224, 0x00, 0},
+ {238, 0x00, 0},
+ },
+ /* 181 */
+ {
+ {1, 0x02, 171},
+ {22, 0x03, 171},
+ {1, 0x02, 206},
+ {22, 0x03, 206},
+ {1, 0x02, 215},
+ {22, 0x03, 215},
+ {1, 0x02, 225},
+ {22, 0x03, 225},
+ {1, 0x02, 236},
+ {22, 0x03, 236},
+ {1, 0x02, 237},
+ {22, 0x03, 237},
+ {0, 0x03, 199},
+ {0, 0x03, 207},
+ {0, 0x03, 234},
+ {0, 0x03, 235},
+ },
+ /* 182 */
+ {
+ {2, 0x02, 171},
+ {9, 0x02, 171},
+ {23, 0x02, 171},
+ {40, 0x03, 171},
+ {2, 0x02, 206},
+ {9, 0x02, 206},
+ {23, 0x02, 206},
+ {40, 0x03, 206},
+ {2, 0x02, 215},
+ {9, 0x02, 215},
+ {23, 0x02, 215},
+ {40, 0x03, 215},
+ {2, 0x02, 225},
+ {9, 0x02, 225},
+ {23, 0x02, 225},
+ {40, 0x03, 225},
+ },
+ /* 183 */
+ {
+ {3, 0x02, 171},
+ {6, 0x02, 171},
+ {10, 0x02, 171},
+ {15, 0x02, 171},
+ {24, 0x02, 171},
+ {31, 0x02, 171},
+ {41, 0x02, 171},
+ {56, 0x03, 171},
+ {3, 0x02, 206},
+ {6, 0x02, 206},
+ {10, 0x02, 206},
+ {15, 0x02, 206},
+ {24, 0x02, 206},
+ {31, 0x02, 206},
+ {41, 0x02, 206},
+ {56, 0x03, 206},
+ },
+ /* 184 */
+ {
+ {3, 0x02, 215},
+ {6, 0x02, 215},
+ {10, 0x02, 215},
+ {15, 0x02, 215},
+ {24, 0x02, 215},
+ {31, 0x02, 215},
+ {41, 0x02, 215},
+ {56, 0x03, 215},
+ {3, 0x02, 225},
+ {6, 0x02, 225},
+ {10, 0x02, 225},
+ {15, 0x02, 225},
+ {24, 0x02, 225},
+ {31, 0x02, 225},
+ {41, 0x02, 225},
+ {56, 0x03, 225},
+ },
+ /* 185 */
+ {
+ {2, 0x02, 236},
+ {9, 0x02, 236},
+ {23, 0x02, 236},
+ {40, 0x03, 236},
+ {2, 0x02, 237},
+ {9, 0x02, 237},
+ {23, 0x02, 237},
+ {40, 0x03, 237},
+ {1, 0x02, 199},
+ {22, 0x03, 199},
+ {1, 0x02, 207},
+ {22, 0x03, 207},
+ {1, 0x02, 234},
+ {22, 0x03, 234},
+ {1, 0x02, 235},
+ {22, 0x03, 235},
+ },
+ /* 186 */
+ {
+ {3, 0x02, 236},
+ {6, 0x02, 236},
+ {10, 0x02, 236},
+ {15, 0x02, 236},
+ {24, 0x02, 236},
+ {31, 0x02, 236},
+ {41, 0x02, 236},
+ {56, 0x03, 236},
+ {3, 0x02, 237},
+ {6, 0x02, 237},
+ {10, 0x02, 237},
+ {15, 0x02, 237},
+ {24, 0x02, 237},
+ {31, 0x02, 237},
+ {41, 0x02, 237},
+ {56, 0x03, 237},
+ },
+ /* 187 */
+ {
+ {2, 0x02, 199},
+ {9, 0x02, 199},
+ {23, 0x02, 199},
+ {40, 0x03, 199},
+ {2, 0x02, 207},
+ {9, 0x02, 207},
+ {23, 0x02, 207},
+ {40, 0x03, 207},
+ {2, 0x02, 234},
+ {9, 0x02, 234},
+ {23, 0x02, 234},
+ {40, 0x03, 234},
+ {2, 0x02, 235},
+ {9, 0x02, 235},
+ {23, 0x02, 235},
+ {40, 0x03, 235},
+ },
+ /* 188 */
+ {
+ {3, 0x02, 199},
+ {6, 0x02, 199},
+ {10, 0x02, 199},
+ {15, 0x02, 199},
+ {24, 0x02, 199},
+ {31, 0x02, 199},
+ {41, 0x02, 199},
+ {56, 0x03, 199},
+ {3, 0x02, 207},
+ {6, 0x02, 207},
+ {10, 0x02, 207},
+ {15, 0x02, 207},
+ {24, 0x02, 207},
+ {31, 0x02, 207},
+ {41, 0x02, 207},
+ {56, 0x03, 207},
+ },
+ /* 189 */
+ {
+ {3, 0x02, 234},
+ {6, 0x02, 234},
+ {10, 0x02, 234},
+ {15, 0x02, 234},
+ {24, 0x02, 234},
+ {31, 0x02, 234},
+ {41, 0x02, 234},
+ {56, 0x03, 234},
+ {3, 0x02, 235},
+ {6, 0x02, 235},
+ {10, 0x02, 235},
+ {15, 0x02, 235},
+ {24, 0x02, 235},
+ {31, 0x02, 235},
+ {41, 0x02, 235},
+ {56, 0x03, 235},
+ },
+ /* 190 */
+ {
+ {194, 0x00, 0},
+ {195, 0x00, 0},
+ {197, 0x00, 0},
+ {198, 0x00, 0},
+ {201, 0x00, 0},
+ {202, 0x00, 0},
+ {204, 0x00, 0},
+ {205, 0x00, 0},
+ {210, 0x00, 0},
+ {213, 0x00, 0},
+ {217, 0x00, 0},
+ {220, 0x00, 0},
+ {225, 0x00, 0},
+ {231, 0x00, 0},
+ {239, 0x00, 0},
+ {246, 0x00, 0},
+ },
+ /* 191 */
+ {
+ {0, 0x03, 192},
+ {0, 0x03, 193},
+ {0, 0x03, 200},
+ {0, 0x03, 201},
+ {0, 0x03, 202},
+ {0, 0x03, 205},
+ {0, 0x03, 210},
+ {0, 0x03, 213},
+ {0, 0x03, 218},
+ {0, 0x03, 219},
+ {0, 0x03, 238},
+ {0, 0x03, 240},
+ {0, 0x03, 242},
+ {0, 0x03, 243},
+ {0, 0x03, 255},
+ {206, 0x00, 0},
+ },
+ /* 192 */
+ {
+ {1, 0x02, 192},
+ {22, 0x03, 192},
+ {1, 0x02, 193},
+ {22, 0x03, 193},
+ {1, 0x02, 200},
+ {22, 0x03, 200},
+ {1, 0x02, 201},
+ {22, 0x03, 201},
+ {1, 0x02, 202},
+ {22, 0x03, 202},
+ {1, 0x02, 205},
+ {22, 0x03, 205},
+ {1, 0x02, 210},
+ {22, 0x03, 210},
+ {1, 0x02, 213},
+ {22, 0x03, 213},
+ },
+ /* 193 */
+ {
+ {2, 0x02, 192},
+ {9, 0x02, 192},
+ {23, 0x02, 192},
+ {40, 0x03, 192},
+ {2, 0x02, 193},
+ {9, 0x02, 193},
+ {23, 0x02, 193},
+ {40, 0x03, 193},
+ {2, 0x02, 200},
+ {9, 0x02, 200},
+ {23, 0x02, 200},
+ {40, 0x03, 200},
+ {2, 0x02, 201},
+ {9, 0x02, 201},
+ {23, 0x02, 201},
+ {40, 0x03, 201},
+ },
+ /* 194 */
+ {
+ {3, 0x02, 192},
+ {6, 0x02, 192},
+ {10, 0x02, 192},
+ {15, 0x02, 192},
+ {24, 0x02, 192},
+ {31, 0x02, 192},
+ {41, 0x02, 192},
+ {56, 0x03, 192},
+ {3, 0x02, 193},
+ {6, 0x02, 193},
+ {10, 0x02, 193},
+ {15, 0x02, 193},
+ {24, 0x02, 193},
+ {31, 0x02, 193},
+ {41, 0x02, 193},
+ {56, 0x03, 193},
+ },
+ /* 195 */
+ {
+ {3, 0x02, 200},
+ {6, 0x02, 200},
+ {10, 0x02, 200},
+ {15, 0x02, 200},
+ {24, 0x02, 200},
+ {31, 0x02, 200},
+ {41, 0x02, 200},
+ {56, 0x03, 200},
+ {3, 0x02, 201},
+ {6, 0x02, 201},
+ {10, 0x02, 201},
+ {15, 0x02, 201},
+ {24, 0x02, 201},
+ {31, 0x02, 201},
+ {41, 0x02, 201},
+ {56, 0x03, 201},
+ },
+ /* 196 */
+ {
+ {2, 0x02, 202},
+ {9, 0x02, 202},
+ {23, 0x02, 202},
+ {40, 0x03, 202},
+ {2, 0x02, 205},
+ {9, 0x02, 205},
+ {23, 0x02, 205},
+ {40, 0x03, 205},
+ {2, 0x02, 210},
+ {9, 0x02, 210},
+ {23, 0x02, 210},
+ {40, 0x03, 210},
+ {2, 0x02, 213},
+ {9, 0x02, 213},
+ {23, 0x02, 213},
+ {40, 0x03, 213},
+ },
+ /* 197 */
+ {
+ {3, 0x02, 202},
+ {6, 0x02, 202},
+ {10, 0x02, 202},
+ {15, 0x02, 202},
+ {24, 0x02, 202},
+ {31, 0x02, 202},
+ {41, 0x02, 202},
+ {56, 0x03, 202},
+ {3, 0x02, 205},
+ {6, 0x02, 205},
+ {10, 0x02, 205},
+ {15, 0x02, 205},
+ {24, 0x02, 205},
+ {31, 0x02, 205},
+ {41, 0x02, 205},
+ {56, 0x03, 205},
+ },
+ /* 198 */
+ {
+ {3, 0x02, 210},
+ {6, 0x02, 210},
+ {10, 0x02, 210},
+ {15, 0x02, 210},
+ {24, 0x02, 210},
+ {31, 0x02, 210},
+ {41, 0x02, 210},
+ {56, 0x03, 210},
+ {3, 0x02, 213},
+ {6, 0x02, 213},
+ {10, 0x02, 213},
+ {15, 0x02, 213},
+ {24, 0x02, 213},
+ {31, 0x02, 213},
+ {41, 0x02, 213},
+ {56, 0x03, 213},
+ },
+ /* 199 */
+ {
+ {1, 0x02, 218},
+ {22, 0x03, 218},
+ {1, 0x02, 219},
+ {22, 0x03, 219},
+ {1, 0x02, 238},
+ {22, 0x03, 238},
+ {1, 0x02, 240},
+ {22, 0x03, 240},
+ {1, 0x02, 242},
+ {22, 0x03, 242},
+ {1, 0x02, 243},
+ {22, 0x03, 243},
+ {1, 0x02, 255},
+ {22, 0x03, 255},
+ {0, 0x03, 203},
+ {0, 0x03, 204},
+ },
+ /* 200 */
+ {
+ {2, 0x02, 218},
+ {9, 0x02, 218},
+ {23, 0x02, 218},
+ {40, 0x03, 218},
+ {2, 0x02, 219},
+ {9, 0x02, 219},
+ {23, 0x02, 219},
+ {40, 0x03, 219},
+ {2, 0x02, 238},
+ {9, 0x02, 238},
+ {23, 0x02, 238},
+ {40, 0x03, 238},
+ {2, 0x02, 240},
+ {9, 0x02, 240},
+ {23, 0x02, 240},
+ {40, 0x03, 240},
+ },
+ /* 201 */
+ {
+ {3, 0x02, 218},
+ {6, 0x02, 218},
+ {10, 0x02, 218},
+ {15, 0x02, 218},
+ {24, 0x02, 218},
+ {31, 0x02, 218},
+ {41, 0x02, 218},
+ {56, 0x03, 218},
+ {3, 0x02, 219},
+ {6, 0x02, 219},
+ {10, 0x02, 219},
+ {15, 0x02, 219},
+ {24, 0x02, 219},
+ {31, 0x02, 219},
+ {41, 0x02, 219},
+ {56, 0x03, 219},
+ },
+ /* 202 */
+ {
+ {3, 0x02, 238},
+ {6, 0x02, 238},
+ {10, 0x02, 238},
+ {15, 0x02, 238},
+ {24, 0x02, 238},
+ {31, 0x02, 238},
+ {41, 0x02, 238},
+ {56, 0x03, 238},
+ {3, 0x02, 240},
+ {6, 0x02, 240},
+ {10, 0x02, 240},
+ {15, 0x02, 240},
+ {24, 0x02, 240},
+ {31, 0x02, 240},
+ {41, 0x02, 240},
+ {56, 0x03, 240},
+ },
+ /* 203 */
+ {
+ {2, 0x02, 242},
+ {9, 0x02, 242},
+ {23, 0x02, 242},
+ {40, 0x03, 242},
+ {2, 0x02, 243},
+ {9, 0x02, 243},
+ {23, 0x02, 243},
+ {40, 0x03, 243},
+ {2, 0x02, 255},
+ {9, 0x02, 255},
+ {23, 0x02, 255},
+ {40, 0x03, 255},
+ {1, 0x02, 203},
+ {22, 0x03, 203},
+ {1, 0x02, 204},
+ {22, 0x03, 204},
+ },
+ /* 204 */
+ {
+ {3, 0x02, 242},
+ {6, 0x02, 242},
+ {10, 0x02, 242},
+ {15, 0x02, 242},
+ {24, 0x02, 242},
+ {31, 0x02, 242},
+ {41, 0x02, 242},
+ {56, 0x03, 242},
+ {3, 0x02, 243},
+ {6, 0x02, 243},
+ {10, 0x02, 243},
+ {15, 0x02, 243},
+ {24, 0x02, 243},
+ {31, 0x02, 243},
+ {41, 0x02, 243},
+ {56, 0x03, 243},
+ },
+ /* 205 */
+ {
+ {3, 0x02, 255},
+ {6, 0x02, 255},
+ {10, 0x02, 255},
+ {15, 0x02, 255},
+ {24, 0x02, 255},
+ {31, 0x02, 255},
+ {41, 0x02, 255},
+ {56, 0x03, 255},
+ {2, 0x02, 203},
+ {9, 0x02, 203},
+ {23, 0x02, 203},
+ {40, 0x03, 203},
+ {2, 0x02, 204},
+ {9, 0x02, 204},
+ {23, 0x02, 204},
+ {40, 0x03, 204},
+ },
+ /* 206 */
+ {
+ {3, 0x02, 203},
+ {6, 0x02, 203},
+ {10, 0x02, 203},
+ {15, 0x02, 203},
+ {24, 0x02, 203},
+ {31, 0x02, 203},
+ {41, 0x02, 203},
+ {56, 0x03, 203},
+ {3, 0x02, 204},
+ {6, 0x02, 204},
+ {10, 0x02, 204},
+ {15, 0x02, 204},
+ {24, 0x02, 204},
+ {31, 0x02, 204},
+ {41, 0x02, 204},
+ {56, 0x03, 204},
+ },
+ /* 207 */
+ {
+ {211, 0x00, 0},
+ {212, 0x00, 0},
+ {214, 0x00, 0},
+ {215, 0x00, 0},
+ {218, 0x00, 0},
+ {219, 0x00, 0},
+ {221, 0x00, 0},
+ {222, 0x00, 0},
+ {226, 0x00, 0},
+ {228, 0x00, 0},
+ {232, 0x00, 0},
+ {235, 0x00, 0},
+ {240, 0x00, 0},
+ {243, 0x00, 0},
+ {247, 0x00, 0},
+ {250, 0x00, 0},
+ },
+ /* 208 */
+ {
+ {0, 0x03, 211},
+ {0, 0x03, 212},
+ {0, 0x03, 214},
+ {0, 0x03, 221},
+ {0, 0x03, 222},
+ {0, 0x03, 223},
+ {0, 0x03, 241},
+ {0, 0x03, 244},
+ {0, 0x03, 245},
+ {0, 0x03, 246},
+ {0, 0x03, 247},
+ {0, 0x03, 248},
+ {0, 0x03, 250},
+ {0, 0x03, 251},
+ {0, 0x03, 252},
+ {0, 0x03, 253},
+ },
+ /* 209 */
+ {
+ {1, 0x02, 211},
+ {22, 0x03, 211},
+ {1, 0x02, 212},
+ {22, 0x03, 212},
+ {1, 0x02, 214},
+ {22, 0x03, 214},
+ {1, 0x02, 221},
+ {22, 0x03, 221},
+ {1, 0x02, 222},
+ {22, 0x03, 222},
+ {1, 0x02, 223},
+ {22, 0x03, 223},
+ {1, 0x02, 241},
+ {22, 0x03, 241},
+ {1, 0x02, 244},
+ {22, 0x03, 244},
+ },
+ /* 210 */
+ {
+ {2, 0x02, 211},
+ {9, 0x02, 211},
+ {23, 0x02, 211},
+ {40, 0x03, 211},
+ {2, 0x02, 212},
+ {9, 0x02, 212},
+ {23, 0x02, 212},
+ {40, 0x03, 212},
+ {2, 0x02, 214},
+ {9, 0x02, 214},
+ {23, 0x02, 214},
+ {40, 0x03, 214},
+ {2, 0x02, 221},
+ {9, 0x02, 221},
+ {23, 0x02, 221},
+ {40, 0x03, 221},
+ },
+ /* 211 */
+ {
+ {3, 0x02, 211},
+ {6, 0x02, 211},
+ {10, 0x02, 211},
+ {15, 0x02, 211},
+ {24, 0x02, 211},
+ {31, 0x02, 211},
+ {41, 0x02, 211},
+ {56, 0x03, 211},
+ {3, 0x02, 212},
+ {6, 0x02, 212},
+ {10, 0x02, 212},
+ {15, 0x02, 212},
+ {24, 0x02, 212},
+ {31, 0x02, 212},
+ {41, 0x02, 212},
+ {56, 0x03, 212},
+ },
+ /* 212 */
+ {
+ {3, 0x02, 214},
+ {6, 0x02, 214},
+ {10, 0x02, 214},
+ {15, 0x02, 214},
+ {24, 0x02, 214},
+ {31, 0x02, 214},
+ {41, 0x02, 214},
+ {56, 0x03, 214},
+ {3, 0x02, 221},
+ {6, 0x02, 221},
+ {10, 0x02, 221},
+ {15, 0x02, 221},
+ {24, 0x02, 221},
+ {31, 0x02, 221},
+ {41, 0x02, 221},
+ {56, 0x03, 221},
+ },
+ /* 213 */
+ {
+ {2, 0x02, 222},
+ {9, 0x02, 222},
+ {23, 0x02, 222},
+ {40, 0x03, 222},
+ {2, 0x02, 223},
+ {9, 0x02, 223},
+ {23, 0x02, 223},
+ {40, 0x03, 223},
+ {2, 0x02, 241},
+ {9, 0x02, 241},
+ {23, 0x02, 241},
+ {40, 0x03, 241},
+ {2, 0x02, 244},
+ {9, 0x02, 244},
+ {23, 0x02, 244},
+ {40, 0x03, 244},
+ },
+ /* 214 */
+ {
+ {3, 0x02, 222},
+ {6, 0x02, 222},
+ {10, 0x02, 222},
+ {15, 0x02, 222},
+ {24, 0x02, 222},
+ {31, 0x02, 222},
+ {41, 0x02, 222},
+ {56, 0x03, 222},
+ {3, 0x02, 223},
+ {6, 0x02, 223},
+ {10, 0x02, 223},
+ {15, 0x02, 223},
+ {24, 0x02, 223},
+ {31, 0x02, 223},
+ {41, 0x02, 223},
+ {56, 0x03, 223},
+ },
+ /* 215 */
+ {
+ {3, 0x02, 241},
+ {6, 0x02, 241},
+ {10, 0x02, 241},
+ {15, 0x02, 241},
+ {24, 0x02, 241},
+ {31, 0x02, 241},
+ {41, 0x02, 241},
+ {56, 0x03, 241},
+ {3, 0x02, 244},
+ {6, 0x02, 244},
+ {10, 0x02, 244},
+ {15, 0x02, 244},
+ {24, 0x02, 244},
+ {31, 0x02, 244},
+ {41, 0x02, 244},
+ {56, 0x03, 244},
+ },
+ /* 216 */
+ {
+ {1, 0x02, 245},
+ {22, 0x03, 245},
+ {1, 0x02, 246},
+ {22, 0x03, 246},
+ {1, 0x02, 247},
+ {22, 0x03, 247},
+ {1, 0x02, 248},
+ {22, 0x03, 248},
+ {1, 0x02, 250},
+ {22, 0x03, 250},
+ {1, 0x02, 251},
+ {22, 0x03, 251},
+ {1, 0x02, 252},
+ {22, 0x03, 252},
+ {1, 0x02, 253},
+ {22, 0x03, 253},
+ },
+ /* 217 */
+ {
+ {2, 0x02, 245},
+ {9, 0x02, 245},
+ {23, 0x02, 245},
+ {40, 0x03, 245},
+ {2, 0x02, 246},
+ {9, 0x02, 246},
+ {23, 0x02, 246},
+ {40, 0x03, 246},
+ {2, 0x02, 247},
+ {9, 0x02, 247},
+ {23, 0x02, 247},
+ {40, 0x03, 247},
+ {2, 0x02, 248},
+ {9, 0x02, 248},
+ {23, 0x02, 248},
+ {40, 0x03, 248},
+ },
+ /* 218 */
+ {
+ {3, 0x02, 245},
+ {6, 0x02, 245},
+ {10, 0x02, 245},
+ {15, 0x02, 245},
+ {24, 0x02, 245},
+ {31, 0x02, 245},
+ {41, 0x02, 245},
+ {56, 0x03, 245},
+ {3, 0x02, 246},
+ {6, 0x02, 246},
+ {10, 0x02, 246},
+ {15, 0x02, 246},
+ {24, 0x02, 246},
+ {31, 0x02, 246},
+ {41, 0x02, 246},
+ {56, 0x03, 246},
+ },
+ /* 219 */
+ {
+ {3, 0x02, 247},
+ {6, 0x02, 247},
+ {10, 0x02, 247},
+ {15, 0x02, 247},
+ {24, 0x02, 247},
+ {31, 0x02, 247},
+ {41, 0x02, 247},
+ {56, 0x03, 247},
+ {3, 0x02, 248},
+ {6, 0x02, 248},
+ {10, 0x02, 248},
+ {15, 0x02, 248},
+ {24, 0x02, 248},
+ {31, 0x02, 248},
+ {41, 0x02, 248},
+ {56, 0x03, 248},
+ },
+ /* 220 */
+ {
+ {2, 0x02, 250},
+ {9, 0x02, 250},
+ {23, 0x02, 250},
+ {40, 0x03, 250},
+ {2, 0x02, 251},
+ {9, 0x02, 251},
+ {23, 0x02, 251},
+ {40, 0x03, 251},
+ {2, 0x02, 252},
+ {9, 0x02, 252},
+ {23, 0x02, 252},
+ {40, 0x03, 252},
+ {2, 0x02, 253},
+ {9, 0x02, 253},
+ {23, 0x02, 253},
+ {40, 0x03, 253},
+ },
+ /* 221 */
+ {
+ {3, 0x02, 250},
+ {6, 0x02, 250},
+ {10, 0x02, 250},
+ {15, 0x02, 250},
+ {24, 0x02, 250},
+ {31, 0x02, 250},
+ {41, 0x02, 250},
+ {56, 0x03, 250},
+ {3, 0x02, 251},
+ {6, 0x02, 251},
+ {10, 0x02, 251},
+ {15, 0x02, 251},
+ {24, 0x02, 251},
+ {31, 0x02, 251},
+ {41, 0x02, 251},
+ {56, 0x03, 251},
+ },
+ /* 222 */
+ {
+ {3, 0x02, 252},
+ {6, 0x02, 252},
+ {10, 0x02, 252},
+ {15, 0x02, 252},
+ {24, 0x02, 252},
+ {31, 0x02, 252},
+ {41, 0x02, 252},
+ {56, 0x03, 252},
+ {3, 0x02, 253},
+ {6, 0x02, 253},
+ {10, 0x02, 253},
+ {15, 0x02, 253},
+ {24, 0x02, 253},
+ {31, 0x02, 253},
+ {41, 0x02, 253},
+ {56, 0x03, 253},
+ },
+ /* 223 */
+ {
+ {0, 0x03, 254},
+ {227, 0x00, 0},
+ {229, 0x00, 0},
+ {230, 0x00, 0},
+ {233, 0x00, 0},
+ {234, 0x00, 0},
+ {236, 0x00, 0},
+ {237, 0x00, 0},
+ {241, 0x00, 0},
+ {242, 0x00, 0},
+ {244, 0x00, 0},
+ {245, 0x00, 0},
+ {248, 0x00, 0},
+ {249, 0x00, 0},
+ {251, 0x00, 0},
+ {252, 0x00, 0},
+ },
+ /* 224 */
+ {
+ {1, 0x02, 254},
+ {22, 0x03, 254},
+ {0, 0x03, 2},
+ {0, 0x03, 3},
+ {0, 0x03, 4},
+ {0, 0x03, 5},
+ {0, 0x03, 6},
+ {0, 0x03, 7},
+ {0, 0x03, 8},
+ {0, 0x03, 11},
+ {0, 0x03, 12},
+ {0, 0x03, 14},
+ {0, 0x03, 15},
+ {0, 0x03, 16},
+ {0, 0x03, 17},
+ {0, 0x03, 18},
+ },
+ /* 225 */
+ {
+ {2, 0x02, 254},
+ {9, 0x02, 254},
+ {23, 0x02, 254},
+ {40, 0x03, 254},
+ {1, 0x02, 2},
+ {22, 0x03, 2},
+ {1, 0x02, 3},
+ {22, 0x03, 3},
+ {1, 0x02, 4},
+ {22, 0x03, 4},
+ {1, 0x02, 5},
+ {22, 0x03, 5},
+ {1, 0x02, 6},
+ {22, 0x03, 6},
+ {1, 0x02, 7},
+ {22, 0x03, 7},
+ },
+ /* 226 */
+ {
+ {3, 0x02, 254},
+ {6, 0x02, 254},
+ {10, 0x02, 254},
+ {15, 0x02, 254},
+ {24, 0x02, 254},
+ {31, 0x02, 254},
+ {41, 0x02, 254},
+ {56, 0x03, 254},
+ {2, 0x02, 2},
+ {9, 0x02, 2},
+ {23, 0x02, 2},
+ {40, 0x03, 2},
+ {2, 0x02, 3},
+ {9, 0x02, 3},
+ {23, 0x02, 3},
+ {40, 0x03, 3},
+ },
+ /* 227 */
+ {
+ {3, 0x02, 2},
+ {6, 0x02, 2},
+ {10, 0x02, 2},
+ {15, 0x02, 2},
+ {24, 0x02, 2},
+ {31, 0x02, 2},
+ {41, 0x02, 2},
+ {56, 0x03, 2},
+ {3, 0x02, 3},
+ {6, 0x02, 3},
+ {10, 0x02, 3},
+ {15, 0x02, 3},
+ {24, 0x02, 3},
+ {31, 0x02, 3},
+ {41, 0x02, 3},
+ {56, 0x03, 3},
+ },
+ /* 228 */
+ {
+ {2, 0x02, 4},
+ {9, 0x02, 4},
+ {23, 0x02, 4},
+ {40, 0x03, 4},
+ {2, 0x02, 5},
+ {9, 0x02, 5},
+ {23, 0x02, 5},
+ {40, 0x03, 5},
+ {2, 0x02, 6},
+ {9, 0x02, 6},
+ {23, 0x02, 6},
+ {40, 0x03, 6},
+ {2, 0x02, 7},
+ {9, 0x02, 7},
+ {23, 0x02, 7},
+ {40, 0x03, 7},
+ },
+ /* 229 */
+ {
+ {3, 0x02, 4},
+ {6, 0x02, 4},
+ {10, 0x02, 4},
+ {15, 0x02, 4},
+ {24, 0x02, 4},
+ {31, 0x02, 4},
+ {41, 0x02, 4},
+ {56, 0x03, 4},
+ {3, 0x02, 5},
+ {6, 0x02, 5},
+ {10, 0x02, 5},
+ {15, 0x02, 5},
+ {24, 0x02, 5},
+ {31, 0x02, 5},
+ {41, 0x02, 5},
+ {56, 0x03, 5},
+ },
+ /* 230 */
+ {
+ {3, 0x02, 6},
+ {6, 0x02, 6},
+ {10, 0x02, 6},
+ {15, 0x02, 6},
+ {24, 0x02, 6},
+ {31, 0x02, 6},
+ {41, 0x02, 6},
+ {56, 0x03, 6},
+ {3, 0x02, 7},
+ {6, 0x02, 7},
+ {10, 0x02, 7},
+ {15, 0x02, 7},
+ {24, 0x02, 7},
+ {31, 0x02, 7},
+ {41, 0x02, 7},
+ {56, 0x03, 7},
+ },
+ /* 231 */
+ {
+ {1, 0x02, 8},
+ {22, 0x03, 8},
+ {1, 0x02, 11},
+ {22, 0x03, 11},
+ {1, 0x02, 12},
+ {22, 0x03, 12},
+ {1, 0x02, 14},
+ {22, 0x03, 14},
+ {1, 0x02, 15},
+ {22, 0x03, 15},
+ {1, 0x02, 16},
+ {22, 0x03, 16},
+ {1, 0x02, 17},
+ {22, 0x03, 17},
+ {1, 0x02, 18},
+ {22, 0x03, 18},
+ },
+ /* 232 */
+ {
+ {2, 0x02, 8},
+ {9, 0x02, 8},
+ {23, 0x02, 8},
+ {40, 0x03, 8},
+ {2, 0x02, 11},
+ {9, 0x02, 11},
+ {23, 0x02, 11},
+ {40, 0x03, 11},
+ {2, 0x02, 12},
+ {9, 0x02, 12},
+ {23, 0x02, 12},
+ {40, 0x03, 12},
+ {2, 0x02, 14},
+ {9, 0x02, 14},
+ {23, 0x02, 14},
+ {40, 0x03, 14},
+ },
+ /* 233 */
+ {
+ {3, 0x02, 8},
+ {6, 0x02, 8},
+ {10, 0x02, 8},
+ {15, 0x02, 8},
+ {24, 0x02, 8},
+ {31, 0x02, 8},
+ {41, 0x02, 8},
+ {56, 0x03, 8},
+ {3, 0x02, 11},
+ {6, 0x02, 11},
+ {10, 0x02, 11},
+ {15, 0x02, 11},
+ {24, 0x02, 11},
+ {31, 0x02, 11},
+ {41, 0x02, 11},
+ {56, 0x03, 11},
+ },
+ /* 234 */
+ {
+ {3, 0x02, 12},
+ {6, 0x02, 12},
+ {10, 0x02, 12},
+ {15, 0x02, 12},
+ {24, 0x02, 12},
+ {31, 0x02, 12},
+ {41, 0x02, 12},
+ {56, 0x03, 12},
+ {3, 0x02, 14},
+ {6, 0x02, 14},
+ {10, 0x02, 14},
+ {15, 0x02, 14},
+ {24, 0x02, 14},
+ {31, 0x02, 14},
+ {41, 0x02, 14},
+ {56, 0x03, 14},
+ },
+ /* 235 */
+ {
+ {2, 0x02, 15},
+ {9, 0x02, 15},
+ {23, 0x02, 15},
+ {40, 0x03, 15},
+ {2, 0x02, 16},
+ {9, 0x02, 16},
+ {23, 0x02, 16},
+ {40, 0x03, 16},
+ {2, 0x02, 17},
+ {9, 0x02, 17},
+ {23, 0x02, 17},
+ {40, 0x03, 17},
+ {2, 0x02, 18},
+ {9, 0x02, 18},
+ {23, 0x02, 18},
+ {40, 0x03, 18},
+ },
+ /* 236 */
+ {
+ {3, 0x02, 15},
+ {6, 0x02, 15},
+ {10, 0x02, 15},
+ {15, 0x02, 15},
+ {24, 0x02, 15},
+ {31, 0x02, 15},
+ {41, 0x02, 15},
+ {56, 0x03, 15},
+ {3, 0x02, 16},
+ {6, 0x02, 16},
+ {10, 0x02, 16},
+ {15, 0x02, 16},
+ {24, 0x02, 16},
+ {31, 0x02, 16},
+ {41, 0x02, 16},
+ {56, 0x03, 16},
+ },
+ /* 237 */
+ {
+ {3, 0x02, 17},
+ {6, 0x02, 17},
+ {10, 0x02, 17},
+ {15, 0x02, 17},
+ {24, 0x02, 17},
+ {31, 0x02, 17},
+ {41, 0x02, 17},
+ {56, 0x03, 17},
+ {3, 0x02, 18},
+ {6, 0x02, 18},
+ {10, 0x02, 18},
+ {15, 0x02, 18},
+ {24, 0x02, 18},
+ {31, 0x02, 18},
+ {41, 0x02, 18},
+ {56, 0x03, 18},
+ },
+ /* 238 */
+ {
+ {0, 0x03, 19},
+ {0, 0x03, 20},
+ {0, 0x03, 21},
+ {0, 0x03, 23},
+ {0, 0x03, 24},
+ {0, 0x03, 25},
+ {0, 0x03, 26},
+ {0, 0x03, 27},
+ {0, 0x03, 28},
+ {0, 0x03, 29},
+ {0, 0x03, 30},
+ {0, 0x03, 31},
+ {0, 0x03, 127},
+ {0, 0x03, 220},
+ {0, 0x03, 249},
+ {253, 0x00, 0},
+ },
+ /* 239 */
+ {
+ {1, 0x02, 19},
+ {22, 0x03, 19},
+ {1, 0x02, 20},
+ {22, 0x03, 20},
+ {1, 0x02, 21},
+ {22, 0x03, 21},
+ {1, 0x02, 23},
+ {22, 0x03, 23},
+ {1, 0x02, 24},
+ {22, 0x03, 24},
+ {1, 0x02, 25},
+ {22, 0x03, 25},
+ {1, 0x02, 26},
+ {22, 0x03, 26},
+ {1, 0x02, 27},
+ {22, 0x03, 27},
+ },
+ /* 240 */
+ {
+ {2, 0x02, 19},
+ {9, 0x02, 19},
+ {23, 0x02, 19},
+ {40, 0x03, 19},
+ {2, 0x02, 20},
+ {9, 0x02, 20},
+ {23, 0x02, 20},
+ {40, 0x03, 20},
+ {2, 0x02, 21},
+ {9, 0x02, 21},
+ {23, 0x02, 21},
+ {40, 0x03, 21},
+ {2, 0x02, 23},
+ {9, 0x02, 23},
+ {23, 0x02, 23},
+ {40, 0x03, 23},
+ },
+ /* 241 */
+ {
+ {3, 0x02, 19},
+ {6, 0x02, 19},
+ {10, 0x02, 19},
+ {15, 0x02, 19},
+ {24, 0x02, 19},
+ {31, 0x02, 19},
+ {41, 0x02, 19},
+ {56, 0x03, 19},
+ {3, 0x02, 20},
+ {6, 0x02, 20},
+ {10, 0x02, 20},
+ {15, 0x02, 20},
+ {24, 0x02, 20},
+ {31, 0x02, 20},
+ {41, 0x02, 20},
+ {56, 0x03, 20},
+ },
+ /* 242 */
+ {
+ {3, 0x02, 21},
+ {6, 0x02, 21},
+ {10, 0x02, 21},
+ {15, 0x02, 21},
+ {24, 0x02, 21},
+ {31, 0x02, 21},
+ {41, 0x02, 21},
+ {56, 0x03, 21},
+ {3, 0x02, 23},
+ {6, 0x02, 23},
+ {10, 0x02, 23},
+ {15, 0x02, 23},
+ {24, 0x02, 23},
+ {31, 0x02, 23},
+ {41, 0x02, 23},
+ {56, 0x03, 23},
+ },
+ /* 243 */
+ {
+ {2, 0x02, 24},
+ {9, 0x02, 24},
+ {23, 0x02, 24},
+ {40, 0x03, 24},
+ {2, 0x02, 25},
+ {9, 0x02, 25},
+ {23, 0x02, 25},
+ {40, 0x03, 25},
+ {2, 0x02, 26},
+ {9, 0x02, 26},
+ {23, 0x02, 26},
+ {40, 0x03, 26},
+ {2, 0x02, 27},
+ {9, 0x02, 27},
+ {23, 0x02, 27},
+ {40, 0x03, 27},
+ },
+ /* 244 */
+ {
+ {3, 0x02, 24},
+ {6, 0x02, 24},
+ {10, 0x02, 24},
+ {15, 0x02, 24},
+ {24, 0x02, 24},
+ {31, 0x02, 24},
+ {41, 0x02, 24},
+ {56, 0x03, 24},
+ {3, 0x02, 25},
+ {6, 0x02, 25},
+ {10, 0x02, 25},
+ {15, 0x02, 25},
+ {24, 0x02, 25},
+ {31, 0x02, 25},
+ {41, 0x02, 25},
+ {56, 0x03, 25},
+ },
+ /* 245 */
+ {
+ {3, 0x02, 26},
+ {6, 0x02, 26},
+ {10, 0x02, 26},
+ {15, 0x02, 26},
+ {24, 0x02, 26},
+ {31, 0x02, 26},
+ {41, 0x02, 26},
+ {56, 0x03, 26},
+ {3, 0x02, 27},
+ {6, 0x02, 27},
+ {10, 0x02, 27},
+ {15, 0x02, 27},
+ {24, 0x02, 27},
+ {31, 0x02, 27},
+ {41, 0x02, 27},
+ {56, 0x03, 27},
+ },
+ /* 246 */
+ {
+ {1, 0x02, 28},
+ {22, 0x03, 28},
+ {1, 0x02, 29},
+ {22, 0x03, 29},
+ {1, 0x02, 30},
+ {22, 0x03, 30},
+ {1, 0x02, 31},
+ {22, 0x03, 31},
+ {1, 0x02, 127},
+ {22, 0x03, 127},
+ {1, 0x02, 220},
+ {22, 0x03, 220},
+ {1, 0x02, 249},
+ {22, 0x03, 249},
+ {254, 0x00, 0},
+ {255, 0x00, 0},
+ },
+ /* 247 */
+ {
+ {2, 0x02, 28},
+ {9, 0x02, 28},
+ {23, 0x02, 28},
+ {40, 0x03, 28},
+ {2, 0x02, 29},
+ {9, 0x02, 29},
+ {23, 0x02, 29},
+ {40, 0x03, 29},
+ {2, 0x02, 30},
+ {9, 0x02, 30},
+ {23, 0x02, 30},
+ {40, 0x03, 30},
+ {2, 0x02, 31},
+ {9, 0x02, 31},
+ {23, 0x02, 31},
+ {40, 0x03, 31},
+ },
+ /* 248 */
+ {
+ {3, 0x02, 28},
+ {6, 0x02, 28},
+ {10, 0x02, 28},
+ {15, 0x02, 28},
+ {24, 0x02, 28},
+ {31, 0x02, 28},
+ {41, 0x02, 28},
+ {56, 0x03, 28},
+ {3, 0x02, 29},
+ {6, 0x02, 29},
+ {10, 0x02, 29},
+ {15, 0x02, 29},
+ {24, 0x02, 29},
+ {31, 0x02, 29},
+ {41, 0x02, 29},
+ {56, 0x03, 29},
+ },
+ /* 249 */
+ {
+ {3, 0x02, 30},
+ {6, 0x02, 30},
+ {10, 0x02, 30},
+ {15, 0x02, 30},
+ {24, 0x02, 30},
+ {31, 0x02, 30},
+ {41, 0x02, 30},
+ {56, 0x03, 30},
+ {3, 0x02, 31},
+ {6, 0x02, 31},
+ {10, 0x02, 31},
+ {15, 0x02, 31},
+ {24, 0x02, 31},
+ {31, 0x02, 31},
+ {41, 0x02, 31},
+ {56, 0x03, 31},
+ },
+ /* 250 */
+ {
+ {2, 0x02, 127},
+ {9, 0x02, 127},
+ {23, 0x02, 127},
+ {40, 0x03, 127},
+ {2, 0x02, 220},
+ {9, 0x02, 220},
+ {23, 0x02, 220},
+ {40, 0x03, 220},
+ {2, 0x02, 249},
+ {9, 0x02, 249},
+ {23, 0x02, 249},
+ {40, 0x03, 249},
+ {0, 0x03, 10},
+ {0, 0x03, 13},
+ {0, 0x03, 22},
+ {0, 0x04, 0},
+ },
+ /* 251 */
+ {
+ {3, 0x02, 127},
+ {6, 0x02, 127},
+ {10, 0x02, 127},
+ {15, 0x02, 127},
+ {24, 0x02, 127},
+ {31, 0x02, 127},
+ {41, 0x02, 127},
+ {56, 0x03, 127},
+ {3, 0x02, 220},
+ {6, 0x02, 220},
+ {10, 0x02, 220},
+ {15, 0x02, 220},
+ {24, 0x02, 220},
+ {31, 0x02, 220},
+ {41, 0x02, 220},
+ {56, 0x03, 220},
+ },
+ /* 252 */
+ {
+ {3, 0x02, 249},
+ {6, 0x02, 249},
+ {10, 0x02, 249},
+ {15, 0x02, 249},
+ {24, 0x02, 249},
+ {31, 0x02, 249},
+ {41, 0x02, 249},
+ {56, 0x03, 249},
+ {1, 0x02, 10},
+ {22, 0x03, 10},
+ {1, 0x02, 13},
+ {22, 0x03, 13},
+ {1, 0x02, 22},
+ {22, 0x03, 22},
+ {0, 0x04, 0},
+ {0, 0x04, 0},
+ },
+ /* 253 */
+ {
+ {2, 0x02, 10},
+ {9, 0x02, 10},
+ {23, 0x02, 10},
+ {40, 0x03, 10},
+ {2, 0x02, 13},
+ {9, 0x02, 13},
+ {23, 0x02, 13},
+ {40, 0x03, 13},
+ {2, 0x02, 22},
+ {9, 0x02, 22},
+ {23, 0x02, 22},
+ {40, 0x03, 22},
+ {0, 0x04, 0},
+ {0, 0x04, 0},
+ {0, 0x04, 0},
+ {0, 0x04, 0},
+ },
+ /* 254 */
+ {
+ {3, 0x02, 10},
+ {6, 0x02, 10},
+ {10, 0x02, 10},
+ {15, 0x02, 10},
+ {24, 0x02, 10},
+ {31, 0x02, 10},
+ {41, 0x02, 10},
+ {56, 0x03, 10},
+ {3, 0x02, 13},
+ {6, 0x02, 13},
+ {10, 0x02, 13},
+ {15, 0x02, 13},
+ {24, 0x02, 13},
+ {31, 0x02, 13},
+ {41, 0x02, 13},
+ {56, 0x03, 13},
+ },
+ /* 255 */
+ {
+ {3, 0x02, 22},
+ {6, 0x02, 22},
+ {10, 0x02, 22},
+ {15, 0x02, 22},
+ {24, 0x02, 22},
+ {31, 0x02, 22},
+ {41, 0x02, 22},
+ {56, 0x03, 22},
+ {0, 0x04, 0},
+ {0, 0x04, 0},
+ {0, 0x04, 0},
+ {0, 0x04, 0},
+ {0, 0x04, 0},
+ {0, 0x04, 0},
+ {0, 0x04, 0},
+ {0, 0x04, 0},
+ },
+};
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_helper.h"
+
+#include <assert.h>
+#include <string.h>
+
+#include "nghttp2_net.h"
+
+void nghttp2_put_uint16be(uint8_t *buf, uint16_t n) {
+ uint16_t x = htons(n);
+ memcpy(buf, &x, sizeof(uint16_t));
+}
+
+void nghttp2_put_uint32be(uint8_t *buf, uint32_t n) {
+ uint32_t x = htonl(n);
+ memcpy(buf, &x, sizeof(uint32_t));
+}
+
+uint16_t nghttp2_get_uint16(const uint8_t *data) {
+ uint16_t n;
+ memcpy(&n, data, sizeof(uint16_t));
+ return ntohs(n);
+}
+
+uint32_t nghttp2_get_uint32(const uint8_t *data) {
+ uint32_t n;
+ memcpy(&n, data, sizeof(uint32_t));
+ return ntohl(n);
+}
+
+/* Generated by gendowncasetbl.py */
+static const uint8_t DOWNCASE_TBL[] = {
+ 0 /* NUL */, 1 /* SOH */, 2 /* STX */, 3 /* ETX */,
+ 4 /* EOT */, 5 /* ENQ */, 6 /* ACK */, 7 /* BEL */,
+ 8 /* BS */, 9 /* HT */, 10 /* LF */, 11 /* VT */,
+ 12 /* FF */, 13 /* CR */, 14 /* SO */, 15 /* SI */,
+ 16 /* DLE */, 17 /* DC1 */, 18 /* DC2 */, 19 /* DC3 */,
+ 20 /* DC4 */, 21 /* NAK */, 22 /* SYN */, 23 /* ETB */,
+ 24 /* CAN */, 25 /* EM */, 26 /* SUB */, 27 /* ESC */,
+ 28 /* FS */, 29 /* GS */, 30 /* RS */, 31 /* US */,
+ 32 /* SPC */, 33 /* ! */, 34 /* " */, 35 /* # */,
+ 36 /* $ */, 37 /* % */, 38 /* & */, 39 /* ' */,
+ 40 /* ( */, 41 /* ) */, 42 /* * */, 43 /* + */,
+ 44 /* , */, 45 /* - */, 46 /* . */, 47 /* / */,
+ 48 /* 0 */, 49 /* 1 */, 50 /* 2 */, 51 /* 3 */,
+ 52 /* 4 */, 53 /* 5 */, 54 /* 6 */, 55 /* 7 */,
+ 56 /* 8 */, 57 /* 9 */, 58 /* : */, 59 /* ; */,
+ 60 /* < */, 61 /* = */, 62 /* > */, 63 /* ? */,
+ 64 /* @ */, 97 /* A */, 98 /* B */, 99 /* C */,
+ 100 /* D */, 101 /* E */, 102 /* F */, 103 /* G */,
+ 104 /* H */, 105 /* I */, 106 /* J */, 107 /* K */,
+ 108 /* L */, 109 /* M */, 110 /* N */, 111 /* O */,
+ 112 /* P */, 113 /* Q */, 114 /* R */, 115 /* S */,
+ 116 /* T */, 117 /* U */, 118 /* V */, 119 /* W */,
+ 120 /* X */, 121 /* Y */, 122 /* Z */, 91 /* [ */,
+ 92 /* \ */, 93 /* ] */, 94 /* ^ */, 95 /* _ */,
+ 96 /* ` */, 97 /* a */, 98 /* b */, 99 /* c */,
+ 100 /* d */, 101 /* e */, 102 /* f */, 103 /* g */,
+ 104 /* h */, 105 /* i */, 106 /* j */, 107 /* k */,
+ 108 /* l */, 109 /* m */, 110 /* n */, 111 /* o */,
+ 112 /* p */, 113 /* q */, 114 /* r */, 115 /* s */,
+ 116 /* t */, 117 /* u */, 118 /* v */, 119 /* w */,
+ 120 /* x */, 121 /* y */, 122 /* z */, 123 /* { */,
+ 124 /* | */, 125 /* } */, 126 /* ~ */, 127 /* DEL */,
+ 128 /* 0x80 */, 129 /* 0x81 */, 130 /* 0x82 */, 131 /* 0x83 */,
+ 132 /* 0x84 */, 133 /* 0x85 */, 134 /* 0x86 */, 135 /* 0x87 */,
+ 136 /* 0x88 */, 137 /* 0x89 */, 138 /* 0x8a */, 139 /* 0x8b */,
+ 140 /* 0x8c */, 141 /* 0x8d */, 142 /* 0x8e */, 143 /* 0x8f */,
+ 144 /* 0x90 */, 145 /* 0x91 */, 146 /* 0x92 */, 147 /* 0x93 */,
+ 148 /* 0x94 */, 149 /* 0x95 */, 150 /* 0x96 */, 151 /* 0x97 */,
+ 152 /* 0x98 */, 153 /* 0x99 */, 154 /* 0x9a */, 155 /* 0x9b */,
+ 156 /* 0x9c */, 157 /* 0x9d */, 158 /* 0x9e */, 159 /* 0x9f */,
+ 160 /* 0xa0 */, 161 /* 0xa1 */, 162 /* 0xa2 */, 163 /* 0xa3 */,
+ 164 /* 0xa4 */, 165 /* 0xa5 */, 166 /* 0xa6 */, 167 /* 0xa7 */,
+ 168 /* 0xa8 */, 169 /* 0xa9 */, 170 /* 0xaa */, 171 /* 0xab */,
+ 172 /* 0xac */, 173 /* 0xad */, 174 /* 0xae */, 175 /* 0xaf */,
+ 176 /* 0xb0 */, 177 /* 0xb1 */, 178 /* 0xb2 */, 179 /* 0xb3 */,
+ 180 /* 0xb4 */, 181 /* 0xb5 */, 182 /* 0xb6 */, 183 /* 0xb7 */,
+ 184 /* 0xb8 */, 185 /* 0xb9 */, 186 /* 0xba */, 187 /* 0xbb */,
+ 188 /* 0xbc */, 189 /* 0xbd */, 190 /* 0xbe */, 191 /* 0xbf */,
+ 192 /* 0xc0 */, 193 /* 0xc1 */, 194 /* 0xc2 */, 195 /* 0xc3 */,
+ 196 /* 0xc4 */, 197 /* 0xc5 */, 198 /* 0xc6 */, 199 /* 0xc7 */,
+ 200 /* 0xc8 */, 201 /* 0xc9 */, 202 /* 0xca */, 203 /* 0xcb */,
+ 204 /* 0xcc */, 205 /* 0xcd */, 206 /* 0xce */, 207 /* 0xcf */,
+ 208 /* 0xd0 */, 209 /* 0xd1 */, 210 /* 0xd2 */, 211 /* 0xd3 */,
+ 212 /* 0xd4 */, 213 /* 0xd5 */, 214 /* 0xd6 */, 215 /* 0xd7 */,
+ 216 /* 0xd8 */, 217 /* 0xd9 */, 218 /* 0xda */, 219 /* 0xdb */,
+ 220 /* 0xdc */, 221 /* 0xdd */, 222 /* 0xde */, 223 /* 0xdf */,
+ 224 /* 0xe0 */, 225 /* 0xe1 */, 226 /* 0xe2 */, 227 /* 0xe3 */,
+ 228 /* 0xe4 */, 229 /* 0xe5 */, 230 /* 0xe6 */, 231 /* 0xe7 */,
+ 232 /* 0xe8 */, 233 /* 0xe9 */, 234 /* 0xea */, 235 /* 0xeb */,
+ 236 /* 0xec */, 237 /* 0xed */, 238 /* 0xee */, 239 /* 0xef */,
+ 240 /* 0xf0 */, 241 /* 0xf1 */, 242 /* 0xf2 */, 243 /* 0xf3 */,
+ 244 /* 0xf4 */, 245 /* 0xf5 */, 246 /* 0xf6 */, 247 /* 0xf7 */,
+ 248 /* 0xf8 */, 249 /* 0xf9 */, 250 /* 0xfa */, 251 /* 0xfb */,
+ 252 /* 0xfc */, 253 /* 0xfd */, 254 /* 0xfe */, 255 /* 0xff */,
+};
+
+void nghttp2_downcase(uint8_t *s, size_t len) {
+ size_t i;
+ for (i = 0; i < len; ++i) {
+ s[i] = DOWNCASE_TBL[s[i]];
+ }
+}
+
+/*
+ * local_window_size
+ * ^ *
+ * | * recv_window_size
+ * | * * ^
+ * | * * |
+ * 0+++++++++
+ * | * * \
+ * | * * | This rage is hidden in flow control. But it must be
+ * v * * / kept in order to restore it when window size is enlarged.
+ * recv_reduction
+ * (+ for negative direction)
+ *
+ * recv_window_size could be negative if we decrease
+ * local_window_size more than recv_window_size:
+ *
+ * local_window_size
+ * ^ *
+ * | *
+ * | *
+ * 0++++++++
+ * | * ^ recv_window_size (negative)
+ * | * |
+ * v * *
+ * recv_reduction
+ */
+int nghttp2_adjust_local_window_size(int32_t *local_window_size_ptr,
+ int32_t *recv_window_size_ptr,
+ int32_t *recv_reduction_ptr,
+ int32_t *delta_ptr) {
+ if (*delta_ptr > 0) {
+ int32_t recv_reduction_delta;
+ int32_t delta;
+ int32_t new_recv_window_size =
+ nghttp2_max(0, *recv_window_size_ptr) - *delta_ptr;
+
+ if (new_recv_window_size >= 0) {
+ *recv_window_size_ptr = new_recv_window_size;
+ return 0;
+ }
+
+ delta = -new_recv_window_size;
+
+ /* The delta size is strictly more than received bytes. Increase
+ local_window_size by that difference |delta|. */
+ if (*local_window_size_ptr > NGHTTP2_MAX_WINDOW_SIZE - delta) {
+ return NGHTTP2_ERR_FLOW_CONTROL;
+ }
+ *local_window_size_ptr += delta;
+ /* If there is recv_reduction due to earlier window_size
+ reduction, we have to adjust it too. */
+ recv_reduction_delta = nghttp2_min(*recv_reduction_ptr, delta);
+ *recv_reduction_ptr -= recv_reduction_delta;
+ if (*recv_window_size_ptr < 0) {
+ *recv_window_size_ptr += recv_reduction_delta;
+ } else {
+ /* If *recv_window_size_ptr > 0, then those bytes are going to
+ be returned to the remote peer (by WINDOW_UPDATE with the
+ adjusted *delta_ptr), so it is effectively 0 now. We set to
+ *recv_reduction_delta, because caller does not take into
+ account it in *delta_ptr. */
+ *recv_window_size_ptr = recv_reduction_delta;
+ }
+ /* recv_reduction_delta must be paied from *delta_ptr, since it
+ was added in window size reduction (see below). */
+ *delta_ptr -= recv_reduction_delta;
+
+ return 0;
+ }
+
+ if (*local_window_size_ptr + *delta_ptr < 0 ||
+ *recv_window_size_ptr < INT32_MIN - *delta_ptr ||
+ *recv_reduction_ptr > INT32_MAX + *delta_ptr) {
+ return NGHTTP2_ERR_FLOW_CONTROL;
+ }
+ /* Decreasing local window size. Note that we achieve this without
+ noticing to the remote peer. To do this, we cut
+ recv_window_size by -delta. This means that we don't send
+ WINDOW_UPDATE for -delta bytes. */
+ *local_window_size_ptr += *delta_ptr;
+ *recv_window_size_ptr += *delta_ptr;
+ *recv_reduction_ptr -= *delta_ptr;
+ *delta_ptr = 0;
+
+ return 0;
+}
+
+int nghttp2_increase_local_window_size(int32_t *local_window_size_ptr,
+ int32_t *recv_window_size_ptr,
+ int32_t *recv_reduction_ptr,
+ int32_t *delta_ptr) {
+ int32_t recv_reduction_delta;
+ int32_t delta;
+
+ delta = *delta_ptr;
+
+ assert(delta >= 0);
+
+ /* The delta size is strictly more than received bytes. Increase
+ local_window_size by that difference |delta|. */
+ if (*local_window_size_ptr > NGHTTP2_MAX_WINDOW_SIZE - delta) {
+ return NGHTTP2_ERR_FLOW_CONTROL;
+ }
+
+ *local_window_size_ptr += delta;
+ /* If there is recv_reduction due to earlier window_size
+ reduction, we have to adjust it too. */
+ recv_reduction_delta = nghttp2_min(*recv_reduction_ptr, delta);
+ *recv_reduction_ptr -= recv_reduction_delta;
+
+ *recv_window_size_ptr += recv_reduction_delta;
+
+ /* recv_reduction_delta must be paied from *delta_ptr, since it was
+ added in window size reduction (see below). */
+ *delta_ptr -= recv_reduction_delta;
+
+ return 0;
+}
+
+int nghttp2_should_send_window_update(int32_t local_window_size,
+ int32_t recv_window_size) {
+ return recv_window_size > 0 && recv_window_size >= local_window_size / 2;
+}
+
+const char *nghttp2_strerror(int error_code) {
+ switch (error_code) {
+ case 0:
+ return "Success";
+ case NGHTTP2_ERR_INVALID_ARGUMENT:
+ return "Invalid argument";
+ case NGHTTP2_ERR_BUFFER_ERROR:
+ return "Out of buffer space";
+ case NGHTTP2_ERR_UNSUPPORTED_VERSION:
+ return "Unsupported SPDY version";
+ case NGHTTP2_ERR_WOULDBLOCK:
+ return "Operation would block";
+ case NGHTTP2_ERR_PROTO:
+ return "Protocol error";
+ case NGHTTP2_ERR_INVALID_FRAME:
+ return "Invalid frame octets";
+ case NGHTTP2_ERR_EOF:
+ return "EOF";
+ case NGHTTP2_ERR_DEFERRED:
+ return "Data transfer deferred";
+ case NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE:
+ return "No more Stream ID available";
+ case NGHTTP2_ERR_STREAM_CLOSED:
+ return "Stream was already closed or invalid";
+ case NGHTTP2_ERR_STREAM_CLOSING:
+ return "Stream is closing";
+ case NGHTTP2_ERR_STREAM_SHUT_WR:
+ return "The transmission is not allowed for this stream";
+ case NGHTTP2_ERR_INVALID_STREAM_ID:
+ return "Stream ID is invalid";
+ case NGHTTP2_ERR_INVALID_STREAM_STATE:
+ return "Invalid stream state";
+ case NGHTTP2_ERR_DEFERRED_DATA_EXIST:
+ return "Another DATA frame has already been deferred";
+ case NGHTTP2_ERR_START_STREAM_NOT_ALLOWED:
+ return "request HEADERS is not allowed";
+ case NGHTTP2_ERR_GOAWAY_ALREADY_SENT:
+ return "GOAWAY has already been sent";
+ case NGHTTP2_ERR_INVALID_HEADER_BLOCK:
+ return "Invalid header block";
+ case NGHTTP2_ERR_INVALID_STATE:
+ return "Invalid state";
+ case NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE:
+ return "The user callback function failed due to the temporal error";
+ case NGHTTP2_ERR_FRAME_SIZE_ERROR:
+ return "The length of the frame is invalid";
+ case NGHTTP2_ERR_HEADER_COMP:
+ return "Header compression/decompression error";
+ case NGHTTP2_ERR_FLOW_CONTROL:
+ return "Flow control error";
+ case NGHTTP2_ERR_INSUFF_BUFSIZE:
+ return "Insufficient buffer size given to function";
+ case NGHTTP2_ERR_PAUSE:
+ return "Callback was paused by the application";
+ case NGHTTP2_ERR_TOO_MANY_INFLIGHT_SETTINGS:
+ return "Too many inflight SETTINGS";
+ case NGHTTP2_ERR_PUSH_DISABLED:
+ return "Server push is disabled by peer";
+ case NGHTTP2_ERR_DATA_EXIST:
+ return "DATA or HEADERS frame has already been submitted for the stream";
+ case NGHTTP2_ERR_SESSION_CLOSING:
+ return "The current session is closing";
+ case NGHTTP2_ERR_HTTP_HEADER:
+ return "Invalid HTTP header field was received";
+ case NGHTTP2_ERR_HTTP_MESSAGING:
+ return "Violation in HTTP messaging rule";
+ case NGHTTP2_ERR_REFUSED_STREAM:
+ return "Stream was refused";
+ case NGHTTP2_ERR_INTERNAL:
+ return "Internal error";
+ case NGHTTP2_ERR_CANCEL:
+ return "Cancel";
+ case NGHTTP2_ERR_NOMEM:
+ return "Out of memory";
+ case NGHTTP2_ERR_CALLBACK_FAILURE:
+ return "The user callback function failed";
+ case NGHTTP2_ERR_BAD_CLIENT_MAGIC:
+ return "Received bad client magic byte string";
+ case NGHTTP2_ERR_FLOODED:
+ return "Flooding was detected in this HTTP/2 session, and it must be "
+ "closed";
+ default:
+ return "Unknown error code";
+ }
+}
+
+/* Generated by gennmchartbl.py */
+static int VALID_HD_NAME_CHARS[] = {
+ 0 /* NUL */, 0 /* SOH */, 0 /* STX */, 0 /* ETX */, 0 /* EOT */,
+ 0 /* ENQ */, 0 /* ACK */, 0 /* BEL */, 0 /* BS */, 0 /* HT */,
+ 0 /* LF */, 0 /* VT */, 0 /* FF */, 0 /* CR */, 0 /* SO */,
+ 0 /* SI */, 0 /* DLE */, 0 /* DC1 */, 0 /* DC2 */, 0 /* DC3 */,
+ 0 /* DC4 */, 0 /* NAK */, 0 /* SYN */, 0 /* ETB */, 0 /* CAN */,
+ 0 /* EM */, 0 /* SUB */, 0 /* ESC */, 0 /* FS */, 0 /* GS */,
+ 0 /* RS */, 0 /* US */, 0 /* SPC */, 1 /* ! */, 0 /* " */,
+ 1 /* # */, 1 /* $ */, 1 /* % */, 1 /* & */, 1 /* ' */,
+ 0 /* ( */, 0 /* ) */, 1 /* * */, 1 /* + */, 0 /* , */,
+ 1 /* - */, 1 /* . */, 0 /* / */, 1 /* 0 */, 1 /* 1 */,
+ 1 /* 2 */, 1 /* 3 */, 1 /* 4 */, 1 /* 5 */, 1 /* 6 */,
+ 1 /* 7 */, 1 /* 8 */, 1 /* 9 */, 0 /* : */, 0 /* ; */,
+ 0 /* < */, 0 /* = */, 0 /* > */, 0 /* ? */, 0 /* @ */,
+ 0 /* A */, 0 /* B */, 0 /* C */, 0 /* D */, 0 /* E */,
+ 0 /* F */, 0 /* G */, 0 /* H */, 0 /* I */, 0 /* J */,
+ 0 /* K */, 0 /* L */, 0 /* M */, 0 /* N */, 0 /* O */,
+ 0 /* P */, 0 /* Q */, 0 /* R */, 0 /* S */, 0 /* T */,
+ 0 /* U */, 0 /* V */, 0 /* W */, 0 /* X */, 0 /* Y */,
+ 0 /* Z */, 0 /* [ */, 0 /* \ */, 0 /* ] */, 1 /* ^ */,
+ 1 /* _ */, 1 /* ` */, 1 /* a */, 1 /* b */, 1 /* c */,
+ 1 /* d */, 1 /* e */, 1 /* f */, 1 /* g */, 1 /* h */,
+ 1 /* i */, 1 /* j */, 1 /* k */, 1 /* l */, 1 /* m */,
+ 1 /* n */, 1 /* o */, 1 /* p */, 1 /* q */, 1 /* r */,
+ 1 /* s */, 1 /* t */, 1 /* u */, 1 /* v */, 1 /* w */,
+ 1 /* x */, 1 /* y */, 1 /* z */, 0 /* { */, 1 /* | */,
+ 0 /* } */, 1 /* ~ */, 0 /* DEL */, 0 /* 0x80 */, 0 /* 0x81 */,
+ 0 /* 0x82 */, 0 /* 0x83 */, 0 /* 0x84 */, 0 /* 0x85 */, 0 /* 0x86 */,
+ 0 /* 0x87 */, 0 /* 0x88 */, 0 /* 0x89 */, 0 /* 0x8a */, 0 /* 0x8b */,
+ 0 /* 0x8c */, 0 /* 0x8d */, 0 /* 0x8e */, 0 /* 0x8f */, 0 /* 0x90 */,
+ 0 /* 0x91 */, 0 /* 0x92 */, 0 /* 0x93 */, 0 /* 0x94 */, 0 /* 0x95 */,
+ 0 /* 0x96 */, 0 /* 0x97 */, 0 /* 0x98 */, 0 /* 0x99 */, 0 /* 0x9a */,
+ 0 /* 0x9b */, 0 /* 0x9c */, 0 /* 0x9d */, 0 /* 0x9e */, 0 /* 0x9f */,
+ 0 /* 0xa0 */, 0 /* 0xa1 */, 0 /* 0xa2 */, 0 /* 0xa3 */, 0 /* 0xa4 */,
+ 0 /* 0xa5 */, 0 /* 0xa6 */, 0 /* 0xa7 */, 0 /* 0xa8 */, 0 /* 0xa9 */,
+ 0 /* 0xaa */, 0 /* 0xab */, 0 /* 0xac */, 0 /* 0xad */, 0 /* 0xae */,
+ 0 /* 0xaf */, 0 /* 0xb0 */, 0 /* 0xb1 */, 0 /* 0xb2 */, 0 /* 0xb3 */,
+ 0 /* 0xb4 */, 0 /* 0xb5 */, 0 /* 0xb6 */, 0 /* 0xb7 */, 0 /* 0xb8 */,
+ 0 /* 0xb9 */, 0 /* 0xba */, 0 /* 0xbb */, 0 /* 0xbc */, 0 /* 0xbd */,
+ 0 /* 0xbe */, 0 /* 0xbf */, 0 /* 0xc0 */, 0 /* 0xc1 */, 0 /* 0xc2 */,
+ 0 /* 0xc3 */, 0 /* 0xc4 */, 0 /* 0xc5 */, 0 /* 0xc6 */, 0 /* 0xc7 */,
+ 0 /* 0xc8 */, 0 /* 0xc9 */, 0 /* 0xca */, 0 /* 0xcb */, 0 /* 0xcc */,
+ 0 /* 0xcd */, 0 /* 0xce */, 0 /* 0xcf */, 0 /* 0xd0 */, 0 /* 0xd1 */,
+ 0 /* 0xd2 */, 0 /* 0xd3 */, 0 /* 0xd4 */, 0 /* 0xd5 */, 0 /* 0xd6 */,
+ 0 /* 0xd7 */, 0 /* 0xd8 */, 0 /* 0xd9 */, 0 /* 0xda */, 0 /* 0xdb */,
+ 0 /* 0xdc */, 0 /* 0xdd */, 0 /* 0xde */, 0 /* 0xdf */, 0 /* 0xe0 */,
+ 0 /* 0xe1 */, 0 /* 0xe2 */, 0 /* 0xe3 */, 0 /* 0xe4 */, 0 /* 0xe5 */,
+ 0 /* 0xe6 */, 0 /* 0xe7 */, 0 /* 0xe8 */, 0 /* 0xe9 */, 0 /* 0xea */,
+ 0 /* 0xeb */, 0 /* 0xec */, 0 /* 0xed */, 0 /* 0xee */, 0 /* 0xef */,
+ 0 /* 0xf0 */, 0 /* 0xf1 */, 0 /* 0xf2 */, 0 /* 0xf3 */, 0 /* 0xf4 */,
+ 0 /* 0xf5 */, 0 /* 0xf6 */, 0 /* 0xf7 */, 0 /* 0xf8 */, 0 /* 0xf9 */,
+ 0 /* 0xfa */, 0 /* 0xfb */, 0 /* 0xfc */, 0 /* 0xfd */, 0 /* 0xfe */,
+ 0 /* 0xff */
+};
+
+int nghttp2_check_header_name(const uint8_t *name, size_t len) {
+ const uint8_t *last;
+ if (len == 0) {
+ return 0;
+ }
+ if (*name == ':') {
+ if (len == 1) {
+ return 0;
+ }
+ ++name;
+ --len;
+ }
+ for (last = name + len; name != last; ++name) {
+ if (!VALID_HD_NAME_CHARS[*name]) {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+/* Generated by genvchartbl.py */
+static int VALID_HD_VALUE_CHARS[] = {
+ 0 /* NUL */, 0 /* SOH */, 0 /* STX */, 0 /* ETX */, 0 /* EOT */,
+ 0 /* ENQ */, 0 /* ACK */, 0 /* BEL */, 0 /* BS */, 1 /* HT */,
+ 0 /* LF */, 0 /* VT */, 0 /* FF */, 0 /* CR */, 0 /* SO */,
+ 0 /* SI */, 0 /* DLE */, 0 /* DC1 */, 0 /* DC2 */, 0 /* DC3 */,
+ 0 /* DC4 */, 0 /* NAK */, 0 /* SYN */, 0 /* ETB */, 0 /* CAN */,
+ 0 /* EM */, 0 /* SUB */, 0 /* ESC */, 0 /* FS */, 0 /* GS */,
+ 0 /* RS */, 0 /* US */, 1 /* SPC */, 1 /* ! */, 1 /* " */,
+ 1 /* # */, 1 /* $ */, 1 /* % */, 1 /* & */, 1 /* ' */,
+ 1 /* ( */, 1 /* ) */, 1 /* * */, 1 /* + */, 1 /* , */,
+ 1 /* - */, 1 /* . */, 1 /* / */, 1 /* 0 */, 1 /* 1 */,
+ 1 /* 2 */, 1 /* 3 */, 1 /* 4 */, 1 /* 5 */, 1 /* 6 */,
+ 1 /* 7 */, 1 /* 8 */, 1 /* 9 */, 1 /* : */, 1 /* ; */,
+ 1 /* < */, 1 /* = */, 1 /* > */, 1 /* ? */, 1 /* @ */,
+ 1 /* A */, 1 /* B */, 1 /* C */, 1 /* D */, 1 /* E */,
+ 1 /* F */, 1 /* G */, 1 /* H */, 1 /* I */, 1 /* J */,
+ 1 /* K */, 1 /* L */, 1 /* M */, 1 /* N */, 1 /* O */,
+ 1 /* P */, 1 /* Q */, 1 /* R */, 1 /* S */, 1 /* T */,
+ 1 /* U */, 1 /* V */, 1 /* W */, 1 /* X */, 1 /* Y */,
+ 1 /* Z */, 1 /* [ */, 1 /* \ */, 1 /* ] */, 1 /* ^ */,
+ 1 /* _ */, 1 /* ` */, 1 /* a */, 1 /* b */, 1 /* c */,
+ 1 /* d */, 1 /* e */, 1 /* f */, 1 /* g */, 1 /* h */,
+ 1 /* i */, 1 /* j */, 1 /* k */, 1 /* l */, 1 /* m */,
+ 1 /* n */, 1 /* o */, 1 /* p */, 1 /* q */, 1 /* r */,
+ 1 /* s */, 1 /* t */, 1 /* u */, 1 /* v */, 1 /* w */,
+ 1 /* x */, 1 /* y */, 1 /* z */, 1 /* { */, 1 /* | */,
+ 1 /* } */, 1 /* ~ */, 0 /* DEL */, 1 /* 0x80 */, 1 /* 0x81 */,
+ 1 /* 0x82 */, 1 /* 0x83 */, 1 /* 0x84 */, 1 /* 0x85 */, 1 /* 0x86 */,
+ 1 /* 0x87 */, 1 /* 0x88 */, 1 /* 0x89 */, 1 /* 0x8a */, 1 /* 0x8b */,
+ 1 /* 0x8c */, 1 /* 0x8d */, 1 /* 0x8e */, 1 /* 0x8f */, 1 /* 0x90 */,
+ 1 /* 0x91 */, 1 /* 0x92 */, 1 /* 0x93 */, 1 /* 0x94 */, 1 /* 0x95 */,
+ 1 /* 0x96 */, 1 /* 0x97 */, 1 /* 0x98 */, 1 /* 0x99 */, 1 /* 0x9a */,
+ 1 /* 0x9b */, 1 /* 0x9c */, 1 /* 0x9d */, 1 /* 0x9e */, 1 /* 0x9f */,
+ 1 /* 0xa0 */, 1 /* 0xa1 */, 1 /* 0xa2 */, 1 /* 0xa3 */, 1 /* 0xa4 */,
+ 1 /* 0xa5 */, 1 /* 0xa6 */, 1 /* 0xa7 */, 1 /* 0xa8 */, 1 /* 0xa9 */,
+ 1 /* 0xaa */, 1 /* 0xab */, 1 /* 0xac */, 1 /* 0xad */, 1 /* 0xae */,
+ 1 /* 0xaf */, 1 /* 0xb0 */, 1 /* 0xb1 */, 1 /* 0xb2 */, 1 /* 0xb3 */,
+ 1 /* 0xb4 */, 1 /* 0xb5 */, 1 /* 0xb6 */, 1 /* 0xb7 */, 1 /* 0xb8 */,
+ 1 /* 0xb9 */, 1 /* 0xba */, 1 /* 0xbb */, 1 /* 0xbc */, 1 /* 0xbd */,
+ 1 /* 0xbe */, 1 /* 0xbf */, 1 /* 0xc0 */, 1 /* 0xc1 */, 1 /* 0xc2 */,
+ 1 /* 0xc3 */, 1 /* 0xc4 */, 1 /* 0xc5 */, 1 /* 0xc6 */, 1 /* 0xc7 */,
+ 1 /* 0xc8 */, 1 /* 0xc9 */, 1 /* 0xca */, 1 /* 0xcb */, 1 /* 0xcc */,
+ 1 /* 0xcd */, 1 /* 0xce */, 1 /* 0xcf */, 1 /* 0xd0 */, 1 /* 0xd1 */,
+ 1 /* 0xd2 */, 1 /* 0xd3 */, 1 /* 0xd4 */, 1 /* 0xd5 */, 1 /* 0xd6 */,
+ 1 /* 0xd7 */, 1 /* 0xd8 */, 1 /* 0xd9 */, 1 /* 0xda */, 1 /* 0xdb */,
+ 1 /* 0xdc */, 1 /* 0xdd */, 1 /* 0xde */, 1 /* 0xdf */, 1 /* 0xe0 */,
+ 1 /* 0xe1 */, 1 /* 0xe2 */, 1 /* 0xe3 */, 1 /* 0xe4 */, 1 /* 0xe5 */,
+ 1 /* 0xe6 */, 1 /* 0xe7 */, 1 /* 0xe8 */, 1 /* 0xe9 */, 1 /* 0xea */,
+ 1 /* 0xeb */, 1 /* 0xec */, 1 /* 0xed */, 1 /* 0xee */, 1 /* 0xef */,
+ 1 /* 0xf0 */, 1 /* 0xf1 */, 1 /* 0xf2 */, 1 /* 0xf3 */, 1 /* 0xf4 */,
+ 1 /* 0xf5 */, 1 /* 0xf6 */, 1 /* 0xf7 */, 1 /* 0xf8 */, 1 /* 0xf9 */,
+ 1 /* 0xfa */, 1 /* 0xfb */, 1 /* 0xfc */, 1 /* 0xfd */, 1 /* 0xfe */,
+ 1 /* 0xff */
+};
+
+int nghttp2_check_header_value(const uint8_t *value, size_t len) {
+ const uint8_t *last;
+ for (last = value + len; value != last; ++value) {
+ if (!VALID_HD_VALUE_CHARS[*value]) {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+uint8_t *nghttp2_cpymem(uint8_t *dest, const void *src, size_t len) {
+ memcpy(dest, src, len);
+
+ return dest + len;
+}
+
+const char *nghttp2_http2_strerror(uint32_t error_code) {
+ switch (error_code) {
+ case NGHTTP2_NO_ERROR:
+ return "NO_ERROR";
+ case NGHTTP2_PROTOCOL_ERROR:
+ return "PROTOCOL_ERROR";
+ case NGHTTP2_INTERNAL_ERROR:
+ return "INTERNAL_ERROR";
+ case NGHTTP2_FLOW_CONTROL_ERROR:
+ return "FLOW_CONTROL_ERROR";
+ case NGHTTP2_SETTINGS_TIMEOUT:
+ return "SETTINGS_TIMEOUT";
+ case NGHTTP2_STREAM_CLOSED:
+ return "STREAM_CLOSED";
+ case NGHTTP2_FRAME_SIZE_ERROR:
+ return "FRAME_SIZE_ERROR";
+ case NGHTTP2_REFUSED_STREAM:
+ return "REFUSED_STREAM";
+ case NGHTTP2_CANCEL:
+ return "CANCEL";
+ case NGHTTP2_COMPRESSION_ERROR:
+ return "COMPRESSION_ERROR";
+ case NGHTTP2_CONNECT_ERROR:
+ return "CONNECT_ERROR";
+ case NGHTTP2_ENHANCE_YOUR_CALM:
+ return "ENHANCE_YOUR_CALM";
+ case NGHTTP2_INADEQUATE_SECURITY:
+ return "INADEQUATE_SECURITY";
+ case NGHTTP2_HTTP_1_1_REQUIRED:
+ return "HTTP_1_1_REQUIRED";
+ default:
+ return "unknown";
+ }
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2015 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_http.h"
+
+#include <string.h>
+#include <assert.h>
+#include <stdio.h>
+
+#include "nghttp2_hd.h"
+#include "nghttp2_helper.h"
+
+static uint8_t downcase(uint8_t c) {
+ return 'A' <= c && c <= 'Z' ? (uint8_t)(c - 'A' + 'a') : c;
+}
+
+static int memieq(const void *a, const void *b, size_t n) {
+ size_t i;
+ const uint8_t *aa = a, *bb = b;
+
+ for (i = 0; i < n; ++i) {
+ if (downcase(aa[i]) != downcase(bb[i])) {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+#define lstrieq(A, B, N) ((sizeof((A)) - 1) == (N) && memieq((A), (B), (N)))
+
+static int64_t parse_uint(const uint8_t *s, size_t len) {
+ int64_t n = 0;
+ size_t i;
+ if (len == 0) {
+ return -1;
+ }
+ for (i = 0; i < len; ++i) {
+ if ('0' <= s[i] && s[i] <= '9') {
+ if (n > INT64_MAX / 10) {
+ return -1;
+ }
+ n *= 10;
+ if (n > INT64_MAX - (s[i] - '0')) {
+ return -1;
+ }
+ n += s[i] - '0';
+ continue;
+ }
+ return -1;
+ }
+ return n;
+}
+
+static int lws(const uint8_t *s, size_t n) {
+ size_t i;
+ for (i = 0; i < n; ++i) {
+ if (s[i] != ' ' && s[i] != '\t') {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+static int check_pseudo_header(nghttp2_stream *stream, const nghttp2_hd_nv *nv,
+ int flag) {
+ if (stream->http_flags & flag) {
+ return 0;
+ }
+ if (lws(nv->value->base, nv->value->len)) {
+ return 0;
+ }
+ stream->http_flags = (uint16_t)(stream->http_flags | flag);
+ return 1;
+}
+
+static int expect_response_body(nghttp2_stream *stream) {
+ return (stream->http_flags & NGHTTP2_HTTP_FLAG_METH_HEAD) == 0 &&
+ stream->status_code / 100 != 1 && stream->status_code != 304 &&
+ stream->status_code != 204;
+}
+
+/* For "http" or "https" URIs, OPTIONS request may have "*" in :path
+ header field to represent system-wide OPTIONS request. Otherwise,
+ :path header field value must start with "/". This function must
+ be called after ":method" header field was received. This function
+ returns nonzero if path is valid.*/
+static int check_path(nghttp2_stream *stream) {
+ return (stream->http_flags & NGHTTP2_HTTP_FLAG_SCHEME_HTTP) == 0 ||
+ ((stream->http_flags & NGHTTP2_HTTP_FLAG_PATH_REGULAR) ||
+ ((stream->http_flags & NGHTTP2_HTTP_FLAG_METH_OPTIONS) &&
+ (stream->http_flags & NGHTTP2_HTTP_FLAG_PATH_ASTERISK)));
+}
+
+static int http_request_on_header(nghttp2_stream *stream, nghttp2_hd_nv *nv,
+ int trailer) {
+ if (nv->name->base[0] == ':') {
+ if (trailer ||
+ (stream->http_flags & NGHTTP2_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ }
+
+ switch (nv->token) {
+ case NGHTTP2_TOKEN__AUTHORITY:
+ if (!check_pseudo_header(stream, nv, NGHTTP2_HTTP_FLAG__AUTHORITY)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ case NGHTTP2_TOKEN__METHOD:
+ if (!check_pseudo_header(stream, nv, NGHTTP2_HTTP_FLAG__METHOD)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ switch (nv->value->len) {
+ case 4:
+ if (lstreq("HEAD", nv->value->base, nv->value->len)) {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_METH_HEAD;
+ }
+ break;
+ case 7:
+ switch (nv->value->base[6]) {
+ case 'T':
+ if (lstreq("CONNECT", nv->value->base, nv->value->len)) {
+ if (stream->stream_id % 2 == 0) {
+ /* we won't allow CONNECT for push */
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_METH_CONNECT;
+ if (stream->http_flags &
+ (NGHTTP2_HTTP_FLAG__PATH | NGHTTP2_HTTP_FLAG__SCHEME)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ }
+ break;
+ case 'S':
+ if (lstreq("OPTIONS", nv->value->base, nv->value->len)) {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_METH_OPTIONS;
+ }
+ break;
+ }
+ break;
+ }
+ break;
+ case NGHTTP2_TOKEN__PATH:
+ if (stream->http_flags & NGHTTP2_HTTP_FLAG_METH_CONNECT) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ if (!check_pseudo_header(stream, nv, NGHTTP2_HTTP_FLAG__PATH)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ if (nv->value->base[0] == '/') {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_PATH_REGULAR;
+ } else if (nv->value->len == 1 && nv->value->base[0] == '*') {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_PATH_ASTERISK;
+ }
+ break;
+ case NGHTTP2_TOKEN__SCHEME:
+ if (stream->http_flags & NGHTTP2_HTTP_FLAG_METH_CONNECT) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ if (!check_pseudo_header(stream, nv, NGHTTP2_HTTP_FLAG__SCHEME)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ if ((nv->value->len == 4 && memieq("http", nv->value->base, 4)) ||
+ (nv->value->len == 5 && memieq("https", nv->value->base, 5))) {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_SCHEME_HTTP;
+ }
+ break;
+ case NGHTTP2_TOKEN_HOST:
+ if (!check_pseudo_header(stream, nv, NGHTTP2_HTTP_FLAG_HOST)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ case NGHTTP2_TOKEN_CONTENT_LENGTH: {
+ if (stream->content_length != -1) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ stream->content_length = parse_uint(nv->value->base, nv->value->len);
+ if (stream->content_length == -1) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ }
+ /* disallowed header fields */
+ case NGHTTP2_TOKEN_CONNECTION:
+ case NGHTTP2_TOKEN_KEEP_ALIVE:
+ case NGHTTP2_TOKEN_PROXY_CONNECTION:
+ case NGHTTP2_TOKEN_TRANSFER_ENCODING:
+ case NGHTTP2_TOKEN_UPGRADE:
+ return NGHTTP2_ERR_HTTP_HEADER;
+ case NGHTTP2_TOKEN_TE:
+ if (!lstrieq("trailers", nv->value->base, nv->value->len)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ default:
+ if (nv->name->base[0] == ':') {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ }
+
+ if (nv->name->base[0] != ':') {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED;
+ }
+
+ return 0;
+}
+
+static int http_response_on_header(nghttp2_stream *stream, nghttp2_hd_nv *nv,
+ int trailer) {
+ if (nv->name->base[0] == ':') {
+ if (trailer ||
+ (stream->http_flags & NGHTTP2_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ }
+
+ switch (nv->token) {
+ case NGHTTP2_TOKEN__STATUS: {
+ if (!check_pseudo_header(stream, nv, NGHTTP2_HTTP_FLAG__STATUS)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ if (nv->value->len != 3) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ stream->status_code = (int16_t)parse_uint(nv->value->base, nv->value->len);
+ if (stream->status_code == -1) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ }
+ case NGHTTP2_TOKEN_CONTENT_LENGTH: {
+ if (stream->content_length != -1) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ stream->content_length = parse_uint(nv->value->base, nv->value->len);
+ if (stream->content_length == -1) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ }
+ /* disallowed header fields */
+ case NGHTTP2_TOKEN_CONNECTION:
+ case NGHTTP2_TOKEN_KEEP_ALIVE:
+ case NGHTTP2_TOKEN_PROXY_CONNECTION:
+ case NGHTTP2_TOKEN_TRANSFER_ENCODING:
+ case NGHTTP2_TOKEN_UPGRADE:
+ return NGHTTP2_ERR_HTTP_HEADER;
+ case NGHTTP2_TOKEN_TE:
+ if (!lstrieq("trailers", nv->value->base, nv->value->len)) {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ break;
+ default:
+ if (nv->name->base[0] == ':') {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ }
+
+ if (nv->name->base[0] != ':') {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED;
+ }
+
+ return 0;
+}
+
+/* Generated by genauthroitychartbl.py */
+static char VALID_AUTHORITY_CHARS[] = {
+ 0 /* NUL */, 0 /* SOH */, 0 /* STX */, 0 /* ETX */, 0 /* EOT */,
+ 0 /* ENQ */, 0 /* ACK */, 0 /* BEL */, 0 /* BS */, 0 /* HT */,
+ 0 /* LF */, 0 /* VT */, 0 /* FF */, 0 /* CR */, 0 /* SO */,
+ 0 /* SI */, 0 /* DLE */, 0 /* DC1 */, 0 /* DC2 */, 0 /* DC3 */,
+ 0 /* DC4 */, 0 /* NAK */, 0 /* SYN */, 0 /* ETB */, 0 /* CAN */,
+ 0 /* EM */, 0 /* SUB */, 0 /* ESC */, 0 /* FS */, 0 /* GS */,
+ 0 /* RS */, 0 /* US */, 0 /* SPC */, 1 /* ! */, 0 /* " */,
+ 0 /* # */, 1 /* $ */, 1 /* % */, 1 /* & */, 1 /* ' */,
+ 1 /* ( */, 1 /* ) */, 1 /* * */, 1 /* + */, 1 /* , */,
+ 1 /* - */, 1 /* . */, 0 /* / */, 1 /* 0 */, 1 /* 1 */,
+ 1 /* 2 */, 1 /* 3 */, 1 /* 4 */, 1 /* 5 */, 1 /* 6 */,
+ 1 /* 7 */, 1 /* 8 */, 1 /* 9 */, 1 /* : */, 1 /* ; */,
+ 0 /* < */, 1 /* = */, 0 /* > */, 0 /* ? */, 1 /* @ */,
+ 1 /* A */, 1 /* B */, 1 /* C */, 1 /* D */, 1 /* E */,
+ 1 /* F */, 1 /* G */, 1 /* H */, 1 /* I */, 1 /* J */,
+ 1 /* K */, 1 /* L */, 1 /* M */, 1 /* N */, 1 /* O */,
+ 1 /* P */, 1 /* Q */, 1 /* R */, 1 /* S */, 1 /* T */,
+ 1 /* U */, 1 /* V */, 1 /* W */, 1 /* X */, 1 /* Y */,
+ 1 /* Z */, 1 /* [ */, 0 /* \ */, 1 /* ] */, 0 /* ^ */,
+ 1 /* _ */, 0 /* ` */, 1 /* a */, 1 /* b */, 1 /* c */,
+ 1 /* d */, 1 /* e */, 1 /* f */, 1 /* g */, 1 /* h */,
+ 1 /* i */, 1 /* j */, 1 /* k */, 1 /* l */, 1 /* m */,
+ 1 /* n */, 1 /* o */, 1 /* p */, 1 /* q */, 1 /* r */,
+ 1 /* s */, 1 /* t */, 1 /* u */, 1 /* v */, 1 /* w */,
+ 1 /* x */, 1 /* y */, 1 /* z */, 0 /* { */, 0 /* | */,
+ 0 /* } */, 1 /* ~ */, 0 /* DEL */, 0 /* 0x80 */, 0 /* 0x81 */,
+ 0 /* 0x82 */, 0 /* 0x83 */, 0 /* 0x84 */, 0 /* 0x85 */, 0 /* 0x86 */,
+ 0 /* 0x87 */, 0 /* 0x88 */, 0 /* 0x89 */, 0 /* 0x8a */, 0 /* 0x8b */,
+ 0 /* 0x8c */, 0 /* 0x8d */, 0 /* 0x8e */, 0 /* 0x8f */, 0 /* 0x90 */,
+ 0 /* 0x91 */, 0 /* 0x92 */, 0 /* 0x93 */, 0 /* 0x94 */, 0 /* 0x95 */,
+ 0 /* 0x96 */, 0 /* 0x97 */, 0 /* 0x98 */, 0 /* 0x99 */, 0 /* 0x9a */,
+ 0 /* 0x9b */, 0 /* 0x9c */, 0 /* 0x9d */, 0 /* 0x9e */, 0 /* 0x9f */,
+ 0 /* 0xa0 */, 0 /* 0xa1 */, 0 /* 0xa2 */, 0 /* 0xa3 */, 0 /* 0xa4 */,
+ 0 /* 0xa5 */, 0 /* 0xa6 */, 0 /* 0xa7 */, 0 /* 0xa8 */, 0 /* 0xa9 */,
+ 0 /* 0xaa */, 0 /* 0xab */, 0 /* 0xac */, 0 /* 0xad */, 0 /* 0xae */,
+ 0 /* 0xaf */, 0 /* 0xb0 */, 0 /* 0xb1 */, 0 /* 0xb2 */, 0 /* 0xb3 */,
+ 0 /* 0xb4 */, 0 /* 0xb5 */, 0 /* 0xb6 */, 0 /* 0xb7 */, 0 /* 0xb8 */,
+ 0 /* 0xb9 */, 0 /* 0xba */, 0 /* 0xbb */, 0 /* 0xbc */, 0 /* 0xbd */,
+ 0 /* 0xbe */, 0 /* 0xbf */, 0 /* 0xc0 */, 0 /* 0xc1 */, 0 /* 0xc2 */,
+ 0 /* 0xc3 */, 0 /* 0xc4 */, 0 /* 0xc5 */, 0 /* 0xc6 */, 0 /* 0xc7 */,
+ 0 /* 0xc8 */, 0 /* 0xc9 */, 0 /* 0xca */, 0 /* 0xcb */, 0 /* 0xcc */,
+ 0 /* 0xcd */, 0 /* 0xce */, 0 /* 0xcf */, 0 /* 0xd0 */, 0 /* 0xd1 */,
+ 0 /* 0xd2 */, 0 /* 0xd3 */, 0 /* 0xd4 */, 0 /* 0xd5 */, 0 /* 0xd6 */,
+ 0 /* 0xd7 */, 0 /* 0xd8 */, 0 /* 0xd9 */, 0 /* 0xda */, 0 /* 0xdb */,
+ 0 /* 0xdc */, 0 /* 0xdd */, 0 /* 0xde */, 0 /* 0xdf */, 0 /* 0xe0 */,
+ 0 /* 0xe1 */, 0 /* 0xe2 */, 0 /* 0xe3 */, 0 /* 0xe4 */, 0 /* 0xe5 */,
+ 0 /* 0xe6 */, 0 /* 0xe7 */, 0 /* 0xe8 */, 0 /* 0xe9 */, 0 /* 0xea */,
+ 0 /* 0xeb */, 0 /* 0xec */, 0 /* 0xed */, 0 /* 0xee */, 0 /* 0xef */,
+ 0 /* 0xf0 */, 0 /* 0xf1 */, 0 /* 0xf2 */, 0 /* 0xf3 */, 0 /* 0xf4 */,
+ 0 /* 0xf5 */, 0 /* 0xf6 */, 0 /* 0xf7 */, 0 /* 0xf8 */, 0 /* 0xf9 */,
+ 0 /* 0xfa */, 0 /* 0xfb */, 0 /* 0xfc */, 0 /* 0xfd */, 0 /* 0xfe */,
+ 0 /* 0xff */
+};
+
+static int check_authority(const uint8_t *value, size_t len) {
+ const uint8_t *last;
+ for (last = value + len; value != last; ++value) {
+ if (!VALID_AUTHORITY_CHARS[*value]) {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+static int check_scheme(const uint8_t *value, size_t len) {
+ const uint8_t *last;
+ if (len == 0) {
+ return 0;
+ }
+
+ if (!(('A' <= *value && *value <= 'Z') || ('a' <= *value && *value <= 'z'))) {
+ return 0;
+ }
+
+ last = value + len;
+ ++value;
+
+ for (; value != last; ++value) {
+ if (!(('A' <= *value && *value <= 'Z') ||
+ ('a' <= *value && *value <= 'z') ||
+ ('0' <= *value && *value <= '9') || *value == '+' || *value == '-' ||
+ *value == '.')) {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+int nghttp2_http_on_header(nghttp2_session *session, nghttp2_stream *stream,
+ nghttp2_frame *frame, nghttp2_hd_nv *nv,
+ int trailer) {
+ int rv;
+
+ /* We are strict for pseudo header field. One bad character should
+ lead to fail. OTOH, we should be a bit forgiving for regular
+ headers, since existing public internet has so much illegal
+ headers floating around and if we kill the stream because of
+ this, we may disrupt many web sites and/or libraries. So we
+ become conservative here, and just ignore those illegal regular
+ headers. */
+ if (!nghttp2_check_header_name(nv->name->base, nv->name->len)) {
+ size_t i;
+ if (nv->name->len > 0 && nv->name->base[0] == ':') {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ /* header field name must be lower-cased without exception */
+ for (i = 0; i < nv->name->len; ++i) {
+ uint8_t c = nv->name->base[i];
+ if ('A' <= c && c <= 'Z') {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ }
+ /* When ignoring regular headers, we set this flag so that we
+ still enforce header field ordering rule for pseudo header
+ fields. */
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED;
+ return NGHTTP2_ERR_IGN_HTTP_HEADER;
+ }
+
+ if (nv->token == NGHTTP2_TOKEN__AUTHORITY ||
+ nv->token == NGHTTP2_TOKEN_HOST) {
+ rv = check_authority(nv->value->base, nv->value->len);
+ } else if (nv->token == NGHTTP2_TOKEN__SCHEME) {
+ rv = check_scheme(nv->value->base, nv->value->len);
+ } else {
+ rv = nghttp2_check_header_value(nv->value->base, nv->value->len);
+ }
+
+ if (rv == 0) {
+ assert(nv->name->len > 0);
+ if (nv->name->base[0] == ':') {
+ return NGHTTP2_ERR_HTTP_HEADER;
+ }
+ /* When ignoring regular headers, we set this flag so that we
+ still enforce header field ordering rule for pseudo header
+ fields. */
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_PSEUDO_HEADER_DISALLOWED;
+ return NGHTTP2_ERR_IGN_HTTP_HEADER;
+ }
+
+ if (session->server || frame->hd.type == NGHTTP2_PUSH_PROMISE) {
+ return http_request_on_header(stream, nv, trailer);
+ }
+
+ return http_response_on_header(stream, nv, trailer);
+}
+
+int nghttp2_http_on_request_headers(nghttp2_stream *stream,
+ nghttp2_frame *frame) {
+ if (stream->http_flags & NGHTTP2_HTTP_FLAG_METH_CONNECT) {
+ if ((stream->http_flags & NGHTTP2_HTTP_FLAG__AUTHORITY) == 0) {
+ return -1;
+ }
+ stream->content_length = -1;
+ } else {
+ if ((stream->http_flags & NGHTTP2_HTTP_FLAG_REQ_HEADERS) !=
+ NGHTTP2_HTTP_FLAG_REQ_HEADERS ||
+ (stream->http_flags &
+ (NGHTTP2_HTTP_FLAG__AUTHORITY | NGHTTP2_HTTP_FLAG_HOST)) == 0) {
+ return -1;
+ }
+ if (!check_path(stream)) {
+ return -1;
+ }
+ }
+
+ if (frame->hd.type == NGHTTP2_PUSH_PROMISE) {
+ /* we are going to reuse data fields for upcoming response. Clear
+ them now, except for method flags. */
+ stream->http_flags &= NGHTTP2_HTTP_FLAG_METH_ALL;
+ stream->content_length = -1;
+ }
+
+ return 0;
+}
+
+int nghttp2_http_on_response_headers(nghttp2_stream *stream) {
+ if ((stream->http_flags & NGHTTP2_HTTP_FLAG__STATUS) == 0) {
+ return -1;
+ }
+
+ if (stream->status_code / 100 == 1) {
+ /* non-final response */
+ stream->http_flags =
+ (uint16_t)((stream->http_flags & NGHTTP2_HTTP_FLAG_METH_ALL) |
+ NGHTTP2_HTTP_FLAG_EXPECT_FINAL_RESPONSE);
+ stream->content_length = -1;
+ stream->status_code = -1;
+ return 0;
+ }
+
+ stream->http_flags =
+ (uint16_t)(stream->http_flags & ~NGHTTP2_HTTP_FLAG_EXPECT_FINAL_RESPONSE);
+
+ if (!expect_response_body(stream)) {
+ stream->content_length = 0;
+ } else if (stream->http_flags & (NGHTTP2_HTTP_FLAG_METH_CONNECT |
+ NGHTTP2_HTTP_FLAG_METH_UPGRADE_WORKAROUND)) {
+ stream->content_length = -1;
+ }
+
+ return 0;
+}
+
+int nghttp2_http_on_trailer_headers(nghttp2_stream *stream _U_,
+ nghttp2_frame *frame) {
+ if ((frame->hd.flags & NGHTTP2_FLAG_END_STREAM) == 0) {
+ return -1;
+ }
+
+ return 0;
+}
+
+int nghttp2_http_on_remote_end_stream(nghttp2_stream *stream) {
+ if (stream->http_flags & NGHTTP2_HTTP_FLAG_EXPECT_FINAL_RESPONSE) {
+ return -1;
+ }
+
+ if (stream->content_length != -1 &&
+ stream->content_length != stream->recv_content_length) {
+ return -1;
+ }
+
+ return 0;
+}
+
+int nghttp2_http_on_data_chunk(nghttp2_stream *stream, size_t n) {
+ stream->recv_content_length += (int64_t)n;
+
+ if ((stream->http_flags & NGHTTP2_HTTP_FLAG_EXPECT_FINAL_RESPONSE) ||
+ (stream->content_length != -1 &&
+ stream->recv_content_length > stream->content_length)) {
+ return -1;
+ }
+
+ return 0;
+}
+
+void nghttp2_http_record_request_method(nghttp2_stream *stream,
+ nghttp2_frame *frame) {
+ const nghttp2_nv *nva;
+ size_t nvlen;
+ size_t i;
+
+ switch (frame->hd.type) {
+ case NGHTTP2_HEADERS:
+ nva = frame->headers.nva;
+ nvlen = frame->headers.nvlen;
+ break;
+ case NGHTTP2_PUSH_PROMISE:
+ nva = frame->push_promise.nva;
+ nvlen = frame->push_promise.nvlen;
+ break;
+ default:
+ return;
+ }
+
+ /* TODO we should do this strictly. */
+ for (i = 0; i < nvlen; ++i) {
+ const nghttp2_nv *nv = &nva[i];
+ if (!(nv->namelen == 7 && nv->name[6] == 'd' &&
+ memcmp(":metho", nv->name, nv->namelen - 1) == 0)) {
+ continue;
+ }
+ if (lstreq("CONNECT", nv->value, nv->valuelen)) {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_METH_CONNECT;
+ return;
+ }
+ if (lstreq("HEAD", nv->value, nv->valuelen)) {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_METH_HEAD;
+ return;
+ }
+ return;
+ }
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_map.h"
+
+#include <string.h>
+
+#define INITIAL_TABLE_LENGTH 256
+
+int nghttp2_map_init(nghttp2_map *map, nghttp2_mem *mem) {
+ map->mem = mem;
+ map->tablelen = INITIAL_TABLE_LENGTH;
+ map->table =
+ nghttp2_mem_calloc(mem, map->tablelen, sizeof(nghttp2_map_entry *));
+ if (map->table == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ map->size = 0;
+
+ return 0;
+}
+
+void nghttp2_map_free(nghttp2_map *map) {
+ nghttp2_mem_free(map->mem, map->table);
+}
+
+void nghttp2_map_each_free(nghttp2_map *map,
+ int (*func)(nghttp2_map_entry *entry, void *ptr),
+ void *ptr) {
+ uint32_t i;
+ for (i = 0; i < map->tablelen; ++i) {
+ nghttp2_map_entry *entry;
+ for (entry = map->table[i]; entry;) {
+ nghttp2_map_entry *next = entry->next;
+ func(entry, ptr);
+ entry = next;
+ }
+ map->table[i] = NULL;
+ }
+}
+
+int nghttp2_map_each(nghttp2_map *map,
+ int (*func)(nghttp2_map_entry *entry, void *ptr),
+ void *ptr) {
+ int rv;
+ uint32_t i;
+ for (i = 0; i < map->tablelen; ++i) {
+ nghttp2_map_entry *entry;
+ for (entry = map->table[i]; entry; entry = entry->next) {
+ rv = func(entry, ptr);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+ }
+ return 0;
+}
+
+void nghttp2_map_entry_init(nghttp2_map_entry *entry, key_type key) {
+ entry->key = key;
+ entry->next = NULL;
+}
+
+/* Same hash function in android HashMap source code. */
+/* The |mod| must be power of 2 */
+static uint32_t hash(int32_t key, uint32_t mod) {
+ uint32_t h = (uint32_t)key;
+ h ^= (h >> 20) ^ (h >> 12);
+ h ^= (h >> 7) ^ (h >> 4);
+ return h & (mod - 1);
+}
+
+static int insert(nghttp2_map_entry **table, uint32_t tablelen,
+ nghttp2_map_entry *entry) {
+ uint32_t h = hash(entry->key, tablelen);
+ if (table[h] == NULL) {
+ table[h] = entry;
+ } else {
+ nghttp2_map_entry *p;
+ /* We won't allow duplicated key, so check it out. */
+ for (p = table[h]; p; p = p->next) {
+ if (p->key == entry->key) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+ }
+ entry->next = table[h];
+ table[h] = entry;
+ }
+ return 0;
+}
+
+/* new_tablelen must be power of 2 */
+static int resize(nghttp2_map *map, uint32_t new_tablelen) {
+ uint32_t i;
+ nghttp2_map_entry **new_table;
+
+ new_table =
+ nghttp2_mem_calloc(map->mem, new_tablelen, sizeof(nghttp2_map_entry *));
+ if (new_table == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ for (i = 0; i < map->tablelen; ++i) {
+ nghttp2_map_entry *entry;
+ for (entry = map->table[i]; entry;) {
+ nghttp2_map_entry *next = entry->next;
+ entry->next = NULL;
+ /* This function must succeed */
+ insert(new_table, new_tablelen, entry);
+ entry = next;
+ }
+ }
+ nghttp2_mem_free(map->mem, map->table);
+ map->tablelen = new_tablelen;
+ map->table = new_table;
+
+ return 0;
+}
+
+int nghttp2_map_insert(nghttp2_map *map, nghttp2_map_entry *new_entry) {
+ int rv;
+ /* Load factor is 0.75 */
+ if ((map->size + 1) * 4 > map->tablelen * 3) {
+ rv = resize(map, map->tablelen * 2);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+ rv = insert(map->table, map->tablelen, new_entry);
+ if (rv != 0) {
+ return rv;
+ }
+ ++map->size;
+ return 0;
+}
+
+nghttp2_map_entry *nghttp2_map_find(nghttp2_map *map, key_type key) {
+ uint32_t h;
+ nghttp2_map_entry *entry;
+ h = hash(key, map->tablelen);
+ for (entry = map->table[h]; entry; entry = entry->next) {
+ if (entry->key == key) {
+ return entry;
+ }
+ }
+ return NULL;
+}
+
+int nghttp2_map_remove(nghttp2_map *map, key_type key) {
+ uint32_t h;
+ nghttp2_map_entry **dst;
+
+ h = hash(key, map->tablelen);
+
+ for (dst = &map->table[h]; *dst; dst = &(*dst)->next) {
+ if ((*dst)->key != key) {
+ continue;
+ }
+
+ *dst = (*dst)->next;
+ --map->size;
+ return 0;
+ }
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+}
+
+size_t nghttp2_map_size(nghttp2_map *map) { return map->size; }
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2014 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_mem.h"
+
+static void *default_malloc(size_t size, void *mem_user_data _U_) {
+ return malloc(size);
+}
+
+static void default_free(void *ptr, void *mem_user_data _U_) { free(ptr); }
+
+static void *default_calloc(size_t nmemb, size_t size,
+ void *mem_user_data _U_) {
+ return calloc(nmemb, size);
+}
+
+static void *default_realloc(void *ptr, size_t size, void *mem_user_data _U_) {
+ return realloc(ptr, size);
+}
+
+static nghttp2_mem mem_default = {NULL, default_malloc, default_free,
+ default_calloc, default_realloc};
+
+nghttp2_mem *nghttp2_mem_default(void) { return &mem_default; }
+
+void *nghttp2_mem_malloc(nghttp2_mem *mem, size_t size) {
+ return mem->malloc(size, mem->mem_user_data);
+}
+
+void nghttp2_mem_free(nghttp2_mem *mem, void *ptr) {
+ mem->free(ptr, mem->mem_user_data);
+}
+
+void nghttp2_mem_free2(nghttp2_free free_func, void *ptr, void *mem_user_data) {
+ free_func(ptr, mem_user_data);
+}
+
+void *nghttp2_mem_calloc(nghttp2_mem *mem, size_t nmemb, size_t size) {
+ return mem->calloc(nmemb, size, mem->mem_user_data);
+}
+
+void *nghttp2_mem_realloc(nghttp2_mem *mem, void *ptr, size_t size) {
+ return mem->realloc(ptr, size, mem->mem_user_data);
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_npn.h"
+
+#include <string.h>
+
+static int select_next_protocol(unsigned char **out, unsigned char *outlen,
+ const unsigned char *in, unsigned int inlen,
+ const char *key, unsigned int keylen) {
+ unsigned int i;
+ for (i = 0; i + keylen <= inlen; i += (unsigned int)(in [i] + 1)) {
+ if (memcmp(&in[i], key, keylen) == 0) {
+ *out = (unsigned char *)&in[i + 1];
+ *outlen = in[i];
+ return 0;
+ }
+ }
+ return -1;
+}
+
+#define NGHTTP2_HTTP_1_1_ALPN "\x8http/1.1"
+#define NGHTTP2_HTTP_1_1_ALPN_LEN (sizeof(NGHTTP2_HTTP_1_1_ALPN) - 1)
+
+int nghttp2_select_next_protocol(unsigned char **out, unsigned char *outlen,
+ const unsigned char *in, unsigned int inlen) {
+ if (select_next_protocol(out, outlen, in, inlen, NGHTTP2_PROTO_ALPN,
+ NGHTTP2_PROTO_ALPN_LEN) == 0) {
+ return 1;
+ }
+ if (select_next_protocol(out, outlen, in, inlen, NGHTTP2_HTTP_1_1_ALPN,
+ NGHTTP2_HTTP_1_1_ALPN_LEN) == 0) {
+ return 0;
+ }
+ return -1;
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2014 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_option.h"
+
+#include "nghttp2_session.h"
+
+int nghttp2_option_new(nghttp2_option **option_ptr) {
+ *option_ptr = calloc(1, sizeof(nghttp2_option));
+
+ if (*option_ptr == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ return 0;
+}
+
+void nghttp2_option_del(nghttp2_option *option) { free(option); }
+
+void nghttp2_option_set_no_auto_window_update(nghttp2_option *option, int val) {
+ option->opt_set_mask |= NGHTTP2_OPT_NO_AUTO_WINDOW_UPDATE;
+ option->no_auto_window_update = val;
+}
+
+void nghttp2_option_set_peer_max_concurrent_streams(nghttp2_option *option,
+ uint32_t val) {
+ option->opt_set_mask |= NGHTTP2_OPT_PEER_MAX_CONCURRENT_STREAMS;
+ option->peer_max_concurrent_streams = val;
+}
+
+void nghttp2_option_set_no_recv_client_magic(nghttp2_option *option, int val) {
+ option->opt_set_mask |= NGHTTP2_OPT_NO_RECV_CLIENT_MAGIC;
+ option->no_recv_client_magic = val;
+}
+
+void nghttp2_option_set_no_http_messaging(nghttp2_option *option, int val) {
+ option->opt_set_mask |= NGHTTP2_OPT_NO_HTTP_MESSAGING;
+ option->no_http_messaging = val;
+}
+
+void nghttp2_option_set_max_reserved_remote_streams(nghttp2_option *option,
+ uint32_t val) {
+ option->opt_set_mask |= NGHTTP2_OPT_MAX_RESERVED_REMOTE_STREAMS;
+ option->max_reserved_remote_streams = val;
+}
+
+static void set_ext_type(uint8_t *ext_types, uint8_t type) {
+ ext_types[type / 8] = (uint8_t)(ext_types[type / 8] | (1 << (type & 0x7)));
+}
+
+void nghttp2_option_set_user_recv_extension_type(nghttp2_option *option,
+ uint8_t type) {
+ if (type < 10) {
+ return;
+ }
+
+ option->opt_set_mask |= NGHTTP2_OPT_USER_RECV_EXT_TYPES;
+ set_ext_type(option->user_recv_ext_types, type);
+}
+
+void nghttp2_option_set_builtin_recv_extension_type(nghttp2_option *option,
+ uint8_t type) {
+ switch (type) {
+ case NGHTTP2_ALTSVC:
+ option->opt_set_mask |= NGHTTP2_OPT_BUILTIN_RECV_EXT_TYPES;
+ option->builtin_recv_ext_types |= NGHTTP2_TYPEMASK_ALTSVC;
+ return;
+ default:
+ return;
+ }
+}
+
+void nghttp2_option_set_no_auto_ping_ack(nghttp2_option *option, int val) {
+ option->opt_set_mask |= NGHTTP2_OPT_NO_AUTO_PING_ACK;
+ option->no_auto_ping_ack = val;
+}
+
+void nghttp2_option_set_max_send_header_block_length(nghttp2_option *option,
+ size_t val) {
+ option->opt_set_mask |= NGHTTP2_OPT_MAX_SEND_HEADER_BLOCK_LENGTH;
+ option->max_send_header_block_length = val;
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_outbound_item.h"
+
+#include <assert.h>
+#include <string.h>
+
+void nghttp2_outbound_item_init(nghttp2_outbound_item *item) {
+ item->cycle = 0;
+ item->qnext = NULL;
+ item->queued = 0;
+
+ memset(&item->aux_data, 0, sizeof(nghttp2_aux_data));
+}
+
+void nghttp2_outbound_item_free(nghttp2_outbound_item *item, nghttp2_mem *mem) {
+ nghttp2_frame *frame;
+
+ if (item == NULL) {
+ return;
+ }
+
+ frame = &item->frame;
+
+ switch (frame->hd.type) {
+ case NGHTTP2_DATA:
+ nghttp2_frame_data_free(&frame->data);
+ break;
+ case NGHTTP2_HEADERS:
+ nghttp2_frame_headers_free(&frame->headers, mem);
+ break;
+ case NGHTTP2_PRIORITY:
+ nghttp2_frame_priority_free(&frame->priority);
+ break;
+ case NGHTTP2_RST_STREAM:
+ nghttp2_frame_rst_stream_free(&frame->rst_stream);
+ break;
+ case NGHTTP2_SETTINGS:
+ nghttp2_frame_settings_free(&frame->settings, mem);
+ break;
+ case NGHTTP2_PUSH_PROMISE:
+ nghttp2_frame_push_promise_free(&frame->push_promise, mem);
+ break;
+ case NGHTTP2_PING:
+ nghttp2_frame_ping_free(&frame->ping);
+ break;
+ case NGHTTP2_GOAWAY:
+ nghttp2_frame_goaway_free(&frame->goaway, mem);
+ break;
+ case NGHTTP2_WINDOW_UPDATE:
+ nghttp2_frame_window_update_free(&frame->window_update);
+ break;
+ default: {
+ nghttp2_ext_aux_data *aux_data;
+
+ aux_data = &item->aux_data.ext;
+
+ if (aux_data->builtin == 0) {
+ nghttp2_frame_extension_free(&frame->ext);
+ break;
+ }
+
+ switch (frame->hd.type) {
+ case NGHTTP2_ALTSVC:
+ nghttp2_frame_altsvc_free(&frame->ext, mem);
+ break;
+ default:
+ assert(0);
+ break;
+ }
+ }
+ }
+}
+
+void nghttp2_outbound_queue_init(nghttp2_outbound_queue *q) {
+ q->head = q->tail = NULL;
+ q->n = 0;
+}
+
+void nghttp2_outbound_queue_push(nghttp2_outbound_queue *q,
+ nghttp2_outbound_item *item) {
+ if (q->tail) {
+ q->tail = q->tail->qnext = item;
+ } else {
+ q->head = q->tail = item;
+ }
+ ++q->n;
+}
+
+void nghttp2_outbound_queue_pop(nghttp2_outbound_queue *q) {
+ nghttp2_outbound_item *item;
+ if (!q->head) {
+ return;
+ }
+ item = q->head;
+ q->head = q->head->qnext;
+ item->qnext = NULL;
+ if (!q->head) {
+ q->tail = NULL;
+ }
+ --q->n;
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_pq.h"
+
+#include <stdio.h>
+#include <assert.h>
+
+#include "nghttp2_helper.h"
+
+int nghttp2_pq_init(nghttp2_pq *pq, nghttp2_less less, nghttp2_mem *mem) {
+ pq->mem = mem;
+ pq->capacity = 0;
+ pq->q = NULL;
+ pq->length = 0;
+ pq->less = less;
+ return 0;
+}
+
+void nghttp2_pq_free(nghttp2_pq *pq) {
+ nghttp2_mem_free(pq->mem, pq->q);
+ pq->q = NULL;
+}
+
+static void swap(nghttp2_pq *pq, size_t i, size_t j) {
+ nghttp2_pq_entry *a = pq->q[i];
+ nghttp2_pq_entry *b = pq->q[j];
+
+ pq->q[i] = b;
+ b->index = i;
+ pq->q[j] = a;
+ a->index = j;
+}
+
+static void bubble_up(nghttp2_pq *pq, size_t index) {
+ size_t parent;
+ while (index != 0) {
+ parent = (index - 1) / 2;
+ if (!pq->less(pq->q[index], pq->q[parent])) {
+ return;
+ }
+ swap(pq, parent, index);
+ index = parent;
+ }
+}
+
+int nghttp2_pq_push(nghttp2_pq *pq, nghttp2_pq_entry *item) {
+ if (pq->capacity <= pq->length) {
+ void *nq;
+ size_t ncapacity;
+
+ ncapacity = nghttp2_max(4, (pq->capacity * 2));
+
+ nq = nghttp2_mem_realloc(pq->mem, pq->q,
+ ncapacity * sizeof(nghttp2_pq_entry *));
+ if (nq == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+ pq->capacity = ncapacity;
+ pq->q = nq;
+ }
+ pq->q[pq->length] = item;
+ item->index = pq->length;
+ ++pq->length;
+ bubble_up(pq, pq->length - 1);
+ return 0;
+}
+
+nghttp2_pq_entry *nghttp2_pq_top(nghttp2_pq *pq) {
+ if (pq->length == 0) {
+ return NULL;
+ } else {
+ return pq->q[0];
+ }
+}
+
+static void bubble_down(nghttp2_pq *pq, size_t index) {
+ size_t i, j, minindex;
+ for (;;) {
+ j = index * 2 + 1;
+ minindex = index;
+ for (i = 0; i < 2; ++i, ++j) {
+ if (j >= pq->length) {
+ break;
+ }
+ if (pq->less(pq->q[j], pq->q[minindex])) {
+ minindex = j;
+ }
+ }
+ if (minindex == index) {
+ return;
+ }
+ swap(pq, index, minindex);
+ index = minindex;
+ }
+}
+
+void nghttp2_pq_pop(nghttp2_pq *pq) {
+ if (pq->length > 0) {
+ pq->q[0] = pq->q[pq->length - 1];
+ pq->q[0]->index = 0;
+ --pq->length;
+ bubble_down(pq, 0);
+ }
+}
+
+void nghttp2_pq_remove(nghttp2_pq *pq, nghttp2_pq_entry *item) {
+ assert(pq->q[item->index] == item);
+
+ if (item->index == 0) {
+ nghttp2_pq_pop(pq);
+ return;
+ }
+
+ if (item->index == pq->length - 1) {
+ --pq->length;
+ return;
+ }
+
+ pq->q[item->index] = pq->q[pq->length - 1];
+ pq->q[item->index]->index = item->index;
+ --pq->length;
+
+ if (pq->less(item, pq->q[item->index])) {
+ bubble_down(pq, item->index);
+ } else {
+ bubble_up(pq, item->index);
+ }
+}
+
+int nghttp2_pq_empty(nghttp2_pq *pq) { return pq->length == 0; }
+
+size_t nghttp2_pq_size(nghttp2_pq *pq) { return pq->length; }
+
+void nghttp2_pq_update(nghttp2_pq *pq, nghttp2_pq_item_cb fun, void *arg) {
+ size_t i;
+ int rv = 0;
+ if (pq->length == 0) {
+ return;
+ }
+ for (i = 0; i < pq->length; ++i) {
+ rv |= (*fun)(pq->q[i], arg);
+ }
+ if (rv) {
+ for (i = pq->length; i > 0; --i) {
+ bubble_down(pq, i - 1);
+ }
+ }
+}
+
+int nghttp2_pq_each(nghttp2_pq *pq, nghttp2_pq_item_cb fun, void *arg) {
+ size_t i;
+
+ if (pq->length == 0) {
+ return 0;
+ }
+ for (i = 0; i < pq->length; ++i) {
+ if ((*fun)(pq->q[i], arg)) {
+ return 1;
+ }
+ }
+ return 0;
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2014 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_priority_spec.h"
+
+void nghttp2_priority_spec_init(nghttp2_priority_spec *pri_spec,
+ int32_t stream_id, int32_t weight,
+ int exclusive) {
+ pri_spec->stream_id = stream_id;
+ pri_spec->weight = weight;
+ pri_spec->exclusive = exclusive != 0;
+}
+
+void nghttp2_priority_spec_default_init(nghttp2_priority_spec *pri_spec) {
+ pri_spec->stream_id = 0;
+ pri_spec->weight = NGHTTP2_DEFAULT_WEIGHT;
+ pri_spec->exclusive = 0;
+}
+
+int nghttp2_priority_spec_check_default(const nghttp2_priority_spec *pri_spec) {
+ return pri_spec->stream_id == 0 &&
+ pri_spec->weight == NGHTTP2_DEFAULT_WEIGHT && pri_spec->exclusive == 0;
+}
+
+void nghttp2_priority_spec_normalize_weight(nghttp2_priority_spec *pri_spec) {
+ if (pri_spec->weight < NGHTTP2_MIN_WEIGHT) {
+ pri_spec->weight = NGHTTP2_MIN_WEIGHT;
+ } else if (pri_spec->weight > NGHTTP2_MAX_WEIGHT) {
+ pri_spec->weight = NGHTTP2_MAX_WEIGHT;
+ }
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_queue.h"
+
+#include <string.h>
+#include <assert.h>
+
+void nghttp2_queue_init(nghttp2_queue *queue) {
+ queue->front = queue->back = NULL;
+}
+
+void nghttp2_queue_free(nghttp2_queue *queue) {
+ if (!queue) {
+ return;
+ } else {
+ nghttp2_queue_cell *p = queue->front;
+ while (p) {
+ nghttp2_queue_cell *next = p->next;
+ free(p);
+ p = next;
+ }
+ }
+}
+
+int nghttp2_queue_push(nghttp2_queue *queue, void *data) {
+ nghttp2_queue_cell *new_cell =
+ (nghttp2_queue_cell *)malloc(sizeof(nghttp2_queue_cell));
+ if (!new_cell) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+ new_cell->data = data;
+ new_cell->next = NULL;
+ if (queue->back) {
+ queue->back->next = new_cell;
+ queue->back = new_cell;
+
+ } else {
+ queue->front = queue->back = new_cell;
+ }
+ return 0;
+}
+
+void nghttp2_queue_pop(nghttp2_queue *queue) {
+ nghttp2_queue_cell *front = queue->front;
+ assert(front);
+ queue->front = front->next;
+ if (front == queue->back) {
+ queue->back = NULL;
+ }
+ free(front);
+}
+
+void *nghttp2_queue_front(nghttp2_queue *queue) {
+ assert(queue->front);
+ return queue->front->data;
+}
+
+void *nghttp2_queue_back(nghttp2_queue *queue) {
+ assert(queue->back);
+ return queue->back->data;
+}
+
+int nghttp2_queue_empty(nghttp2_queue *queue) { return queue->front == NULL; }
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2016 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_rcbuf.h"
+
+#include <string.h>
+#include <assert.h>
+
+#include "nghttp2_mem.h"
+
+int nghttp2_rcbuf_new(nghttp2_rcbuf **rcbuf_ptr, size_t size,
+ nghttp2_mem *mem) {
+ uint8_t *p;
+
+ p = nghttp2_mem_malloc(mem, sizeof(nghttp2_rcbuf) + size);
+ if (p == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ *rcbuf_ptr = (void *)p;
+
+ (*rcbuf_ptr)->mem_user_data = mem->mem_user_data;
+ (*rcbuf_ptr)->free = mem->free;
+ (*rcbuf_ptr)->base = p + sizeof(nghttp2_rcbuf);
+ (*rcbuf_ptr)->len = size;
+ (*rcbuf_ptr)->ref = 1;
+
+ return 0;
+}
+
+int nghttp2_rcbuf_new2(nghttp2_rcbuf **rcbuf_ptr, const uint8_t *src,
+ size_t srclen, nghttp2_mem *mem) {
+ int rv;
+
+ rv = nghttp2_rcbuf_new(rcbuf_ptr, srclen + 1, mem);
+ if (rv != 0) {
+ return rv;
+ }
+
+ memcpy((*rcbuf_ptr)->base, src, srclen);
+
+ (*rcbuf_ptr)->len = srclen;
+ (*rcbuf_ptr)->base[srclen] = '\0';
+
+ return 0;
+}
+
+/*
+ * Frees |rcbuf| itself, regardless of its reference cout.
+ */
+void nghttp2_rcbuf_del(nghttp2_rcbuf *rcbuf) {
+ nghttp2_mem_free2(rcbuf->free, rcbuf, rcbuf->mem_user_data);
+}
+
+void nghttp2_rcbuf_incref(nghttp2_rcbuf *rcbuf) {
+ if (rcbuf->ref == -1) {
+ return;
+ }
+
+ ++rcbuf->ref;
+}
+
+void nghttp2_rcbuf_decref(nghttp2_rcbuf *rcbuf) {
+ if (rcbuf == NULL || rcbuf->ref == -1) {
+ return;
+ }
+
+ assert(rcbuf->ref > 0);
+
+ if (--rcbuf->ref == 0) {
+ nghttp2_rcbuf_del(rcbuf);
+ }
+}
+
+nghttp2_vec nghttp2_rcbuf_get_buf(nghttp2_rcbuf *rcbuf) {
+ nghttp2_vec res = {rcbuf->base, rcbuf->len};
+ return res;
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_session.h"
+
+#include <string.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <assert.h>
+#include <stdarg.h>
+
+#include "nghttp2_helper.h"
+#include "nghttp2_net.h"
+#include "nghttp2_priority_spec.h"
+#include "nghttp2_option.h"
+#include "nghttp2_http.h"
+#include "nghttp2_pq.h"
+
+/*
+ * Returns non-zero if the number of outgoing opened streams is larger
+ * than or equal to
+ * remote_settings.max_concurrent_streams.
+ */
+static int
+session_is_outgoing_concurrent_streams_max(nghttp2_session *session) {
+ return session->remote_settings.max_concurrent_streams <=
+ session->num_outgoing_streams;
+}
+
+/*
+ * Returns non-zero if the number of incoming opened streams is larger
+ * than or equal to
+ * local_settings.max_concurrent_streams.
+ */
+static int
+session_is_incoming_concurrent_streams_max(nghttp2_session *session) {
+ return session->local_settings.max_concurrent_streams <=
+ session->num_incoming_streams;
+}
+
+/*
+ * Returns non-zero if the number of incoming opened streams is larger
+ * than or equal to
+ * session->pending_local_max_concurrent_stream.
+ */
+static int
+session_is_incoming_concurrent_streams_pending_max(nghttp2_session *session) {
+ return session->pending_local_max_concurrent_stream <=
+ session->num_incoming_streams;
+}
+
+/*
+ * Returns non-zero if |lib_error| is non-fatal error.
+ */
+static int is_non_fatal(int lib_error_code) {
+ return lib_error_code < 0 && lib_error_code > NGHTTP2_ERR_FATAL;
+}
+
+int nghttp2_is_fatal(int lib_error_code) {
+ return lib_error_code < NGHTTP2_ERR_FATAL;
+}
+
+static int session_enforce_http_messaging(nghttp2_session *session) {
+ return (session->opt_flags & NGHTTP2_OPTMASK_NO_HTTP_MESSAGING) == 0;
+}
+
+/*
+ * Returns nonzero if |frame| is trailer headers.
+ */
+static int session_trailer_headers(nghttp2_session *session,
+ nghttp2_stream *stream,
+ nghttp2_frame *frame) {
+ if (!stream || frame->hd.type != NGHTTP2_HEADERS) {
+ return 0;
+ }
+ if (session->server) {
+ return frame->headers.cat == NGHTTP2_HCAT_HEADERS;
+ }
+
+ return frame->headers.cat == NGHTTP2_HCAT_HEADERS &&
+ (stream->http_flags & NGHTTP2_HTTP_FLAG_EXPECT_FINAL_RESPONSE) == 0;
+}
+
+/* Returns nonzero if the |stream| is in reserved(remote) state */
+static int state_reserved_remote(nghttp2_session *session,
+ nghttp2_stream *stream) {
+ return stream->state == NGHTTP2_STREAM_RESERVED &&
+ !nghttp2_session_is_my_stream_id(session, stream->stream_id);
+}
+
+/* Returns nonzero if the |stream| is in reserved(local) state */
+static int state_reserved_local(nghttp2_session *session,
+ nghttp2_stream *stream) {
+ return stream->state == NGHTTP2_STREAM_RESERVED &&
+ nghttp2_session_is_my_stream_id(session, stream->stream_id);
+}
+
+/*
+ * Checks whether received stream_id is valid. This function returns
+ * 1 if it succeeds, or 0.
+ */
+static int session_is_new_peer_stream_id(nghttp2_session *session,
+ int32_t stream_id) {
+ return stream_id != 0 &&
+ !nghttp2_session_is_my_stream_id(session, stream_id) &&
+ session->last_recv_stream_id < stream_id;
+}
+
+static int session_detect_idle_stream(nghttp2_session *session,
+ int32_t stream_id) {
+ /* Assume that stream object with stream_id does not exist */
+ if (nghttp2_session_is_my_stream_id(session, stream_id)) {
+ if (session->last_sent_stream_id < stream_id) {
+ return 1;
+ }
+ return 0;
+ }
+ if (session_is_new_peer_stream_id(session, stream_id)) {
+ return 1;
+ }
+ return 0;
+}
+
+static int check_ext_type_set(const uint8_t *ext_types, uint8_t type) {
+ return (ext_types[type / 8] & (1 << (type & 0x7))) > 0;
+}
+
+static int session_call_error_callback(nghttp2_session *session,
+ const char *fmt, ...) {
+ size_t bufsize;
+ va_list ap;
+ char *buf;
+ int rv;
+ nghttp2_mem *mem;
+
+ if (!session->callbacks.error_callback) {
+ return 0;
+ }
+
+ mem = &session->mem;
+
+ va_start(ap, fmt);
+ rv = vsnprintf(NULL, 0, fmt, ap);
+ va_end(ap);
+
+ if (rv < 0) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ bufsize = (size_t)(rv + 1);
+
+ buf = nghttp2_mem_malloc(mem, bufsize);
+ if (buf == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ va_start(ap, fmt);
+ rv = vsnprintf(buf, bufsize, fmt, ap);
+ va_end(ap);
+
+ if (rv < 0) {
+ nghttp2_mem_free(mem, buf);
+ /* vsnprintf may return error because of various things we can
+ imagine, but typically we don't want to drop session just for
+ debug callback. */
+ DEBUGF(fprintf(stderr,
+ "error_callback: vsnprintf failed. The template was %s\n",
+ fmt));
+ return 0;
+ }
+
+ rv = session->callbacks.error_callback(session, buf, (size_t)rv,
+ session->user_data);
+
+ nghttp2_mem_free(mem, buf);
+
+ if (rv != 0) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+
+ return 0;
+}
+
+static int session_terminate_session(nghttp2_session *session,
+ int32_t last_stream_id,
+ uint32_t error_code, const char *reason) {
+ int rv;
+ const uint8_t *debug_data;
+ size_t debug_datalen;
+
+ if (session->goaway_flags & NGHTTP2_GOAWAY_TERM_ON_SEND) {
+ return 0;
+ }
+
+ if (reason == NULL) {
+ debug_data = NULL;
+ debug_datalen = 0;
+ } else {
+ debug_data = (const uint8_t *)reason;
+ debug_datalen = strlen(reason);
+ }
+
+ rv = nghttp2_session_add_goaway(session, last_stream_id, error_code,
+ debug_data, debug_datalen,
+ NGHTTP2_GOAWAY_AUX_TERM_ON_SEND);
+
+ if (rv != 0) {
+ return rv;
+ }
+
+ session->goaway_flags |= NGHTTP2_GOAWAY_TERM_ON_SEND;
+
+ return 0;
+}
+
+int nghttp2_session_terminate_session(nghttp2_session *session,
+ uint32_t error_code) {
+ return session_terminate_session(session, session->last_proc_stream_id,
+ error_code, NULL);
+}
+
+int nghttp2_session_terminate_session2(nghttp2_session *session,
+ int32_t last_stream_id,
+ uint32_t error_code) {
+ return session_terminate_session(session, last_stream_id, error_code, NULL);
+}
+
+int nghttp2_session_terminate_session_with_reason(nghttp2_session *session,
+ uint32_t error_code,
+ const char *reason) {
+ return session_terminate_session(session, session->last_proc_stream_id,
+ error_code, reason);
+}
+
+int nghttp2_session_is_my_stream_id(nghttp2_session *session,
+ int32_t stream_id) {
+ int rem;
+ if (stream_id == 0) {
+ return 0;
+ }
+ rem = stream_id & 0x1;
+ if (session->server) {
+ return rem == 0;
+ }
+ return rem == 1;
+}
+
+nghttp2_stream *nghttp2_session_get_stream(nghttp2_session *session,
+ int32_t stream_id) {
+ nghttp2_stream *stream;
+
+ stream = (nghttp2_stream *)nghttp2_map_find(&session->streams, stream_id);
+
+ if (stream == NULL || (stream->flags & NGHTTP2_STREAM_FLAG_CLOSED) ||
+ stream->state == NGHTTP2_STREAM_IDLE) {
+ return NULL;
+ }
+
+ return stream;
+}
+
+nghttp2_stream *nghttp2_session_get_stream_raw(nghttp2_session *session,
+ int32_t stream_id) {
+ return (nghttp2_stream *)nghttp2_map_find(&session->streams, stream_id);
+}
+
+static void session_inbound_frame_reset(nghttp2_session *session) {
+ nghttp2_inbound_frame *iframe = &session->iframe;
+ nghttp2_mem *mem = &session->mem;
+ /* A bit risky code, since if this function is called from
+ nghttp2_session_new(), we rely on the fact that
+ iframe->frame.hd.type is 0, so that no free is performed. */
+ switch (iframe->frame.hd.type) {
+ case NGHTTP2_DATA:
+ break;
+ case NGHTTP2_HEADERS:
+ nghttp2_frame_headers_free(&iframe->frame.headers, mem);
+ break;
+ case NGHTTP2_PRIORITY:
+ nghttp2_frame_priority_free(&iframe->frame.priority);
+ break;
+ case NGHTTP2_RST_STREAM:
+ nghttp2_frame_rst_stream_free(&iframe->frame.rst_stream);
+ break;
+ case NGHTTP2_SETTINGS:
+ nghttp2_frame_settings_free(&iframe->frame.settings, mem);
+
+ nghttp2_mem_free(mem, iframe->iv);
+
+ iframe->iv = NULL;
+ iframe->niv = 0;
+ iframe->max_niv = 0;
+
+ break;
+ case NGHTTP2_PUSH_PROMISE:
+ nghttp2_frame_push_promise_free(&iframe->frame.push_promise, mem);
+ break;
+ case NGHTTP2_PING:
+ nghttp2_frame_ping_free(&iframe->frame.ping);
+ break;
+ case NGHTTP2_GOAWAY:
+ nghttp2_frame_goaway_free(&iframe->frame.goaway, mem);
+ break;
+ case NGHTTP2_WINDOW_UPDATE:
+ nghttp2_frame_window_update_free(&iframe->frame.window_update);
+ break;
+ default:
+ /* extension frame */
+ if (check_ext_type_set(session->user_recv_ext_types,
+ iframe->frame.hd.type)) {
+ nghttp2_frame_extension_free(&iframe->frame.ext);
+ } else {
+ switch (iframe->frame.hd.type) {
+ case NGHTTP2_ALTSVC:
+ if ((session->builtin_recv_ext_types & NGHTTP2_TYPEMASK_ALTSVC) == 0) {
+ break;
+ }
+ nghttp2_frame_altsvc_free(&iframe->frame.ext, mem);
+ break;
+ }
+ }
+
+ break;
+ }
+
+ memset(&iframe->frame, 0, sizeof(nghttp2_frame));
+ memset(&iframe->ext_frame_payload, 0, sizeof(nghttp2_ext_frame_payload));
+
+ iframe->state = NGHTTP2_IB_READ_HEAD;
+
+ nghttp2_buf_wrap_init(&iframe->sbuf, iframe->raw_sbuf,
+ sizeof(iframe->raw_sbuf));
+ iframe->sbuf.mark += NGHTTP2_FRAME_HDLEN;
+
+ nghttp2_buf_free(&iframe->lbuf, mem);
+ nghttp2_buf_wrap_init(&iframe->lbuf, NULL, 0);
+
+ iframe->raw_lbuf = NULL;
+
+ iframe->payloadleft = 0;
+ iframe->padlen = 0;
+}
+
+static void init_settings(nghttp2_settings_storage *settings) {
+ settings->header_table_size = NGHTTP2_HD_DEFAULT_MAX_BUFFER_SIZE;
+ settings->enable_push = 1;
+ settings->max_concurrent_streams = NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS;
+ settings->initial_window_size = NGHTTP2_INITIAL_WINDOW_SIZE;
+ settings->max_frame_size = NGHTTP2_MAX_FRAME_SIZE_MIN;
+ settings->max_header_list_size = UINT32_MAX;
+}
+
+static void active_outbound_item_reset(nghttp2_active_outbound_item *aob,
+ nghttp2_mem *mem) {
+ DEBUGF(fprintf(stderr, "send: reset nghttp2_active_outbound_item\n"));
+ DEBUGF(fprintf(stderr, "send: aob->item = %p\n", aob->item));
+ nghttp2_outbound_item_free(aob->item, mem);
+ nghttp2_mem_free(mem, aob->item);
+ aob->item = NULL;
+ nghttp2_bufs_reset(&aob->framebufs);
+ aob->state = NGHTTP2_OB_POP_ITEM;
+}
+
+int nghttp2_enable_strict_preface = 1;
+
+static int session_new(nghttp2_session **session_ptr,
+ const nghttp2_session_callbacks *callbacks,
+ void *user_data, int server,
+ const nghttp2_option *option, nghttp2_mem *mem) {
+ int rv;
+ size_t nbuffer;
+
+ if (mem == NULL) {
+ mem = nghttp2_mem_default();
+ }
+
+ *session_ptr = nghttp2_mem_calloc(mem, 1, sizeof(nghttp2_session));
+ if (*session_ptr == NULL) {
+ rv = NGHTTP2_ERR_NOMEM;
+ goto fail_session;
+ }
+
+ (*session_ptr)->mem = *mem;
+ mem = &(*session_ptr)->mem;
+
+ /* next_stream_id is initialized in either
+ nghttp2_session_client_new2 or nghttp2_session_server_new2 */
+
+ rv = nghttp2_hd_deflate_init(&(*session_ptr)->hd_deflater, mem);
+ if (rv != 0) {
+ goto fail_hd_deflater;
+ }
+ rv = nghttp2_hd_inflate_init(&(*session_ptr)->hd_inflater, mem);
+ if (rv != 0) {
+ goto fail_hd_inflater;
+ }
+ rv = nghttp2_map_init(&(*session_ptr)->streams, mem);
+ if (rv != 0) {
+ goto fail_map;
+ }
+
+ nghttp2_stream_init(&(*session_ptr)->root, 0, NGHTTP2_STREAM_FLAG_NONE,
+ NGHTTP2_STREAM_IDLE, NGHTTP2_DEFAULT_WEIGHT, 0, 0, NULL,
+ mem);
+
+ (*session_ptr)->remote_window_size = NGHTTP2_INITIAL_CONNECTION_WINDOW_SIZE;
+ (*session_ptr)->recv_window_size = 0;
+ (*session_ptr)->consumed_size = 0;
+ (*session_ptr)->recv_reduction = 0;
+ (*session_ptr)->local_window_size = NGHTTP2_INITIAL_CONNECTION_WINDOW_SIZE;
+
+ (*session_ptr)->goaway_flags = NGHTTP2_GOAWAY_NONE;
+ (*session_ptr)->local_last_stream_id = (1u << 31) - 1;
+ (*session_ptr)->remote_last_stream_id = (1u << 31) - 1;
+
+ (*session_ptr)->pending_local_max_concurrent_stream =
+ NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS;
+ (*session_ptr)->pending_enable_push = 1;
+
+ if (server) {
+ (*session_ptr)->server = 1;
+ }
+
+ init_settings(&(*session_ptr)->remote_settings);
+ init_settings(&(*session_ptr)->local_settings);
+
+ (*session_ptr)->max_incoming_reserved_streams =
+ NGHTTP2_MAX_INCOMING_RESERVED_STREAMS;
+
+ /* Limit max outgoing concurrent streams to sensible value */
+ (*session_ptr)->remote_settings.max_concurrent_streams = 100;
+
+ (*session_ptr)->max_send_header_block_length = NGHTTP2_MAX_HEADERSLEN;
+
+ if (option) {
+ if ((option->opt_set_mask & NGHTTP2_OPT_NO_AUTO_WINDOW_UPDATE) &&
+ option->no_auto_window_update) {
+
+ (*session_ptr)->opt_flags |= NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE;
+ }
+
+ if (option->opt_set_mask & NGHTTP2_OPT_PEER_MAX_CONCURRENT_STREAMS) {
+
+ (*session_ptr)->remote_settings.max_concurrent_streams =
+ option->peer_max_concurrent_streams;
+ }
+
+ if (option->opt_set_mask & NGHTTP2_OPT_MAX_RESERVED_REMOTE_STREAMS) {
+
+ (*session_ptr)->max_incoming_reserved_streams =
+ option->max_reserved_remote_streams;
+ }
+
+ if ((option->opt_set_mask & NGHTTP2_OPT_NO_RECV_CLIENT_MAGIC) &&
+ option->no_recv_client_magic) {
+
+ (*session_ptr)->opt_flags |= NGHTTP2_OPTMASK_NO_RECV_CLIENT_MAGIC;
+ }
+
+ if ((option->opt_set_mask & NGHTTP2_OPT_NO_HTTP_MESSAGING) &&
+ option->no_http_messaging) {
+
+ (*session_ptr)->opt_flags |= NGHTTP2_OPTMASK_NO_HTTP_MESSAGING;
+ }
+
+ if (option->opt_set_mask & NGHTTP2_OPT_USER_RECV_EXT_TYPES) {
+ memcpy((*session_ptr)->user_recv_ext_types, option->user_recv_ext_types,
+ sizeof((*session_ptr)->user_recv_ext_types));
+ }
+
+ if (option->opt_set_mask & NGHTTP2_OPT_BUILTIN_RECV_EXT_TYPES) {
+ (*session_ptr)->builtin_recv_ext_types = option->builtin_recv_ext_types;
+ }
+
+ if ((option->opt_set_mask & NGHTTP2_OPT_NO_AUTO_PING_ACK) &&
+ option->no_auto_ping_ack) {
+ (*session_ptr)->opt_flags |= NGHTTP2_OPTMASK_NO_AUTO_PING_ACK;
+ }
+
+ if (option->opt_set_mask & NGHTTP2_OPT_MAX_SEND_HEADER_BLOCK_LENGTH) {
+ (*session_ptr)->max_send_header_block_length =
+ option->max_send_header_block_length;
+ }
+ }
+
+ nbuffer = ((*session_ptr)->max_send_header_block_length +
+ NGHTTP2_FRAMEBUF_CHUNKLEN - 1) /
+ NGHTTP2_FRAMEBUF_CHUNKLEN;
+
+ if (nbuffer == 0) {
+ nbuffer = 1;
+ }
+
+ /* 1 for Pad Field. */
+ rv = nghttp2_bufs_init3(&(*session_ptr)->aob.framebufs,
+ NGHTTP2_FRAMEBUF_CHUNKLEN, nbuffer, 1,
+ NGHTTP2_FRAME_HDLEN + 1, mem);
+ if (rv != 0) {
+ goto fail_aob_framebuf;
+ }
+
+ active_outbound_item_reset(&(*session_ptr)->aob, mem);
+
+ (*session_ptr)->callbacks = *callbacks;
+ (*session_ptr)->user_data = user_data;
+
+ session_inbound_frame_reset(*session_ptr);
+
+ if (nghttp2_enable_strict_preface) {
+ nghttp2_inbound_frame *iframe = &(*session_ptr)->iframe;
+
+ if (server &&
+ ((*session_ptr)->opt_flags & NGHTTP2_OPTMASK_NO_RECV_CLIENT_MAGIC) ==
+ 0) {
+ iframe->state = NGHTTP2_IB_READ_CLIENT_MAGIC;
+ iframe->payloadleft = NGHTTP2_CLIENT_MAGIC_LEN;
+ } else {
+ iframe->state = NGHTTP2_IB_READ_FIRST_SETTINGS;
+ }
+
+ if (!server) {
+ (*session_ptr)->aob.state = NGHTTP2_OB_SEND_CLIENT_MAGIC;
+ nghttp2_bufs_add(&(*session_ptr)->aob.framebufs, NGHTTP2_CLIENT_MAGIC,
+ NGHTTP2_CLIENT_MAGIC_LEN);
+ }
+ }
+
+ return 0;
+
+fail_aob_framebuf:
+ nghttp2_map_free(&(*session_ptr)->streams);
+fail_map:
+ nghttp2_hd_inflate_free(&(*session_ptr)->hd_inflater);
+fail_hd_inflater:
+ nghttp2_hd_deflate_free(&(*session_ptr)->hd_deflater);
+fail_hd_deflater:
+ nghttp2_mem_free(mem, *session_ptr);
+fail_session:
+ return rv;
+}
+
+int nghttp2_session_client_new(nghttp2_session **session_ptr,
+ const nghttp2_session_callbacks *callbacks,
+ void *user_data) {
+ return nghttp2_session_client_new3(session_ptr, callbacks, user_data, NULL,
+ NULL);
+}
+
+int nghttp2_session_client_new2(nghttp2_session **session_ptr,
+ const nghttp2_session_callbacks *callbacks,
+ void *user_data, const nghttp2_option *option) {
+ return nghttp2_session_client_new3(session_ptr, callbacks, user_data, option,
+ NULL);
+}
+
+int nghttp2_session_client_new3(nghttp2_session **session_ptr,
+ const nghttp2_session_callbacks *callbacks,
+ void *user_data, const nghttp2_option *option,
+ nghttp2_mem *mem) {
+ int rv;
+ nghttp2_session *session;
+
+ rv = session_new(&session, callbacks, user_data, 0, option, mem);
+
+ if (rv != 0) {
+ return rv;
+ }
+ /* IDs for use in client */
+ session->next_stream_id = 1;
+
+ *session_ptr = session;
+
+ return 0;
+}
+
+int nghttp2_session_server_new(nghttp2_session **session_ptr,
+ const nghttp2_session_callbacks *callbacks,
+ void *user_data) {
+ return nghttp2_session_server_new3(session_ptr, callbacks, user_data, NULL,
+ NULL);
+}
+
+int nghttp2_session_server_new2(nghttp2_session **session_ptr,
+ const nghttp2_session_callbacks *callbacks,
+ void *user_data, const nghttp2_option *option) {
+ return nghttp2_session_server_new3(session_ptr, callbacks, user_data, option,
+ NULL);
+}
+
+int nghttp2_session_server_new3(nghttp2_session **session_ptr,
+ const nghttp2_session_callbacks *callbacks,
+ void *user_data, const nghttp2_option *option,
+ nghttp2_mem *mem) {
+ int rv;
+ nghttp2_session *session;
+
+ rv = session_new(&session, callbacks, user_data, 1, option, mem);
+
+ if (rv != 0) {
+ return rv;
+ }
+ /* IDs for use in client */
+ session->next_stream_id = 2;
+
+ *session_ptr = session;
+
+ return 0;
+}
+
+static int free_streams(nghttp2_map_entry *entry, void *ptr) {
+ nghttp2_session *session;
+ nghttp2_stream *stream;
+ nghttp2_outbound_item *item;
+ nghttp2_mem *mem;
+
+ session = (nghttp2_session *)ptr;
+ mem = &session->mem;
+ stream = (nghttp2_stream *)entry;
+ item = stream->item;
+
+ if (item && !item->queued && item != session->aob.item) {
+ nghttp2_outbound_item_free(item, mem);
+ nghttp2_mem_free(mem, item);
+ }
+
+ nghttp2_stream_free(stream);
+ nghttp2_mem_free(mem, stream);
+
+ return 0;
+}
+
+static void ob_q_free(nghttp2_outbound_queue *q, nghttp2_mem *mem) {
+ nghttp2_outbound_item *item, *next;
+ for (item = q->head; item;) {
+ next = item->qnext;
+ nghttp2_outbound_item_free(item, mem);
+ nghttp2_mem_free(mem, item);
+ item = next;
+ }
+}
+
+static int inflight_settings_new(nghttp2_inflight_settings **settings_ptr,
+ const nghttp2_settings_entry *iv, size_t niv,
+ nghttp2_mem *mem) {
+ *settings_ptr = nghttp2_mem_malloc(mem, sizeof(nghttp2_inflight_settings));
+ if (!*settings_ptr) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ if (niv > 0) {
+ (*settings_ptr)->iv = nghttp2_frame_iv_copy(iv, niv, mem);
+ if (!(*settings_ptr)->iv) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+ } else {
+ (*settings_ptr)->iv = NULL;
+ }
+
+ (*settings_ptr)->niv = niv;
+ (*settings_ptr)->next = NULL;
+
+ return 0;
+}
+
+static void inflight_settings_del(nghttp2_inflight_settings *settings,
+ nghttp2_mem *mem) {
+ if (!settings) {
+ return;
+ }
+
+ nghttp2_mem_free(mem, settings->iv);
+ nghttp2_mem_free(mem, settings);
+}
+
+void nghttp2_session_del(nghttp2_session *session) {
+ nghttp2_mem *mem;
+ nghttp2_inflight_settings *settings;
+
+ if (session == NULL) {
+ return;
+ }
+
+ mem = &session->mem;
+
+ for (settings = session->inflight_settings_head; settings;) {
+ nghttp2_inflight_settings *next = settings->next;
+ inflight_settings_del(settings, mem);
+ settings = next;
+ }
+
+ nghttp2_stream_free(&session->root);
+
+ /* Have to free streams first, so that we can check
+ stream->item->queued */
+ nghttp2_map_each_free(&session->streams, free_streams, session);
+ nghttp2_map_free(&session->streams);
+
+ ob_q_free(&session->ob_urgent, mem);
+ ob_q_free(&session->ob_reg, mem);
+ ob_q_free(&session->ob_syn, mem);
+
+ active_outbound_item_reset(&session->aob, mem);
+ session_inbound_frame_reset(session);
+ nghttp2_hd_deflate_free(&session->hd_deflater);
+ nghttp2_hd_inflate_free(&session->hd_inflater);
+ nghttp2_bufs_free(&session->aob.framebufs);
+ nghttp2_mem_free(mem, session);
+}
+
+int nghttp2_session_reprioritize_stream(
+ nghttp2_session *session, nghttp2_stream *stream,
+ const nghttp2_priority_spec *pri_spec_in) {
+ int rv;
+ nghttp2_stream *dep_stream = NULL;
+ nghttp2_priority_spec pri_spec_default;
+ const nghttp2_priority_spec *pri_spec = pri_spec_in;
+
+ assert(pri_spec->stream_id != stream->stream_id);
+
+ if (!nghttp2_stream_in_dep_tree(stream)) {
+ return 0;
+ }
+
+ if (pri_spec->stream_id != 0) {
+ dep_stream = nghttp2_session_get_stream_raw(session, pri_spec->stream_id);
+
+ if (!dep_stream &&
+ session_detect_idle_stream(session, pri_spec->stream_id)) {
+
+ nghttp2_priority_spec_default_init(&pri_spec_default);
+
+ dep_stream = nghttp2_session_open_stream(
+ session, pri_spec->stream_id, NGHTTP2_FLAG_NONE, &pri_spec_default,
+ NGHTTP2_STREAM_IDLE, NULL);
+
+ if (dep_stream == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+ } else if (!dep_stream || !nghttp2_stream_in_dep_tree(dep_stream)) {
+ nghttp2_priority_spec_default_init(&pri_spec_default);
+ pri_spec = &pri_spec_default;
+ }
+ }
+
+ if (pri_spec->stream_id == 0) {
+ dep_stream = &session->root;
+ } else if (nghttp2_stream_dep_find_ancestor(dep_stream, stream)) {
+ DEBUGF(fprintf(stderr, "stream: cycle detected, dep_stream(%p)=%d "
+ "stream(%p)=%d\n",
+ dep_stream, dep_stream->stream_id, stream,
+ stream->stream_id));
+
+ nghttp2_stream_dep_remove_subtree(dep_stream);
+ rv = nghttp2_stream_dep_add_subtree(stream->dep_prev, dep_stream);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+
+ assert(dep_stream);
+
+ if (dep_stream == stream->dep_prev && !pri_spec->exclusive) {
+ /* This is minor optimization when just weight is changed. */
+ nghttp2_stream_change_weight(stream, pri_spec->weight);
+
+ return 0;
+ }
+
+ nghttp2_stream_dep_remove_subtree(stream);
+
+ /* We have to update weight after removing stream from tree */
+ stream->weight = pri_spec->weight;
+
+ if (pri_spec->exclusive) {
+ rv = nghttp2_stream_dep_insert_subtree(dep_stream, stream);
+ } else {
+ rv = nghttp2_stream_dep_add_subtree(dep_stream, stream);
+ }
+
+ if (rv != 0) {
+ return rv;
+ }
+
+ return 0;
+}
+
+int nghttp2_session_add_item(nghttp2_session *session,
+ nghttp2_outbound_item *item) {
+ /* TODO Return error if stream is not found for the frame requiring
+ stream presence. */
+ int rv = 0;
+ nghttp2_stream *stream;
+ nghttp2_frame *frame;
+
+ frame = &item->frame;
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+
+ if (frame->hd.type != NGHTTP2_DATA) {
+
+ switch (frame->hd.type) {
+ case NGHTTP2_HEADERS:
+ /* We push request HEADERS and push response HEADERS to
+ dedicated queue because their transmission is affected by
+ SETTINGS_MAX_CONCURRENT_STREAMS */
+ /* TODO If 2 HEADERS are submitted for reserved stream, then
+ both of them are queued into ob_syn, which is not
+ desirable. */
+ if (frame->headers.cat == NGHTTP2_HCAT_REQUEST ||
+ (stream && stream->state == NGHTTP2_STREAM_RESERVED)) {
+ nghttp2_outbound_queue_push(&session->ob_syn, item);
+ item->queued = 1;
+ break;
+ }
+
+ nghttp2_outbound_queue_push(&session->ob_reg, item);
+ item->queued = 1;
+ break;
+ case NGHTTP2_SETTINGS:
+ case NGHTTP2_PING:
+ nghttp2_outbound_queue_push(&session->ob_urgent, item);
+ item->queued = 1;
+ break;
+ case NGHTTP2_RST_STREAM:
+ if (stream) {
+ stream->state = NGHTTP2_STREAM_CLOSING;
+ }
+ nghttp2_outbound_queue_push(&session->ob_reg, item);
+ item->queued = 1;
+ break;
+ case NGHTTP2_PUSH_PROMISE: {
+ nghttp2_headers_aux_data *aux_data;
+ nghttp2_priority_spec pri_spec;
+
+ aux_data = &item->aux_data.headers;
+
+ if (!stream) {
+ return NGHTTP2_ERR_STREAM_CLOSED;
+ }
+
+ nghttp2_priority_spec_init(&pri_spec, stream->stream_id,
+ NGHTTP2_DEFAULT_WEIGHT, 0);
+
+ if (!nghttp2_session_open_stream(
+ session, frame->push_promise.promised_stream_id,
+ NGHTTP2_STREAM_FLAG_NONE, &pri_spec, NGHTTP2_STREAM_RESERVED,
+ aux_data->stream_user_data)) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ /* We don't have to call nghttp2_session_adjust_closed_stream()
+ here, since stream->stream_id is local stream_id, and it does
+ not affect closed stream count. */
+
+ nghttp2_outbound_queue_push(&session->ob_reg, item);
+ item->queued = 1;
+
+ break;
+ }
+ case NGHTTP2_WINDOW_UPDATE:
+ if (stream) {
+ stream->window_update_queued = 1;
+ } else if (frame->hd.stream_id == 0) {
+ session->window_update_queued = 1;
+ }
+ nghttp2_outbound_queue_push(&session->ob_reg, item);
+ item->queued = 1;
+ break;
+ default:
+ nghttp2_outbound_queue_push(&session->ob_reg, item);
+ item->queued = 1;
+ }
+
+ return 0;
+ }
+
+ if (!stream) {
+ return NGHTTP2_ERR_STREAM_CLOSED;
+ }
+
+ if (stream->item) {
+ return NGHTTP2_ERR_DATA_EXIST;
+ }
+
+ rv = nghttp2_stream_attach_item(stream, item);
+
+ if (rv != 0) {
+ return rv;
+ }
+
+ return 0;
+}
+
+int nghttp2_session_add_rst_stream(nghttp2_session *session, int32_t stream_id,
+ uint32_t error_code) {
+ int rv;
+ nghttp2_outbound_item *item;
+ nghttp2_frame *frame;
+ nghttp2_stream *stream;
+ nghttp2_mem *mem;
+
+ mem = &session->mem;
+ stream = nghttp2_session_get_stream(session, stream_id);
+ if (stream && stream->state == NGHTTP2_STREAM_CLOSING) {
+ return 0;
+ }
+
+ /* Cancel pending request HEADERS in ob_syn if this RST_STREAM
+ refers to that stream. */
+ if (!session->server && nghttp2_session_is_my_stream_id(session, stream_id) &&
+ nghttp2_outbound_queue_top(&session->ob_syn)) {
+ nghttp2_headers_aux_data *aux_data;
+ nghttp2_frame *headers_frame;
+
+ headers_frame = &nghttp2_outbound_queue_top(&session->ob_syn)->frame;
+ assert(headers_frame->hd.type == NGHTTP2_HEADERS);
+
+ if (headers_frame->hd.stream_id <= stream_id &&
+ (uint32_t)stream_id < session->next_stream_id) {
+
+ for (item = session->ob_syn.head; item; item = item->qnext) {
+ aux_data = &item->aux_data.headers;
+
+ if (item->frame.hd.stream_id < stream_id) {
+ continue;
+ }
+
+ /* stream_id in ob_syn queue must be strictly increasing. If
+ we found larger ID, then we can break here. */
+ if (item->frame.hd.stream_id > stream_id || aux_data->canceled) {
+ break;
+ }
+
+ aux_data->error_code = error_code;
+ aux_data->canceled = 1;
+
+ return 0;
+ }
+ }
+ }
+
+ item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
+ if (item == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ nghttp2_outbound_item_init(item);
+
+ frame = &item->frame;
+
+ nghttp2_frame_rst_stream_init(&frame->rst_stream, stream_id, error_code);
+ rv = nghttp2_session_add_item(session, item);
+ if (rv != 0) {
+ nghttp2_frame_rst_stream_free(&frame->rst_stream);
+ nghttp2_mem_free(mem, item);
+ return rv;
+ }
+ return 0;
+}
+
+nghttp2_stream *nghttp2_session_open_stream(nghttp2_session *session,
+ int32_t stream_id, uint8_t flags,
+ nghttp2_priority_spec *pri_spec_in,
+ nghttp2_stream_state initial_state,
+ void *stream_user_data) {
+ int rv;
+ nghttp2_stream *stream;
+ nghttp2_stream *dep_stream = NULL;
+ int stream_alloc = 0;
+ nghttp2_priority_spec pri_spec_default;
+ nghttp2_priority_spec *pri_spec = pri_spec_in;
+ nghttp2_mem *mem;
+
+ mem = &session->mem;
+ stream = nghttp2_session_get_stream_raw(session, stream_id);
+
+ if (stream) {
+ assert(stream->state == NGHTTP2_STREAM_IDLE);
+ assert(nghttp2_stream_in_dep_tree(stream));
+ nghttp2_session_detach_idle_stream(session, stream);
+ rv = nghttp2_stream_dep_remove(stream);
+ if (rv != 0) {
+ return NULL;
+ }
+ } else {
+ stream = nghttp2_mem_malloc(mem, sizeof(nghttp2_stream));
+ if (stream == NULL) {
+ return NULL;
+ }
+
+ stream_alloc = 1;
+ }
+
+ if (pri_spec->stream_id != 0) {
+ dep_stream = nghttp2_session_get_stream_raw(session, pri_spec->stream_id);
+
+ if (!dep_stream &&
+ session_detect_idle_stream(session, pri_spec->stream_id)) {
+ /* Depends on idle stream, which does not exist in memory.
+ Assign default priority for it. */
+ nghttp2_priority_spec_default_init(&pri_spec_default);
+
+ dep_stream = nghttp2_session_open_stream(
+ session, pri_spec->stream_id, NGHTTP2_FLAG_NONE, &pri_spec_default,
+ NGHTTP2_STREAM_IDLE, NULL);
+
+ if (dep_stream == NULL) {
+ if (stream_alloc) {
+ nghttp2_mem_free(mem, stream);
+ }
+
+ return NULL;
+ }
+ } else if (!dep_stream || !nghttp2_stream_in_dep_tree(dep_stream)) {
+ /* If dep_stream is not part of dependency tree, stream will get
+ default priority. This handles the case when
+ pri_spec->stream_id == stream_id. This happens because we
+ don't check pri_spec->stream_id against new stream ID in
+ nghttp2_submit_request. This also handles the case when idle
+ stream created by PRIORITY frame was opened. Somehow we
+ first remove the idle stream from dependency tree. This is
+ done to simplify code base, but ideally we should retain old
+ dependency. But I'm not sure this adds values. */
+ nghttp2_priority_spec_default_init(&pri_spec_default);
+ pri_spec = &pri_spec_default;
+ }
+ }
+
+ if (initial_state == NGHTTP2_STREAM_RESERVED) {
+ flags |= NGHTTP2_STREAM_FLAG_PUSH;
+ }
+
+ nghttp2_stream_init(stream, stream_id, flags, initial_state, pri_spec->weight,
+ (int32_t)session->remote_settings.initial_window_size,
+ (int32_t)session->local_settings.initial_window_size,
+ stream_user_data, mem);
+
+ if (stream_alloc) {
+ rv = nghttp2_map_insert(&session->streams, &stream->map_entry);
+ if (rv != 0) {
+ nghttp2_mem_free(mem, stream);
+ return NULL;
+ }
+ }
+
+ switch (initial_state) {
+ case NGHTTP2_STREAM_RESERVED:
+ if (nghttp2_session_is_my_stream_id(session, stream_id)) {
+ /* reserved (local) */
+ nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_RD);
+ } else {
+ /* reserved (remote) */
+ nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_WR);
+ ++session->num_incoming_reserved_streams;
+ }
+ /* Reserved stream does not count in the concurrent streams
+ limit. That is one of the DOS vector. */
+ break;
+ case NGHTTP2_STREAM_IDLE:
+ /* Idle stream does not count toward the concurrent streams limit.
+ This is used as anchor node in dependency tree. */
+ nghttp2_session_keep_idle_stream(session, stream);
+ break;
+ default:
+ if (nghttp2_session_is_my_stream_id(session, stream_id)) {
+ ++session->num_outgoing_streams;
+ } else {
+ ++session->num_incoming_streams;
+ }
+ }
+
+ if (pri_spec->stream_id == 0) {
+ dep_stream = &session->root;
+ }
+
+ assert(dep_stream);
+
+ if (pri_spec->exclusive) {
+ rv = nghttp2_stream_dep_insert(dep_stream, stream);
+ if (rv != 0) {
+ return NULL;
+ }
+ } else {
+ nghttp2_stream_dep_add(dep_stream, stream);
+ }
+
+ return stream;
+}
+
+int nghttp2_session_close_stream(nghttp2_session *session, int32_t stream_id,
+ uint32_t error_code) {
+ int rv;
+ nghttp2_stream *stream;
+ nghttp2_mem *mem;
+ int is_my_stream_id;
+
+ mem = &session->mem;
+ stream = nghttp2_session_get_stream(session, stream_id);
+
+ if (!stream) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ DEBUGF(fprintf(stderr, "stream: stream(%p)=%d close\n", stream,
+ stream->stream_id));
+
+ if (stream->item) {
+ nghttp2_outbound_item *item;
+
+ item = stream->item;
+
+ rv = nghttp2_stream_detach_item(stream);
+
+ if (rv != 0) {
+ return rv;
+ }
+
+ /* If item is queued, it will be deleted when it is popped
+ (nghttp2_session_prep_frame() will fail). If session->aob.item
+ points to this item, let active_outbound_item_reset()
+ free the item. */
+ if (!item->queued && item != session->aob.item) {
+ nghttp2_outbound_item_free(item, mem);
+ nghttp2_mem_free(mem, item);
+ }
+ }
+
+ /* We call on_stream_close_callback even if stream->state is
+ NGHTTP2_STREAM_INITIAL. This will happen while sending request
+ HEADERS, a local endpoint receives RST_STREAM for that stream. It
+ may be PROTOCOL_ERROR, but without notifying stream closure will
+ hang the stream in a local endpoint.
+ */
+
+ if (session->callbacks.on_stream_close_callback) {
+ if (session->callbacks.on_stream_close_callback(
+ session, stream_id, error_code, session->user_data) != 0) {
+
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ }
+
+ is_my_stream_id = nghttp2_session_is_my_stream_id(session, stream_id);
+
+ /* pushed streams which is not opened yet is not counted toward max
+ concurrent limits */
+ if ((stream->flags & NGHTTP2_STREAM_FLAG_PUSH)) {
+ if (!is_my_stream_id) {
+ --session->num_incoming_reserved_streams;
+ }
+ } else {
+ if (is_my_stream_id) {
+ --session->num_outgoing_streams;
+ } else {
+ --session->num_incoming_streams;
+ }
+ }
+
+ /* Closes both directions just in case they are not closed yet */
+ stream->flags |= NGHTTP2_STREAM_FLAG_CLOSED;
+
+ if (session->server && !is_my_stream_id &&
+ nghttp2_stream_in_dep_tree(stream)) {
+ /* On server side, retain stream at most MAX_CONCURRENT_STREAMS
+ combined with the current active incoming streams to make
+ dependency tree work better. */
+ nghttp2_session_keep_closed_stream(session, stream);
+ } else {
+ rv = nghttp2_session_destroy_stream(session, stream);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+
+ return 0;
+}
+
+int nghttp2_session_destroy_stream(nghttp2_session *session,
+ nghttp2_stream *stream) {
+ nghttp2_mem *mem;
+ int rv;
+
+ DEBUGF(fprintf(stderr, "stream: destroy closed stream(%p)=%d\n", stream,
+ stream->stream_id));
+
+ mem = &session->mem;
+
+ if (nghttp2_stream_in_dep_tree(stream)) {
+ rv = nghttp2_stream_dep_remove(stream);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+
+ nghttp2_map_remove(&session->streams, stream->stream_id);
+ nghttp2_stream_free(stream);
+ nghttp2_mem_free(mem, stream);
+
+ return 0;
+}
+
+void nghttp2_session_keep_closed_stream(nghttp2_session *session,
+ nghttp2_stream *stream) {
+ DEBUGF(fprintf(stderr, "stream: keep closed stream(%p)=%d, state=%d\n",
+ stream, stream->stream_id, stream->state));
+
+ if (session->closed_stream_tail) {
+ session->closed_stream_tail->closed_next = stream;
+ stream->closed_prev = session->closed_stream_tail;
+ } else {
+ session->closed_stream_head = stream;
+ }
+ session->closed_stream_tail = stream;
+
+ ++session->num_closed_streams;
+}
+
+void nghttp2_session_keep_idle_stream(nghttp2_session *session,
+ nghttp2_stream *stream) {
+ DEBUGF(fprintf(stderr, "stream: keep idle stream(%p)=%d, state=%d\n", stream,
+ stream->stream_id, stream->state));
+
+ if (session->idle_stream_tail) {
+ session->idle_stream_tail->closed_next = stream;
+ stream->closed_prev = session->idle_stream_tail;
+ } else {
+ session->idle_stream_head = stream;
+ }
+ session->idle_stream_tail = stream;
+
+ ++session->num_idle_streams;
+}
+
+void nghttp2_session_detach_idle_stream(nghttp2_session *session,
+ nghttp2_stream *stream) {
+ nghttp2_stream *prev_stream, *next_stream;
+
+ DEBUGF(fprintf(stderr, "stream: detach idle stream(%p)=%d, state=%d\n",
+ stream, stream->stream_id, stream->state));
+
+ prev_stream = stream->closed_prev;
+ next_stream = stream->closed_next;
+
+ if (prev_stream) {
+ prev_stream->closed_next = next_stream;
+ } else {
+ session->idle_stream_head = next_stream;
+ }
+
+ if (next_stream) {
+ next_stream->closed_prev = prev_stream;
+ } else {
+ session->idle_stream_tail = prev_stream;
+ }
+
+ stream->closed_prev = NULL;
+ stream->closed_next = NULL;
+
+ --session->num_idle_streams;
+}
+
+int nghttp2_session_adjust_closed_stream(nghttp2_session *session) {
+ size_t num_stream_max;
+ int rv;
+
+ if (session->local_settings.max_concurrent_streams ==
+ NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS) {
+ num_stream_max = session->pending_local_max_concurrent_stream;
+ } else {
+ num_stream_max = session->local_settings.max_concurrent_streams;
+ }
+
+ DEBUGF(fprintf(stderr, "stream: adjusting kept closed streams "
+ "num_closed_streams=%zu, num_incoming_streams=%zu, "
+ "max_concurrent_streams=%zu\n",
+ session->num_closed_streams, session->num_incoming_streams,
+ num_stream_max));
+
+ while (session->num_closed_streams > 0 &&
+ session->num_closed_streams + session->num_incoming_streams >
+ num_stream_max) {
+ nghttp2_stream *head_stream;
+ nghttp2_stream *next;
+
+ head_stream = session->closed_stream_head;
+
+ assert(head_stream);
+
+ next = head_stream->closed_next;
+
+ rv = nghttp2_session_destroy_stream(session, head_stream);
+ if (rv != 0) {
+ return rv;
+ }
+
+ /* head_stream is now freed */
+
+ session->closed_stream_head = next;
+
+ if (session->closed_stream_head) {
+ session->closed_stream_head->closed_prev = NULL;
+ } else {
+ session->closed_stream_tail = NULL;
+ }
+
+ --session->num_closed_streams;
+ }
+
+ return 0;
+}
+
+int nghttp2_session_adjust_idle_stream(nghttp2_session *session) {
+ size_t max;
+ int rv;
+
+ /* Make minimum number of idle streams 16, and maximum 100, which
+ are arbitrary chosen numbers. */
+ max = nghttp2_min(
+ 100, nghttp2_max(
+ 16, nghttp2_min(session->local_settings.max_concurrent_streams,
+ session->pending_local_max_concurrent_stream)));
+
+ DEBUGF(fprintf(stderr, "stream: adjusting kept idle streams "
+ "num_idle_streams=%zu, max=%zu\n",
+ session->num_idle_streams, max));
+
+ while (session->num_idle_streams > max) {
+ nghttp2_stream *head;
+ nghttp2_stream *next;
+
+ head = session->idle_stream_head;
+ assert(head);
+
+ next = head->closed_next;
+
+ rv = nghttp2_session_destroy_stream(session, head);
+ if (rv != 0) {
+ return rv;
+ }
+
+ /* head is now destroyed */
+
+ session->idle_stream_head = next;
+
+ if (session->idle_stream_head) {
+ session->idle_stream_head->closed_prev = NULL;
+ } else {
+ session->idle_stream_tail = NULL;
+ }
+
+ --session->num_idle_streams;
+ }
+
+ return 0;
+}
+
+/*
+ * Closes stream with stream ID |stream_id| if both transmission and
+ * reception of the stream were disallowed. The |error_code| indicates
+ * the reason of the closure.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_INVALID_ARGUMENT
+ * The stream is not found.
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The callback function failed.
+ */
+int nghttp2_session_close_stream_if_shut_rdwr(nghttp2_session *session,
+ nghttp2_stream *stream) {
+ if ((stream->shut_flags & NGHTTP2_SHUT_RDWR) == NGHTTP2_SHUT_RDWR) {
+ return nghttp2_session_close_stream(session, stream->stream_id,
+ NGHTTP2_NO_ERROR);
+ }
+ return 0;
+}
+
+/*
+ * Returns nonzero if local endpoint allows reception of new stream
+ * from remote.
+ */
+static int session_allow_incoming_new_stream(nghttp2_session *session) {
+ return (session->goaway_flags &
+ (NGHTTP2_GOAWAY_TERM_ON_SEND | NGHTTP2_GOAWAY_SENT)) == 0;
+}
+
+/*
+ * This function returns nonzero if session is closing.
+ */
+static int session_is_closing(nghttp2_session *session) {
+ return (session->goaway_flags & NGHTTP2_GOAWAY_TERM_ON_SEND) != 0 ||
+ (nghttp2_session_want_read(session) == 0 &&
+ nghttp2_session_want_write(session) == 0);
+}
+
+/*
+ * Check that we can send a frame to the |stream|. This function
+ * returns 0 if we can send a frame to the |frame|, or one of the
+ * following negative error codes:
+ *
+ * NGHTTP2_ERR_STREAM_CLOSED
+ * The stream is already closed.
+ * NGHTTP2_ERR_STREAM_SHUT_WR
+ * The stream is half-closed for transmission.
+ * NGHTTP2_ERR_SESSION_CLOSING
+ * This session is closing.
+ */
+static int session_predicate_for_stream_send(nghttp2_session *session,
+ nghttp2_stream *stream) {
+ if (stream == NULL) {
+ return NGHTTP2_ERR_STREAM_CLOSED;
+ }
+ if (session_is_closing(session)) {
+ return NGHTTP2_ERR_SESSION_CLOSING;
+ }
+ if (stream->shut_flags & NGHTTP2_SHUT_WR) {
+ return NGHTTP2_ERR_STREAM_SHUT_WR;
+ }
+ return 0;
+}
+
+int nghttp2_session_check_request_allowed(nghttp2_session *session) {
+ return !session->server && session->next_stream_id <= INT32_MAX &&
+ (session->goaway_flags & NGHTTP2_GOAWAY_RECV) == 0 &&
+ !session_is_closing(session);
+}
+
+/*
+ * This function checks request HEADERS frame, which opens stream, can
+ * be sent at this time.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_START_STREAM_NOT_ALLOWED
+ * New stream cannot be created because of GOAWAY: session is
+ * going down or received last_stream_id is strictly less than
+ * frame->hd.stream_id.
+ * NGHTTP2_ERR_STREAM_CLOSING
+ * request HEADERS was canceled by RST_STREAM while it is in queue.
+ */
+static int session_predicate_request_headers_send(nghttp2_session *session,
+ nghttp2_outbound_item *item) {
+ if (item->aux_data.headers.canceled) {
+ return NGHTTP2_ERR_STREAM_CLOSING;
+ }
+ /* If we are terminating session (NGHTTP2_GOAWAY_TERM_ON_SEND),
+ GOAWAY was received from peer, or session is about to close, new
+ request is not allowed. */
+ if ((session->goaway_flags & NGHTTP2_GOAWAY_RECV) ||
+ session_is_closing(session)) {
+ return NGHTTP2_ERR_START_STREAM_NOT_ALLOWED;
+ }
+ return 0;
+}
+
+/*
+ * This function checks HEADERS, which is the first frame from the
+ * server, with the |stream| can be sent at this time. The |stream|
+ * can be NULL.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_STREAM_CLOSED
+ * The stream is already closed or does not exist.
+ * NGHTTP2_ERR_STREAM_SHUT_WR
+ * The transmission is not allowed for this stream (e.g., a frame
+ * with END_STREAM flag set has already sent)
+ * NGHTTP2_ERR_INVALID_STREAM_ID
+ * The stream ID is invalid.
+ * NGHTTP2_ERR_STREAM_CLOSING
+ * RST_STREAM was queued for this stream.
+ * NGHTTP2_ERR_INVALID_STREAM_STATE
+ * The state of the stream is not valid.
+ * NGHTTP2_ERR_SESSION_CLOSING
+ * This session is closing.
+ * NGHTTP2_ERR_PROTO
+ * Client side attempted to send response.
+ */
+static int session_predicate_response_headers_send(nghttp2_session *session,
+ nghttp2_stream *stream) {
+ int rv;
+ rv = session_predicate_for_stream_send(session, stream);
+ if (rv != 0) {
+ return rv;
+ }
+ assert(stream);
+ if (!session->server) {
+ return NGHTTP2_ERR_PROTO;
+ }
+ if (nghttp2_session_is_my_stream_id(session, stream->stream_id)) {
+ return NGHTTP2_ERR_INVALID_STREAM_ID;
+ }
+ if (stream->state == NGHTTP2_STREAM_OPENING) {
+ return 0;
+ }
+ if (stream->state == NGHTTP2_STREAM_CLOSING) {
+ return NGHTTP2_ERR_STREAM_CLOSING;
+ }
+ return NGHTTP2_ERR_INVALID_STREAM_STATE;
+}
+
+/*
+ * This function checks HEADERS for reserved stream can be sent. The
+ * |stream| must be reserved state and the |session| is server side.
+ * The |stream| can be NULL.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * error codes:
+ *
+ * NGHTTP2_ERR_STREAM_CLOSED
+ * The stream is already closed.
+ * NGHTTP2_ERR_STREAM_SHUT_WR
+ * The stream is half-closed for transmission.
+ * NGHTTP2_ERR_PROTO
+ * The stream is not reserved state
+ * NGHTTP2_ERR_STREAM_CLOSED
+ * RST_STREAM was queued for this stream.
+ * NGHTTP2_ERR_SESSION_CLOSING
+ * This session is closing.
+ * NGHTTP2_ERR_START_STREAM_NOT_ALLOWED
+ * New stream cannot be created because GOAWAY is already sent or
+ * received.
+ * NGHTTP2_ERR_PROTO
+ * Client side attempted to send push response.
+ */
+static int
+session_predicate_push_response_headers_send(nghttp2_session *session,
+ nghttp2_stream *stream) {
+ int rv;
+ /* TODO Should disallow HEADERS if GOAWAY has already been issued? */
+ rv = session_predicate_for_stream_send(session, stream);
+ if (rv != 0) {
+ return rv;
+ }
+ assert(stream);
+ if (!session->server) {
+ return NGHTTP2_ERR_PROTO;
+ }
+ if (stream->state != NGHTTP2_STREAM_RESERVED) {
+ return NGHTTP2_ERR_PROTO;
+ }
+ if (stream->state == NGHTTP2_STREAM_CLOSING) {
+ return NGHTTP2_ERR_STREAM_CLOSING;
+ }
+ if (session->goaway_flags & NGHTTP2_GOAWAY_RECV) {
+ return NGHTTP2_ERR_START_STREAM_NOT_ALLOWED;
+ }
+ return 0;
+}
+
+/*
+ * This function checks HEADERS, which is neither stream-opening nor
+ * first response header, with the |stream| can be sent at this time.
+ * The |stream| can be NULL.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_STREAM_CLOSED
+ * The stream is already closed or does not exist.
+ * NGHTTP2_ERR_STREAM_SHUT_WR
+ * The transmission is not allowed for this stream (e.g., a frame
+ * with END_STREAM flag set has already sent)
+ * NGHTTP2_ERR_STREAM_CLOSING
+ * RST_STREAM was queued for this stream.
+ * NGHTTP2_ERR_INVALID_STREAM_STATE
+ * The state of the stream is not valid.
+ * NGHTTP2_ERR_SESSION_CLOSING
+ * This session is closing.
+ */
+static int session_predicate_headers_send(nghttp2_session *session,
+ nghttp2_stream *stream) {
+ int rv;
+ rv = session_predicate_for_stream_send(session, stream);
+ if (rv != 0) {
+ return rv;
+ }
+ assert(stream);
+ if (nghttp2_session_is_my_stream_id(session, stream->stream_id)) {
+ if (stream->state == NGHTTP2_STREAM_CLOSING) {
+ return NGHTTP2_ERR_STREAM_CLOSING;
+ }
+ return 0;
+ }
+ if (stream->state == NGHTTP2_STREAM_OPENED) {
+ return 0;
+ }
+ if (stream->state == NGHTTP2_STREAM_CLOSING) {
+ return NGHTTP2_ERR_STREAM_CLOSING;
+ }
+ return NGHTTP2_ERR_INVALID_STREAM_STATE;
+}
+
+/*
+ * This function checks PUSH_PROMISE frame |frame| with the |stream|
+ * can be sent at this time. The |stream| can be NULL.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_START_STREAM_NOT_ALLOWED
+ * New stream cannot be created because GOAWAY is already sent or
+ * received.
+ * NGHTTP2_ERR_PROTO
+ * The client side attempts to send PUSH_PROMISE, or the server
+ * sends PUSH_PROMISE for the stream not initiated by the client.
+ * NGHTTP2_ERR_STREAM_CLOSED
+ * The stream is already closed or does not exist.
+ * NGHTTP2_ERR_STREAM_CLOSING
+ * RST_STREAM was queued for this stream.
+ * NGHTTP2_ERR_STREAM_SHUT_WR
+ * The transmission is not allowed for this stream (e.g., a frame
+ * with END_STREAM flag set has already sent)
+ * NGHTTP2_ERR_PUSH_DISABLED
+ * The remote peer disabled reception of PUSH_PROMISE.
+ * NGHTTP2_ERR_SESSION_CLOSING
+ * This session is closing.
+ */
+static int session_predicate_push_promise_send(nghttp2_session *session,
+ nghttp2_stream *stream) {
+ int rv;
+
+ if (!session->server) {
+ return NGHTTP2_ERR_PROTO;
+ }
+
+ rv = session_predicate_for_stream_send(session, stream);
+ if (rv != 0) {
+ return rv;
+ }
+
+ assert(stream);
+
+ if (session->remote_settings.enable_push == 0) {
+ return NGHTTP2_ERR_PUSH_DISABLED;
+ }
+ if (stream->state == NGHTTP2_STREAM_CLOSING) {
+ return NGHTTP2_ERR_STREAM_CLOSING;
+ }
+ if (session->goaway_flags & NGHTTP2_GOAWAY_RECV) {
+ return NGHTTP2_ERR_START_STREAM_NOT_ALLOWED;
+ }
+ return 0;
+}
+
+/*
+ * This function checks WINDOW_UPDATE with the stream ID |stream_id|
+ * can be sent at this time. Note that END_STREAM flag of the previous
+ * frame does not affect the transmission of the WINDOW_UPDATE frame.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_STREAM_CLOSED
+ * The stream is already closed or does not exist.
+ * NGHTTP2_ERR_STREAM_CLOSING
+ * RST_STREAM was queued for this stream.
+ * NGHTTP2_ERR_INVALID_STREAM_STATE
+ * The state of the stream is not valid.
+ * NGHTTP2_ERR_SESSION_CLOSING
+ * This session is closing.
+ */
+static int session_predicate_window_update_send(nghttp2_session *session,
+ int32_t stream_id) {
+ nghttp2_stream *stream;
+
+ if (session_is_closing(session)) {
+ return NGHTTP2_ERR_SESSION_CLOSING;
+ }
+
+ if (stream_id == 0) {
+ /* Connection-level window update */
+ return 0;
+ }
+ stream = nghttp2_session_get_stream(session, stream_id);
+ if (stream == NULL) {
+ return NGHTTP2_ERR_STREAM_CLOSED;
+ }
+ if (stream->state == NGHTTP2_STREAM_CLOSING) {
+ return NGHTTP2_ERR_STREAM_CLOSING;
+ }
+ if (state_reserved_local(session, stream)) {
+ return NGHTTP2_ERR_INVALID_STREAM_STATE;
+ }
+ return 0;
+}
+
+static int session_predicate_altsvc_send(nghttp2_session *session,
+ int32_t stream_id) {
+ nghttp2_stream *stream;
+
+ if (session_is_closing(session)) {
+ return NGHTTP2_ERR_SESSION_CLOSING;
+ }
+
+ if (stream_id == 0) {
+ return 0;
+ }
+
+ stream = nghttp2_session_get_stream(session, stream_id);
+ if (stream == NULL) {
+ return NGHTTP2_ERR_STREAM_CLOSED;
+ }
+ if (stream->state == NGHTTP2_STREAM_CLOSING) {
+ return NGHTTP2_ERR_STREAM_CLOSING;
+ }
+
+ return 0;
+}
+
+/* Take into account settings max frame size and both connection-level
+ flow control here */
+static ssize_t
+nghttp2_session_enforce_flow_control_limits(nghttp2_session *session,
+ nghttp2_stream *stream,
+ ssize_t requested_window_size) {
+ DEBUGF(fprintf(stderr, "send: remote windowsize connection=%d, "
+ "remote maxframsize=%u, stream(id %d)=%d\n",
+ session->remote_window_size,
+ session->remote_settings.max_frame_size, stream->stream_id,
+ stream->remote_window_size));
+
+ return nghttp2_min(nghttp2_min(nghttp2_min(requested_window_size,
+ stream->remote_window_size),
+ session->remote_window_size),
+ (int32_t)session->remote_settings.max_frame_size);
+}
+
+/*
+ * Returns the maximum length of next data read. If the
+ * connection-level and/or stream-wise flow control are enabled, the
+ * return value takes into account those current window sizes. The remote
+ * settings for max frame size is also taken into account.
+ */
+static size_t nghttp2_session_next_data_read(nghttp2_session *session,
+ nghttp2_stream *stream) {
+ ssize_t window_size;
+
+ window_size = nghttp2_session_enforce_flow_control_limits(
+ session, stream, NGHTTP2_DATA_PAYLOADLEN);
+
+ DEBUGF(fprintf(stderr, "send: available window=%zd\n", window_size));
+
+ return window_size > 0 ? (size_t)window_size : 0;
+}
+
+/*
+ * This function checks DATA with the |stream| can be sent at this
+ * time. The |stream| can be NULL.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_STREAM_CLOSED
+ * The stream is already closed or does not exist.
+ * NGHTTP2_ERR_STREAM_SHUT_WR
+ * The transmission is not allowed for this stream (e.g., a frame
+ * with END_STREAM flag set has already sent)
+ * NGHTTP2_ERR_STREAM_CLOSING
+ * RST_STREAM was queued for this stream.
+ * NGHTTP2_ERR_INVALID_STREAM_STATE
+ * The state of the stream is not valid.
+ * NGHTTP2_ERR_SESSION_CLOSING
+ * This session is closing.
+ */
+static int nghttp2_session_predicate_data_send(nghttp2_session *session,
+ nghttp2_stream *stream) {
+ int rv;
+ rv = session_predicate_for_stream_send(session, stream);
+ if (rv != 0) {
+ return rv;
+ }
+ assert(stream);
+ if (nghttp2_session_is_my_stream_id(session, stream->stream_id)) {
+ /* Request body data */
+ /* If stream->state is NGHTTP2_STREAM_CLOSING, RST_STREAM was
+ queued but not yet sent. In this case, we won't send DATA
+ frames. */
+ if (stream->state == NGHTTP2_STREAM_CLOSING) {
+ return NGHTTP2_ERR_STREAM_CLOSING;
+ }
+ if (stream->state == NGHTTP2_STREAM_RESERVED) {
+ return NGHTTP2_ERR_INVALID_STREAM_STATE;
+ }
+ return 0;
+ }
+ /* Response body data */
+ if (stream->state == NGHTTP2_STREAM_OPENED) {
+ return 0;
+ }
+ if (stream->state == NGHTTP2_STREAM_CLOSING) {
+ return NGHTTP2_ERR_STREAM_CLOSING;
+ }
+ return NGHTTP2_ERR_INVALID_STREAM_STATE;
+}
+
+static ssize_t session_call_select_padding(nghttp2_session *session,
+ const nghttp2_frame *frame,
+ size_t max_payloadlen) {
+ ssize_t rv;
+
+ if (frame->hd.length >= max_payloadlen) {
+ return (ssize_t)frame->hd.length;
+ }
+
+ if (session->callbacks.select_padding_callback) {
+ size_t max_paddedlen;
+
+ max_paddedlen =
+ nghttp2_min(frame->hd.length + NGHTTP2_MAX_PADLEN, max_payloadlen);
+
+ rv = session->callbacks.select_padding_callback(
+ session, frame, max_paddedlen, session->user_data);
+ if (rv < (ssize_t)frame->hd.length || rv > (ssize_t)max_paddedlen) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ return rv;
+ }
+ return (ssize_t)frame->hd.length;
+}
+
+/* Add padding to HEADERS or PUSH_PROMISE. We use
+ frame->headers.padlen in this function to use the fact that
+ frame->push_promise has also padlen in the same position. */
+static int session_headers_add_pad(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ int rv;
+ ssize_t padded_payloadlen;
+ nghttp2_active_outbound_item *aob;
+ nghttp2_bufs *framebufs;
+ size_t padlen;
+ size_t max_payloadlen;
+
+ aob = &session->aob;
+ framebufs = &aob->framebufs;
+
+ max_payloadlen = nghttp2_min(NGHTTP2_MAX_PAYLOADLEN,
+ frame->hd.length + NGHTTP2_MAX_PADLEN);
+
+ padded_payloadlen =
+ session_call_select_padding(session, frame, max_payloadlen);
+
+ if (nghttp2_is_fatal((int)padded_payloadlen)) {
+ return (int)padded_payloadlen;
+ }
+
+ padlen = (size_t)padded_payloadlen - frame->hd.length;
+
+ DEBUGF(fprintf(stderr, "send: padding selected: payloadlen=%zd, padlen=%zu\n",
+ padded_payloadlen, padlen));
+
+ rv = nghttp2_frame_add_pad(framebufs, &frame->hd, padlen, 0);
+
+ if (rv != 0) {
+ return rv;
+ }
+
+ frame->headers.padlen = padlen;
+
+ return 0;
+}
+
+static size_t session_estimate_headers_payload(nghttp2_session *session,
+ const nghttp2_nv *nva,
+ size_t nvlen,
+ size_t additional) {
+ return nghttp2_hd_deflate_bound(&session->hd_deflater, nva, nvlen) +
+ additional;
+}
+
+static int session_pack_extension(nghttp2_session *session, nghttp2_bufs *bufs,
+ nghttp2_frame *frame) {
+ ssize_t rv;
+ nghttp2_buf *buf;
+ size_t buflen;
+ size_t framelen;
+
+ assert(session->callbacks.pack_extension_callback);
+
+ buf = &bufs->head->buf;
+ buflen = nghttp2_min(nghttp2_buf_avail(buf), NGHTTP2_MAX_PAYLOADLEN);
+
+ rv = session->callbacks.pack_extension_callback(session, buf->last, buflen,
+ frame, session->user_data);
+ if (rv == NGHTTP2_ERR_CANCEL) {
+ return (int)rv;
+ }
+
+ if (rv < 0 || (size_t)rv > buflen) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+
+ framelen = (size_t)rv;
+
+ frame->hd.length = framelen;
+
+ assert(buf->pos == buf->last);
+ buf->last += framelen;
+ buf->pos -= NGHTTP2_FRAME_HDLEN;
+
+ nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd);
+
+ return 0;
+}
+
+/*
+ * This function serializes frame for transmission.
+ *
+ * This function returns 0 if it succeeds, or one of negative error
+ * codes, including both fatal and non-fatal ones.
+ */
+static int session_prep_frame(nghttp2_session *session,
+ nghttp2_outbound_item *item) {
+ int rv;
+ nghttp2_frame *frame;
+ nghttp2_mem *mem;
+
+ mem = &session->mem;
+ frame = &item->frame;
+
+ if (frame->hd.type != NGHTTP2_DATA) {
+ switch (frame->hd.type) {
+ case NGHTTP2_HEADERS: {
+ nghttp2_headers_aux_data *aux_data;
+ size_t estimated_payloadlen;
+
+ aux_data = &item->aux_data.headers;
+
+ if (frame->headers.cat == NGHTTP2_HCAT_REQUEST) {
+ /* initial HEADERS, which opens stream */
+ nghttp2_stream *stream;
+
+ stream = nghttp2_session_open_stream(
+ session, frame->hd.stream_id, NGHTTP2_STREAM_FLAG_NONE,
+ &frame->headers.pri_spec, NGHTTP2_STREAM_INITIAL,
+ aux_data->stream_user_data);
+
+ if (stream == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ /* We don't call nghttp2_session_adjust_closed_stream() here,
+ since we don't keep closed stream in client side */
+
+ estimated_payloadlen = session_estimate_headers_payload(
+ session, frame->headers.nva, frame->headers.nvlen,
+ NGHTTP2_PRIORITY_SPECLEN);
+
+ if (estimated_payloadlen > session->max_send_header_block_length) {
+ return NGHTTP2_ERR_FRAME_SIZE_ERROR;
+ }
+
+ rv = session_predicate_request_headers_send(session, item);
+ if (rv != 0) {
+ return rv;
+ }
+
+ if (session_enforce_http_messaging(session)) {
+ nghttp2_http_record_request_method(stream, frame);
+ }
+ } else {
+ nghttp2_stream *stream;
+
+ estimated_payloadlen = session_estimate_headers_payload(
+ session, frame->headers.nva, frame->headers.nvlen,
+ NGHTTP2_PRIORITY_SPECLEN);
+
+ if (estimated_payloadlen > session->max_send_header_block_length) {
+ return NGHTTP2_ERR_FRAME_SIZE_ERROR;
+ }
+
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+
+ if (stream && stream->state == NGHTTP2_STREAM_RESERVED) {
+ rv = session_predicate_push_response_headers_send(session, stream);
+ if (rv == 0) {
+ frame->headers.cat = NGHTTP2_HCAT_PUSH_RESPONSE;
+
+ if (aux_data->stream_user_data) {
+ stream->stream_user_data = aux_data->stream_user_data;
+ }
+ }
+ } else if (session_predicate_response_headers_send(session, stream) ==
+ 0) {
+ frame->headers.cat = NGHTTP2_HCAT_RESPONSE;
+ rv = 0;
+ } else {
+ frame->headers.cat = NGHTTP2_HCAT_HEADERS;
+
+ rv = session_predicate_headers_send(session, stream);
+ }
+
+ if (rv != 0) {
+ // If stream was already closed, nghttp2_session_get_stream()
+ // returns NULL, but item is still attached to the stream.
+ // Search stream including closed again.
+ stream = nghttp2_session_get_stream_raw(session, frame->hd.stream_id);
+ if (stream && stream->item == item) {
+ int rv2;
+
+ rv2 = nghttp2_stream_detach_item(stream);
+
+ if (nghttp2_is_fatal(rv2)) {
+ return rv2;
+ }
+ }
+
+ return rv;
+ }
+ }
+
+ rv = nghttp2_frame_pack_headers(&session->aob.framebufs, &frame->headers,
+ &session->hd_deflater);
+
+ if (rv != 0) {
+ return rv;
+ }
+
+ DEBUGF(fprintf(stderr,
+ "send: before padding, HEADERS serialized in %zd bytes\n",
+ nghttp2_bufs_len(&session->aob.framebufs)));
+
+ rv = session_headers_add_pad(session, frame);
+
+ if (rv != 0) {
+ return rv;
+ }
+
+ DEBUGF(fprintf(stderr, "send: HEADERS finally serialized in %zd bytes\n",
+ nghttp2_bufs_len(&session->aob.framebufs)));
+
+ if (frame->headers.cat == NGHTTP2_HCAT_REQUEST) {
+ assert(session->last_sent_stream_id < frame->hd.stream_id);
+ session->last_sent_stream_id = frame->hd.stream_id;
+ }
+
+ break;
+ }
+ case NGHTTP2_PRIORITY: {
+ if (session_is_closing(session)) {
+ return NGHTTP2_ERR_SESSION_CLOSING;
+ }
+ /* PRIORITY frame can be sent at any time and to any stream
+ ID. */
+ nghttp2_frame_pack_priority(&session->aob.framebufs, &frame->priority);
+
+ /* Peer can send PRIORITY frame against idle stream to create
+ "anchor" in dependency tree. Only client can do this in
+ nghttp2. In nghttp2, only server retains non-active (closed
+ or idle) streams in memory, so we don't open stream here. */
+ break;
+ }
+ case NGHTTP2_RST_STREAM:
+ if (session_is_closing(session)) {
+ return NGHTTP2_ERR_SESSION_CLOSING;
+ }
+ nghttp2_frame_pack_rst_stream(&session->aob.framebufs,
+ &frame->rst_stream);
+ break;
+ case NGHTTP2_SETTINGS: {
+ if (frame->hd.flags & NGHTTP2_FLAG_ACK) {
+ assert(session->obq_flood_counter_ > 0);
+ --session->obq_flood_counter_;
+ /* When session is about to close, don't send SETTINGS ACK.
+ We are required to send SETTINGS without ACK though; for
+ example, we have to send SETTINGS as a part of connection
+ preface. */
+ if (session_is_closing(session)) {
+ return NGHTTP2_ERR_SESSION_CLOSING;
+ }
+ }
+
+ rv = nghttp2_frame_pack_settings(&session->aob.framebufs,
+ &frame->settings);
+ if (rv != 0) {
+ return rv;
+ }
+ break;
+ }
+ case NGHTTP2_PUSH_PROMISE: {
+ nghttp2_stream *stream;
+ size_t estimated_payloadlen;
+
+ estimated_payloadlen = session_estimate_headers_payload(
+ session, frame->push_promise.nva, frame->push_promise.nvlen, 0);
+
+ if (estimated_payloadlen > session->max_send_header_block_length) {
+ return NGHTTP2_ERR_FRAME_SIZE_ERROR;
+ }
+
+ /* stream could be NULL if associated stream was already
+ closed. */
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+
+ /* predicte should fail if stream is NULL. */
+ rv = session_predicate_push_promise_send(session, stream);
+ if (rv != 0) {
+ return rv;
+ }
+
+ assert(stream);
+
+ rv = nghttp2_frame_pack_push_promise(
+ &session->aob.framebufs, &frame->push_promise, &session->hd_deflater);
+ if (rv != 0) {
+ return rv;
+ }
+ rv = session_headers_add_pad(session, frame);
+ if (rv != 0) {
+ return rv;
+ }
+
+ assert(session->last_sent_stream_id + 2 <=
+ frame->push_promise.promised_stream_id);
+ session->last_sent_stream_id = frame->push_promise.promised_stream_id;
+
+ break;
+ }
+ case NGHTTP2_PING:
+ if (frame->hd.flags & NGHTTP2_FLAG_ACK) {
+ assert(session->obq_flood_counter_ > 0);
+ --session->obq_flood_counter_;
+ }
+
+ if (session_is_closing(session)) {
+ return NGHTTP2_ERR_SESSION_CLOSING;
+ }
+ nghttp2_frame_pack_ping(&session->aob.framebufs, &frame->ping);
+ break;
+ case NGHTTP2_GOAWAY:
+ rv = nghttp2_frame_pack_goaway(&session->aob.framebufs, &frame->goaway);
+ if (rv != 0) {
+ return rv;
+ }
+ session->local_last_stream_id = frame->goaway.last_stream_id;
+
+ break;
+ case NGHTTP2_WINDOW_UPDATE:
+ rv = session_predicate_window_update_send(session, frame->hd.stream_id);
+ if (rv != 0) {
+ return rv;
+ }
+ nghttp2_frame_pack_window_update(&session->aob.framebufs,
+ &frame->window_update);
+ break;
+ case NGHTTP2_CONTINUATION:
+ /* We never handle CONTINUATION here. */
+ assert(0);
+ break;
+ default: {
+ nghttp2_ext_aux_data *aux_data;
+
+ /* extension frame */
+
+ aux_data = &item->aux_data.ext;
+
+ if (aux_data->builtin == 0) {
+ if (session_is_closing(session)) {
+ return NGHTTP2_ERR_SESSION_CLOSING;
+ }
+
+ rv = session_pack_extension(session, &session->aob.framebufs, frame);
+ if (rv != 0) {
+ return rv;
+ }
+
+ break;
+ }
+
+ switch (frame->hd.type) {
+ case NGHTTP2_ALTSVC:
+ rv = session_predicate_altsvc_send(session, frame->hd.stream_id);
+ if (rv != 0) {
+ return rv;
+ }
+
+ nghttp2_frame_pack_altsvc(&session->aob.framebufs, &frame->ext);
+
+ break;
+ default:
+ /* Unreachable here */
+ assert(0);
+ break;
+ }
+
+ break;
+ }
+ }
+ return 0;
+ } else {
+ size_t next_readmax;
+ nghttp2_stream *stream;
+
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+
+ if (stream) {
+ assert(stream->item == item);
+ }
+
+ rv = nghttp2_session_predicate_data_send(session, stream);
+ if (rv != 0) {
+ // If stream was already closed, nghttp2_session_get_stream()
+ // returns NULL, but item is still attached to the stream.
+ // Search stream including closed again.
+ stream = nghttp2_session_get_stream_raw(session, frame->hd.stream_id);
+ if (stream) {
+ int rv2;
+
+ rv2 = nghttp2_stream_detach_item(stream);
+
+ if (nghttp2_is_fatal(rv2)) {
+ return rv2;
+ }
+ }
+
+ return rv;
+ }
+ /* Assuming stream is not NULL */
+ assert(stream);
+ next_readmax = nghttp2_session_next_data_read(session, stream);
+
+ if (next_readmax == 0) {
+
+ /* This must be true since we only pop DATA frame item from
+ queue when session->remote_window_size > 0 */
+ assert(session->remote_window_size > 0);
+
+ rv = nghttp2_stream_defer_item(stream,
+ NGHTTP2_STREAM_FLAG_DEFERRED_FLOW_CONTROL);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ session->aob.item = NULL;
+ active_outbound_item_reset(&session->aob, mem);
+ return NGHTTP2_ERR_DEFERRED;
+ }
+
+ rv = nghttp2_session_pack_data(session, &session->aob.framebufs,
+ next_readmax, frame, &item->aux_data.data,
+ stream);
+ if (rv == NGHTTP2_ERR_DEFERRED) {
+ rv = nghttp2_stream_defer_item(stream, NGHTTP2_STREAM_FLAG_DEFERRED_USER);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ session->aob.item = NULL;
+ active_outbound_item_reset(&session->aob, mem);
+ return NGHTTP2_ERR_DEFERRED;
+ }
+ if (rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) {
+ rv = nghttp2_stream_detach_item(stream);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ rv = nghttp2_session_add_rst_stream(session, frame->hd.stream_id,
+ NGHTTP2_INTERNAL_ERROR);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
+ }
+ if (rv != 0) {
+ int rv2;
+
+ rv2 = nghttp2_stream_detach_item(stream);
+
+ if (nghttp2_is_fatal(rv2)) {
+ return rv2;
+ }
+
+ return rv;
+ }
+ return 0;
+ }
+}
+
+nghttp2_outbound_item *
+nghttp2_session_get_next_ob_item(nghttp2_session *session) {
+ if (nghttp2_outbound_queue_top(&session->ob_urgent)) {
+ return nghttp2_outbound_queue_top(&session->ob_urgent);
+ }
+
+ if (nghttp2_outbound_queue_top(&session->ob_reg)) {
+ return nghttp2_outbound_queue_top(&session->ob_reg);
+ }
+
+ if (!session_is_outgoing_concurrent_streams_max(session)) {
+ if (nghttp2_outbound_queue_top(&session->ob_syn)) {
+ return nghttp2_outbound_queue_top(&session->ob_syn);
+ }
+ }
+
+ if (session->remote_window_size > 0) {
+ return nghttp2_stream_next_outbound_item(&session->root);
+ }
+
+ return NULL;
+}
+
+nghttp2_outbound_item *
+nghttp2_session_pop_next_ob_item(nghttp2_session *session) {
+ nghttp2_outbound_item *item;
+
+ item = nghttp2_outbound_queue_top(&session->ob_urgent);
+ if (item) {
+ nghttp2_outbound_queue_pop(&session->ob_urgent);
+ item->queued = 0;
+ return item;
+ }
+
+ item = nghttp2_outbound_queue_top(&session->ob_reg);
+ if (item) {
+ nghttp2_outbound_queue_pop(&session->ob_reg);
+ item->queued = 0;
+ return item;
+ }
+
+ if (!session_is_outgoing_concurrent_streams_max(session)) {
+ item = nghttp2_outbound_queue_top(&session->ob_syn);
+ if (item) {
+ nghttp2_outbound_queue_pop(&session->ob_syn);
+ item->queued = 0;
+ return item;
+ }
+ }
+
+ if (session->remote_window_size > 0) {
+ return nghttp2_stream_next_outbound_item(&session->root);
+ }
+
+ return NULL;
+}
+
+static int session_call_before_frame_send(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ int rv;
+ if (session->callbacks.before_frame_send_callback) {
+ rv = session->callbacks.before_frame_send_callback(session, frame,
+ session->user_data);
+ if (rv == NGHTTP2_ERR_CANCEL) {
+ return rv;
+ }
+
+ if (rv != 0) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ }
+ return 0;
+}
+
+static int session_call_on_frame_send(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ int rv;
+ if (session->callbacks.on_frame_send_callback) {
+ rv = session->callbacks.on_frame_send_callback(session, frame,
+ session->user_data);
+ if (rv != 0) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ }
+ return 0;
+}
+
+static int find_stream_on_goaway_func(nghttp2_map_entry *entry, void *ptr) {
+ nghttp2_close_stream_on_goaway_arg *arg;
+ nghttp2_stream *stream;
+
+ arg = (nghttp2_close_stream_on_goaway_arg *)ptr;
+ stream = (nghttp2_stream *)entry;
+
+ if (nghttp2_session_is_my_stream_id(arg->session, stream->stream_id)) {
+ if (arg->incoming) {
+ return 0;
+ }
+ } else if (!arg->incoming) {
+ return 0;
+ }
+
+ if (stream->state != NGHTTP2_STREAM_IDLE &&
+ (stream->flags & NGHTTP2_STREAM_FLAG_CLOSED) == 0 &&
+ stream->stream_id > arg->last_stream_id) {
+ /* We are collecting streams to close because we cannot call
+ nghttp2_session_close_stream() inside nghttp2_map_each().
+ Reuse closed_next member.. bad choice? */
+ assert(stream->closed_next == NULL);
+ assert(stream->closed_prev == NULL);
+
+ if (arg->head) {
+ stream->closed_next = arg->head;
+ arg->head = stream;
+ } else {
+ arg->head = stream;
+ }
+ }
+
+ return 0;
+}
+
+/* Closes non-idle and non-closed streams whose stream ID >
+ last_stream_id. If incoming is nonzero, we are going to close
+ incoming streams. Otherwise, close outgoing streams. */
+static int session_close_stream_on_goaway(nghttp2_session *session,
+ int32_t last_stream_id,
+ int incoming) {
+ int rv;
+ nghttp2_stream *stream, *next_stream;
+ nghttp2_close_stream_on_goaway_arg arg = {session, NULL, last_stream_id,
+ incoming};
+ uint32_t error_code;
+
+ rv = nghttp2_map_each(&session->streams, find_stream_on_goaway_func, &arg);
+ assert(rv == 0);
+
+ error_code =
+ session->server && incoming ? NGHTTP2_REFUSED_STREAM : NGHTTP2_CANCEL;
+
+ stream = arg.head;
+ while (stream) {
+ next_stream = stream->closed_next;
+ stream->closed_next = NULL;
+ rv = nghttp2_session_close_stream(session, stream->stream_id, error_code);
+
+ /* stream may be deleted here */
+
+ stream = next_stream;
+
+ if (nghttp2_is_fatal(rv)) {
+ /* Clean up closed_next member just in case */
+ while (stream) {
+ next_stream = stream->closed_next;
+ stream->closed_next = NULL;
+ stream = next_stream;
+ }
+ return rv;
+ }
+ }
+
+ return 0;
+}
+
+static void reschedule_stream(nghttp2_stream *stream) {
+ stream->last_writelen = stream->item->frame.hd.length;
+
+ nghttp2_stream_reschedule(stream);
+}
+
+static int session_update_stream_consumed_size(nghttp2_session *session,
+ nghttp2_stream *stream,
+ size_t delta_size);
+
+static int session_update_connection_consumed_size(nghttp2_session *session,
+ size_t delta_size);
+
+static int session_update_recv_connection_window_size(nghttp2_session *session,
+ size_t delta_size);
+
+static int session_update_recv_stream_window_size(nghttp2_session *session,
+ nghttp2_stream *stream,
+ size_t delta_size,
+ int send_window_update);
+
+/*
+ * Called after a frame is sent. This function runs
+ * on_frame_send_callback and handles stream closure upon END_STREAM
+ * or RST_STREAM. This function does not reset session->aob. It is a
+ * responsibility of session_after_frame_sent2.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The callback function failed.
+ */
+static int session_after_frame_sent1(nghttp2_session *session) {
+ int rv;
+ nghttp2_active_outbound_item *aob = &session->aob;
+ nghttp2_outbound_item *item = aob->item;
+ nghttp2_bufs *framebufs = &aob->framebufs;
+ nghttp2_frame *frame;
+
+ frame = &item->frame;
+
+ if (frame->hd.type != NGHTTP2_DATA) {
+
+ if (frame->hd.type == NGHTTP2_HEADERS ||
+ frame->hd.type == NGHTTP2_PUSH_PROMISE) {
+
+ if (nghttp2_bufs_next_present(framebufs)) {
+ DEBUGF(fprintf(stderr, "send: CONTINUATION exists, just return\n"));
+ return 0;
+ }
+ }
+ rv = session_call_on_frame_send(session, frame);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ switch (frame->hd.type) {
+ case NGHTTP2_HEADERS: {
+ nghttp2_headers_aux_data *aux_data;
+ nghttp2_stream *stream;
+
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+ if (!stream) {
+ break;
+ }
+
+ if (stream->item == item) {
+ rv = nghttp2_stream_detach_item(stream);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+
+ switch (frame->headers.cat) {
+ case NGHTTP2_HCAT_REQUEST: {
+ stream->state = NGHTTP2_STREAM_OPENING;
+ if (frame->hd.flags & NGHTTP2_FLAG_END_STREAM) {
+ nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_WR);
+ }
+ rv = nghttp2_session_close_stream_if_shut_rdwr(session, stream);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ /* We assume aux_data is a pointer to nghttp2_headers_aux_data */
+ aux_data = &item->aux_data.headers;
+ if (aux_data->data_prd.read_callback) {
+ /* nghttp2_submit_data() makes a copy of aux_data->data_prd */
+ rv = nghttp2_submit_data(session, NGHTTP2_FLAG_END_STREAM,
+ frame->hd.stream_id, &aux_data->data_prd);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ /* TODO nghttp2_submit_data() may fail if stream has already
+ DATA frame item. We might have to handle it here. */
+ }
+ break;
+ }
+ case NGHTTP2_HCAT_PUSH_RESPONSE:
+ stream->flags = (uint8_t)(stream->flags & ~NGHTTP2_STREAM_FLAG_PUSH);
+ ++session->num_outgoing_streams;
+ /* Fall through */
+ case NGHTTP2_HCAT_RESPONSE:
+ stream->state = NGHTTP2_STREAM_OPENED;
+ /* Fall through */
+ case NGHTTP2_HCAT_HEADERS:
+ if (frame->hd.flags & NGHTTP2_FLAG_END_STREAM) {
+ nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_WR);
+ }
+ rv = nghttp2_session_close_stream_if_shut_rdwr(session, stream);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ /* We assume aux_data is a pointer to nghttp2_headers_aux_data */
+ aux_data = &item->aux_data.headers;
+ if (aux_data->data_prd.read_callback) {
+ rv = nghttp2_submit_data(session, NGHTTP2_FLAG_END_STREAM,
+ frame->hd.stream_id, &aux_data->data_prd);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ /* TODO nghttp2_submit_data() may fail if stream has already
+ DATA frame item. We might have to handle it here. */
+ }
+ break;
+ }
+ break;
+ }
+ case NGHTTP2_PRIORITY: {
+ nghttp2_stream *stream;
+
+ if (session->server) {
+ break;
+ }
+
+ stream = nghttp2_session_get_stream_raw(session, frame->hd.stream_id);
+
+ if (!stream) {
+ if (!session_detect_idle_stream(session, frame->hd.stream_id)) {
+ break;
+ }
+
+ stream = nghttp2_session_open_stream(
+ session, frame->hd.stream_id, NGHTTP2_FLAG_NONE,
+ &frame->priority.pri_spec, NGHTTP2_STREAM_IDLE, NULL);
+ if (!stream) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+ } else {
+ rv = nghttp2_session_reprioritize_stream(session, stream,
+ &frame->priority.pri_spec);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+
+ rv = nghttp2_session_adjust_idle_stream(session);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ break;
+ }
+ case NGHTTP2_RST_STREAM:
+ rv = nghttp2_session_close_stream(session, frame->hd.stream_id,
+ frame->rst_stream.error_code);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ break;
+ case NGHTTP2_GOAWAY: {
+ nghttp2_goaway_aux_data *aux_data;
+
+ aux_data = &item->aux_data.goaway;
+
+ if ((aux_data->flags & NGHTTP2_GOAWAY_AUX_SHUTDOWN_NOTICE) == 0) {
+
+ if (aux_data->flags & NGHTTP2_GOAWAY_AUX_TERM_ON_SEND) {
+ session->goaway_flags |= NGHTTP2_GOAWAY_TERM_SENT;
+ }
+
+ session->goaway_flags |= NGHTTP2_GOAWAY_SENT;
+
+ rv = session_close_stream_on_goaway(session,
+ frame->goaway.last_stream_id, 1);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+
+ break;
+ }
+ case NGHTTP2_WINDOW_UPDATE:
+ if (frame->hd.stream_id == 0) {
+ session->window_update_queued = 0;
+ if (session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE) {
+ rv = session_update_connection_consumed_size(session, 0);
+ } else {
+ rv = session_update_recv_connection_window_size(session, 0);
+ }
+ } else {
+ nghttp2_stream *stream;
+
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+ if (!stream) {
+ break;
+ }
+
+ stream->window_update_queued = 0;
+
+ /* We don't have to send WINDOW_UPDATE if END_STREAM from peer
+ is seen. */
+ if (stream->shut_flags & NGHTTP2_SHUT_RD) {
+ break;
+ }
+
+ if (session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE) {
+ rv = session_update_stream_consumed_size(session, stream, 0);
+ } else {
+ rv = session_update_recv_stream_window_size(session, stream, 0, 1);
+ }
+ }
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+ } else {
+ nghttp2_stream *stream;
+ nghttp2_data_aux_data *aux_data;
+
+ aux_data = &item->aux_data.data;
+
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+ /* We update flow control window after a frame was completely
+ sent. This is possible because we choose payload length not to
+ exceed the window */
+ session->remote_window_size -= (int32_t)frame->hd.length;
+ if (stream) {
+ stream->remote_window_size -= (int32_t)frame->hd.length;
+ }
+
+ if (stream && aux_data->eof) {
+ rv = nghttp2_stream_detach_item(stream);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ /* Call on_frame_send_callback after
+ nghttp2_stream_detach_item(), so that application can issue
+ nghttp2_submit_data() in the callback. */
+ if (session->callbacks.on_frame_send_callback) {
+ rv = session_call_on_frame_send(session, frame);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+
+ if (frame->hd.flags & NGHTTP2_FLAG_END_STREAM) {
+ int stream_closed;
+
+ stream_closed =
+ (stream->shut_flags & NGHTTP2_SHUT_RDWR) == NGHTTP2_SHUT_RDWR;
+
+ nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_WR);
+
+ rv = nghttp2_session_close_stream_if_shut_rdwr(session, stream);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ /* stream may be NULL if it was closed */
+ if (stream_closed) {
+ stream = NULL;
+ }
+ }
+ return 0;
+ }
+
+ if (session->callbacks.on_frame_send_callback) {
+ rv = session_call_on_frame_send(session, frame);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+
+ return 0;
+ }
+ /* Unreachable */
+ assert(0);
+ return 0;
+}
+
+/*
+ * Called after a frame is sent and session_after_frame_sent1. This
+ * function is responsible to reset session->aob.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The callback function failed.
+ */
+static int session_after_frame_sent2(nghttp2_session *session) {
+ int rv;
+ nghttp2_active_outbound_item *aob = &session->aob;
+ nghttp2_outbound_item *item = aob->item;
+ nghttp2_bufs *framebufs = &aob->framebufs;
+ nghttp2_frame *frame;
+ nghttp2_mem *mem;
+ nghttp2_stream *stream;
+ nghttp2_data_aux_data *aux_data;
+
+ mem = &session->mem;
+ frame = &item->frame;
+
+ if (frame->hd.type != NGHTTP2_DATA) {
+
+ if (frame->hd.type == NGHTTP2_HEADERS ||
+ frame->hd.type == NGHTTP2_PUSH_PROMISE) {
+
+ if (nghttp2_bufs_next_present(framebufs)) {
+ framebufs->cur = framebufs->cur->next;
+
+ DEBUGF(fprintf(stderr, "send: next CONTINUATION frame, %zu bytes\n",
+ nghttp2_buf_len(&framebufs->cur->buf)));
+
+ return 0;
+ }
+ }
+
+ active_outbound_item_reset(&session->aob, mem);
+
+ return 0;
+ }
+
+ /* DATA frame */
+
+ aux_data = &item->aux_data.data;
+
+ /* On EOF, we have already detached data. Please note that
+ application may issue nghttp2_submit_data() in
+ on_frame_send_callback (call from session_after_frame_sent1),
+ which attach data to stream. We don't want to detach it. */
+ if (aux_data->eof) {
+ active_outbound_item_reset(aob, mem);
+
+ return 0;
+ }
+
+ /* Reset no_copy here because next write may not use this. */
+ aux_data->no_copy = 0;
+
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+
+ /* If session is closed or RST_STREAM was queued, we won't send
+ further data. */
+ if (nghttp2_session_predicate_data_send(session, stream) != 0) {
+ if (stream) {
+ rv = nghttp2_stream_detach_item(stream);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+
+ active_outbound_item_reset(aob, mem);
+
+ return 0;
+ }
+
+ aob->item = NULL;
+ active_outbound_item_reset(&session->aob, mem);
+
+ return 0;
+}
+
+static int session_call_send_data(nghttp2_session *session,
+ nghttp2_outbound_item *item,
+ nghttp2_bufs *framebufs) {
+ int rv;
+ nghttp2_buf *buf;
+ size_t length;
+ nghttp2_frame *frame;
+ nghttp2_data_aux_data *aux_data;
+
+ buf = &framebufs->cur->buf;
+ frame = &item->frame;
+ length = frame->hd.length - frame->data.padlen;
+ aux_data = &item->aux_data.data;
+
+ rv = session->callbacks.send_data_callback(session, frame, buf->pos, length,
+ &aux_data->data_prd.source,
+ session->user_data);
+
+ switch (rv) {
+ case 0:
+ case NGHTTP2_ERR_WOULDBLOCK:
+ case NGHTTP2_ERR_PAUSE:
+ case NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE:
+ return rv;
+ default:
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+}
+
+static ssize_t nghttp2_session_mem_send_internal(nghttp2_session *session,
+ const uint8_t **data_ptr,
+ int fast_cb) {
+ int rv;
+ nghttp2_active_outbound_item *aob;
+ nghttp2_bufs *framebufs;
+ nghttp2_mem *mem;
+
+ mem = &session->mem;
+ aob = &session->aob;
+ framebufs = &aob->framebufs;
+
+ /* We may have idle streams more than we expect (e.g.,
+ nghttp2_session_change_stream_priority() or
+ nghttp2_session_create_idle_stream()). Adjust them here. */
+ rv = nghttp2_session_adjust_idle_stream(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ for (;;) {
+ switch (aob->state) {
+ case NGHTTP2_OB_POP_ITEM: {
+ nghttp2_outbound_item *item;
+
+ item = nghttp2_session_pop_next_ob_item(session);
+ if (item == NULL) {
+ return 0;
+ }
+
+ rv = session_prep_frame(session, item);
+ if (rv == NGHTTP2_ERR_DEFERRED) {
+ DEBUGF(fprintf(stderr, "send: frame transmission deferred\n"));
+ break;
+ }
+ if (rv < 0) {
+ int32_t opened_stream_id = 0;
+ uint32_t error_code = NGHTTP2_INTERNAL_ERROR;
+
+ DEBUGF(fprintf(stderr, "send: frame preparation failed with %s\n",
+ nghttp2_strerror(rv)));
+ /* TODO If the error comes from compressor, the connection
+ must be closed. */
+ if (item->frame.hd.type != NGHTTP2_DATA &&
+ session->callbacks.on_frame_not_send_callback && is_non_fatal(rv)) {
+ nghttp2_frame *frame = &item->frame;
+ /* The library is responsible for the transmission of
+ WINDOW_UPDATE frame, so we don't call error callback for
+ it. */
+ if (frame->hd.type != NGHTTP2_WINDOW_UPDATE &&
+ session->callbacks.on_frame_not_send_callback(
+ session, frame, rv, session->user_data) != 0) {
+
+ nghttp2_outbound_item_free(item, mem);
+ nghttp2_mem_free(mem, item);
+
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ }
+ /* We have to close stream opened by failed request HEADERS
+ or PUSH_PROMISE. */
+ switch (item->frame.hd.type) {
+ case NGHTTP2_HEADERS:
+ if (item->frame.headers.cat == NGHTTP2_HCAT_REQUEST) {
+ opened_stream_id = item->frame.hd.stream_id;
+ if (item->aux_data.headers.canceled) {
+ error_code = item->aux_data.headers.error_code;
+ } else {
+ /* Set error_code to REFUSED_STREAM so that application
+ can send request again. */
+ error_code = NGHTTP2_REFUSED_STREAM;
+ }
+ }
+ break;
+ case NGHTTP2_PUSH_PROMISE:
+ opened_stream_id = item->frame.push_promise.promised_stream_id;
+ break;
+ }
+ if (opened_stream_id) {
+ /* careful not to override rv */
+ int rv2;
+ rv2 = nghttp2_session_close_stream(session, opened_stream_id,
+ error_code);
+
+ if (nghttp2_is_fatal(rv2)) {
+ return rv2;
+ }
+ }
+
+ nghttp2_outbound_item_free(item, mem);
+ nghttp2_mem_free(mem, item);
+ active_outbound_item_reset(aob, mem);
+
+ if (rv == NGHTTP2_ERR_HEADER_COMP) {
+ /* If header compression error occurred, should terminiate
+ connection. */
+ rv = nghttp2_session_terminate_session(session,
+ NGHTTP2_INTERNAL_ERROR);
+ }
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ break;
+ }
+
+ aob->item = item;
+
+ nghttp2_bufs_rewind(framebufs);
+
+ if (item->frame.hd.type != NGHTTP2_DATA) {
+ nghttp2_frame *frame;
+
+ frame = &item->frame;
+
+ DEBUGF(fprintf(stderr, "send: next frame: payloadlen=%zu, type=%u, "
+ "flags=0x%02x, stream_id=%d\n",
+ frame->hd.length, frame->hd.type, frame->hd.flags,
+ frame->hd.stream_id));
+
+ rv = session_call_before_frame_send(session, frame);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ if (rv == NGHTTP2_ERR_CANCEL) {
+ int32_t opened_stream_id = 0;
+ uint32_t error_code = NGHTTP2_INTERNAL_ERROR;
+
+ if (session->callbacks.on_frame_not_send_callback) {
+ if (session->callbacks.on_frame_not_send_callback(
+ session, frame, rv, session->user_data) != 0) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ }
+
+ /* We have to close stream opened by canceled request
+ HEADERS or PUSH_PROMISE. */
+ switch (item->frame.hd.type) {
+ case NGHTTP2_HEADERS:
+ if (item->frame.headers.cat == NGHTTP2_HCAT_REQUEST) {
+ opened_stream_id = item->frame.hd.stream_id;
+ /* We don't have to check
+ item->aux_data.headers.canceled since it has already
+ been checked. */
+ /* Set error_code to REFUSED_STREAM so that application
+ can send request again. */
+ error_code = NGHTTP2_REFUSED_STREAM;
+ }
+ break;
+ case NGHTTP2_PUSH_PROMISE:
+ opened_stream_id = item->frame.push_promise.promised_stream_id;
+ break;
+ }
+ if (opened_stream_id) {
+ /* careful not to override rv */
+ int rv2;
+ rv2 = nghttp2_session_close_stream(session, opened_stream_id,
+ error_code);
+
+ if (nghttp2_is_fatal(rv2)) {
+ return rv2;
+ }
+ }
+
+ active_outbound_item_reset(aob, mem);
+
+ break;
+ }
+ } else {
+ DEBUGF(fprintf(stderr, "send: next frame: DATA\n"));
+
+ if (item->aux_data.data.no_copy) {
+ aob->state = NGHTTP2_OB_SEND_NO_COPY;
+ break;
+ }
+ }
+
+ DEBUGF(fprintf(stderr,
+ "send: start transmitting frame type=%u, length=%zd\n",
+ framebufs->cur->buf.pos[3],
+ framebufs->cur->buf.last - framebufs->cur->buf.pos));
+
+ aob->state = NGHTTP2_OB_SEND_DATA;
+
+ break;
+ }
+ case NGHTTP2_OB_SEND_DATA: {
+ size_t datalen;
+ nghttp2_buf *buf;
+
+ buf = &framebufs->cur->buf;
+
+ if (buf->pos == buf->last) {
+ DEBUGF(fprintf(stderr, "send: end transmission of a frame\n"));
+
+ /* Frame has completely sent */
+ if (fast_cb) {
+ rv = session_after_frame_sent2(session);
+ } else {
+ rv = session_after_frame_sent1(session);
+ if (rv < 0) {
+ /* FATAL */
+ assert(nghttp2_is_fatal(rv));
+ return rv;
+ }
+ rv = session_after_frame_sent2(session);
+ }
+ if (rv < 0) {
+ /* FATAL */
+ assert(nghttp2_is_fatal(rv));
+ return rv;
+ }
+ /* We have already adjusted the next state */
+ break;
+ }
+
+ *data_ptr = buf->pos;
+ datalen = nghttp2_buf_len(buf);
+
+ /* We increment the offset here. If send_callback does not send
+ everything, we will adjust it. */
+ buf->pos += datalen;
+
+ return (ssize_t)datalen;
+ }
+ case NGHTTP2_OB_SEND_NO_COPY: {
+ nghttp2_stream *stream;
+ nghttp2_frame *frame;
+ int pause;
+
+ DEBUGF(fprintf(stderr, "send: no copy DATA\n"));
+
+ frame = &aob->item->frame;
+
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+ if (stream == NULL) {
+ DEBUGF(fprintf(
+ stderr,
+ "send: no copy DATA cancelled because stream was closed\n"));
+
+ active_outbound_item_reset(aob, mem);
+
+ break;
+ }
+
+ rv = session_call_send_data(session, aob->item, framebufs);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ if (rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) {
+ rv = nghttp2_stream_detach_item(stream);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ rv = nghttp2_session_add_rst_stream(session, frame->hd.stream_id,
+ NGHTTP2_INTERNAL_ERROR);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ active_outbound_item_reset(aob, mem);
+
+ break;
+ }
+
+ if (rv == NGHTTP2_ERR_WOULDBLOCK) {
+ return 0;
+ }
+
+ pause = (rv == NGHTTP2_ERR_PAUSE);
+
+ rv = session_after_frame_sent1(session);
+ if (rv < 0) {
+ assert(nghttp2_is_fatal(rv));
+ return rv;
+ }
+ rv = session_after_frame_sent2(session);
+ if (rv < 0) {
+ assert(nghttp2_is_fatal(rv));
+ return rv;
+ }
+
+ /* We have already adjusted the next state */
+
+ if (pause) {
+ return 0;
+ }
+
+ break;
+ }
+ case NGHTTP2_OB_SEND_CLIENT_MAGIC: {
+ size_t datalen;
+ nghttp2_buf *buf;
+
+ buf = &framebufs->cur->buf;
+
+ if (buf->pos == buf->last) {
+ DEBUGF(fprintf(stderr, "send: end transmission of client magic\n"));
+ active_outbound_item_reset(aob, mem);
+ break;
+ }
+
+ *data_ptr = buf->pos;
+ datalen = nghttp2_buf_len(buf);
+
+ buf->pos += datalen;
+
+ return (ssize_t)datalen;
+ }
+ }
+ }
+}
+
+ssize_t nghttp2_session_mem_send(nghttp2_session *session,
+ const uint8_t **data_ptr) {
+ int rv;
+ ssize_t len;
+
+ *data_ptr = NULL;
+
+ len = nghttp2_session_mem_send_internal(session, data_ptr, 1);
+ if (len <= 0) {
+ return len;
+ }
+
+ if (session->aob.item) {
+ /* We have to call session_after_frame_sent1 here to handle stream
+ closure upon transmission of frames. Otherwise, END_STREAM may
+ be reached to client before we call nghttp2_session_mem_send
+ again and we may get exceeding number of incoming streams. */
+ rv = session_after_frame_sent1(session);
+ if (rv < 0) {
+ assert(nghttp2_is_fatal(rv));
+ return (ssize_t)rv;
+ }
+ }
+
+ return len;
+}
+
+int nghttp2_session_send(nghttp2_session *session) {
+ const uint8_t *data = NULL;
+ ssize_t datalen;
+ ssize_t sentlen;
+ nghttp2_bufs *framebufs;
+
+ framebufs = &session->aob.framebufs;
+
+ for (;;) {
+ datalen = nghttp2_session_mem_send_internal(session, &data, 0);
+ if (datalen <= 0) {
+ return (int)datalen;
+ }
+ sentlen = session->callbacks.send_callback(session, data, (size_t)datalen,
+ 0, session->user_data);
+ if (sentlen < 0) {
+ if (sentlen == NGHTTP2_ERR_WOULDBLOCK) {
+ /* Transmission canceled. Rewind the offset */
+ framebufs->cur->buf.pos -= datalen;
+
+ return 0;
+ }
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ /* Rewind the offset to the amount of unsent bytes */
+ framebufs->cur->buf.pos -= datalen - sentlen;
+ }
+}
+
+static ssize_t session_recv(nghttp2_session *session, uint8_t *buf,
+ size_t len) {
+ ssize_t rv;
+ rv = session->callbacks.recv_callback(session, buf, len, 0,
+ session->user_data);
+ if (rv > 0) {
+ if ((size_t)rv > len) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ } else if (rv < 0 && rv != NGHTTP2_ERR_WOULDBLOCK && rv != NGHTTP2_ERR_EOF) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ return rv;
+}
+
+static int session_call_on_begin_frame(nghttp2_session *session,
+ const nghttp2_frame_hd *hd) {
+ int rv;
+
+ if (session->callbacks.on_begin_frame_callback) {
+
+ rv = session->callbacks.on_begin_frame_callback(session, hd,
+ session->user_data);
+
+ if (rv != 0) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ }
+
+ return 0;
+}
+
+static int session_call_on_frame_received(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ int rv;
+ if (session->callbacks.on_frame_recv_callback) {
+ rv = session->callbacks.on_frame_recv_callback(session, frame,
+ session->user_data);
+ if (rv != 0) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ }
+ return 0;
+}
+
+static int session_call_on_begin_headers(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ int rv;
+ DEBUGF(fprintf(stderr, "recv: call on_begin_headers callback stream_id=%d\n",
+ frame->hd.stream_id));
+ if (session->callbacks.on_begin_headers_callback) {
+ rv = session->callbacks.on_begin_headers_callback(session, frame,
+ session->user_data);
+ if (rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) {
+ return rv;
+ }
+ if (rv != 0) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ }
+ return 0;
+}
+
+static int session_call_on_header(nghttp2_session *session,
+ const nghttp2_frame *frame,
+ const nghttp2_hd_nv *nv) {
+ int rv = 0;
+ if (session->callbacks.on_header_callback2) {
+ rv = session->callbacks.on_header_callback2(
+ session, frame, nv->name, nv->value, nv->flags, session->user_data);
+ } else if (session->callbacks.on_header_callback) {
+ rv = session->callbacks.on_header_callback(
+ session, frame, nv->name->base, nv->name->len, nv->value->base,
+ nv->value->len, nv->flags, session->user_data);
+ }
+
+ if (rv == NGHTTP2_ERR_PAUSE || rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) {
+ return rv;
+ }
+ if (rv != 0) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+
+ return 0;
+}
+
+static int
+session_call_on_extension_chunk_recv_callback(nghttp2_session *session,
+ const uint8_t *data, size_t len) {
+ int rv;
+ nghttp2_inbound_frame *iframe = &session->iframe;
+ nghttp2_frame *frame = &iframe->frame;
+
+ if (session->callbacks.on_extension_chunk_recv_callback) {
+ rv = session->callbacks.on_extension_chunk_recv_callback(
+ session, &frame->hd, data, len, session->user_data);
+ if (rv == NGHTTP2_ERR_CANCEL) {
+ return rv;
+ }
+ if (rv != 0) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ }
+
+ return 0;
+}
+
+static int session_call_unpack_extension_callback(nghttp2_session *session) {
+ int rv;
+ nghttp2_inbound_frame *iframe = &session->iframe;
+ nghttp2_frame *frame = &iframe->frame;
+ void *payload = NULL;
+
+ rv = session->callbacks.unpack_extension_callback(
+ session, &payload, &frame->hd, session->user_data);
+ if (rv == NGHTTP2_ERR_CANCEL) {
+ return rv;
+ }
+ if (rv != 0) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+
+ frame->ext.payload = payload;
+
+ return 0;
+}
+
+/*
+ * Handles frame size error.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+static int session_handle_frame_size_error(nghttp2_session *session,
+ nghttp2_frame *frame _U_) {
+ /* TODO Currently no callback is called for this error, because we
+ call this callback before reading any payload */
+ return nghttp2_session_terminate_session(session, NGHTTP2_FRAME_SIZE_ERROR);
+}
+
+static uint32_t get_error_code_from_lib_error_code(int lib_error_code) {
+ switch (lib_error_code) {
+ case NGHTTP2_ERR_STREAM_CLOSED:
+ return NGHTTP2_STREAM_CLOSED;
+ case NGHTTP2_ERR_HEADER_COMP:
+ return NGHTTP2_COMPRESSION_ERROR;
+ case NGHTTP2_ERR_FRAME_SIZE_ERROR:
+ return NGHTTP2_FRAME_SIZE_ERROR;
+ case NGHTTP2_ERR_FLOW_CONTROL:
+ return NGHTTP2_FLOW_CONTROL_ERROR;
+ case NGHTTP2_ERR_REFUSED_STREAM:
+ return NGHTTP2_REFUSED_STREAM;
+ case NGHTTP2_ERR_PROTO:
+ case NGHTTP2_ERR_HTTP_HEADER:
+ case NGHTTP2_ERR_HTTP_MESSAGING:
+ return NGHTTP2_PROTOCOL_ERROR;
+ default:
+ return NGHTTP2_INTERNAL_ERROR;
+ }
+}
+
+static int session_handle_invalid_stream2(nghttp2_session *session,
+ int32_t stream_id,
+ nghttp2_frame *frame,
+ int lib_error_code) {
+ int rv;
+ rv = nghttp2_session_add_rst_stream(
+ session, stream_id, get_error_code_from_lib_error_code(lib_error_code));
+ if (rv != 0) {
+ return rv;
+ }
+ if (session->callbacks.on_invalid_frame_recv_callback) {
+ if (session->callbacks.on_invalid_frame_recv_callback(
+ session, frame, lib_error_code, session->user_data) != 0) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ }
+ return 0;
+}
+
+static int session_handle_invalid_stream(nghttp2_session *session,
+ nghttp2_frame *frame,
+ int lib_error_code) {
+ return session_handle_invalid_stream2(session, frame->hd.stream_id, frame,
+ lib_error_code);
+}
+
+static int session_inflate_handle_invalid_stream(nghttp2_session *session,
+ nghttp2_frame *frame,
+ int lib_error_code) {
+ int rv;
+ rv = session_handle_invalid_stream(session, frame, lib_error_code);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ return NGHTTP2_ERR_IGN_HEADER_BLOCK;
+}
+
+/*
+ * Handles invalid frame which causes connection error.
+ */
+static int session_handle_invalid_connection(nghttp2_session *session,
+ nghttp2_frame *frame,
+ int lib_error_code,
+ const char *reason) {
+ if (session->callbacks.on_invalid_frame_recv_callback) {
+ if (session->callbacks.on_invalid_frame_recv_callback(
+ session, frame, lib_error_code, session->user_data) != 0) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ }
+ return nghttp2_session_terminate_session_with_reason(
+ session, get_error_code_from_lib_error_code(lib_error_code), reason);
+}
+
+static int session_inflate_handle_invalid_connection(nghttp2_session *session,
+ nghttp2_frame *frame,
+ int lib_error_code,
+ const char *reason) {
+ int rv;
+ rv =
+ session_handle_invalid_connection(session, frame, lib_error_code, reason);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ return NGHTTP2_ERR_IGN_HEADER_BLOCK;
+}
+
+/*
+ * Inflates header block in the memory pointed by |in| with |inlen|
+ * bytes. If this function returns NGHTTP2_ERR_PAUSE, the caller must
+ * call this function again, until it returns 0 or one of negative
+ * error code. If |call_header_cb| is zero, the on_header_callback
+ * are not invoked and the function never return NGHTTP2_ERR_PAUSE. If
+ * the given |in| is the last chunk of header block, the |final| must
+ * be nonzero. If header block is successfully processed (which is
+ * indicated by the return value 0, NGHTTP2_ERR_PAUSE or
+ * NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE), the number of processed
+ * input bytes is assigned to the |*readlen_ptr|.
+ *
+ * This function return 0 if it succeeds, or one of the negative error
+ * codes:
+ *
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The callback function failed.
+ * NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE
+ * The callback returns this error code, indicating that this
+ * stream should be RST_STREAMed.
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ * NGHTTP2_ERR_PAUSE
+ * The callback function returned NGHTTP2_ERR_PAUSE
+ * NGHTTP2_ERR_HEADER_COMP
+ * Header decompression failed
+ */
+static int inflate_header_block(nghttp2_session *session, nghttp2_frame *frame,
+ size_t *readlen_ptr, uint8_t *in, size_t inlen,
+ int final, int call_header_cb) {
+ ssize_t proclen;
+ int rv;
+ int inflate_flags;
+ nghttp2_hd_nv nv;
+ nghttp2_stream *stream;
+ nghttp2_stream *subject_stream;
+ int trailer = 0;
+
+ *readlen_ptr = 0;
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+
+ if (frame->hd.type == NGHTTP2_PUSH_PROMISE) {
+ subject_stream = nghttp2_session_get_stream(
+ session, frame->push_promise.promised_stream_id);
+ } else {
+ subject_stream = stream;
+ trailer = session_trailer_headers(session, stream, frame);
+ }
+
+ DEBUGF(fprintf(stderr, "recv: decoding header block %zu bytes\n", inlen));
+ for (;;) {
+ inflate_flags = 0;
+ proclen = nghttp2_hd_inflate_hd_nv(&session->hd_inflater, &nv,
+ &inflate_flags, in, inlen, final);
+ if (nghttp2_is_fatal((int)proclen)) {
+ return (int)proclen;
+ }
+ if (proclen < 0) {
+ if (session->iframe.state == NGHTTP2_IB_READ_HEADER_BLOCK) {
+ if (subject_stream && subject_stream->state != NGHTTP2_STREAM_CLOSING) {
+ /* Adding RST_STREAM here is very important. It prevents
+ from invoking subsequent callbacks for the same stream
+ ID. */
+ rv = nghttp2_session_add_rst_stream(
+ session, subject_stream->stream_id, NGHTTP2_COMPRESSION_ERROR);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+ }
+ rv =
+ nghttp2_session_terminate_session(session, NGHTTP2_COMPRESSION_ERROR);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ return NGHTTP2_ERR_HEADER_COMP;
+ }
+ in += proclen;
+ inlen -= (size_t)proclen;
+ *readlen_ptr += (size_t)proclen;
+
+ DEBUGF(fprintf(stderr, "recv: proclen=%zd\n", proclen));
+
+ if (call_header_cb && (inflate_flags & NGHTTP2_HD_INFLATE_EMIT)) {
+ rv = 0;
+ if (subject_stream && session_enforce_http_messaging(session)) {
+ rv = nghttp2_http_on_header(session, subject_stream, frame, &nv,
+ trailer);
+ if (rv == NGHTTP2_ERR_HTTP_HEADER) {
+ DEBUGF(fprintf(
+ stderr, "recv: HTTP error: type=%u, id=%d, header %.*s: %.*s\n",
+ frame->hd.type, frame->hd.stream_id, (int)nv.name->len,
+ nv.name->base, (int)nv.value->len, nv.value->base));
+
+ rv = session_call_error_callback(
+ session, "Invalid HTTP header field was received: frame type: "
+ "%u, stream: %d, name: [%.*s], value: [%.*s]",
+ frame->hd.type, frame->hd.stream_id, (int)nv.name->len,
+ nv.name->base, (int)nv.value->len, nv.value->base);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ rv =
+ session_handle_invalid_stream2(session, subject_stream->stream_id,
+ frame, NGHTTP2_ERR_HTTP_HEADER);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
+ }
+
+ if (rv == NGHTTP2_ERR_IGN_HTTP_HEADER) {
+ /* Don't overwrite rv here */
+ int rv2;
+ /* header is ignored */
+ DEBUGF(fprintf(
+ stderr, "recv: HTTP ignored: type=%u, id=%d, header %.*s: %.*s\n",
+ frame->hd.type, frame->hd.stream_id, (int)nv.name->len,
+ nv.name->base, (int)nv.value->len, nv.value->base));
+
+ rv2 = session_call_error_callback(
+ session,
+ "Ignoring received invalid HTTP header field: frame type: "
+ "%u, stream: %d, name: [%.*s], value: [%.*s]",
+ frame->hd.type, frame->hd.stream_id, (int)nv.name->len,
+ nv.name->base, (int)nv.value->len, nv.value->base);
+
+ if (nghttp2_is_fatal(rv2)) {
+ return rv2;
+ }
+ }
+ }
+ if (rv == 0) {
+ rv = session_call_on_header(session, frame, &nv);
+ /* This handles NGHTTP2_ERR_PAUSE and
+ NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE as well */
+ if (rv != 0) {
+ return rv;
+ }
+ }
+ }
+ if (inflate_flags & NGHTTP2_HD_INFLATE_FINAL) {
+ nghttp2_hd_inflate_end_headers(&session->hd_inflater);
+ break;
+ }
+ if ((inflate_flags & NGHTTP2_HD_INFLATE_EMIT) == 0 && inlen == 0) {
+ break;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Call this function when HEADERS frame was completely received.
+ *
+ * This function returns 0 if it succeeds, or one of negative error
+ * codes:
+ *
+ * NGHTTP2_ERR_CALLBACK_FAILURE
+ * The callback function failed.
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+static int session_end_stream_headers_received(nghttp2_session *session,
+ nghttp2_frame *frame,
+ nghttp2_stream *stream) {
+ int rv;
+ if ((frame->hd.flags & NGHTTP2_FLAG_END_STREAM) == 0) {
+ return 0;
+ }
+
+ nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_RD);
+ rv = nghttp2_session_close_stream_if_shut_rdwr(session, stream);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ return 0;
+}
+
+static int session_after_header_block_received(nghttp2_session *session) {
+ int rv = 0;
+ int call_cb = 1;
+ nghttp2_frame *frame = &session->iframe.frame;
+ nghttp2_stream *stream;
+
+ /* We don't call on_frame_recv_callback if stream has been closed
+ already or being closed. */
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+ if (!stream || stream->state == NGHTTP2_STREAM_CLOSING) {
+ return 0;
+ }
+
+ if (session_enforce_http_messaging(session)) {
+ if (frame->hd.type == NGHTTP2_PUSH_PROMISE) {
+ nghttp2_stream *subject_stream;
+
+ subject_stream = nghttp2_session_get_stream(
+ session, frame->push_promise.promised_stream_id);
+ if (subject_stream) {
+ rv = nghttp2_http_on_request_headers(subject_stream, frame);
+ }
+ } else {
+ assert(frame->hd.type == NGHTTP2_HEADERS);
+ switch (frame->headers.cat) {
+ case NGHTTP2_HCAT_REQUEST:
+ rv = nghttp2_http_on_request_headers(stream, frame);
+ break;
+ case NGHTTP2_HCAT_RESPONSE:
+ case NGHTTP2_HCAT_PUSH_RESPONSE:
+ rv = nghttp2_http_on_response_headers(stream);
+ break;
+ case NGHTTP2_HCAT_HEADERS:
+ if (stream->http_flags & NGHTTP2_HTTP_FLAG_EXPECT_FINAL_RESPONSE) {
+ assert(!session->server);
+ rv = nghttp2_http_on_response_headers(stream);
+ } else {
+ rv = nghttp2_http_on_trailer_headers(stream, frame);
+ }
+ break;
+ default:
+ assert(0);
+ }
+ if (rv == 0 && (frame->hd.flags & NGHTTP2_FLAG_END_STREAM)) {
+ rv = nghttp2_http_on_remote_end_stream(stream);
+ }
+ }
+ if (rv != 0) {
+ int32_t stream_id;
+
+ if (frame->hd.type == NGHTTP2_PUSH_PROMISE) {
+ stream_id = frame->push_promise.promised_stream_id;
+ } else {
+ stream_id = frame->hd.stream_id;
+ }
+
+ call_cb = 0;
+
+ rv = session_handle_invalid_stream2(session, stream_id, frame,
+ NGHTTP2_ERR_HTTP_MESSAGING);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+ }
+
+ if (call_cb) {
+ rv = session_call_on_frame_received(session, frame);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+
+ if (frame->hd.type != NGHTTP2_HEADERS) {
+ return 0;
+ }
+
+ return session_end_stream_headers_received(session, frame, stream);
+}
+
+int nghttp2_session_on_request_headers_received(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ int rv = 0;
+ nghttp2_stream *stream;
+ if (frame->hd.stream_id == 0) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO, "request HEADERS: stream_id == 0");
+ }
+
+ /* If client recieves idle stream from server, it is invalid
+ regardless stream ID is even or odd. This is because client is
+ not expected to receive request from server. */
+ if (!session->server) {
+ if (session_detect_idle_stream(session, frame->hd.stream_id)) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO,
+ "request HEADERS: client received request");
+ }
+
+ return NGHTTP2_ERR_IGN_HEADER_BLOCK;
+ }
+
+ assert(session->server);
+
+ if (!session_is_new_peer_stream_id(session, frame->hd.stream_id)) {
+ if (frame->hd.stream_id == 0 ||
+ nghttp2_session_is_my_stream_id(session, frame->hd.stream_id)) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO,
+ "request HEADERS: invalid stream_id");
+ }
+
+ /* RFC 7540 says if an endpoint receives a HEADERS with invalid
+ * stream ID (e.g, numerically smaller than previous), it MUST
+ * issue connection error with error code PROTOCOL_ERROR. It is a
+ * bit hard to detect this, since we cannot remember all streams
+ * we observed so far.
+ *
+ * You might imagine this is really easy. But no. HTTP/2 is
+ * asynchronous protocol, and usually client and server do not
+ * share the complete picture of open/closed stream status. For
+ * example, after server sends RST_STREAM for a stream, client may
+ * send trailer HEADERS for that stream. If naive server detects
+ * that, and issued connection error, then it is a bug of server
+ * implementation since client is not wrong if it did not get
+ * RST_STREAM when it issued trailer HEADERS.
+ *
+ * For server session, we remember closed streams as long as the
+ * sum of closed streams and opened streams are under current max
+ * concurrent streams. We can use these closed streams to detect
+ * the error in some cases.
+ *
+ * If the stream cannot be found in either closed or opened
+ * streams, it is considered to be closed, or it has not exist
+ * (e.g., peer skipped sending the stream). Actually, it is
+ * impossible to detect which is which, since that information was
+ * lost forever. For these cases, we send back GOAWAY with
+ * PROTOCOL_ERROR.
+ *
+ * If the stream is found, and we know that it is in half closed
+ * (remote), or closed by peer's explicit action (e.g., received
+ * RST_STREAM from peer, or peer sends HEADERS/DATA frame with
+ * END_STREAM), getting new frame on that stream is clearly error.
+ * In this case, we send GOAWAY with error code STREAM_CLOSED.
+ *
+ * There is one corner case here. Server can change the max
+ * concurrent streams. The initial value of max concurrent
+ * streams is unlimited (NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS,
+ * which is UINT32_MAX). When sending out SETTINGS with
+ * MAX_CONCURRENT_STREAMS, we save its value as pending max
+ * concurrent streams, and use it as a cap to remember closed
+ * stream to save memory. This means that we might not sure that
+ * stream surely closed or has not exist when it is not found in
+ * closed or opened stream. To workaround this issue, we ignore
+ * incoming frame if the current max concurrent streams is
+ * NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS, and pending max
+ * concurrent streams is less than that.
+ */
+ stream = nghttp2_session_get_stream_raw(session, frame->hd.stream_id);
+
+ if (!stream) {
+ if (session->local_settings.max_concurrent_streams ==
+ NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS &&
+ session->pending_local_max_concurrent_stream <
+ NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS) {
+ return NGHTTP2_ERR_IGN_HEADER_BLOCK;
+ }
+
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO, "HEADERS: stream does not exist");
+ }
+
+ if (stream->shut_flags & NGHTTP2_SHUT_RD) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_STREAM_CLOSED, "HEADERS: stream closed");
+ }
+
+ return NGHTTP2_ERR_IGN_HEADER_BLOCK;
+ }
+ session->last_recv_stream_id = frame->hd.stream_id;
+
+ if (session_is_incoming_concurrent_streams_max(session)) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO,
+ "request HEADERS: max concurrent streams exceeded");
+ }
+
+ if (!session_allow_incoming_new_stream(session)) {
+ /* We just ignore stream after GOAWAY was sent */
+ return NGHTTP2_ERR_IGN_HEADER_BLOCK;
+ }
+
+ if (frame->headers.pri_spec.stream_id == frame->hd.stream_id) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO, "request HEADERS: depend on itself");
+ }
+
+ if (session_is_incoming_concurrent_streams_pending_max(session)) {
+ return session_inflate_handle_invalid_stream(session, frame,
+ NGHTTP2_ERR_REFUSED_STREAM);
+ }
+
+ stream = nghttp2_session_open_stream(
+ session, frame->hd.stream_id, NGHTTP2_STREAM_FLAG_NONE,
+ &frame->headers.pri_spec, NGHTTP2_STREAM_OPENING, NULL);
+ if (!stream) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ rv = nghttp2_session_adjust_closed_stream(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ session->last_proc_stream_id = session->last_recv_stream_id;
+
+ rv = session_call_on_begin_headers(session, frame);
+ if (rv != 0) {
+ return rv;
+ }
+ return 0;
+}
+
+int nghttp2_session_on_response_headers_received(nghttp2_session *session,
+ nghttp2_frame *frame,
+ nghttp2_stream *stream) {
+ int rv;
+ /* This function is only called if stream->state ==
+ NGHTTP2_STREAM_OPENING and stream_id is local side initiated. */
+ assert(stream->state == NGHTTP2_STREAM_OPENING &&
+ nghttp2_session_is_my_stream_id(session, frame->hd.stream_id));
+ if (frame->hd.stream_id == 0) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO, "response HEADERS: stream_id == 0");
+ }
+ if (stream->shut_flags & NGHTTP2_SHUT_RD) {
+ /* half closed (remote): from the spec:
+
+ If an endpoint receives additional frames for a stream that is
+ in this state it MUST respond with a stream error (Section
+ 5.4.2) of type STREAM_CLOSED.
+
+ We go further, and make it connection error.
+ */
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_STREAM_CLOSED, "HEADERS: stream closed");
+ }
+ stream->state = NGHTTP2_STREAM_OPENED;
+ rv = session_call_on_begin_headers(session, frame);
+ if (rv != 0) {
+ return rv;
+ }
+ return 0;
+}
+
+int nghttp2_session_on_push_response_headers_received(nghttp2_session *session,
+ nghttp2_frame *frame,
+ nghttp2_stream *stream) {
+ int rv = 0;
+ assert(stream->state == NGHTTP2_STREAM_RESERVED);
+ if (frame->hd.stream_id == 0) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO,
+ "push response HEADERS: stream_id == 0");
+ }
+
+ if (session->server) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO,
+ "HEADERS: no HEADERS allowed from client in reserved state");
+ }
+
+ if (session_is_incoming_concurrent_streams_max(session)) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO,
+ "push response HEADERS: max concurrent streams exceeded");
+ }
+
+ if (!session_allow_incoming_new_stream(session)) {
+ /* We don't accept new stream after GOAWAY was sent. */
+ return NGHTTP2_ERR_IGN_HEADER_BLOCK;
+ }
+
+ if (session_is_incoming_concurrent_streams_pending_max(session)) {
+ return session_inflate_handle_invalid_stream(session, frame,
+ NGHTTP2_ERR_REFUSED_STREAM);
+ }
+
+ nghttp2_stream_promise_fulfilled(stream);
+ if (!nghttp2_session_is_my_stream_id(session, stream->stream_id)) {
+ --session->num_incoming_reserved_streams;
+ }
+ ++session->num_incoming_streams;
+ rv = session_call_on_begin_headers(session, frame);
+ if (rv != 0) {
+ return rv;
+ }
+ return 0;
+}
+
+int nghttp2_session_on_headers_received(nghttp2_session *session,
+ nghttp2_frame *frame,
+ nghttp2_stream *stream) {
+ int rv = 0;
+ if (frame->hd.stream_id == 0) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO, "HEADERS: stream_id == 0");
+ }
+ if ((stream->shut_flags & NGHTTP2_SHUT_RD)) {
+ /* half closed (remote): from the spec:
+
+ If an endpoint receives additional frames for a stream that is
+ in this state it MUST respond with a stream error (Section
+ 5.4.2) of type STREAM_CLOSED.
+
+ we go further, and make it connection error.
+ */
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_STREAM_CLOSED, "HEADERS: stream closed");
+ }
+ if (nghttp2_session_is_my_stream_id(session, frame->hd.stream_id)) {
+ if (stream->state == NGHTTP2_STREAM_OPENED) {
+ rv = session_call_on_begin_headers(session, frame);
+ if (rv != 0) {
+ return rv;
+ }
+ return 0;
+ }
+
+ return NGHTTP2_ERR_IGN_HEADER_BLOCK;
+ }
+ /* If this is remote peer initiated stream, it is OK unless it
+ has sent END_STREAM frame already. But if stream is in
+ NGHTTP2_STREAM_CLOSING, we discard the frame. This is a race
+ condition. */
+ if (stream->state != NGHTTP2_STREAM_CLOSING) {
+ rv = session_call_on_begin_headers(session, frame);
+ if (rv != 0) {
+ return rv;
+ }
+ return 0;
+ }
+ return NGHTTP2_ERR_IGN_HEADER_BLOCK;
+}
+
+static int session_process_headers_frame(nghttp2_session *session) {
+ int rv;
+ nghttp2_inbound_frame *iframe = &session->iframe;
+ nghttp2_frame *frame = &iframe->frame;
+ nghttp2_stream *stream;
+
+ rv = nghttp2_frame_unpack_headers_payload(&frame->headers, iframe->sbuf.pos,
+ nghttp2_buf_len(&iframe->sbuf));
+
+ if (rv != 0) {
+ return nghttp2_session_terminate_session_with_reason(
+ session, NGHTTP2_PROTOCOL_ERROR, "HEADERS: could not unpack");
+ }
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+ if (!stream) {
+ frame->headers.cat = NGHTTP2_HCAT_REQUEST;
+ return nghttp2_session_on_request_headers_received(session, frame);
+ }
+
+ if (stream->state == NGHTTP2_STREAM_RESERVED) {
+ frame->headers.cat = NGHTTP2_HCAT_PUSH_RESPONSE;
+ return nghttp2_session_on_push_response_headers_received(session, frame,
+ stream);
+ }
+
+ if (stream->state == NGHTTP2_STREAM_OPENING &&
+ nghttp2_session_is_my_stream_id(session, frame->hd.stream_id)) {
+ frame->headers.cat = NGHTTP2_HCAT_RESPONSE;
+ return nghttp2_session_on_response_headers_received(session, frame, stream);
+ }
+
+ frame->headers.cat = NGHTTP2_HCAT_HEADERS;
+ return nghttp2_session_on_headers_received(session, frame, stream);
+}
+
+int nghttp2_session_on_priority_received(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ int rv;
+ nghttp2_stream *stream;
+
+ if (frame->hd.stream_id == 0) {
+ return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO,
+ "PRIORITY: stream_id == 0");
+ }
+
+ if (frame->priority.pri_spec.stream_id == frame->hd.stream_id) {
+ return nghttp2_session_terminate_session_with_reason(
+ session, NGHTTP2_PROTOCOL_ERROR, "depend on itself");
+ }
+
+ if (!session->server) {
+ /* Re-prioritization works only in server */
+ return session_call_on_frame_received(session, frame);
+ }
+
+ stream = nghttp2_session_get_stream_raw(session, frame->hd.stream_id);
+
+ if (!stream) {
+ /* PRIORITY against idle stream can create anchor node in
+ dependency tree. */
+ if (!session_detect_idle_stream(session, frame->hd.stream_id)) {
+ return 0;
+ }
+
+ stream = nghttp2_session_open_stream(
+ session, frame->hd.stream_id, NGHTTP2_STREAM_FLAG_NONE,
+ &frame->priority.pri_spec, NGHTTP2_STREAM_IDLE, NULL);
+
+ if (stream == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ rv = nghttp2_session_adjust_idle_stream(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ } else {
+ rv = nghttp2_session_reprioritize_stream(session, stream,
+ &frame->priority.pri_spec);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ rv = nghttp2_session_adjust_idle_stream(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+
+ return session_call_on_frame_received(session, frame);
+}
+
+static int session_process_priority_frame(nghttp2_session *session) {
+ nghttp2_inbound_frame *iframe = &session->iframe;
+ nghttp2_frame *frame = &iframe->frame;
+
+ nghttp2_frame_unpack_priority_payload(&frame->priority, iframe->sbuf.pos,
+ nghttp2_buf_len(&iframe->sbuf));
+
+ return nghttp2_session_on_priority_received(session, frame);
+}
+
+int nghttp2_session_on_rst_stream_received(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ int rv;
+ nghttp2_stream *stream;
+ if (frame->hd.stream_id == 0) {
+ return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO,
+ "RST_STREAM: stream_id == 0");
+ }
+
+ if (session_detect_idle_stream(session, frame->hd.stream_id)) {
+ return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO,
+ "RST_STREAM: stream in idle");
+ }
+
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+ if (stream) {
+ /* We may use stream->shut_flags for strict error checking. */
+ nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_RD);
+ }
+
+ rv = session_call_on_frame_received(session, frame);
+ if (rv != 0) {
+ return rv;
+ }
+ rv = nghttp2_session_close_stream(session, frame->hd.stream_id,
+ frame->rst_stream.error_code);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ return 0;
+}
+
+static int session_process_rst_stream_frame(nghttp2_session *session) {
+ nghttp2_inbound_frame *iframe = &session->iframe;
+ nghttp2_frame *frame = &iframe->frame;
+
+ nghttp2_frame_unpack_rst_stream_payload(&frame->rst_stream, iframe->sbuf.pos,
+ nghttp2_buf_len(&iframe->sbuf));
+
+ return nghttp2_session_on_rst_stream_received(session, frame);
+}
+
+static int update_remote_initial_window_size_func(nghttp2_map_entry *entry,
+ void *ptr) {
+ int rv;
+ nghttp2_update_window_size_arg *arg;
+ nghttp2_stream *stream;
+
+ arg = (nghttp2_update_window_size_arg *)ptr;
+ stream = (nghttp2_stream *)entry;
+
+ rv = nghttp2_stream_update_remote_initial_window_size(
+ stream, arg->new_window_size, arg->old_window_size);
+ if (rv != 0) {
+ return nghttp2_session_add_rst_stream(arg->session, stream->stream_id,
+ NGHTTP2_FLOW_CONTROL_ERROR);
+ }
+
+ /* If window size gets positive, push deferred DATA frame to
+ outbound queue. */
+ if (stream->remote_window_size > 0 &&
+ nghttp2_stream_check_deferred_by_flow_control(stream)) {
+
+ rv = nghttp2_stream_resume_deferred_item(
+ stream, NGHTTP2_STREAM_FLAG_DEFERRED_FLOW_CONTROL);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Updates the remote initial window size of all active streams. If
+ * error occurs, all streams may not be updated.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+static int
+session_update_remote_initial_window_size(nghttp2_session *session,
+ int32_t new_initial_window_size) {
+ nghttp2_update_window_size_arg arg;
+
+ arg.session = session;
+ arg.new_window_size = new_initial_window_size;
+ arg.old_window_size = (int32_t)session->remote_settings.initial_window_size;
+
+ return nghttp2_map_each(&session->streams,
+ update_remote_initial_window_size_func, &arg);
+}
+
+static int update_local_initial_window_size_func(nghttp2_map_entry *entry,
+ void *ptr) {
+ int rv;
+ nghttp2_update_window_size_arg *arg;
+ nghttp2_stream *stream;
+ arg = (nghttp2_update_window_size_arg *)ptr;
+ stream = (nghttp2_stream *)entry;
+ rv = nghttp2_stream_update_local_initial_window_size(
+ stream, arg->new_window_size, arg->old_window_size);
+ if (rv != 0) {
+ return nghttp2_session_add_rst_stream(arg->session, stream->stream_id,
+ NGHTTP2_FLOW_CONTROL_ERROR);
+ }
+ if (!(arg->session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE) &&
+ stream->window_update_queued == 0 &&
+ nghttp2_should_send_window_update(stream->local_window_size,
+ stream->recv_window_size)) {
+
+ rv = nghttp2_session_add_window_update(arg->session, NGHTTP2_FLAG_NONE,
+ stream->stream_id,
+ stream->recv_window_size);
+ if (rv != 0) {
+ return rv;
+ }
+
+ stream->recv_window_size = 0;
+ }
+ return 0;
+}
+
+/*
+ * Updates the local initial window size of all active streams. If
+ * error occurs, all streams may not be updated.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+static int
+session_update_local_initial_window_size(nghttp2_session *session,
+ int32_t new_initial_window_size,
+ int32_t old_initial_window_size) {
+ nghttp2_update_window_size_arg arg;
+ arg.session = session;
+ arg.new_window_size = new_initial_window_size;
+ arg.old_window_size = old_initial_window_size;
+ return nghttp2_map_each(&session->streams,
+ update_local_initial_window_size_func, &arg);
+}
+
+/*
+ * Apply SETTINGS values |iv| having |niv| elements to the local
+ * settings. We assumes that all values in |iv| is correct, since we
+ * validated them in nghttp2_session_add_settings() already.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_HEADER_COMP
+ * The header table size is out of range
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory
+ */
+int nghttp2_session_update_local_settings(nghttp2_session *session,
+ nghttp2_settings_entry *iv,
+ size_t niv) {
+ int rv;
+ size_t i;
+ int32_t new_initial_window_size = -1;
+ uint32_t header_table_size = 0;
+ uint32_t min_header_table_size = UINT32_MAX;
+ uint8_t header_table_size_seen = 0;
+ /* For NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE, use the value last
+ seen. For NGHTTP2_SETTINGS_HEADER_TABLE_SIZE, use both minimum
+ value and last seen value. */
+ for (i = 0; i < niv; ++i) {
+ switch (iv[i].settings_id) {
+ case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE:
+ header_table_size_seen = 1;
+ header_table_size = iv[i].value;
+ min_header_table_size = nghttp2_min(min_header_table_size, iv[i].value);
+ break;
+ case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE:
+ new_initial_window_size = (int32_t)iv[i].value;
+ break;
+ }
+ }
+ if (header_table_size_seen) {
+ if (min_header_table_size < header_table_size) {
+ rv = nghttp2_hd_inflate_change_table_size(&session->hd_inflater,
+ min_header_table_size);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+
+ rv = nghttp2_hd_inflate_change_table_size(&session->hd_inflater,
+ header_table_size);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+ if (new_initial_window_size != -1) {
+ rv = session_update_local_initial_window_size(
+ session, new_initial_window_size,
+ (int32_t)session->local_settings.initial_window_size);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+
+ for (i = 0; i < niv; ++i) {
+ switch (iv[i].settings_id) {
+ case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE:
+ session->local_settings.header_table_size = iv[i].value;
+ break;
+ case NGHTTP2_SETTINGS_ENABLE_PUSH:
+ session->local_settings.enable_push = iv[i].value;
+ break;
+ case NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS:
+ session->local_settings.max_concurrent_streams = iv[i].value;
+ break;
+ case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE:
+ session->local_settings.initial_window_size = iv[i].value;
+ break;
+ case NGHTTP2_SETTINGS_MAX_FRAME_SIZE:
+ session->local_settings.max_frame_size = iv[i].value;
+ break;
+ case NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE:
+ session->local_settings.max_header_list_size = iv[i].value;
+ break;
+ }
+ }
+
+ return 0;
+}
+
+int nghttp2_session_on_settings_received(nghttp2_session *session,
+ nghttp2_frame *frame, int noack) {
+ int rv;
+ size_t i;
+ nghttp2_mem *mem;
+ nghttp2_inflight_settings *settings;
+
+ mem = &session->mem;
+
+ if (frame->hd.stream_id != 0) {
+ return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO,
+ "SETTINGS: stream_id != 0");
+ }
+ if (frame->hd.flags & NGHTTP2_FLAG_ACK) {
+ if (frame->settings.niv != 0) {
+ return session_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_FRAME_SIZE_ERROR,
+ "SETTINGS: ACK and payload != 0");
+ }
+
+ settings = session->inflight_settings_head;
+
+ if (!settings) {
+ return session_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO, "SETTINGS: unexpected ACK");
+ }
+
+ rv = nghttp2_session_update_local_settings(session, settings->iv,
+ settings->niv);
+
+ session->inflight_settings_head = settings->next;
+
+ inflight_settings_del(settings, mem);
+
+ if (rv != 0) {
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ return session_handle_invalid_connection(session, frame, rv, NULL);
+ }
+ return session_call_on_frame_received(session, frame);
+ }
+
+ for (i = 0; i < frame->settings.niv; ++i) {
+ nghttp2_settings_entry *entry = &frame->settings.iv[i];
+
+ switch (entry->settings_id) {
+ case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE:
+
+ rv = nghttp2_hd_deflate_change_table_size(&session->hd_deflater,
+ entry->value);
+ if (rv != 0) {
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ } else {
+ return session_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_HEADER_COMP, NULL);
+ }
+ }
+
+ session->remote_settings.header_table_size = entry->value;
+
+ break;
+ case NGHTTP2_SETTINGS_ENABLE_PUSH:
+
+ if (entry->value != 0 && entry->value != 1) {
+ return session_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO,
+ "SETTINGS: invalid SETTINGS_ENBLE_PUSH");
+ }
+
+ if (!session->server && entry->value != 0) {
+ return session_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO,
+ "SETTINGS: server attempted to enable push");
+ }
+
+ session->remote_settings.enable_push = entry->value;
+
+ break;
+ case NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS:
+
+ session->remote_settings.max_concurrent_streams = entry->value;
+
+ break;
+ case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE:
+
+ /* Update the initial window size of the all active streams */
+ /* Check that initial_window_size < (1u << 31) */
+ if (entry->value > NGHTTP2_MAX_WINDOW_SIZE) {
+ return session_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_FLOW_CONTROL,
+ "SETTINGS: too large SETTINGS_INITIAL_WINDOW_SIZE");
+ }
+
+ rv = session_update_remote_initial_window_size(session,
+ (int32_t)entry->value);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ if (rv != 0) {
+ return session_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_FLOW_CONTROL, NULL);
+ }
+
+ session->remote_settings.initial_window_size = entry->value;
+
+ break;
+ case NGHTTP2_SETTINGS_MAX_FRAME_SIZE:
+
+ if (entry->value < NGHTTP2_MAX_FRAME_SIZE_MIN ||
+ entry->value > NGHTTP2_MAX_FRAME_SIZE_MAX) {
+ return session_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO,
+ "SETTINGS: invalid SETTINGS_MAX_FRAME_SIZE");
+ }
+
+ session->remote_settings.max_frame_size = entry->value;
+
+ break;
+ case NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE:
+
+ session->remote_settings.max_header_list_size = entry->value;
+
+ break;
+ }
+ }
+
+ if (!noack && !session_is_closing(session)) {
+ rv = nghttp2_session_add_settings(session, NGHTTP2_FLAG_ACK, NULL, 0);
+
+ if (rv != 0) {
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ return session_handle_invalid_connection(session, frame,
+ NGHTTP2_ERR_INTERNAL, NULL);
+ }
+ }
+
+ return session_call_on_frame_received(session, frame);
+}
+
+static int session_process_settings_frame(nghttp2_session *session) {
+ nghttp2_inbound_frame *iframe = &session->iframe;
+ nghttp2_frame *frame = &iframe->frame;
+ size_t i;
+ nghttp2_settings_entry min_header_size_entry;
+
+ if (iframe->max_niv) {
+ min_header_size_entry = iframe->iv[iframe->max_niv - 1];
+
+ if (min_header_size_entry.value < UINT32_MAX) {
+ /* If we have less value, then we must have
+ SETTINGS_HEADER_TABLE_SIZE in i < iframe->niv */
+ for (i = 0; i < iframe->niv; ++i) {
+ if (iframe->iv[i].settings_id == NGHTTP2_SETTINGS_HEADER_TABLE_SIZE) {
+ break;
+ }
+ }
+
+ assert(i < iframe->niv);
+
+ if (min_header_size_entry.value != iframe->iv[i].value) {
+ iframe->iv[iframe->niv++] = iframe->iv[i];
+ iframe->iv[i] = min_header_size_entry;
+ }
+ }
+ }
+
+ nghttp2_frame_unpack_settings_payload(&frame->settings, iframe->iv,
+ iframe->niv);
+
+ iframe->iv = NULL;
+ iframe->niv = 0;
+ iframe->max_niv = 0;
+
+ return nghttp2_session_on_settings_received(session, frame, 0 /* ACK */);
+}
+
+int nghttp2_session_on_push_promise_received(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ int rv;
+ nghttp2_stream *stream;
+ nghttp2_stream *promised_stream;
+ nghttp2_priority_spec pri_spec;
+
+ if (frame->hd.stream_id == 0) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO, "PUSH_PROMISE: stream_id == 0");
+ }
+ if (session->server || session->local_settings.enable_push == 0) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO, "PUSH_PROMISE: push disabled");
+ }
+
+ if (!nghttp2_session_is_my_stream_id(session, frame->hd.stream_id)) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO, "PUSH_PROMISE: invalid stream_id");
+ }
+
+ if (!session_allow_incoming_new_stream(session)) {
+ /* We just discard PUSH_PROMISE after GOAWAY was sent */
+ return NGHTTP2_ERR_IGN_HEADER_BLOCK;
+ }
+
+ if (!session_is_new_peer_stream_id(session,
+ frame->push_promise.promised_stream_id)) {
+ /* The spec says if an endpoint receives a PUSH_PROMISE with
+ illegal stream ID is subject to a connection error of type
+ PROTOCOL_ERROR. */
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO,
+ "PUSH_PROMISE: invalid promised_stream_id");
+ }
+
+ if (session_detect_idle_stream(session, frame->hd.stream_id)) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO, "PUSH_PROMISE: stream in idle");
+ }
+
+ session->last_recv_stream_id = frame->push_promise.promised_stream_id;
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+ if (!stream || stream->state == NGHTTP2_STREAM_CLOSING ||
+ !session->pending_enable_push ||
+ session->num_incoming_reserved_streams >=
+ session->max_incoming_reserved_streams) {
+ /* Currently, client does not retain closed stream, so we don't
+ check NGHTTP2_SHUT_RD condition here. */
+
+ rv = nghttp2_session_add_rst_stream(
+ session, frame->push_promise.promised_stream_id, NGHTTP2_CANCEL);
+ if (rv != 0) {
+ return rv;
+ }
+ return NGHTTP2_ERR_IGN_HEADER_BLOCK;
+ }
+
+ if (stream->shut_flags & NGHTTP2_SHUT_RD) {
+ return session_inflate_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_STREAM_CLOSED,
+ "PUSH_PROMISE: stream closed");
+ }
+
+ nghttp2_priority_spec_init(&pri_spec, stream->stream_id,
+ NGHTTP2_DEFAULT_WEIGHT, 0);
+
+ promised_stream = nghttp2_session_open_stream(
+ session, frame->push_promise.promised_stream_id, NGHTTP2_STREAM_FLAG_NONE,
+ &pri_spec, NGHTTP2_STREAM_RESERVED, NULL);
+
+ if (!promised_stream) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ /* We don't call nghttp2_session_adjust_closed_stream(), since we
+ don't keep closed stream in client side */
+
+ session->last_proc_stream_id = session->last_recv_stream_id;
+ rv = session_call_on_begin_headers(session, frame);
+ if (rv != 0) {
+ return rv;
+ }
+ return 0;
+}
+
+static int session_process_push_promise_frame(nghttp2_session *session) {
+ int rv;
+ nghttp2_inbound_frame *iframe = &session->iframe;
+ nghttp2_frame *frame = &iframe->frame;
+
+ rv = nghttp2_frame_unpack_push_promise_payload(
+ &frame->push_promise, iframe->sbuf.pos, nghttp2_buf_len(&iframe->sbuf));
+
+ if (rv != 0) {
+ return nghttp2_session_terminate_session_with_reason(
+ session, NGHTTP2_PROTOCOL_ERROR, "PUSH_PROMISE: could not unpack");
+ }
+
+ return nghttp2_session_on_push_promise_received(session, frame);
+}
+
+int nghttp2_session_on_ping_received(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ int rv = 0;
+ if (frame->hd.stream_id != 0) {
+ return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO,
+ "PING: stream_id != 0");
+ }
+ if ((session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_PING_ACK) == 0 &&
+ (frame->hd.flags & NGHTTP2_FLAG_ACK) == 0 &&
+ !session_is_closing(session)) {
+ /* Peer sent ping, so ping it back */
+ rv = nghttp2_session_add_ping(session, NGHTTP2_FLAG_ACK,
+ frame->ping.opaque_data);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+ return session_call_on_frame_received(session, frame);
+}
+
+static int session_process_ping_frame(nghttp2_session *session) {
+ nghttp2_inbound_frame *iframe = &session->iframe;
+ nghttp2_frame *frame = &iframe->frame;
+
+ nghttp2_frame_unpack_ping_payload(&frame->ping, iframe->sbuf.pos,
+ nghttp2_buf_len(&iframe->sbuf));
+
+ return nghttp2_session_on_ping_received(session, frame);
+}
+
+int nghttp2_session_on_goaway_received(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ int rv;
+
+ if (frame->hd.stream_id != 0) {
+ return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO,
+ "GOAWAY: stream_id != 0");
+ }
+ /* Spec says Endpoints MUST NOT increase the value they send in the
+ last stream identifier. */
+ if ((frame->goaway.last_stream_id > 0 &&
+ !nghttp2_session_is_my_stream_id(session,
+ frame->goaway.last_stream_id)) ||
+ session->remote_last_stream_id < frame->goaway.last_stream_id) {
+ return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO,
+ "GOAWAY: invalid last_stream_id");
+ }
+
+ session->goaway_flags |= NGHTTP2_GOAWAY_RECV;
+
+ session->remote_last_stream_id = frame->goaway.last_stream_id;
+
+ rv = session_call_on_frame_received(session, frame);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ return session_close_stream_on_goaway(session, frame->goaway.last_stream_id,
+ 0);
+}
+
+static int session_process_goaway_frame(nghttp2_session *session) {
+ nghttp2_inbound_frame *iframe = &session->iframe;
+ nghttp2_frame *frame = &iframe->frame;
+
+ nghttp2_frame_unpack_goaway_payload(
+ &frame->goaway, iframe->sbuf.pos, nghttp2_buf_len(&iframe->sbuf),
+ iframe->lbuf.pos, nghttp2_buf_len(&iframe->lbuf));
+
+ nghttp2_buf_wrap_init(&iframe->lbuf, NULL, 0);
+
+ return nghttp2_session_on_goaway_received(session, frame);
+}
+
+static int
+session_on_connection_window_update_received(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ /* Handle connection-level flow control */
+ if (frame->window_update.window_size_increment == 0) {
+ return session_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO,
+ "WINDOW_UPDATE: window_size_increment == 0");
+ }
+
+ if (NGHTTP2_MAX_WINDOW_SIZE - frame->window_update.window_size_increment <
+ session->remote_window_size) {
+ return session_handle_invalid_connection(session, frame,
+ NGHTTP2_ERR_FLOW_CONTROL, NULL);
+ }
+ session->remote_window_size += frame->window_update.window_size_increment;
+
+ return session_call_on_frame_received(session, frame);
+}
+
+static int session_on_stream_window_update_received(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ int rv;
+ nghttp2_stream *stream;
+
+ if (session_detect_idle_stream(session, frame->hd.stream_id)) {
+ return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO,
+ "WINDOW_UPDATE to idle stream");
+ }
+
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+ if (!stream) {
+ return 0;
+ }
+ if (state_reserved_remote(session, stream)) {
+ return session_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO, "WINDOW_UPADATE to reserved stream");
+ }
+ if (frame->window_update.window_size_increment == 0) {
+ return session_handle_invalid_connection(
+ session, frame, NGHTTP2_ERR_PROTO,
+ "WINDOW_UPDATE: window_size_increment == 0");
+ }
+ if (NGHTTP2_MAX_WINDOW_SIZE - frame->window_update.window_size_increment <
+ stream->remote_window_size) {
+ return session_handle_invalid_stream(session, frame,
+ NGHTTP2_ERR_FLOW_CONTROL);
+ }
+ stream->remote_window_size += frame->window_update.window_size_increment;
+
+ if (stream->remote_window_size > 0 &&
+ nghttp2_stream_check_deferred_by_flow_control(stream)) {
+
+ rv = nghttp2_stream_resume_deferred_item(
+ stream, NGHTTP2_STREAM_FLAG_DEFERRED_FLOW_CONTROL);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+ return session_call_on_frame_received(session, frame);
+}
+
+int nghttp2_session_on_window_update_received(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ if (frame->hd.stream_id == 0) {
+ return session_on_connection_window_update_received(session, frame);
+ } else {
+ return session_on_stream_window_update_received(session, frame);
+ }
+}
+
+static int session_process_window_update_frame(nghttp2_session *session) {
+ nghttp2_inbound_frame *iframe = &session->iframe;
+ nghttp2_frame *frame = &iframe->frame;
+
+ nghttp2_frame_unpack_window_update_payload(
+ &frame->window_update, iframe->sbuf.pos, nghttp2_buf_len(&iframe->sbuf));
+
+ return nghttp2_session_on_window_update_received(session, frame);
+}
+
+int nghttp2_session_on_altsvc_received(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ nghttp2_ext_altsvc *altsvc;
+ nghttp2_stream *stream;
+
+ altsvc = frame->ext.payload;
+
+ /* session->server case has been excluded */
+
+ if (frame->hd.stream_id == 0) {
+ if (altsvc->origin_len == 0) {
+ return 0;
+ }
+ } else {
+ if (altsvc->origin_len > 0) {
+ return 0;
+ }
+
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+ if (!stream) {
+ return 0;
+ }
+
+ if (stream->state == NGHTTP2_STREAM_CLOSING) {
+ return 0;
+ }
+ }
+
+ return session_call_on_frame_received(session, frame);
+}
+
+static int session_process_altsvc_frame(nghttp2_session *session) {
+ nghttp2_inbound_frame *iframe = &session->iframe;
+ nghttp2_frame *frame = &iframe->frame;
+
+ nghttp2_frame_unpack_altsvc_payload(
+ &frame->ext, nghttp2_get_uint16(iframe->sbuf.pos), iframe->lbuf.pos,
+ nghttp2_buf_len(&iframe->lbuf));
+
+ /* nghttp2_frame_unpack_altsvc_payload steals buffer from
+ iframe->lbuf */
+ nghttp2_buf_wrap_init(&iframe->lbuf, NULL, 0);
+
+ return nghttp2_session_on_altsvc_received(session, frame);
+}
+
+static int session_process_extension_frame(nghttp2_session *session) {
+ int rv;
+ nghttp2_inbound_frame *iframe = &session->iframe;
+ nghttp2_frame *frame = &iframe->frame;
+
+ rv = session_call_unpack_extension_callback(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ /* This handles the case where rv == NGHTTP2_ERR_CANCEL as well */
+ if (rv != 0) {
+ return 0;
+ }
+
+ return session_call_on_frame_received(session, frame);
+}
+
+int nghttp2_session_on_data_received(nghttp2_session *session,
+ nghttp2_frame *frame) {
+ int rv = 0;
+ int call_cb = 1;
+ nghttp2_stream *stream;
+
+ /* We don't call on_frame_recv_callback if stream has been closed
+ already or being closed. */
+ stream = nghttp2_session_get_stream(session, frame->hd.stream_id);
+ if (!stream || stream->state == NGHTTP2_STREAM_CLOSING) {
+ /* This should be treated as stream error, but it results in lots
+ of RST_STREAM. So just ignore frame against nonexistent stream
+ for now. */
+ return 0;
+ }
+
+ if (session_enforce_http_messaging(session) &&
+ (frame->hd.flags & NGHTTP2_FLAG_END_STREAM)) {
+ if (nghttp2_http_on_remote_end_stream(stream) != 0) {
+ call_cb = 0;
+ rv = nghttp2_session_add_rst_stream(session, stream->stream_id,
+ NGHTTP2_PROTOCOL_ERROR);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+ }
+
+ if (call_cb) {
+ rv = session_call_on_frame_received(session, frame);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+
+ if (frame->hd.flags & NGHTTP2_FLAG_END_STREAM) {
+ nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_RD);
+ rv = nghttp2_session_close_stream_if_shut_rdwr(session, stream);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+ return 0;
+}
+
+/* For errors, this function only returns FATAL error. */
+static int session_process_data_frame(nghttp2_session *session) {
+ int rv;
+ nghttp2_frame *public_data_frame = &session->iframe.frame;
+ rv = nghttp2_session_on_data_received(session, public_data_frame);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ return 0;
+}
+
+/*
+ * Now we have SETTINGS synchronization, flow control error can be
+ * detected strictly. If DATA frame is received with length > 0 and
+ * current received window size + delta length is strictly larger than
+ * local window size, it is subject to FLOW_CONTROL_ERROR, so return
+ * -1. Note that local_window_size is calculated after SETTINGS ACK is
+ * received from peer, so peer must honor this limit. If the resulting
+ * recv_window_size is strictly larger than NGHTTP2_MAX_WINDOW_SIZE,
+ * return -1 too.
+ */
+static int adjust_recv_window_size(int32_t *recv_window_size_ptr, size_t delta,
+ int32_t local_window_size) {
+ if (*recv_window_size_ptr > local_window_size - (int32_t)delta ||
+ *recv_window_size_ptr > NGHTTP2_MAX_WINDOW_SIZE - (int32_t)delta) {
+ return -1;
+ }
+ *recv_window_size_ptr += (int32_t)delta;
+ return 0;
+}
+
+/*
+ * Accumulates received bytes |delta_size| for stream-level flow
+ * control and decides whether to send WINDOW_UPDATE to that stream.
+ * If NGHTTP2_OPT_NO_AUTO_WINDOW_UPDATE is set, WINDOW_UPDATE will not
+ * be sent.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+static int session_update_recv_stream_window_size(nghttp2_session *session,
+ nghttp2_stream *stream,
+ size_t delta_size,
+ int send_window_update) {
+ int rv;
+ rv = adjust_recv_window_size(&stream->recv_window_size, delta_size,
+ stream->local_window_size);
+ if (rv != 0) {
+ return nghttp2_session_add_rst_stream(session, stream->stream_id,
+ NGHTTP2_FLOW_CONTROL_ERROR);
+ }
+ /* We don't have to send WINDOW_UPDATE if the data received is the
+ last chunk in the incoming stream. */
+ /* We have to use local_settings here because it is the constraint
+ the remote endpoint should honor. */
+ if (send_window_update &&
+ !(session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE) &&
+ stream->window_update_queued == 0 &&
+ nghttp2_should_send_window_update(stream->local_window_size,
+ stream->recv_window_size)) {
+ rv = nghttp2_session_add_window_update(session, NGHTTP2_FLAG_NONE,
+ stream->stream_id,
+ stream->recv_window_size);
+ if (rv != 0) {
+ return rv;
+ }
+
+ stream->recv_window_size = 0;
+ }
+ return 0;
+}
+
+/*
+ * Accumulates received bytes |delta_size| for connection-level flow
+ * control and decides whether to send WINDOW_UPDATE to the
+ * connection. If NGHTTP2_OPT_NO_AUTO_WINDOW_UPDATE is set,
+ * WINDOW_UPDATE will not be sent.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+static int session_update_recv_connection_window_size(nghttp2_session *session,
+ size_t delta_size) {
+ int rv;
+ rv = adjust_recv_window_size(&session->recv_window_size, delta_size,
+ session->local_window_size);
+ if (rv != 0) {
+ return nghttp2_session_terminate_session(session,
+ NGHTTP2_FLOW_CONTROL_ERROR);
+ }
+ if (!(session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE) &&
+ session->window_update_queued == 0 &&
+ nghttp2_should_send_window_update(session->local_window_size,
+ session->recv_window_size)) {
+ /* Use stream ID 0 to update connection-level flow control
+ window */
+ rv = nghttp2_session_add_window_update(session, NGHTTP2_FLAG_NONE, 0,
+ session->recv_window_size);
+ if (rv != 0) {
+ return rv;
+ }
+
+ session->recv_window_size = 0;
+ }
+ return 0;
+}
+
+static int session_update_consumed_size(nghttp2_session *session,
+ int32_t *consumed_size_ptr,
+ int32_t *recv_window_size_ptr,
+ uint8_t window_update_queued,
+ int32_t stream_id, size_t delta_size,
+ int32_t local_window_size) {
+ int32_t recv_size;
+ int rv;
+
+ if ((size_t)*consumed_size_ptr > NGHTTP2_MAX_WINDOW_SIZE - delta_size) {
+ return nghttp2_session_terminate_session(session,
+ NGHTTP2_FLOW_CONTROL_ERROR);
+ }
+
+ *consumed_size_ptr += (int32_t)delta_size;
+
+ if (window_update_queued == 0) {
+ /* recv_window_size may be smaller than consumed_size, because it
+ may be decreased by negative value with
+ nghttp2_submit_window_update(). */
+ recv_size = nghttp2_min(*consumed_size_ptr, *recv_window_size_ptr);
+
+ if (nghttp2_should_send_window_update(local_window_size, recv_size)) {
+ rv = nghttp2_session_add_window_update(session, NGHTTP2_FLAG_NONE,
+ stream_id, recv_size);
+
+ if (rv != 0) {
+ return rv;
+ }
+
+ *recv_window_size_ptr -= recv_size;
+ *consumed_size_ptr -= recv_size;
+ }
+ }
+
+ return 0;
+}
+
+static int session_update_stream_consumed_size(nghttp2_session *session,
+ nghttp2_stream *stream,
+ size_t delta_size) {
+ return session_update_consumed_size(
+ session, &stream->consumed_size, &stream->recv_window_size,
+ stream->window_update_queued, stream->stream_id, delta_size,
+ stream->local_window_size);
+}
+
+static int session_update_connection_consumed_size(nghttp2_session *session,
+ size_t delta_size) {
+ return session_update_consumed_size(
+ session, &session->consumed_size, &session->recv_window_size,
+ session->window_update_queued, 0, delta_size, session->local_window_size);
+}
+
+/*
+ * Checks that we can receive the DATA frame for stream, which is
+ * indicated by |session->iframe.frame.hd.stream_id|. If it is a
+ * connection error situation, GOAWAY frame will be issued by this
+ * function.
+ *
+ * If the DATA frame is allowed, returns 0.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * negative error codes:
+ *
+ * NGHTTP2_ERR_IGN_PAYLOAD
+ * The reception of DATA frame is connection error; or should be
+ * ignored.
+ * NGHTTP2_ERR_NOMEM
+ * Out of memory.
+ */
+static int session_on_data_received_fail_fast(nghttp2_session *session) {
+ int rv;
+ nghttp2_stream *stream;
+ nghttp2_inbound_frame *iframe;
+ int32_t stream_id;
+ const char *failure_reason;
+ uint32_t error_code = NGHTTP2_PROTOCOL_ERROR;
+
+ iframe = &session->iframe;
+ stream_id = iframe->frame.hd.stream_id;
+
+ if (stream_id == 0) {
+ /* The spec says that if a DATA frame is received whose stream ID
+ is 0, the recipient MUST respond with a connection error of
+ type PROTOCOL_ERROR. */
+ failure_reason = "DATA: stream_id == 0";
+ goto fail;
+ }
+
+ if (session_detect_idle_stream(session, stream_id)) {
+ failure_reason = "DATA: stream in idle";
+ error_code = NGHTTP2_PROTOCOL_ERROR;
+ goto fail;
+ }
+
+ stream = nghttp2_session_get_stream(session, stream_id);
+ if (!stream) {
+ stream = nghttp2_session_get_stream_raw(session, stream_id);
+
+ if (!stream) {
+ if (session->server) {
+ if (session->local_settings.max_concurrent_streams ==
+ NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS &&
+ session->pending_local_max_concurrent_stream <
+ NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS) {
+ return NGHTTP2_ERR_IGN_PAYLOAD;
+ }
+
+ failure_reason = "DATA: stream does not exist";
+ error_code = NGHTTP2_PROTOCOL_ERROR;
+ goto fail;
+ }
+
+ return NGHTTP2_ERR_IGN_PAYLOAD;
+ }
+
+ if (stream->shut_flags & NGHTTP2_SHUT_RD) {
+ failure_reason = "DATA: stream closed";
+ error_code = NGHTTP2_STREAM_CLOSED;
+ goto fail;
+ }
+
+ return NGHTTP2_ERR_IGN_PAYLOAD;
+ }
+ if (stream->shut_flags & NGHTTP2_SHUT_RD) {
+ failure_reason = "DATA: stream in half-closed(remote)";
+ error_code = NGHTTP2_STREAM_CLOSED;
+ goto fail;
+ }
+
+ if (nghttp2_session_is_my_stream_id(session, stream_id)) {
+ if (stream->state == NGHTTP2_STREAM_CLOSING) {
+ return NGHTTP2_ERR_IGN_PAYLOAD;
+ }
+ if (stream->state != NGHTTP2_STREAM_OPENED) {
+ failure_reason = "DATA: stream not opened";
+ goto fail;
+ }
+ return 0;
+ }
+ if (stream->state == NGHTTP2_STREAM_RESERVED) {
+ failure_reason = "DATA: stream in reserved";
+ goto fail;
+ }
+ if (stream->state == NGHTTP2_STREAM_CLOSING) {
+ return NGHTTP2_ERR_IGN_PAYLOAD;
+ }
+ return 0;
+fail:
+ rv = nghttp2_session_terminate_session_with_reason(session, error_code,
+ failure_reason);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ return NGHTTP2_ERR_IGN_PAYLOAD;
+}
+
+static size_t inbound_frame_payload_readlen(nghttp2_inbound_frame *iframe,
+ const uint8_t *in,
+ const uint8_t *last) {
+ return nghttp2_min((size_t)(last - in), iframe->payloadleft);
+}
+
+/*
+ * Resets iframe->sbuf and advance its mark pointer by |left| bytes.
+ */
+static void inbound_frame_set_mark(nghttp2_inbound_frame *iframe, size_t left) {
+ nghttp2_buf_reset(&iframe->sbuf);
+ iframe->sbuf.mark += left;
+}
+
+static size_t inbound_frame_buf_read(nghttp2_inbound_frame *iframe,
+ const uint8_t *in, const uint8_t *last) {
+ size_t readlen;
+
+ readlen =
+ nghttp2_min((size_t)(last - in), nghttp2_buf_mark_avail(&iframe->sbuf));
+
+ iframe->sbuf.last = nghttp2_cpymem(iframe->sbuf.last, in, readlen);
+
+ return readlen;
+}
+
+/*
+ * Unpacks SETTINGS entry in iframe->sbuf.
+ */
+static void inbound_frame_set_settings_entry(nghttp2_inbound_frame *iframe) {
+ nghttp2_settings_entry iv;
+ nghttp2_settings_entry *min_header_table_size_entry;
+ size_t i;
+
+ nghttp2_frame_unpack_settings_entry(&iv, iframe->sbuf.pos);
+
+ switch (iv.settings_id) {
+ case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE:
+ case NGHTTP2_SETTINGS_ENABLE_PUSH:
+ case NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS:
+ case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE:
+ case NGHTTP2_SETTINGS_MAX_FRAME_SIZE:
+ case NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE:
+ break;
+ default:
+ DEBUGF(
+ fprintf(stderr, "recv: unknown settings id=0x%02x\n", iv.settings_id));
+
+ iframe->iv[iframe->niv++] = iv;
+
+ return;
+ }
+
+ for (i = 0; i < iframe->niv; ++i) {
+ if (iframe->iv[i].settings_id == iv.settings_id) {
+ iframe->iv[i] = iv;
+ break;
+ }
+ }
+
+ if (i == iframe->niv) {
+ iframe->iv[iframe->niv++] = iv;
+ }
+
+ if (iv.settings_id == NGHTTP2_SETTINGS_HEADER_TABLE_SIZE) {
+ /* Keep track of minimum value of SETTINGS_HEADER_TABLE_SIZE */
+ min_header_table_size_entry = &iframe->iv[iframe->max_niv - 1];
+
+ if (iv.value < min_header_table_size_entry->value) {
+ min_header_table_size_entry->value = iv.value;
+ }
+ }
+}
+
+/*
+ * Checks PADDED flags and set iframe->sbuf to read them accordingly.
+ * If padding is set, this function returns 1. If no padding is set,
+ * this function returns 0. On error, returns -1.
+ */
+static int inbound_frame_handle_pad(nghttp2_inbound_frame *iframe,
+ nghttp2_frame_hd *hd) {
+ if (hd->flags & NGHTTP2_FLAG_PADDED) {
+ if (hd->length < 1) {
+ return -1;
+ }
+ inbound_frame_set_mark(iframe, 1);
+ return 1;
+ }
+ DEBUGF(fprintf(stderr, "recv: no padding in payload\n"));
+ return 0;
+}
+
+/*
+ * Computes number of padding based on flags. This function returns
+ * the calculated length if it succeeds, or -1.
+ */
+static ssize_t inbound_frame_compute_pad(nghttp2_inbound_frame *iframe) {
+ size_t padlen;
+
+ /* 1 for Pad Length field */
+ padlen = (size_t)(iframe->sbuf.pos[0] + 1);
+
+ DEBUGF(fprintf(stderr, "recv: padlen=%zu\n", padlen));
+
+ /* We cannot use iframe->frame.hd.length because of CONTINUATION */
+ if (padlen - 1 > iframe->payloadleft) {
+ return -1;
+ }
+
+ iframe->padlen = padlen;
+
+ return (ssize_t)padlen;
+}
+
+/*
+ * This function returns the effective payload length in the data of
+ * length |readlen| when the remaning payload is |payloadleft|. The
+ * |payloadleft| does not include |readlen|. If padding was started
+ * strictly before this data chunk, this function returns -1.
+ */
+static ssize_t inbound_frame_effective_readlen(nghttp2_inbound_frame *iframe,
+ size_t payloadleft,
+ size_t readlen) {
+ size_t trail_padlen =
+ nghttp2_frame_trail_padlen(&iframe->frame, iframe->padlen);
+
+ if (trail_padlen > payloadleft) {
+ size_t padlen;
+ padlen = trail_padlen - payloadleft;
+ if (readlen < padlen) {
+ return -1;
+ }
+ return (ssize_t)(readlen - padlen);
+ }
+ return (ssize_t)(readlen);
+}
+
+ssize_t nghttp2_session_mem_recv(nghttp2_session *session, const uint8_t *in,
+ size_t inlen) {
+ const uint8_t *first = in, *last = in + inlen;
+ nghttp2_inbound_frame *iframe = &session->iframe;
+ size_t readlen;
+ ssize_t padlen;
+ int rv;
+ int busy = 0;
+ nghttp2_frame_hd cont_hd;
+ nghttp2_stream *stream;
+ size_t pri_fieldlen;
+ nghttp2_mem *mem;
+
+ DEBUGF(fprintf(stderr,
+ "recv: connection recv_window_size=%d, local_window=%d\n",
+ session->recv_window_size, session->local_window_size));
+
+ mem = &session->mem;
+
+ /* We may have idle streams more than we expect (e.g.,
+ nghttp2_session_change_stream_priority() or
+ nghttp2_session_create_idle_stream()). Adjust them here. */
+ rv = nghttp2_session_adjust_idle_stream(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ for (;;) {
+ switch (iframe->state) {
+ case NGHTTP2_IB_READ_CLIENT_MAGIC:
+ readlen = nghttp2_min(inlen, iframe->payloadleft);
+
+ if (memcmp(NGHTTP2_CLIENT_MAGIC + NGHTTP2_CLIENT_MAGIC_LEN -
+ iframe->payloadleft,
+ in, readlen) != 0) {
+ return NGHTTP2_ERR_BAD_CLIENT_MAGIC;
+ }
+
+ iframe->payloadleft -= readlen;
+ in += readlen;
+
+ if (iframe->payloadleft == 0) {
+ session_inbound_frame_reset(session);
+ iframe->state = NGHTTP2_IB_READ_FIRST_SETTINGS;
+ }
+
+ break;
+ case NGHTTP2_IB_READ_FIRST_SETTINGS:
+ DEBUGF(fprintf(stderr, "recv: [IB_READ_FIRST_SETTINGS]\n"));
+
+ readlen = inbound_frame_buf_read(iframe, in, last);
+ in += readlen;
+
+ if (nghttp2_buf_mark_avail(&iframe->sbuf)) {
+ return in - first;
+ }
+
+ if (iframe->sbuf.pos[3] != NGHTTP2_SETTINGS ||
+ (iframe->sbuf.pos[4] & NGHTTP2_FLAG_ACK)) {
+
+ iframe->state = NGHTTP2_IB_IGN_ALL;
+
+ rv = session_call_error_callback(
+ session, "Remote peer returned unexpected data while we expected "
+ "SETTINGS frame. Perhaps, peer does not support HTTP/2 "
+ "properly.");
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ rv = nghttp2_session_terminate_session_with_reason(
+ session, NGHTTP2_PROTOCOL_ERROR, "SETTINGS expected");
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ return (ssize_t)inlen;
+ }
+
+ iframe->state = NGHTTP2_IB_READ_HEAD;
+
+ /* Fall through */
+ case NGHTTP2_IB_READ_HEAD: {
+ int on_begin_frame_called = 0;
+
+ DEBUGF(fprintf(stderr, "recv: [IB_READ_HEAD]\n"));
+
+ readlen = inbound_frame_buf_read(iframe, in, last);
+ in += readlen;
+
+ if (nghttp2_buf_mark_avail(&iframe->sbuf)) {
+ return in - first;
+ }
+
+ nghttp2_frame_unpack_frame_hd(&iframe->frame.hd, iframe->sbuf.pos);
+ iframe->payloadleft = iframe->frame.hd.length;
+
+ DEBUGF(fprintf(stderr, "recv: payloadlen=%zu, type=%u, flags=0x%02x, "
+ "stream_id=%d\n",
+ iframe->frame.hd.length, iframe->frame.hd.type,
+ iframe->frame.hd.flags, iframe->frame.hd.stream_id));
+
+ if (iframe->frame.hd.length > session->local_settings.max_frame_size) {
+ DEBUGF(fprintf(stderr, "recv: length is too large %zu > %u\n",
+ iframe->frame.hd.length,
+ session->local_settings.max_frame_size));
+
+ busy = 1;
+
+ iframe->state = NGHTTP2_IB_IGN_PAYLOAD;
+
+ rv = nghttp2_session_terminate_session_with_reason(
+ session, NGHTTP2_FRAME_SIZE_ERROR, "too large frame size");
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ break;
+ }
+
+ switch (iframe->frame.hd.type) {
+ case NGHTTP2_DATA: {
+ DEBUGF(fprintf(stderr, "recv: DATA\n"));
+
+ iframe->frame.hd.flags &=
+ (NGHTTP2_FLAG_END_STREAM | NGHTTP2_FLAG_PADDED);
+ /* Check stream is open. If it is not open or closing,
+ ignore payload. */
+ busy = 1;
+
+ rv = session_on_data_received_fail_fast(session);
+ if (rv == NGHTTP2_ERR_IGN_PAYLOAD) {
+ DEBUGF(fprintf(stderr, "recv: DATA not allowed stream_id=%d\n",
+ iframe->frame.hd.stream_id));
+ iframe->state = NGHTTP2_IB_IGN_DATA;
+ break;
+ }
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ rv = inbound_frame_handle_pad(iframe, &iframe->frame.hd);
+ if (rv < 0) {
+ iframe->state = NGHTTP2_IB_IGN_DATA;
+ rv = nghttp2_session_terminate_session_with_reason(
+ session, NGHTTP2_PROTOCOL_ERROR,
+ "DATA: insufficient padding space");
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ break;
+ }
+
+ if (rv == 1) {
+ iframe->state = NGHTTP2_IB_READ_PAD_DATA;
+ break;
+ }
+
+ iframe->state = NGHTTP2_IB_READ_DATA;
+ break;
+ }
+ case NGHTTP2_HEADERS:
+
+ DEBUGF(fprintf(stderr, "recv: HEADERS\n"));
+
+ iframe->frame.hd.flags &=
+ (NGHTTP2_FLAG_END_STREAM | NGHTTP2_FLAG_END_HEADERS |
+ NGHTTP2_FLAG_PADDED | NGHTTP2_FLAG_PRIORITY);
+
+ rv = inbound_frame_handle_pad(iframe, &iframe->frame.hd);
+ if (rv < 0) {
+ busy = 1;
+
+ iframe->state = NGHTTP2_IB_IGN_PAYLOAD;
+
+ rv = nghttp2_session_terminate_session_with_reason(
+ session, NGHTTP2_PROTOCOL_ERROR,
+ "HEADERS: insufficient padding space");
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ break;
+ }
+
+ if (rv == 1) {
+ iframe->state = NGHTTP2_IB_READ_NBYTE;
+ break;
+ }
+
+ pri_fieldlen = nghttp2_frame_priority_len(iframe->frame.hd.flags);
+
+ if (pri_fieldlen > 0) {
+ if (iframe->payloadleft < pri_fieldlen) {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR;
+ break;
+ }
+
+ iframe->state = NGHTTP2_IB_READ_NBYTE;
+
+ inbound_frame_set_mark(iframe, pri_fieldlen);
+
+ break;
+ }
+
+ /* Call on_begin_frame_callback here because
+ session_process_headers_frame() may call
+ on_begin_headers_callback */
+ rv = session_call_on_begin_frame(session, &iframe->frame.hd);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ on_begin_frame_called = 1;
+
+ rv = session_process_headers_frame(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ busy = 1;
+
+ if (rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) {
+ rv = nghttp2_session_add_rst_stream(
+ session, iframe->frame.hd.stream_id, NGHTTP2_INTERNAL_ERROR);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK;
+ break;
+ }
+
+ if (rv == NGHTTP2_ERR_IGN_HEADER_BLOCK) {
+ iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK;
+ break;
+ }
+
+ iframe->state = NGHTTP2_IB_READ_HEADER_BLOCK;
+
+ break;
+ case NGHTTP2_PRIORITY:
+ DEBUGF(fprintf(stderr, "recv: PRIORITY\n"));
+
+ iframe->frame.hd.flags = NGHTTP2_FLAG_NONE;
+
+ if (iframe->payloadleft != NGHTTP2_PRIORITY_SPECLEN) {
+ busy = 1;
+
+ iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR;
+
+ break;
+ }
+
+ iframe->state = NGHTTP2_IB_READ_NBYTE;
+
+ inbound_frame_set_mark(iframe, NGHTTP2_PRIORITY_SPECLEN);
+
+ break;
+ case NGHTTP2_RST_STREAM:
+ case NGHTTP2_WINDOW_UPDATE:
+#ifdef DEBUGBUILD
+ switch (iframe->frame.hd.type) {
+ case NGHTTP2_RST_STREAM:
+ DEBUGF(fprintf(stderr, "recv: RST_STREAM\n"));
+ break;
+ case NGHTTP2_WINDOW_UPDATE:
+ DEBUGF(fprintf(stderr, "recv: WINDOW_UPDATE\n"));
+ break;
+ }
+#endif /* DEBUGBUILD */
+
+ iframe->frame.hd.flags = NGHTTP2_FLAG_NONE;
+
+ if (iframe->payloadleft != 4) {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR;
+ break;
+ }
+
+ iframe->state = NGHTTP2_IB_READ_NBYTE;
+
+ inbound_frame_set_mark(iframe, 4);
+
+ break;
+ case NGHTTP2_SETTINGS:
+ DEBUGF(fprintf(stderr, "recv: SETTINGS\n"));
+
+ iframe->frame.hd.flags &= NGHTTP2_FLAG_ACK;
+
+ if ((iframe->frame.hd.length % NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH) ||
+ ((iframe->frame.hd.flags & NGHTTP2_FLAG_ACK) &&
+ iframe->payloadleft > 0)) {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR;
+ break;
+ }
+
+ iframe->state = NGHTTP2_IB_READ_SETTINGS;
+
+ if (iframe->payloadleft) {
+ nghttp2_settings_entry *min_header_table_size_entry;
+
+ /* We allocate iv with addtional one entry, to store the
+ minimum header table size. */
+ iframe->max_niv =
+ iframe->frame.hd.length / NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH + 1;
+
+ iframe->iv = nghttp2_mem_malloc(mem, sizeof(nghttp2_settings_entry) *
+ iframe->max_niv);
+
+ if (!iframe->iv) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ min_header_table_size_entry = &iframe->iv[iframe->max_niv - 1];
+ min_header_table_size_entry->settings_id =
+ NGHTTP2_SETTINGS_HEADER_TABLE_SIZE;
+ min_header_table_size_entry->value = UINT32_MAX;
+
+ inbound_frame_set_mark(iframe, NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH);
+ break;
+ }
+
+ busy = 1;
+
+ inbound_frame_set_mark(iframe, 0);
+
+ break;
+ case NGHTTP2_PUSH_PROMISE:
+ DEBUGF(fprintf(stderr, "recv: PUSH_PROMISE\n"));
+
+ iframe->frame.hd.flags &=
+ (NGHTTP2_FLAG_END_HEADERS | NGHTTP2_FLAG_PADDED);
+
+ rv = inbound_frame_handle_pad(iframe, &iframe->frame.hd);
+ if (rv < 0) {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_IGN_PAYLOAD;
+ rv = nghttp2_session_terminate_session_with_reason(
+ session, NGHTTP2_PROTOCOL_ERROR,
+ "PUSH_PROMISE: insufficient padding space");
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ break;
+ }
+
+ if (rv == 1) {
+ iframe->state = NGHTTP2_IB_READ_NBYTE;
+ break;
+ }
+
+ if (iframe->payloadleft < 4) {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR;
+ break;
+ }
+
+ iframe->state = NGHTTP2_IB_READ_NBYTE;
+
+ inbound_frame_set_mark(iframe, 4);
+
+ break;
+ case NGHTTP2_PING:
+ DEBUGF(fprintf(stderr, "recv: PING\n"));
+
+ iframe->frame.hd.flags &= NGHTTP2_FLAG_ACK;
+
+ if (iframe->payloadleft != 8) {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR;
+ break;
+ }
+
+ iframe->state = NGHTTP2_IB_READ_NBYTE;
+ inbound_frame_set_mark(iframe, 8);
+
+ break;
+ case NGHTTP2_GOAWAY:
+ DEBUGF(fprintf(stderr, "recv: GOAWAY\n"));
+
+ iframe->frame.hd.flags = NGHTTP2_FLAG_NONE;
+
+ if (iframe->payloadleft < 8) {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR;
+ break;
+ }
+
+ iframe->state = NGHTTP2_IB_READ_NBYTE;
+ inbound_frame_set_mark(iframe, 8);
+
+ break;
+ case NGHTTP2_CONTINUATION:
+ DEBUGF(fprintf(stderr, "recv: unexpected CONTINUATION\n"));
+
+ /* Receiving CONTINUATION in this state are subject to
+ connection error of type PROTOCOL_ERROR */
+ rv = nghttp2_session_terminate_session_with_reason(
+ session, NGHTTP2_PROTOCOL_ERROR, "CONTINUATION: unexpected");
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ busy = 1;
+
+ iframe->state = NGHTTP2_IB_IGN_PAYLOAD;
+
+ break;
+ default:
+ DEBUGF(fprintf(stderr, "recv: extension frame\n"));
+
+ if (check_ext_type_set(session->user_recv_ext_types,
+ iframe->frame.hd.type)) {
+ if (!session->callbacks.unpack_extension_callback) {
+ /* Silently ignore unknown frame type. */
+
+ busy = 1;
+
+ iframe->state = NGHTTP2_IB_IGN_PAYLOAD;
+
+ break;
+ }
+
+ busy = 1;
+
+ iframe->state = NGHTTP2_IB_READ_EXTENSION_PAYLOAD;
+
+ break;
+ } else {
+ switch (iframe->frame.hd.type) {
+ case NGHTTP2_ALTSVC:
+ if ((session->builtin_recv_ext_types & NGHTTP2_TYPEMASK_ALTSVC) ==
+ 0) {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_IGN_PAYLOAD;
+ break;
+ }
+
+ DEBUGF(fprintf(stderr, "recv: ALTSVC\n"));
+
+ iframe->frame.hd.flags = NGHTTP2_FLAG_NONE;
+ iframe->frame.ext.payload = &iframe->ext_frame_payload.altsvc;
+
+ if (session->server) {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_IGN_PAYLOAD;
+ break;
+ }
+
+ if (iframe->payloadleft < 2) {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR;
+ break;
+ }
+
+ busy = 1;
+
+ iframe->state = NGHTTP2_IB_READ_NBYTE;
+ inbound_frame_set_mark(iframe, 2);
+
+ break;
+ default:
+ busy = 1;
+
+ iframe->state = NGHTTP2_IB_IGN_PAYLOAD;
+
+ break;
+ }
+ }
+ }
+
+ if (!on_begin_frame_called) {
+ switch (iframe->state) {
+ case NGHTTP2_IB_IGN_HEADER_BLOCK:
+ case NGHTTP2_IB_IGN_PAYLOAD:
+ case NGHTTP2_IB_FRAME_SIZE_ERROR:
+ case NGHTTP2_IB_IGN_DATA:
+ break;
+ default:
+ rv = session_call_on_begin_frame(session, &iframe->frame.hd);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+ }
+
+ break;
+ }
+ case NGHTTP2_IB_READ_NBYTE:
+ DEBUGF(fprintf(stderr, "recv: [IB_READ_NBYTE]\n"));
+
+ readlen = inbound_frame_buf_read(iframe, in, last);
+ in += readlen;
+ iframe->payloadleft -= readlen;
+
+ DEBUGF(fprintf(stderr, "recv: readlen=%zu, payloadleft=%zu, left=%zd\n",
+ readlen, iframe->payloadleft,
+ nghttp2_buf_mark_avail(&iframe->sbuf)));
+
+ if (nghttp2_buf_mark_avail(&iframe->sbuf)) {
+ return in - first;
+ }
+
+ switch (iframe->frame.hd.type) {
+ case NGHTTP2_HEADERS:
+ if (iframe->padlen == 0 &&
+ (iframe->frame.hd.flags & NGHTTP2_FLAG_PADDED)) {
+ padlen = inbound_frame_compute_pad(iframe);
+ if (padlen < 0) {
+ busy = 1;
+ rv = nghttp2_session_terminate_session_with_reason(
+ session, NGHTTP2_PROTOCOL_ERROR, "HEADERS: invalid padding");
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ iframe->state = NGHTTP2_IB_IGN_PAYLOAD;
+ break;
+ }
+ iframe->frame.headers.padlen = (size_t)padlen;
+
+ pri_fieldlen = nghttp2_frame_priority_len(iframe->frame.hd.flags);
+
+ if (pri_fieldlen > 0) {
+ if (iframe->payloadleft < pri_fieldlen) {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR;
+ break;
+ }
+ iframe->state = NGHTTP2_IB_READ_NBYTE;
+ inbound_frame_set_mark(iframe, pri_fieldlen);
+ break;
+ } else {
+ /* Truncate buffers used for padding spec */
+ inbound_frame_set_mark(iframe, 0);
+ }
+ }
+
+ rv = session_process_headers_frame(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ busy = 1;
+
+ if (rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) {
+ rv = nghttp2_session_add_rst_stream(
+ session, iframe->frame.hd.stream_id, NGHTTP2_INTERNAL_ERROR);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK;
+ break;
+ }
+
+ if (rv == NGHTTP2_ERR_IGN_HEADER_BLOCK) {
+ iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK;
+ break;
+ }
+
+ iframe->state = NGHTTP2_IB_READ_HEADER_BLOCK;
+
+ break;
+ case NGHTTP2_PRIORITY:
+ rv = session_process_priority_frame(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ session_inbound_frame_reset(session);
+
+ break;
+ case NGHTTP2_RST_STREAM:
+ rv = session_process_rst_stream_frame(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ session_inbound_frame_reset(session);
+
+ break;
+ case NGHTTP2_PUSH_PROMISE:
+ if (iframe->padlen == 0 &&
+ (iframe->frame.hd.flags & NGHTTP2_FLAG_PADDED)) {
+ padlen = inbound_frame_compute_pad(iframe);
+ if (padlen < 0) {
+ busy = 1;
+ rv = nghttp2_session_terminate_session_with_reason(
+ session, NGHTTP2_PROTOCOL_ERROR,
+ "PUSH_PROMISE: invalid padding");
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ iframe->state = NGHTTP2_IB_IGN_PAYLOAD;
+ break;
+ }
+
+ iframe->frame.push_promise.padlen = (size_t)padlen;
+
+ if (iframe->payloadleft < 4) {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR;
+ break;
+ }
+
+ iframe->state = NGHTTP2_IB_READ_NBYTE;
+
+ inbound_frame_set_mark(iframe, 4);
+
+ break;
+ }
+
+ rv = session_process_push_promise_frame(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ busy = 1;
+
+ if (rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) {
+ rv = nghttp2_session_add_rst_stream(
+ session, iframe->frame.push_promise.promised_stream_id,
+ NGHTTP2_INTERNAL_ERROR);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK;
+ break;
+ }
+
+ if (rv == NGHTTP2_ERR_IGN_HEADER_BLOCK) {
+ iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK;
+ break;
+ }
+
+ iframe->state = NGHTTP2_IB_READ_HEADER_BLOCK;
+
+ break;
+ case NGHTTP2_PING:
+ rv = session_process_ping_frame(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ session_inbound_frame_reset(session);
+
+ break;
+ case NGHTTP2_GOAWAY: {
+ size_t debuglen;
+
+ /* 8 is Last-stream-ID + Error Code */
+ debuglen = iframe->frame.hd.length - 8;
+
+ if (debuglen > 0) {
+ iframe->raw_lbuf = nghttp2_mem_malloc(mem, debuglen);
+
+ if (iframe->raw_lbuf == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ nghttp2_buf_wrap_init(&iframe->lbuf, iframe->raw_lbuf, debuglen);
+ }
+
+ busy = 1;
+
+ iframe->state = NGHTTP2_IB_READ_GOAWAY_DEBUG;
+
+ break;
+ }
+ case NGHTTP2_WINDOW_UPDATE:
+ rv = session_process_window_update_frame(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ session_inbound_frame_reset(session);
+
+ break;
+ case NGHTTP2_ALTSVC: {
+ size_t origin_len;
+
+ origin_len = nghttp2_get_uint16(iframe->sbuf.pos);
+
+ DEBUGF(fprintf(stderr, "recv: origin_len=%zu\n", origin_len));
+
+ if (2 + origin_len > iframe->payloadleft) {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR;
+ break;
+ }
+
+ if (iframe->frame.hd.length > 2) {
+ iframe->raw_lbuf =
+ nghttp2_mem_malloc(mem, iframe->frame.hd.length - 2);
+
+ if (iframe->raw_lbuf == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ nghttp2_buf_wrap_init(&iframe->lbuf, iframe->raw_lbuf,
+ iframe->frame.hd.length);
+ }
+
+ busy = 1;
+
+ iframe->state = NGHTTP2_IB_READ_ALTSVC_PAYLOAD;
+
+ break;
+ }
+ default:
+ /* This is unknown frame */
+ session_inbound_frame_reset(session);
+
+ break;
+ }
+ break;
+ case NGHTTP2_IB_READ_HEADER_BLOCK:
+ case NGHTTP2_IB_IGN_HEADER_BLOCK: {
+ ssize_t data_readlen;
+ size_t trail_padlen;
+ int final;
+#ifdef DEBUGBUILD
+ if (iframe->state == NGHTTP2_IB_READ_HEADER_BLOCK) {
+ fprintf(stderr, "recv: [IB_READ_HEADER_BLOCK]\n");
+ } else {
+ fprintf(stderr, "recv: [IB_IGN_HEADER_BLOCK]\n");
+ }
+#endif /* DEBUGBUILD */
+
+ readlen = inbound_frame_payload_readlen(iframe, in, last);
+
+ DEBUGF(fprintf(stderr, "recv: readlen=%zu, payloadleft=%zu\n", readlen,
+ iframe->payloadleft - readlen));
+
+ data_readlen = inbound_frame_effective_readlen(
+ iframe, iframe->payloadleft - readlen, readlen);
+ trail_padlen = nghttp2_frame_trail_padlen(&iframe->frame, iframe->padlen);
+
+ final = (iframe->frame.hd.flags & NGHTTP2_FLAG_END_HEADERS) &&
+ iframe->payloadleft - (size_t)data_readlen == trail_padlen;
+
+ if (data_readlen > 0 || (data_readlen == 0 && final)) {
+ size_t hd_proclen = 0;
+
+ DEBUGF(fprintf(stderr, "recv: block final=%d\n", final));
+
+ rv =
+ inflate_header_block(session, &iframe->frame, &hd_proclen,
+ (uint8_t *)in, (size_t)data_readlen, final,
+ iframe->state == NGHTTP2_IB_READ_HEADER_BLOCK);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ if (rv == NGHTTP2_ERR_PAUSE) {
+ in += hd_proclen;
+ iframe->payloadleft -= hd_proclen;
+
+ return in - first;
+ }
+
+ if (rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) {
+ /* The application says no more headers. We decompress the
+ rest of the header block but not invoke on_header_callback
+ and on_frame_recv_callback. */
+ in += hd_proclen;
+ iframe->payloadleft -= hd_proclen;
+
+ /* Use promised stream ID for PUSH_PROMISE */
+ rv = nghttp2_session_add_rst_stream(
+ session, iframe->frame.hd.type == NGHTTP2_PUSH_PROMISE
+ ? iframe->frame.push_promise.promised_stream_id
+ : iframe->frame.hd.stream_id,
+ NGHTTP2_INTERNAL_ERROR);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ busy = 1;
+ iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK;
+ break;
+ }
+
+ in += readlen;
+ iframe->payloadleft -= readlen;
+
+ if (rv == NGHTTP2_ERR_HEADER_COMP) {
+ /* GOAWAY is already issued */
+ if (iframe->payloadleft == 0) {
+ session_inbound_frame_reset(session);
+ } else {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_IGN_PAYLOAD;
+ }
+ break;
+ }
+ } else {
+ in += readlen;
+ iframe->payloadleft -= readlen;
+ }
+
+ if (iframe->payloadleft) {
+ break;
+ }
+
+ if ((iframe->frame.hd.flags & NGHTTP2_FLAG_END_HEADERS) == 0) {
+
+ inbound_frame_set_mark(iframe, NGHTTP2_FRAME_HDLEN);
+
+ iframe->padlen = 0;
+
+ if (iframe->state == NGHTTP2_IB_READ_HEADER_BLOCK) {
+ iframe->state = NGHTTP2_IB_EXPECT_CONTINUATION;
+ } else {
+ iframe->state = NGHTTP2_IB_IGN_CONTINUATION;
+ }
+ } else {
+ if (iframe->state == NGHTTP2_IB_READ_HEADER_BLOCK) {
+ rv = session_after_header_block_received(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+ session_inbound_frame_reset(session);
+ }
+ break;
+ }
+ case NGHTTP2_IB_IGN_PAYLOAD:
+ DEBUGF(fprintf(stderr, "recv: [IB_IGN_PAYLOAD]\n"));
+
+ readlen = inbound_frame_payload_readlen(iframe, in, last);
+ iframe->payloadleft -= readlen;
+ in += readlen;
+
+ DEBUGF(fprintf(stderr, "recv: readlen=%zu, payloadleft=%zu\n", readlen,
+ iframe->payloadleft));
+
+ if (iframe->payloadleft) {
+ break;
+ }
+
+ switch (iframe->frame.hd.type) {
+ case NGHTTP2_HEADERS:
+ case NGHTTP2_PUSH_PROMISE:
+ case NGHTTP2_CONTINUATION:
+ /* Mark inflater bad so that we won't perform further decoding */
+ session->hd_inflater.ctx.bad = 1;
+ break;
+ default:
+ break;
+ }
+
+ session_inbound_frame_reset(session);
+
+ break;
+ case NGHTTP2_IB_FRAME_SIZE_ERROR:
+ DEBUGF(fprintf(stderr, "recv: [IB_FRAME_SIZE_ERROR]\n"));
+
+ rv = session_handle_frame_size_error(session, &iframe->frame);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ busy = 1;
+
+ iframe->state = NGHTTP2_IB_IGN_PAYLOAD;
+
+ break;
+ case NGHTTP2_IB_READ_SETTINGS:
+ DEBUGF(fprintf(stderr, "recv: [IB_READ_SETTINGS]\n"));
+
+ readlen = inbound_frame_buf_read(iframe, in, last);
+ iframe->payloadleft -= readlen;
+ in += readlen;
+
+ DEBUGF(fprintf(stderr, "recv: readlen=%zu, payloadleft=%zu\n", readlen,
+ iframe->payloadleft));
+
+ if (nghttp2_buf_mark_avail(&iframe->sbuf)) {
+ break;
+ }
+
+ if (readlen > 0) {
+ inbound_frame_set_settings_entry(iframe);
+ }
+ if (iframe->payloadleft) {
+ inbound_frame_set_mark(iframe, NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH);
+ break;
+ }
+
+ rv = session_process_settings_frame(session);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ session_inbound_frame_reset(session);
+
+ break;
+ case NGHTTP2_IB_READ_GOAWAY_DEBUG:
+ DEBUGF(fprintf(stderr, "recv: [IB_READ_GOAWAY_DEBUG]\n"));
+
+ readlen = inbound_frame_payload_readlen(iframe, in, last);
+
+ if (readlen > 0) {
+ iframe->lbuf.last = nghttp2_cpymem(iframe->lbuf.last, in, readlen);
+
+ iframe->payloadleft -= readlen;
+ in += readlen;
+ }
+
+ DEBUGF(fprintf(stderr, "recv: readlen=%zu, payloadleft=%zu\n", readlen,
+ iframe->payloadleft));
+
+ if (iframe->payloadleft) {
+ assert(nghttp2_buf_avail(&iframe->lbuf) > 0);
+
+ break;
+ }
+
+ rv = session_process_goaway_frame(session);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ session_inbound_frame_reset(session);
+
+ break;
+ case NGHTTP2_IB_EXPECT_CONTINUATION:
+ case NGHTTP2_IB_IGN_CONTINUATION:
+#ifdef DEBUGBUILD
+ if (iframe->state == NGHTTP2_IB_EXPECT_CONTINUATION) {
+ fprintf(stderr, "recv: [IB_EXPECT_CONTINUATION]\n");
+ } else {
+ fprintf(stderr, "recv: [IB_IGN_CONTINUATION]\n");
+ }
+#endif /* DEBUGBUILD */
+
+ readlen = inbound_frame_buf_read(iframe, in, last);
+ in += readlen;
+
+ if (nghttp2_buf_mark_avail(&iframe->sbuf)) {
+ return in - first;
+ }
+
+ nghttp2_frame_unpack_frame_hd(&cont_hd, iframe->sbuf.pos);
+ iframe->payloadleft = cont_hd.length;
+
+ DEBUGF(fprintf(stderr, "recv: payloadlen=%zu, type=%u, flags=0x%02x, "
+ "stream_id=%d\n",
+ cont_hd.length, cont_hd.type, cont_hd.flags,
+ cont_hd.stream_id));
+
+ if (cont_hd.type != NGHTTP2_CONTINUATION ||
+ cont_hd.stream_id != iframe->frame.hd.stream_id) {
+ DEBUGF(fprintf(stderr, "recv: expected stream_id=%d, type=%d, but "
+ "got stream_id=%d, type=%u\n",
+ iframe->frame.hd.stream_id, NGHTTP2_CONTINUATION,
+ cont_hd.stream_id, cont_hd.type));
+ rv = nghttp2_session_terminate_session_with_reason(
+ session, NGHTTP2_PROTOCOL_ERROR,
+ "unexpected non-CONTINUATION frame or stream_id is invalid");
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ busy = 1;
+
+ iframe->state = NGHTTP2_IB_IGN_PAYLOAD;
+
+ break;
+ }
+
+ /* CONTINUATION won't bear NGHTTP2_PADDED flag */
+
+ iframe->frame.hd.flags = (uint8_t)(
+ iframe->frame.hd.flags | (cont_hd.flags & NGHTTP2_FLAG_END_HEADERS));
+ iframe->frame.hd.length += cont_hd.length;
+
+ busy = 1;
+
+ if (iframe->state == NGHTTP2_IB_EXPECT_CONTINUATION) {
+ iframe->state = NGHTTP2_IB_READ_HEADER_BLOCK;
+
+ rv = session_call_on_begin_frame(session, &cont_hd);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ } else {
+ iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK;
+ }
+
+ break;
+ case NGHTTP2_IB_READ_PAD_DATA:
+ DEBUGF(fprintf(stderr, "recv: [IB_READ_PAD_DATA]\n"));
+
+ readlen = inbound_frame_buf_read(iframe, in, last);
+ in += readlen;
+ iframe->payloadleft -= readlen;
+
+ DEBUGF(fprintf(stderr, "recv: readlen=%zu, payloadleft=%zu, left=%zu\n",
+ readlen, iframe->payloadleft,
+ nghttp2_buf_mark_avail(&iframe->sbuf)));
+
+ if (nghttp2_buf_mark_avail(&iframe->sbuf)) {
+ return in - first;
+ }
+
+ /* Pad Length field is subject to flow control */
+ rv = session_update_recv_connection_window_size(session, readlen);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ /* Pad Length field is consumed immediately */
+ rv =
+ nghttp2_session_consume(session, iframe->frame.hd.stream_id, readlen);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ stream = nghttp2_session_get_stream(session, iframe->frame.hd.stream_id);
+ if (stream) {
+ rv = session_update_recv_stream_window_size(
+ session, stream, readlen,
+ iframe->payloadleft ||
+ (iframe->frame.hd.flags & NGHTTP2_FLAG_END_STREAM) == 0);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+
+ busy = 1;
+
+ padlen = inbound_frame_compute_pad(iframe);
+ if (padlen < 0) {
+ rv = nghttp2_session_terminate_session_with_reason(
+ session, NGHTTP2_PROTOCOL_ERROR, "DATA: invalid padding");
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ iframe->state = NGHTTP2_IB_IGN_DATA;
+ break;
+ }
+
+ iframe->frame.data.padlen = (size_t)padlen;
+
+ iframe->state = NGHTTP2_IB_READ_DATA;
+
+ break;
+ case NGHTTP2_IB_READ_DATA:
+ stream = nghttp2_session_get_stream(session, iframe->frame.hd.stream_id);
+
+ if (!stream) {
+ busy = 1;
+ iframe->state = NGHTTP2_IB_IGN_DATA;
+ break;
+ }
+
+ DEBUGF(fprintf(stderr, "recv: [IB_READ_DATA]\n"));
+
+ readlen = inbound_frame_payload_readlen(iframe, in, last);
+ iframe->payloadleft -= readlen;
+ in += readlen;
+
+ DEBUGF(fprintf(stderr, "recv: readlen=%zu, payloadleft=%zu\n", readlen,
+ iframe->payloadleft));
+
+ if (readlen > 0) {
+ ssize_t data_readlen;
+
+ rv = session_update_recv_connection_window_size(session, readlen);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ rv = session_update_recv_stream_window_size(
+ session, stream, readlen,
+ iframe->payloadleft ||
+ (iframe->frame.hd.flags & NGHTTP2_FLAG_END_STREAM) == 0);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ data_readlen = inbound_frame_effective_readlen(
+ iframe, iframe->payloadleft, readlen);
+
+ if (data_readlen == -1) {
+ /* everything is padding */
+ data_readlen = 0;
+ }
+
+ padlen = (ssize_t)readlen - data_readlen;
+
+ if (padlen > 0) {
+ /* Padding is considered as "consumed" immediately */
+ rv = nghttp2_session_consume(session, iframe->frame.hd.stream_id,
+ (size_t)padlen);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+
+ DEBUGF(fprintf(stderr, "recv: data_readlen=%zd\n", data_readlen));
+
+ if (data_readlen > 0) {
+ if (session_enforce_http_messaging(session)) {
+ if (nghttp2_http_on_data_chunk(stream, (size_t)data_readlen) != 0) {
+ if (session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE) {
+ /* Consume all data for connection immediately here */
+ rv = session_update_connection_consumed_size(
+ session, (size_t)data_readlen);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+
+ rv = nghttp2_session_add_rst_stream(
+ session, iframe->frame.hd.stream_id, NGHTTP2_PROTOCOL_ERROR);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ busy = 1;
+ iframe->state = NGHTTP2_IB_IGN_DATA;
+ break;
+ }
+ }
+ if (session->callbacks.on_data_chunk_recv_callback) {
+ rv = session->callbacks.on_data_chunk_recv_callback(
+ session, iframe->frame.hd.flags, iframe->frame.hd.stream_id,
+ in - readlen, (size_t)data_readlen, session->user_data);
+ if (rv == NGHTTP2_ERR_PAUSE) {
+ return in - first;
+ }
+
+ if (nghttp2_is_fatal(rv)) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ }
+ }
+ }
+
+ if (iframe->payloadleft) {
+ break;
+ }
+
+ rv = session_process_data_frame(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ session_inbound_frame_reset(session);
+
+ break;
+ case NGHTTP2_IB_IGN_DATA:
+ DEBUGF(fprintf(stderr, "recv: [IB_IGN_DATA]\n"));
+
+ readlen = inbound_frame_payload_readlen(iframe, in, last);
+ iframe->payloadleft -= readlen;
+ in += readlen;
+
+ DEBUGF(fprintf(stderr, "recv: readlen=%zu, payloadleft=%zu\n", readlen,
+ iframe->payloadleft));
+
+ if (readlen > 0) {
+ /* Update connection-level flow control window for ignored
+ DATA frame too */
+ rv = session_update_recv_connection_window_size(session, readlen);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ if (session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE) {
+
+ /* Ignored DATA is considered as "consumed" immediately. */
+ rv = session_update_connection_consumed_size(session, readlen);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+ }
+ }
+
+ if (iframe->payloadleft) {
+ break;
+ }
+
+ session_inbound_frame_reset(session);
+
+ break;
+ case NGHTTP2_IB_IGN_ALL:
+ return (ssize_t)inlen;
+ case NGHTTP2_IB_READ_EXTENSION_PAYLOAD:
+ DEBUGF(fprintf(stderr, "recv: [IB_READ_EXTENSION_PAYLOAD]\n"));
+
+ readlen = inbound_frame_payload_readlen(iframe, in, last);
+ iframe->payloadleft -= readlen;
+ in += readlen;
+
+ DEBUGF(fprintf(stderr, "recv: readlen=%zu, payloadleft=%zu\n", readlen,
+ iframe->payloadleft));
+
+ if (readlen > 0) {
+ rv = session_call_on_extension_chunk_recv_callback(
+ session, in - readlen, readlen);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ if (rv != 0) {
+ busy = 1;
+
+ iframe->state = NGHTTP2_IB_IGN_PAYLOAD;
+
+ break;
+ }
+ }
+
+ if (iframe->payloadleft > 0) {
+ break;
+ }
+
+ rv = session_process_extension_frame(session);
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ session_inbound_frame_reset(session);
+
+ break;
+ case NGHTTP2_IB_READ_ALTSVC_PAYLOAD:
+ DEBUGF(fprintf(stderr, "recv: [IB_READ_ALTSVC_PAYLOAD]\n"));
+
+ readlen = inbound_frame_payload_readlen(iframe, in, last);
+
+ if (readlen > 0) {
+ iframe->lbuf.last = nghttp2_cpymem(iframe->lbuf.last, in, readlen);
+
+ iframe->payloadleft -= readlen;
+ in += readlen;
+ }
+
+ DEBUGF(fprintf(stderr, "recv: readlen=%zu, payloadleft=%zu\n", readlen,
+ iframe->payloadleft));
+
+ if (iframe->payloadleft) {
+ assert(nghttp2_buf_avail(&iframe->lbuf) > 0);
+
+ break;
+ }
+
+ rv = session_process_altsvc_frame(session);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ session_inbound_frame_reset(session);
+
+ break;
+ }
+
+ if (!busy && in == last) {
+ break;
+ }
+
+ busy = 0;
+ }
+
+ assert(in == last);
+
+ return in - first;
+}
+
+int nghttp2_session_recv(nghttp2_session *session) {
+ uint8_t buf[NGHTTP2_INBOUND_BUFFER_LENGTH];
+ while (1) {
+ ssize_t readlen;
+ readlen = session_recv(session, buf, sizeof(buf));
+ if (readlen > 0) {
+ ssize_t proclen = nghttp2_session_mem_recv(session, buf, (size_t)readlen);
+ if (proclen < 0) {
+ return (int)proclen;
+ }
+ assert(proclen == readlen);
+ } else if (readlen == 0 || readlen == NGHTTP2_ERR_WOULDBLOCK) {
+ return 0;
+ } else if (readlen == NGHTTP2_ERR_EOF) {
+ return NGHTTP2_ERR_EOF;
+ } else if (readlen < 0) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ }
+}
+
+/*
+ * Returns the number of active streams, which includes streams in
+ * reserved state.
+ */
+static size_t session_get_num_active_streams(nghttp2_session *session) {
+ return nghttp2_map_size(&session->streams) - session->num_closed_streams -
+ session->num_idle_streams;
+}
+
+int nghttp2_session_want_read(nghttp2_session *session) {
+ size_t num_active_streams;
+
+ /* If this flag is set, we don't want to read. The application
+ should drop the connection. */
+ if (session->goaway_flags & NGHTTP2_GOAWAY_TERM_SENT) {
+ return 0;
+ }
+
+ num_active_streams = session_get_num_active_streams(session);
+
+ /* Unless termination GOAWAY is sent or received, we always want to
+ read incoming frames. */
+
+ if (num_active_streams > 0) {
+ return 1;
+ }
+
+ /* If there is no active streams and GOAWAY has been sent or
+ received, we are done with this session. */
+ return (session->goaway_flags &
+ (NGHTTP2_GOAWAY_SENT | NGHTTP2_GOAWAY_RECV)) == 0;
+}
+
+int nghttp2_session_want_write(nghttp2_session *session) {
+ /* If these flag is set, we don't want to write any data. The
+ application should drop the connection. */
+ if (session->goaway_flags & NGHTTP2_GOAWAY_TERM_SENT) {
+ return 0;
+ }
+
+ /*
+ * Unless termination GOAWAY is sent or received, we want to write
+ * frames if there is pending ones. If pending frame is request/push
+ * response HEADERS and concurrent stream limit is reached, we don't
+ * want to write them.
+ */
+
+ if (session->aob.item == NULL &&
+ nghttp2_outbound_queue_top(&session->ob_urgent) == NULL &&
+ nghttp2_outbound_queue_top(&session->ob_reg) == NULL &&
+ (nghttp2_pq_empty(&session->root.obq) ||
+ session->remote_window_size == 0) &&
+ (nghttp2_outbound_queue_top(&session->ob_syn) == NULL ||
+ session_is_outgoing_concurrent_streams_max(session))) {
+ return 0;
+ }
+
+ /* If there is no active streams and GOAWAY has been sent or
+ received, we are done with this session. */
+ return (session->goaway_flags &
+ (NGHTTP2_GOAWAY_SENT | NGHTTP2_GOAWAY_RECV)) == 0;
+}
+
+int nghttp2_session_add_ping(nghttp2_session *session, uint8_t flags,
+ const uint8_t *opaque_data) {
+ int rv;
+ nghttp2_outbound_item *item;
+ nghttp2_frame *frame;
+ nghttp2_mem *mem;
+
+ mem = &session->mem;
+
+ if ((flags & NGHTTP2_FLAG_ACK) &&
+ session->obq_flood_counter_ >= NGHTTP2_MAX_OBQ_FLOOD_ITEM) {
+ return NGHTTP2_ERR_FLOODED;
+ }
+
+ item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
+ if (item == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ nghttp2_outbound_item_init(item);
+
+ frame = &item->frame;
+
+ nghttp2_frame_ping_init(&frame->ping, flags, opaque_data);
+
+ rv = nghttp2_session_add_item(session, item);
+
+ if (rv != 0) {
+ nghttp2_frame_ping_free(&frame->ping);
+ nghttp2_mem_free(mem, item);
+ return rv;
+ }
+
+ if (flags & NGHTTP2_FLAG_ACK) {
+ ++session->obq_flood_counter_;
+ }
+
+ return 0;
+}
+
+int nghttp2_session_add_goaway(nghttp2_session *session, int32_t last_stream_id,
+ uint32_t error_code, const uint8_t *opaque_data,
+ size_t opaque_data_len, uint8_t aux_flags) {
+ int rv;
+ nghttp2_outbound_item *item;
+ nghttp2_frame *frame;
+ uint8_t *opaque_data_copy = NULL;
+ nghttp2_goaway_aux_data *aux_data;
+ nghttp2_mem *mem;
+
+ mem = &session->mem;
+
+ if (nghttp2_session_is_my_stream_id(session, last_stream_id)) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ if (opaque_data_len) {
+ if (opaque_data_len + 8 > NGHTTP2_MAX_PAYLOADLEN) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+ opaque_data_copy = nghttp2_mem_malloc(mem, opaque_data_len);
+ if (opaque_data_copy == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+ memcpy(opaque_data_copy, opaque_data, opaque_data_len);
+ }
+
+ item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
+ if (item == NULL) {
+ nghttp2_mem_free(mem, opaque_data_copy);
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ nghttp2_outbound_item_init(item);
+
+ frame = &item->frame;
+
+ /* last_stream_id must not be increased from the value previously
+ sent */
+ last_stream_id = nghttp2_min(last_stream_id, session->local_last_stream_id);
+
+ nghttp2_frame_goaway_init(&frame->goaway, last_stream_id, error_code,
+ opaque_data_copy, opaque_data_len);
+
+ aux_data = &item->aux_data.goaway;
+ aux_data->flags = aux_flags;
+
+ rv = nghttp2_session_add_item(session, item);
+ if (rv != 0) {
+ nghttp2_frame_goaway_free(&frame->goaway, mem);
+ nghttp2_mem_free(mem, item);
+ return rv;
+ }
+ return 0;
+}
+
+int nghttp2_session_add_window_update(nghttp2_session *session, uint8_t flags,
+ int32_t stream_id,
+ int32_t window_size_increment) {
+ int rv;
+ nghttp2_outbound_item *item;
+ nghttp2_frame *frame;
+ nghttp2_mem *mem;
+
+ mem = &session->mem;
+ item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
+ if (item == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ nghttp2_outbound_item_init(item);
+
+ frame = &item->frame;
+
+ nghttp2_frame_window_update_init(&frame->window_update, flags, stream_id,
+ window_size_increment);
+
+ rv = nghttp2_session_add_item(session, item);
+
+ if (rv != 0) {
+ nghttp2_frame_window_update_free(&frame->window_update);
+ nghttp2_mem_free(mem, item);
+ return rv;
+ }
+ return 0;
+}
+
+static void
+session_append_inflight_settings(nghttp2_session *session,
+ nghttp2_inflight_settings *settings) {
+ nghttp2_inflight_settings **i;
+
+ for (i = &session->inflight_settings_head; *i; i = &(*i)->next)
+ ;
+
+ *i = settings;
+}
+
+int nghttp2_session_add_settings(nghttp2_session *session, uint8_t flags,
+ const nghttp2_settings_entry *iv, size_t niv) {
+ nghttp2_outbound_item *item;
+ nghttp2_frame *frame;
+ nghttp2_settings_entry *iv_copy;
+ size_t i;
+ int rv;
+ nghttp2_mem *mem;
+ nghttp2_inflight_settings *inflight_settings = NULL;
+
+ mem = &session->mem;
+
+ if (flags & NGHTTP2_FLAG_ACK) {
+ if (niv != 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ if (session->obq_flood_counter_ >= NGHTTP2_MAX_OBQ_FLOOD_ITEM) {
+ return NGHTTP2_ERR_FLOODED;
+ }
+ }
+
+ if (!nghttp2_iv_check(iv, niv)) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
+ if (item == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ if (niv > 0) {
+ iv_copy = nghttp2_frame_iv_copy(iv, niv, mem);
+ if (iv_copy == NULL) {
+ nghttp2_mem_free(mem, item);
+ return NGHTTP2_ERR_NOMEM;
+ }
+ } else {
+ iv_copy = NULL;
+ }
+
+ if ((flags & NGHTTP2_FLAG_ACK) == 0) {
+ rv = inflight_settings_new(&inflight_settings, iv, niv, mem);
+ if (rv != 0) {
+ assert(nghttp2_is_fatal(rv));
+ nghttp2_mem_free(mem, iv_copy);
+ nghttp2_mem_free(mem, item);
+ return rv;
+ }
+ }
+
+ nghttp2_outbound_item_init(item);
+
+ frame = &item->frame;
+
+ nghttp2_frame_settings_init(&frame->settings, flags, iv_copy, niv);
+ rv = nghttp2_session_add_item(session, item);
+ if (rv != 0) {
+ /* The only expected error is fatal one */
+ assert(nghttp2_is_fatal(rv));
+
+ inflight_settings_del(inflight_settings, mem);
+
+ nghttp2_frame_settings_free(&frame->settings, mem);
+ nghttp2_mem_free(mem, item);
+
+ return rv;
+ }
+
+ if (flags & NGHTTP2_FLAG_ACK) {
+ ++session->obq_flood_counter_;
+ } else {
+ session_append_inflight_settings(session, inflight_settings);
+ }
+
+ /* Extract NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS and ENABLE_PUSH
+ here. We use it to refuse the incoming stream and PUSH_PROMISE
+ with RST_STREAM. */
+
+ for (i = niv; i > 0; --i) {
+ if (iv[i - 1].settings_id == NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS) {
+ session->pending_local_max_concurrent_stream = iv[i - 1].value;
+ break;
+ }
+ }
+
+ for (i = niv; i > 0; --i) {
+ if (iv[i - 1].settings_id == NGHTTP2_SETTINGS_ENABLE_PUSH) {
+ session->pending_enable_push = (uint8_t)iv[i - 1].value;
+ break;
+ }
+ }
+
+ return 0;
+}
+
+int nghttp2_session_pack_data(nghttp2_session *session, nghttp2_bufs *bufs,
+ size_t datamax, nghttp2_frame *frame,
+ nghttp2_data_aux_data *aux_data,
+ nghttp2_stream *stream) {
+ int rv;
+ uint32_t data_flags;
+ ssize_t payloadlen;
+ ssize_t padded_payloadlen;
+ nghttp2_buf *buf;
+ size_t max_payloadlen;
+
+ assert(bufs->head == bufs->cur);
+
+ buf = &bufs->cur->buf;
+
+ if (session->callbacks.read_length_callback) {
+
+ payloadlen = session->callbacks.read_length_callback(
+ session, frame->hd.type, stream->stream_id, session->remote_window_size,
+ stream->remote_window_size, session->remote_settings.max_frame_size,
+ session->user_data);
+
+ DEBUGF(fprintf(stderr, "send: read_length_callback=%zd\n", payloadlen));
+
+ payloadlen = nghttp2_session_enforce_flow_control_limits(session, stream,
+ payloadlen);
+
+ DEBUGF(fprintf(stderr,
+ "send: read_length_callback after flow control=%zd\n",
+ payloadlen));
+
+ if (payloadlen <= 0) {
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+
+ if ((size_t)payloadlen > nghttp2_buf_avail(buf)) {
+ /* Resize the current buffer(s). The reason why we do +1 for
+ buffer size is for possible padding field. */
+ rv = nghttp2_bufs_realloc(&session->aob.framebufs,
+ (size_t)(NGHTTP2_FRAME_HDLEN + 1 + payloadlen));
+
+ if (rv != 0) {
+ DEBUGF(fprintf(stderr, "send: realloc buffer failed rv=%d", rv));
+ /* If reallocation failed, old buffers are still in tact. So
+ use safe limit. */
+ payloadlen = (ssize_t)datamax;
+
+ DEBUGF(
+ fprintf(stderr, "send: use safe limit payloadlen=%zd", payloadlen));
+ } else {
+ assert(&session->aob.framebufs == bufs);
+
+ buf = &bufs->cur->buf;
+ }
+ }
+ datamax = (size_t)payloadlen;
+ }
+
+ /* Current max DATA length is less then buffer chunk size */
+ assert(nghttp2_buf_avail(buf) >= datamax);
+
+ data_flags = NGHTTP2_DATA_FLAG_NONE;
+ payloadlen = aux_data->data_prd.read_callback(
+ session, frame->hd.stream_id, buf->pos, datamax, &data_flags,
+ &aux_data->data_prd.source, session->user_data);
+
+ if (payloadlen == NGHTTP2_ERR_DEFERRED ||
+ payloadlen == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) {
+ DEBUGF(fprintf(stderr, "send: DATA postponed due to %s\n",
+ nghttp2_strerror((int)payloadlen)));
+
+ return (int)payloadlen;
+ }
+
+ if (payloadlen < 0 || datamax < (size_t)payloadlen) {
+ /* This is the error code when callback is failed. */
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+
+ buf->last = buf->pos + payloadlen;
+ buf->pos -= NGHTTP2_FRAME_HDLEN;
+
+ /* Clear flags, because this may contain previous flags of previous
+ DATA */
+ frame->hd.flags = NGHTTP2_FLAG_NONE;
+
+ if (data_flags & NGHTTP2_DATA_FLAG_EOF) {
+ aux_data->eof = 1;
+ /* If NGHTTP2_DATA_FLAG_NO_END_STREAM is set, don't set
+ NGHTTP2_FLAG_END_STREAM */
+ if ((aux_data->flags & NGHTTP2_FLAG_END_STREAM) &&
+ (data_flags & NGHTTP2_DATA_FLAG_NO_END_STREAM) == 0) {
+ frame->hd.flags |= NGHTTP2_FLAG_END_STREAM;
+ }
+ }
+
+ if (data_flags & NGHTTP2_DATA_FLAG_NO_COPY) {
+ if (session->callbacks.send_data_callback == NULL) {
+ DEBUGF(fprintf(
+ stderr,
+ "NGHTTP2_DATA_FLAG_NO_COPY requires send_data_callback set\n"));
+
+ return NGHTTP2_ERR_CALLBACK_FAILURE;
+ }
+ aux_data->no_copy = 1;
+ }
+
+ frame->hd.length = (size_t)payloadlen;
+ frame->data.padlen = 0;
+
+ max_payloadlen = nghttp2_min(datamax, frame->hd.length + NGHTTP2_MAX_PADLEN);
+
+ padded_payloadlen =
+ session_call_select_padding(session, frame, max_payloadlen);
+
+ if (nghttp2_is_fatal((int)padded_payloadlen)) {
+ return (int)padded_payloadlen;
+ }
+
+ frame->data.padlen = (size_t)(padded_payloadlen - payloadlen);
+
+ nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd);
+
+ rv = nghttp2_frame_add_pad(bufs, &frame->hd, frame->data.padlen,
+ aux_data->no_copy);
+ if (rv != 0) {
+ return rv;
+ }
+
+ reschedule_stream(stream);
+
+ if (frame->hd.length == 0 && (data_flags & NGHTTP2_DATA_FLAG_EOF) &&
+ (data_flags & NGHTTP2_DATA_FLAG_NO_END_STREAM)) {
+ /* DATA payload length is 0, and DATA frame does not bear
+ END_STREAM. In this case, there is no point to send 0 length
+ DATA frame. */
+ return NGHTTP2_ERR_CANCEL;
+ }
+
+ return 0;
+}
+
+void *nghttp2_session_get_stream_user_data(nghttp2_session *session,
+ int32_t stream_id) {
+ nghttp2_stream *stream;
+ stream = nghttp2_session_get_stream(session, stream_id);
+ if (stream) {
+ return stream->stream_user_data;
+ } else {
+ return NULL;
+ }
+}
+
+int nghttp2_session_set_stream_user_data(nghttp2_session *session,
+ int32_t stream_id,
+ void *stream_user_data) {
+ nghttp2_stream *stream;
+ stream = nghttp2_session_get_stream(session, stream_id);
+ if (!stream) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+ stream->stream_user_data = stream_user_data;
+ return 0;
+}
+
+int nghttp2_session_resume_data(nghttp2_session *session, int32_t stream_id) {
+ int rv;
+ nghttp2_stream *stream;
+ stream = nghttp2_session_get_stream(session, stream_id);
+ if (stream == NULL || !nghttp2_stream_check_deferred_item(stream)) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ rv = nghttp2_stream_resume_deferred_item(stream,
+ NGHTTP2_STREAM_FLAG_DEFERRED_USER);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ return rv;
+}
+
+size_t nghttp2_session_get_outbound_queue_size(nghttp2_session *session) {
+ return nghttp2_outbound_queue_size(&session->ob_urgent) +
+ nghttp2_outbound_queue_size(&session->ob_reg) +
+ nghttp2_outbound_queue_size(&session->ob_syn);
+ /* TODO account for item attached to stream */
+}
+
+int32_t
+nghttp2_session_get_stream_effective_recv_data_length(nghttp2_session *session,
+ int32_t stream_id) {
+ nghttp2_stream *stream;
+ stream = nghttp2_session_get_stream(session, stream_id);
+ if (stream == NULL) {
+ return -1;
+ }
+ return stream->recv_window_size < 0 ? 0 : stream->recv_window_size;
+}
+
+int32_t
+nghttp2_session_get_stream_effective_local_window_size(nghttp2_session *session,
+ int32_t stream_id) {
+ nghttp2_stream *stream;
+ stream = nghttp2_session_get_stream(session, stream_id);
+ if (stream == NULL) {
+ return -1;
+ }
+ return stream->local_window_size;
+}
+
+int32_t
+nghttp2_session_get_effective_recv_data_length(nghttp2_session *session) {
+ return session->recv_window_size < 0 ? 0 : session->recv_window_size;
+}
+
+int32_t
+nghttp2_session_get_effective_local_window_size(nghttp2_session *session) {
+ return session->local_window_size;
+}
+
+int32_t nghttp2_session_get_stream_remote_window_size(nghttp2_session *session,
+ int32_t stream_id) {
+ nghttp2_stream *stream;
+
+ stream = nghttp2_session_get_stream(session, stream_id);
+ if (stream == NULL) {
+ return -1;
+ }
+
+ /* stream->remote_window_size can be negative when
+ SETTINGS_INITIAL_WINDOW_SIZE is changed. */
+ return nghttp2_max(0, stream->remote_window_size);
+}
+
+int32_t nghttp2_session_get_remote_window_size(nghttp2_session *session) {
+ return session->remote_window_size;
+}
+
+uint32_t nghttp2_session_get_remote_settings(nghttp2_session *session,
+ nghttp2_settings_id id) {
+ switch (id) {
+ case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE:
+ return session->remote_settings.header_table_size;
+ case NGHTTP2_SETTINGS_ENABLE_PUSH:
+ return session->remote_settings.enable_push;
+ case NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS:
+ return session->remote_settings.max_concurrent_streams;
+ case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE:
+ return session->remote_settings.initial_window_size;
+ case NGHTTP2_SETTINGS_MAX_FRAME_SIZE:
+ return session->remote_settings.max_frame_size;
+ case NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE:
+ return session->remote_settings.max_header_list_size;
+ }
+
+ assert(0);
+}
+
+static int nghttp2_session_upgrade_internal(nghttp2_session *session,
+ const uint8_t *settings_payload,
+ size_t settings_payloadlen,
+ void *stream_user_data) {
+ nghttp2_stream *stream;
+ nghttp2_frame frame;
+ nghttp2_settings_entry *iv;
+ size_t niv;
+ int rv;
+ nghttp2_priority_spec pri_spec;
+ nghttp2_mem *mem;
+
+ mem = &session->mem;
+
+ if ((!session->server && session->next_stream_id != 1) ||
+ (session->server && session->last_recv_stream_id >= 1)) {
+ return NGHTTP2_ERR_PROTO;
+ }
+ if (settings_payloadlen % NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+ rv = nghttp2_frame_unpack_settings_payload2(&iv, &niv, settings_payload,
+ settings_payloadlen, mem);
+ if (rv != 0) {
+ return rv;
+ }
+
+ if (session->server) {
+ nghttp2_frame_hd_init(&frame.hd, settings_payloadlen, NGHTTP2_SETTINGS,
+ NGHTTP2_FLAG_NONE, 0);
+ frame.settings.iv = iv;
+ frame.settings.niv = niv;
+ rv = nghttp2_session_on_settings_received(session, &frame, 1 /* No ACK */);
+ } else {
+ rv = nghttp2_submit_settings(session, NGHTTP2_FLAG_NONE, iv, niv);
+ }
+ nghttp2_mem_free(mem, iv);
+ if (rv != 0) {
+ return rv;
+ }
+
+ nghttp2_priority_spec_default_init(&pri_spec);
+
+ stream = nghttp2_session_open_stream(
+ session, 1, NGHTTP2_STREAM_FLAG_NONE, &pri_spec, NGHTTP2_STREAM_OPENING,
+ session->server ? NULL : stream_user_data);
+ if (stream == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ /* We don't call nghttp2_session_adjust_closed_stream(), since this
+ should be the first stream open. */
+
+ if (session->server) {
+ nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_RD);
+ session->last_recv_stream_id = 1;
+ session->last_proc_stream_id = 1;
+ } else {
+ nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_WR);
+ session->last_sent_stream_id = 1;
+ session->next_stream_id += 2;
+ }
+ return 0;
+}
+
+int nghttp2_session_upgrade(nghttp2_session *session,
+ const uint8_t *settings_payload,
+ size_t settings_payloadlen,
+ void *stream_user_data) {
+ int rv;
+ nghttp2_stream *stream;
+
+ rv = nghttp2_session_upgrade_internal(session, settings_payload,
+ settings_payloadlen, stream_user_data);
+ if (rv != 0) {
+ return rv;
+ }
+
+ stream = nghttp2_session_get_stream(session, 1);
+ assert(stream);
+
+ /* We have no information about request header fields when Upgrade
+ was happened. So we don't know the request method here. If
+ request method is HEAD, we have a trouble because we may have
+ nonzero content-length header field in response headers, and we
+ will going to check it against the actual DATA frames, but we may
+ get mismatch because HEAD response body must be empty. Because
+ of this reason, nghttp2_session_upgrade() was deprecated in favor
+ of nghttp2_session_upgrade2(), which has |head_request| parameter
+ to indicate that request method is HEAD or not. */
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_METH_UPGRADE_WORKAROUND;
+ return 0;
+}
+
+int nghttp2_session_upgrade2(nghttp2_session *session,
+ const uint8_t *settings_payload,
+ size_t settings_payloadlen, int head_request,
+ void *stream_user_data) {
+ int rv;
+ nghttp2_stream *stream;
+
+ rv = nghttp2_session_upgrade_internal(session, settings_payload,
+ settings_payloadlen, stream_user_data);
+ if (rv != 0) {
+ return rv;
+ }
+
+ stream = nghttp2_session_get_stream(session, 1);
+ assert(stream);
+
+ if (head_request) {
+ stream->http_flags |= NGHTTP2_HTTP_FLAG_METH_HEAD;
+ }
+
+ return 0;
+}
+
+int nghttp2_session_get_stream_local_close(nghttp2_session *session,
+ int32_t stream_id) {
+ nghttp2_stream *stream;
+
+ stream = nghttp2_session_get_stream(session, stream_id);
+
+ if (!stream) {
+ return -1;
+ }
+
+ return (stream->shut_flags & NGHTTP2_SHUT_WR) != 0;
+}
+
+int nghttp2_session_get_stream_remote_close(nghttp2_session *session,
+ int32_t stream_id) {
+ nghttp2_stream *stream;
+
+ stream = nghttp2_session_get_stream(session, stream_id);
+
+ if (!stream) {
+ return -1;
+ }
+
+ return (stream->shut_flags & NGHTTP2_SHUT_RD) != 0;
+}
+
+int nghttp2_session_consume(nghttp2_session *session, int32_t stream_id,
+ size_t size) {
+ int rv;
+ nghttp2_stream *stream;
+
+ if (stream_id == 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ if (!(session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE)) {
+ return NGHTTP2_ERR_INVALID_STATE;
+ }
+
+ rv = session_update_connection_consumed_size(session, size);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ stream = nghttp2_session_get_stream(session, stream_id);
+
+ if (!stream) {
+ return 0;
+ }
+
+ rv = session_update_stream_consumed_size(session, stream, size);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ return 0;
+}
+
+int nghttp2_session_consume_connection(nghttp2_session *session, size_t size) {
+ int rv;
+
+ if (!(session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE)) {
+ return NGHTTP2_ERR_INVALID_STATE;
+ }
+
+ rv = session_update_connection_consumed_size(session, size);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ return 0;
+}
+
+int nghttp2_session_consume_stream(nghttp2_session *session, int32_t stream_id,
+ size_t size) {
+ int rv;
+ nghttp2_stream *stream;
+
+ if (stream_id == 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ if (!(session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE)) {
+ return NGHTTP2_ERR_INVALID_STATE;
+ }
+
+ stream = nghttp2_session_get_stream(session, stream_id);
+
+ if (!stream) {
+ return 0;
+ }
+
+ rv = session_update_stream_consumed_size(session, stream, size);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ return 0;
+}
+
+int nghttp2_session_set_next_stream_id(nghttp2_session *session,
+ int32_t next_stream_id) {
+ if (next_stream_id <= 0 ||
+ session->next_stream_id > (uint32_t)next_stream_id) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ if (session->server) {
+ if (next_stream_id % 2) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+ } else if (next_stream_id % 2 == 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ session->next_stream_id = (uint32_t)next_stream_id;
+ return 0;
+}
+
+uint32_t nghttp2_session_get_next_stream_id(nghttp2_session *session) {
+ return session->next_stream_id;
+}
+
+int32_t nghttp2_session_get_last_proc_stream_id(nghttp2_session *session) {
+ return session->last_proc_stream_id;
+}
+
+nghttp2_stream *nghttp2_session_find_stream(nghttp2_session *session,
+ int32_t stream_id) {
+ if (stream_id == 0) {
+ return &session->root;
+ }
+
+ return nghttp2_session_get_stream_raw(session, stream_id);
+}
+
+nghttp2_stream *nghttp2_session_get_root_stream(nghttp2_session *session) {
+ return &session->root;
+}
+
+int nghttp2_session_check_server_session(nghttp2_session *session) {
+ return session->server;
+}
+
+int nghttp2_session_change_stream_priority(
+ nghttp2_session *session, int32_t stream_id,
+ const nghttp2_priority_spec *pri_spec) {
+ int rv;
+ nghttp2_stream *stream;
+ nghttp2_priority_spec pri_spec_copy;
+
+ if (stream_id == 0 || stream_id == pri_spec->stream_id) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ stream = nghttp2_session_get_stream_raw(session, stream_id);
+ if (!stream) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ pri_spec_copy = *pri_spec;
+ nghttp2_priority_spec_normalize_weight(&pri_spec_copy);
+
+ rv = nghttp2_session_reprioritize_stream(session, stream, &pri_spec_copy);
+
+ if (nghttp2_is_fatal(rv)) {
+ return rv;
+ }
+
+ /* We don't intentionally call nghttp2_session_adjust_idle_stream()
+ so that idle stream created by this function, and existing ones
+ are kept for application. We will adjust number of idle stream
+ in nghttp2_session_mem_send or nghttp2_session_mem_recv is
+ called. */
+ return 0;
+}
+
+int nghttp2_session_create_idle_stream(nghttp2_session *session,
+ int32_t stream_id,
+ const nghttp2_priority_spec *pri_spec) {
+ nghttp2_stream *stream;
+ nghttp2_priority_spec pri_spec_copy;
+
+ if (stream_id == 0 || stream_id == pri_spec->stream_id ||
+ !session_detect_idle_stream(session, stream_id)) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ stream = nghttp2_session_get_stream_raw(session, stream_id);
+ if (stream) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ pri_spec_copy = *pri_spec;
+ nghttp2_priority_spec_normalize_weight(&pri_spec_copy);
+
+ stream =
+ nghttp2_session_open_stream(session, stream_id, NGHTTP2_STREAM_FLAG_NONE,
+ &pri_spec_copy, NGHTTP2_STREAM_IDLE, NULL);
+ if (!stream) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ /* We don't intentionally call nghttp2_session_adjust_idle_stream()
+ so that idle stream created by this function, and existing ones
+ are kept for application. We will adjust number of idle stream
+ in nghttp2_session_mem_send or nghttp2_session_mem_recv is
+ called. */
+ return 0;
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_stream.h"
+
+#include <assert.h>
+#include <stdio.h>
+
+#include "nghttp2_session.h"
+#include "nghttp2_helper.h"
+
+/* Maximum distance between any two stream's cycle in the same
+ prirority queue. Imagine stream A's cycle is A, and stream B's
+ cycle is B, and A < B. The cycle is unsigned 32 bit integer, it
+ may get overflow. Because of how we calculate the next cycle
+ value, if B - A is less than or equals to
+ NGHTTP2_MAX_CYCLE_DISTANCE, A and B are in the same scale, in other
+ words, B is really greater than or equal to A. Otherwise, A is a
+ result of overflow, and it is actually A > B if we consider that
+ fact. */
+#define NGHTTP2_MAX_CYCLE_DISTANCE (16384 * 256 + 255)
+
+static int stream_less(const void *lhsx, const void *rhsx) {
+ const nghttp2_stream *lhs, *rhs;
+
+ lhs = nghttp2_struct_of(lhsx, nghttp2_stream, pq_entry);
+ rhs = nghttp2_struct_of(rhsx, nghttp2_stream, pq_entry);
+
+ if (lhs->cycle == rhs->cycle) {
+ return lhs->seq < rhs->seq;
+ }
+
+ if (lhs->cycle < rhs->cycle) {
+ return rhs->cycle - lhs->cycle <= NGHTTP2_MAX_CYCLE_DISTANCE;
+ }
+
+ return lhs->cycle - rhs->cycle > NGHTTP2_MAX_CYCLE_DISTANCE;
+}
+
+void nghttp2_stream_init(nghttp2_stream *stream, int32_t stream_id,
+ uint8_t flags, nghttp2_stream_state initial_state,
+ int32_t weight, int32_t remote_initial_window_size,
+ int32_t local_initial_window_size,
+ void *stream_user_data, nghttp2_mem *mem) {
+ nghttp2_map_entry_init(&stream->map_entry, (key_type)stream_id);
+ nghttp2_pq_init(&stream->obq, stream_less, mem);
+
+ stream->stream_id = stream_id;
+ stream->flags = flags;
+ stream->state = initial_state;
+ stream->shut_flags = NGHTTP2_SHUT_NONE;
+ stream->stream_user_data = stream_user_data;
+ stream->item = NULL;
+ stream->remote_window_size = remote_initial_window_size;
+ stream->local_window_size = local_initial_window_size;
+ stream->recv_window_size = 0;
+ stream->consumed_size = 0;
+ stream->recv_reduction = 0;
+ stream->window_update_queued = 0;
+
+ stream->dep_prev = NULL;
+ stream->dep_next = NULL;
+ stream->sib_prev = NULL;
+ stream->sib_next = NULL;
+
+ stream->closed_prev = NULL;
+ stream->closed_next = NULL;
+
+ stream->weight = weight;
+ stream->sum_dep_weight = 0;
+
+ stream->http_flags = NGHTTP2_HTTP_FLAG_NONE;
+ stream->content_length = -1;
+ stream->recv_content_length = 0;
+ stream->status_code = -1;
+
+ stream->queued = 0;
+ stream->descendant_last_cycle = 0;
+ stream->cycle = 0;
+ stream->pending_penalty = 0;
+ stream->descendant_next_seq = 0;
+ stream->seq = 0;
+ stream->last_writelen = 0;
+}
+
+void nghttp2_stream_free(nghttp2_stream *stream) {
+ nghttp2_pq_free(&stream->obq);
+ /* We don't free stream->item. If it is assigned to aob, then
+ active_outbound_item_reset() will delete it. Otherwise,
+ nghttp2_stream_close() or session_del() will delete it. */
+}
+
+void nghttp2_stream_shutdown(nghttp2_stream *stream, nghttp2_shut_flag flag) {
+ stream->shut_flags = (uint8_t)(stream->shut_flags | flag);
+}
+
+/*
+ * Returns nonzero if |stream| is active. This function does not take
+ * into account its descendants.
+ */
+static int stream_active(nghttp2_stream *stream) {
+ return stream->item &&
+ (stream->flags & NGHTTP2_STREAM_FLAG_DEFERRED_ALL) == 0;
+}
+
+/*
+ * Returns nonzero if |stream| or one of its descendants is active
+ */
+static int stream_subtree_active(nghttp2_stream *stream) {
+ return stream_active(stream) || !nghttp2_pq_empty(&stream->obq);
+}
+
+/*
+ * Returns next cycle for |stream|.
+ */
+static void stream_next_cycle(nghttp2_stream *stream, uint32_t last_cycle) {
+ uint32_t penalty;
+
+ penalty = (uint32_t)stream->last_writelen * NGHTTP2_MAX_WEIGHT +
+ stream->pending_penalty;
+
+ stream->cycle = last_cycle + penalty / (uint32_t)stream->weight;
+ stream->pending_penalty = penalty % (uint32_t)stream->weight;
+}
+
+static int stream_obq_push(nghttp2_stream *dep_stream, nghttp2_stream *stream) {
+ int rv;
+
+ for (; dep_stream && !stream->queued;
+ stream = dep_stream, dep_stream = dep_stream->dep_prev) {
+ stream_next_cycle(stream, dep_stream->descendant_last_cycle);
+ stream->seq = dep_stream->descendant_next_seq++;
+
+ DEBUGF(fprintf(stderr, "stream: stream=%d obq push cycle=%d\n",
+ stream->stream_id, stream->cycle));
+
+ DEBUGF(fprintf(stderr, "stream: push stream %d to stream %d\n",
+ stream->stream_id, dep_stream->stream_id));
+
+ rv = nghttp2_pq_push(&dep_stream->obq, &stream->pq_entry);
+ if (rv != 0) {
+ return rv;
+ }
+ stream->queued = 1;
+ }
+
+ return 0;
+}
+
+/*
+ * Removes |stream| from parent's obq. If removal of |stream| makes
+ * parent's obq empty, and parent is not active, then parent is also
+ * removed. This process is repeated recursively.
+ */
+static void stream_obq_remove(nghttp2_stream *stream) {
+ nghttp2_stream *dep_stream;
+
+ dep_stream = stream->dep_prev;
+
+ if (!stream->queued) {
+ return;
+ }
+
+ for (; dep_stream; stream = dep_stream, dep_stream = dep_stream->dep_prev) {
+ DEBUGF(fprintf(stderr, "stream: remove stream %d from stream %d\n",
+ stream->stream_id, dep_stream->stream_id));
+
+ nghttp2_pq_remove(&dep_stream->obq, &stream->pq_entry);
+
+ assert(stream->queued);
+
+ stream->queued = 0;
+ stream->cycle = 0;
+ stream->pending_penalty = 0;
+ stream->descendant_last_cycle = 0;
+ stream->last_writelen = 0;
+
+ if (stream_subtree_active(dep_stream)) {
+ return;
+ }
+ }
+}
+
+/*
+ * Moves |stream| from |src|'s obq to |dest|'s obq. Removal from
+ * |src|'s obq is just done calling nghttp2_pq_remove(), so it does
+ * not recursively remove |src| and ancestors, like
+ * stream_obq_remove().
+ */
+static int stream_obq_move(nghttp2_stream *dest, nghttp2_stream *src,
+ nghttp2_stream *stream) {
+ if (!stream->queued) {
+ return 0;
+ }
+
+ DEBUGF(fprintf(stderr, "stream: remove stream %d from stream %d (move)\n",
+ stream->stream_id, src->stream_id));
+
+ nghttp2_pq_remove(&src->obq, &stream->pq_entry);
+ stream->queued = 0;
+
+ return stream_obq_push(dest, stream);
+}
+
+void nghttp2_stream_reschedule(nghttp2_stream *stream) {
+ nghttp2_stream *dep_stream;
+
+ assert(stream->queued);
+
+ dep_stream = stream->dep_prev;
+
+ for (; dep_stream; stream = dep_stream, dep_stream = dep_stream->dep_prev) {
+ nghttp2_pq_remove(&dep_stream->obq, &stream->pq_entry);
+
+ stream_next_cycle(stream, dep_stream->descendant_last_cycle);
+ stream->seq = dep_stream->descendant_next_seq++;
+
+ nghttp2_pq_push(&dep_stream->obq, &stream->pq_entry);
+
+ DEBUGF(fprintf(stderr, "stream: stream=%d obq resched cycle=%d\n",
+ stream->stream_id, stream->cycle));
+
+ dep_stream->last_writelen = stream->last_writelen;
+ }
+}
+
+void nghttp2_stream_change_weight(nghttp2_stream *stream, int32_t weight) {
+ nghttp2_stream *dep_stream;
+ uint32_t last_cycle;
+ int32_t old_weight;
+ uint32_t wlen_penalty;
+
+ if (stream->weight == weight) {
+ return;
+ }
+
+ old_weight = stream->weight;
+ stream->weight = weight;
+
+ dep_stream = stream->dep_prev;
+
+ if (!dep_stream) {
+ return;
+ }
+
+ dep_stream->sum_dep_weight += weight - old_weight;
+
+ if (!stream->queued) {
+ return;
+ }
+
+ nghttp2_pq_remove(&dep_stream->obq, &stream->pq_entry);
+
+ wlen_penalty = (uint32_t)stream->last_writelen * NGHTTP2_MAX_WEIGHT;
+
+ /* Compute old stream->pending_penalty we used to calculate
+ stream->cycle */
+ stream->pending_penalty =
+ (uint32_t)((stream->pending_penalty + (uint32_t)old_weight -
+ (wlen_penalty % (uint32_t)old_weight)) %
+ (uint32_t)old_weight);
+
+ last_cycle = stream->cycle -
+ (wlen_penalty + stream->pending_penalty) / (uint32_t)old_weight;
+
+ /* Now we have old stream->pending_penalty and new stream->weight in
+ place */
+ stream_next_cycle(stream, last_cycle);
+
+ if (stream->cycle < dep_stream->descendant_last_cycle &&
+ (dep_stream->descendant_last_cycle - stream->cycle) <=
+ NGHTTP2_MAX_CYCLE_DISTANCE) {
+ stream->cycle = dep_stream->descendant_last_cycle;
+ }
+
+ /* Continue to use same stream->seq */
+
+ nghttp2_pq_push(&dep_stream->obq, &stream->pq_entry);
+
+ DEBUGF(fprintf(stderr, "stream: stream=%d obq resched cycle=%d\n",
+ stream->stream_id, stream->cycle));
+}
+
+static nghttp2_stream *stream_last_sib(nghttp2_stream *stream) {
+ for (; stream->sib_next; stream = stream->sib_next)
+ ;
+
+ return stream;
+}
+
+int32_t nghttp2_stream_dep_distributed_weight(nghttp2_stream *stream,
+ int32_t weight) {
+ weight = stream->weight * weight / stream->sum_dep_weight;
+
+ return nghttp2_max(1, weight);
+}
+
+#ifdef STREAM_DEP_DEBUG
+
+static void ensure_inactive(nghttp2_stream *stream) {
+ nghttp2_stream *si;
+
+ if (stream->queued) {
+ fprintf(stderr, "stream(%p)=%d, stream->queued = 1; want 0\n", stream,
+ stream->stream_id);
+ assert(0);
+ }
+
+ if (stream_active(stream)) {
+ fprintf(stderr, "stream(%p)=%d, stream_active(stream) = 1; want 0\n",
+ stream, stream->stream_id);
+ assert(0);
+ }
+
+ if (!nghttp2_pq_empty(&stream->obq)) {
+ fprintf(stderr, "stream(%p)=%d, nghttp2_pq_size() = %zu; want 0\n", stream,
+ stream->stream_id, nghttp2_pq_size(&stream->obq));
+ assert(0);
+ }
+
+ for (si = stream->dep_next; si; si = si->sib_next) {
+ ensure_inactive(si);
+ }
+}
+
+static void check_queued(nghttp2_stream *stream) {
+ nghttp2_stream *si;
+ int queued;
+
+ if (stream->queued) {
+ if (!stream_subtree_active(stream)) {
+ fprintf(stderr,
+ "stream(%p)=%d, stream->queued == 1, but "
+ "stream_active() == %d and nghttp2_pq_size(&stream->obq) = %zu\n",
+ stream, stream->stream_id, stream_active(stream),
+ nghttp2_pq_size(&stream->obq));
+ assert(0);
+ }
+ if (!stream_active(stream)) {
+ queued = 0;
+ for (si = stream->dep_next; si; si = si->sib_next) {
+ if (si->queued) {
+ ++queued;
+ }
+ }
+ if (queued == 0) {
+ fprintf(stderr, "stream(%p)=%d, stream->queued == 1, and "
+ "!stream_active(), but no descendants is queued\n",
+ stream, stream->stream_id);
+ assert(0);
+ }
+ }
+
+ for (si = stream->dep_next; si; si = si->sib_next) {
+ check_queued(si);
+ }
+ } else {
+ if (stream_active(stream) || !nghttp2_pq_empty(&stream->obq)) {
+ fprintf(stderr, "stream(%p) = %d, stream->queued == 0, but "
+ "stream_active(stream) == %d and "
+ "nghttp2_pq_size(&stream->obq) = %zu\n",
+ stream, stream->stream_id, stream_active(stream),
+ nghttp2_pq_size(&stream->obq));
+ assert(0);
+ }
+ for (si = stream->dep_next; si; si = si->sib_next) {
+ ensure_inactive(si);
+ }
+ }
+}
+
+static void check_sum_dep(nghttp2_stream *stream) {
+ nghttp2_stream *si;
+ int32_t n = 0;
+ for (si = stream->dep_next; si; si = si->sib_next) {
+ n += si->weight;
+ }
+ if (n != stream->sum_dep_weight) {
+ fprintf(stderr, "stream(%p)=%d, sum_dep_weight = %d; want %d\n", stream,
+ stream->stream_id, n, stream->sum_dep_weight);
+ assert(0);
+ }
+ for (si = stream->dep_next; si; si = si->sib_next) {
+ check_sum_dep(si);
+ }
+}
+
+static void check_dep_prev(nghttp2_stream *stream) {
+ nghttp2_stream *si;
+ for (si = stream->dep_next; si; si = si->sib_next) {
+ if (si->dep_prev != stream) {
+ fprintf(stderr, "si->dep_prev = %p; want %p\n", si->dep_prev, stream);
+ assert(0);
+ }
+ check_dep_prev(si);
+ }
+}
+
+#endif /* STREAM_DEP_DEBUG */
+
+#ifdef STREAM_DEP_DEBUG
+static void validate_tree(nghttp2_stream *stream) {
+ nghttp2_stream *si;
+
+ if (!stream) {
+ return;
+ }
+
+ for (; stream->dep_prev; stream = stream->dep_prev)
+ ;
+
+ assert(stream->stream_id == 0);
+ assert(!stream->queued);
+
+ fprintf(stderr, "checking...\n");
+ if (nghttp2_pq_empty(&stream->obq)) {
+ fprintf(stderr, "root obq empty\n");
+ for (si = stream->dep_next; si; si = si->sib_next) {
+ ensure_inactive(si);
+ }
+ } else {
+ for (si = stream->dep_next; si; si = si->sib_next) {
+ check_queued(si);
+ }
+ }
+
+ check_sum_dep(stream);
+ check_dep_prev(stream);
+}
+#else /* !STREAM_DEP_DEBUG */
+static void validate_tree(nghttp2_stream *stream _U_) {}
+#endif /* !STREAM_DEP_DEBUG*/
+
+static int stream_update_dep_on_attach_item(nghttp2_stream *stream) {
+ int rv;
+
+ rv = stream_obq_push(stream->dep_prev, stream);
+ if (rv != 0) {
+ return rv;
+ }
+
+ validate_tree(stream);
+ return 0;
+}
+
+static int stream_update_dep_on_detach_item(nghttp2_stream *stream) {
+ if (nghttp2_pq_empty(&stream->obq)) {
+ stream_obq_remove(stream);
+ }
+
+ validate_tree(stream);
+
+ return 0;
+}
+
+int nghttp2_stream_attach_item(nghttp2_stream *stream,
+ nghttp2_outbound_item *item) {
+ int rv;
+
+ assert((stream->flags & NGHTTP2_STREAM_FLAG_DEFERRED_ALL) == 0);
+ assert(stream->item == NULL);
+
+ DEBUGF(fprintf(stderr, "stream: stream=%d attach item=%p\n",
+ stream->stream_id, item));
+
+ stream->item = item;
+
+ rv = stream_update_dep_on_attach_item(stream);
+ if (rv != 0) {
+ /* This may relave stream->queued == 1, but stream->item == NULL.
+ But only consequence of this error is fatal one, and session
+ destruction. In that execution path, these inconsistency does
+ not matter. */
+ stream->item = NULL;
+ return rv;
+ }
+
+ return 0;
+}
+
+int nghttp2_stream_detach_item(nghttp2_stream *stream) {
+ DEBUGF(fprintf(stderr, "stream: stream=%d detach item=%p\n",
+ stream->stream_id, stream->item));
+
+ stream->item = NULL;
+ stream->flags = (uint8_t)(stream->flags & ~NGHTTP2_STREAM_FLAG_DEFERRED_ALL);
+
+ return stream_update_dep_on_detach_item(stream);
+}
+
+int nghttp2_stream_defer_item(nghttp2_stream *stream, uint8_t flags) {
+ assert(stream->item);
+
+ DEBUGF(fprintf(stderr, "stream: stream=%d defer item=%p cause=%02x\n",
+ stream->stream_id, stream->item, flags));
+
+ stream->flags |= flags;
+
+ return stream_update_dep_on_detach_item(stream);
+}
+
+int nghttp2_stream_resume_deferred_item(nghttp2_stream *stream, uint8_t flags) {
+ assert(stream->item);
+
+ DEBUGF(fprintf(stderr, "stream: stream=%d resume item=%p flags=%02x\n",
+ stream->stream_id, stream->item, flags));
+
+ stream->flags = (uint8_t)(stream->flags & ~flags);
+
+ if (stream->flags & NGHTTP2_STREAM_FLAG_DEFERRED_ALL) {
+ return 0;
+ }
+
+ return stream_update_dep_on_attach_item(stream);
+}
+
+int nghttp2_stream_check_deferred_item(nghttp2_stream *stream) {
+ return stream->item && (stream->flags & NGHTTP2_STREAM_FLAG_DEFERRED_ALL);
+}
+
+int nghttp2_stream_check_deferred_by_flow_control(nghttp2_stream *stream) {
+ return stream->item &&
+ (stream->flags & NGHTTP2_STREAM_FLAG_DEFERRED_FLOW_CONTROL);
+}
+
+static int update_initial_window_size(int32_t *window_size_ptr,
+ int32_t new_initial_window_size,
+ int32_t old_initial_window_size) {
+ int64_t new_window_size = (int64_t)(*window_size_ptr) +
+ new_initial_window_size - old_initial_window_size;
+ if (INT32_MIN > new_window_size ||
+ new_window_size > NGHTTP2_MAX_WINDOW_SIZE) {
+ return -1;
+ }
+ *window_size_ptr = (int32_t)new_window_size;
+ return 0;
+}
+
+int nghttp2_stream_update_remote_initial_window_size(
+ nghttp2_stream *stream, int32_t new_initial_window_size,
+ int32_t old_initial_window_size) {
+ return update_initial_window_size(&stream->remote_window_size,
+ new_initial_window_size,
+ old_initial_window_size);
+}
+
+int nghttp2_stream_update_local_initial_window_size(
+ nghttp2_stream *stream, int32_t new_initial_window_size,
+ int32_t old_initial_window_size) {
+ return update_initial_window_size(&stream->local_window_size,
+ new_initial_window_size,
+ old_initial_window_size);
+}
+
+void nghttp2_stream_promise_fulfilled(nghttp2_stream *stream) {
+ stream->state = NGHTTP2_STREAM_OPENED;
+ stream->flags = (uint8_t)(stream->flags & ~NGHTTP2_STREAM_FLAG_PUSH);
+}
+
+int nghttp2_stream_dep_find_ancestor(nghttp2_stream *stream,
+ nghttp2_stream *target) {
+ for (; stream; stream = stream->dep_prev) {
+ if (stream == target) {
+ return 1;
+ }
+ }
+ return 0;
+}
+
+int nghttp2_stream_dep_insert(nghttp2_stream *dep_stream,
+ nghttp2_stream *stream) {
+ nghttp2_stream *si;
+ int rv;
+
+ DEBUGF(fprintf(stderr,
+ "stream: dep_insert dep_stream(%p)=%d, stream(%p)=%d\n",
+ dep_stream, dep_stream->stream_id, stream, stream->stream_id));
+
+ stream->sum_dep_weight = dep_stream->sum_dep_weight;
+ dep_stream->sum_dep_weight = stream->weight;
+
+ if (dep_stream->dep_next) {
+ for (si = dep_stream->dep_next; si; si = si->sib_next) {
+ si->dep_prev = stream;
+ if (si->queued) {
+ rv = stream_obq_move(stream, dep_stream, si);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+ }
+
+ if (stream_subtree_active(stream)) {
+ rv = stream_obq_push(dep_stream, stream);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+
+ stream->dep_next = dep_stream->dep_next;
+ }
+
+ dep_stream->dep_next = stream;
+ stream->dep_prev = dep_stream;
+
+ validate_tree(stream);
+
+ return 0;
+}
+
+static void set_dep_prev(nghttp2_stream *stream, nghttp2_stream *dep) {
+ for (; stream; stream = stream->sib_next) {
+ stream->dep_prev = dep;
+ }
+}
+
+static void link_dep(nghttp2_stream *dep_stream, nghttp2_stream *stream) {
+ dep_stream->dep_next = stream;
+ if (stream) {
+ stream->dep_prev = dep_stream;
+ }
+}
+
+static void link_sib(nghttp2_stream *a, nghttp2_stream *b) {
+ a->sib_next = b;
+ if (b) {
+ b->sib_prev = a;
+ }
+}
+
+static void insert_link_dep(nghttp2_stream *dep_stream,
+ nghttp2_stream *stream) {
+ nghttp2_stream *sib_next;
+
+ assert(stream->sib_prev == NULL);
+
+ sib_next = dep_stream->dep_next;
+
+ link_sib(stream, sib_next);
+
+ link_dep(dep_stream, stream);
+}
+
+static void unlink_sib(nghttp2_stream *stream) {
+ nghttp2_stream *prev, *next, *dep_next;
+
+ prev = stream->sib_prev;
+ dep_next = stream->dep_next;
+
+ assert(prev);
+
+ if (dep_next) {
+ /*
+ * prev--stream(--sib_next--...)
+ * |
+ * dep_next
+ */
+
+ link_sib(prev, dep_next);
+
+ set_dep_prev(dep_next, stream->dep_prev);
+
+ if (stream->sib_next) {
+ link_sib(stream_last_sib(dep_next), stream->sib_next);
+ }
+ } else {
+ /*
+ * prev--stream(--sib_next--...)
+ */
+ next = stream->sib_next;
+
+ prev->sib_next = next;
+
+ if (next) {
+ next->sib_prev = prev;
+ }
+ }
+}
+
+static void unlink_dep(nghttp2_stream *stream) {
+ nghttp2_stream *prev, *next, *dep_next;
+
+ prev = stream->dep_prev;
+ dep_next = stream->dep_next;
+
+ assert(prev);
+
+ if (dep_next) {
+ /*
+ * prev
+ * |
+ * stream(--sib_next--...)
+ * |
+ * dep_next
+ */
+ link_dep(prev, dep_next);
+
+ set_dep_prev(dep_next, stream->dep_prev);
+
+ if (stream->sib_next) {
+ link_sib(stream_last_sib(dep_next), stream->sib_next);
+ }
+
+ } else if (stream->sib_next) {
+ /*
+ * prev
+ * |
+ * stream--sib_next
+ */
+ next = stream->sib_next;
+
+ next->sib_prev = NULL;
+
+ link_dep(prev, next);
+ } else {
+ prev->dep_next = NULL;
+ }
+}
+
+void nghttp2_stream_dep_add(nghttp2_stream *dep_stream,
+ nghttp2_stream *stream) {
+ DEBUGF(fprintf(stderr, "stream: dep_add dep_stream(%p)=%d, stream(%p)=%d\n",
+ dep_stream, dep_stream->stream_id, stream, stream->stream_id));
+
+ dep_stream->sum_dep_weight += stream->weight;
+
+ if (dep_stream->dep_next == NULL) {
+ link_dep(dep_stream, stream);
+ } else {
+ insert_link_dep(dep_stream, stream);
+ }
+
+ validate_tree(stream);
+}
+
+int nghttp2_stream_dep_remove(nghttp2_stream *stream) {
+ nghttp2_stream *dep_prev, *si;
+ int32_t sum_dep_weight_delta;
+ int rv;
+
+ DEBUGF(fprintf(stderr, "stream: dep_remove stream(%p)=%d\n", stream,
+ stream->stream_id));
+
+ /* Distribute weight of |stream| to direct descendants */
+ sum_dep_weight_delta = -stream->weight;
+
+ for (si = stream->dep_next; si; si = si->sib_next) {
+ si->weight = nghttp2_stream_dep_distributed_weight(stream, si->weight);
+
+ sum_dep_weight_delta += si->weight;
+
+ if (si->queued) {
+ rv = stream_obq_move(stream->dep_prev, stream, si);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+ }
+
+ assert(stream->dep_prev);
+
+ dep_prev = stream->dep_prev;
+
+ dep_prev->sum_dep_weight += sum_dep_weight_delta;
+
+ if (stream->queued) {
+ stream_obq_remove(stream);
+ }
+
+ if (stream->sib_prev) {
+ unlink_sib(stream);
+ } else {
+ unlink_dep(stream);
+ }
+
+ stream->sum_dep_weight = 0;
+
+ stream->dep_prev = NULL;
+ stream->dep_next = NULL;
+ stream->sib_prev = NULL;
+ stream->sib_next = NULL;
+
+ validate_tree(dep_prev);
+
+ return 0;
+}
+
+int nghttp2_stream_dep_insert_subtree(nghttp2_stream *dep_stream,
+ nghttp2_stream *stream) {
+ nghttp2_stream *last_sib;
+ nghttp2_stream *dep_next;
+ nghttp2_stream *si;
+ int rv;
+
+ DEBUGF(fprintf(stderr, "stream: dep_insert_subtree dep_stream(%p)=%d "
+ "stream(%p)=%d\n",
+ dep_stream, dep_stream->stream_id, stream, stream->stream_id));
+
+ stream->sum_dep_weight += dep_stream->sum_dep_weight;
+ dep_stream->sum_dep_weight = stream->weight;
+
+ if (dep_stream->dep_next) {
+ dep_next = dep_stream->dep_next;
+
+ link_dep(dep_stream, stream);
+
+ if (stream->dep_next) {
+ last_sib = stream_last_sib(stream->dep_next);
+
+ link_sib(last_sib, dep_next);
+ } else {
+ link_dep(stream, dep_next);
+ }
+
+ for (si = dep_next; si; si = si->sib_next) {
+ si->dep_prev = stream;
+ if (si->queued) {
+ rv = stream_obq_move(stream, dep_stream, si);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+ }
+ } else {
+ link_dep(dep_stream, stream);
+ }
+
+ if (stream_subtree_active(stream)) {
+ rv = stream_obq_push(dep_stream, stream);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+
+ validate_tree(dep_stream);
+
+ return 0;
+}
+
+int nghttp2_stream_dep_add_subtree(nghttp2_stream *dep_stream,
+ nghttp2_stream *stream) {
+ int rv;
+
+ DEBUGF(fprintf(stderr, "stream: dep_add_subtree dep_stream(%p)=%d "
+ "stream(%p)=%d\n",
+ dep_stream, dep_stream->stream_id, stream, stream->stream_id));
+
+ dep_stream->sum_dep_weight += stream->weight;
+
+ if (dep_stream->dep_next) {
+ insert_link_dep(dep_stream, stream);
+ } else {
+ link_dep(dep_stream, stream);
+ }
+
+ if (stream_subtree_active(stream)) {
+ rv = stream_obq_push(dep_stream, stream);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+
+ validate_tree(dep_stream);
+
+ return 0;
+}
+
+void nghttp2_stream_dep_remove_subtree(nghttp2_stream *stream) {
+ nghttp2_stream *next, *dep_prev;
+
+ DEBUGF(fprintf(stderr, "stream: dep_remove_subtree stream(%p)=%d\n", stream,
+ stream->stream_id));
+
+ assert(stream->dep_prev);
+
+ dep_prev = stream->dep_prev;
+
+ if (stream->sib_prev) {
+ link_sib(stream->sib_prev, stream->sib_next);
+ } else {
+ next = stream->sib_next;
+
+ link_dep(dep_prev, next);
+
+ if (next) {
+ next->sib_prev = NULL;
+ }
+ }
+
+ dep_prev->sum_dep_weight -= stream->weight;
+
+ if (stream->queued) {
+ stream_obq_remove(stream);
+ }
+
+ validate_tree(dep_prev);
+
+ stream->sib_prev = NULL;
+ stream->sib_next = NULL;
+ stream->dep_prev = NULL;
+}
+
+int nghttp2_stream_in_dep_tree(nghttp2_stream *stream) {
+ return stream->dep_prev || stream->dep_next || stream->sib_prev ||
+ stream->sib_next;
+}
+
+nghttp2_outbound_item *
+nghttp2_stream_next_outbound_item(nghttp2_stream *stream) {
+ nghttp2_pq_entry *ent;
+ nghttp2_stream *si;
+
+ for (;;) {
+ if (stream_active(stream)) {
+ /* Update ascendant's descendant_last_cycle here, so that we can
+ assure that new stream is scheduled based on it. */
+ for (si = stream; si->dep_prev; si = si->dep_prev) {
+ si->dep_prev->descendant_last_cycle = si->cycle;
+ }
+ return stream->item;
+ }
+ ent = nghttp2_pq_top(&stream->obq);
+ if (!ent) {
+ return NULL;
+ }
+ stream = nghttp2_struct_of(ent, nghttp2_stream, pq_entry);
+ }
+}
+
+nghttp2_stream_proto_state nghttp2_stream_get_state(nghttp2_stream *stream) {
+ if (stream->flags & NGHTTP2_STREAM_FLAG_CLOSED) {
+ return NGHTTP2_STREAM_STATE_CLOSED;
+ }
+
+ if (stream->flags & NGHTTP2_STREAM_FLAG_PUSH) {
+ if (stream->shut_flags & NGHTTP2_SHUT_RD) {
+ return NGHTTP2_STREAM_STATE_RESERVED_LOCAL;
+ }
+
+ if (stream->shut_flags & NGHTTP2_SHUT_WR) {
+ return NGHTTP2_STREAM_STATE_RESERVED_REMOTE;
+ }
+ }
+
+ if (stream->shut_flags & NGHTTP2_SHUT_RD) {
+ return NGHTTP2_STREAM_STATE_HALF_CLOSED_REMOTE;
+ }
+
+ if (stream->shut_flags & NGHTTP2_SHUT_WR) {
+ return NGHTTP2_STREAM_STATE_HALF_CLOSED_LOCAL;
+ }
+
+ if (stream->state == NGHTTP2_STREAM_IDLE) {
+ return NGHTTP2_STREAM_STATE_IDLE;
+ }
+
+ return NGHTTP2_STREAM_STATE_OPEN;
+}
+
+nghttp2_stream *nghttp2_stream_get_parent(nghttp2_stream *stream) {
+ return stream->dep_prev;
+}
+
+nghttp2_stream *nghttp2_stream_get_next_sibling(nghttp2_stream *stream) {
+ return stream->sib_next;
+}
+
+nghttp2_stream *nghttp2_stream_get_previous_sibling(nghttp2_stream *stream) {
+ return stream->sib_prev;
+}
+
+nghttp2_stream *nghttp2_stream_get_first_child(nghttp2_stream *stream) {
+ return stream->dep_next;
+}
+
+int32_t nghttp2_stream_get_weight(nghttp2_stream *stream) {
+ return stream->weight;
+}
+
+int32_t nghttp2_stream_get_sum_dependency_weight(nghttp2_stream *stream) {
+ return stream->sum_dep_weight;
+}
+
+int32_t nghttp2_stream_get_stream_id(nghttp2_stream *stream) {
+ return stream->stream_id;
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012, 2013 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "nghttp2_submit.h"
+
+#include <string.h>
+#include <assert.h>
+
+#include "nghttp2_session.h"
+#include "nghttp2_frame.h"
+#include "nghttp2_helper.h"
+#include "nghttp2_priority_spec.h"
+
+/*
+ * Detects the dependency error, that is stream attempted to depend on
+ * itself. If |stream_id| is -1, we use session->next_stream_id as
+ * stream ID.
+ *
+ * This function returns 0 if it succeeds, or one of the following
+ * error codes:
+ *
+ * NGHTTP2_ERR_INVALID_ARGUMENT
+ * Stream attempted to depend on itself.
+ */
+static int detect_self_dependency(nghttp2_session *session, int32_t stream_id,
+ const nghttp2_priority_spec *pri_spec) {
+ assert(pri_spec);
+
+ if (stream_id == -1) {
+ if ((int32_t)session->next_stream_id == pri_spec->stream_id) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+ return 0;
+ }
+
+ if (stream_id == pri_spec->stream_id) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ return 0;
+}
+
+/* This function takes ownership of |nva_copy|. Regardless of the
+ return value, the caller must not free |nva_copy| after this
+ function returns. */
+static int32_t submit_headers_shared(nghttp2_session *session, uint8_t flags,
+ int32_t stream_id,
+ const nghttp2_priority_spec *pri_spec,
+ nghttp2_nv *nva_copy, size_t nvlen,
+ const nghttp2_data_provider *data_prd,
+ void *stream_user_data) {
+ int rv;
+ uint8_t flags_copy;
+ nghttp2_outbound_item *item = NULL;
+ nghttp2_frame *frame = NULL;
+ nghttp2_headers_category hcat;
+ nghttp2_mem *mem;
+
+ mem = &session->mem;
+
+ item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
+ if (item == NULL) {
+ rv = NGHTTP2_ERR_NOMEM;
+ goto fail;
+ }
+
+ nghttp2_outbound_item_init(item);
+
+ if (data_prd != NULL && data_prd->read_callback != NULL) {
+ item->aux_data.headers.data_prd = *data_prd;
+ }
+
+ item->aux_data.headers.stream_user_data = stream_user_data;
+
+ flags_copy =
+ (uint8_t)((flags & (NGHTTP2_FLAG_END_STREAM | NGHTTP2_FLAG_PRIORITY)) |
+ NGHTTP2_FLAG_END_HEADERS);
+
+ if (stream_id == -1) {
+ if (session->next_stream_id > INT32_MAX) {
+ rv = NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE;
+ goto fail;
+ }
+
+ stream_id = (int32_t)session->next_stream_id;
+ session->next_stream_id += 2;
+
+ hcat = NGHTTP2_HCAT_REQUEST;
+ } else {
+ /* More specific categorization will be done later. */
+ hcat = NGHTTP2_HCAT_HEADERS;
+ }
+
+ frame = &item->frame;
+
+ nghttp2_frame_headers_init(&frame->headers, flags_copy, stream_id, hcat,
+ pri_spec, nva_copy, nvlen);
+
+ rv = nghttp2_session_add_item(session, item);
+
+ if (rv != 0) {
+ nghttp2_frame_headers_free(&frame->headers, mem);
+ goto fail2;
+ }
+
+ if (hcat == NGHTTP2_HCAT_REQUEST) {
+ return stream_id;
+ }
+
+ return 0;
+
+fail:
+ /* nghttp2_frame_headers_init() takes ownership of nva_copy. */
+ nghttp2_nv_array_del(nva_copy, mem);
+fail2:
+ nghttp2_mem_free(mem, item);
+
+ return rv;
+}
+
+static int32_t submit_headers_shared_nva(nghttp2_session *session,
+ uint8_t flags, int32_t stream_id,
+ const nghttp2_priority_spec *pri_spec,
+ const nghttp2_nv *nva, size_t nvlen,
+ const nghttp2_data_provider *data_prd,
+ void *stream_user_data) {
+ int rv;
+ nghttp2_nv *nva_copy;
+ nghttp2_priority_spec copy_pri_spec;
+ nghttp2_mem *mem;
+
+ mem = &session->mem;
+
+ if (pri_spec) {
+ copy_pri_spec = *pri_spec;
+ nghttp2_priority_spec_normalize_weight(©_pri_spec);
+ } else {
+ nghttp2_priority_spec_default_init(©_pri_spec);
+ }
+
+ rv = nghttp2_nv_array_copy(&nva_copy, nva, nvlen, mem);
+ if (rv < 0) {
+ return rv;
+ }
+
+ return submit_headers_shared(session, flags, stream_id, ©_pri_spec,
+ nva_copy, nvlen, data_prd, stream_user_data);
+}
+
+int nghttp2_submit_trailer(nghttp2_session *session, int32_t stream_id,
+ const nghttp2_nv *nva, size_t nvlen) {
+ if (stream_id <= 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ return (int)submit_headers_shared_nva(session, NGHTTP2_FLAG_END_STREAM,
+ stream_id, NULL, nva, nvlen, NULL,
+ NULL);
+}
+
+int32_t nghttp2_submit_headers(nghttp2_session *session, uint8_t flags,
+ int32_t stream_id,
+ const nghttp2_priority_spec *pri_spec,
+ const nghttp2_nv *nva, size_t nvlen,
+ void *stream_user_data) {
+ int rv;
+
+ if (stream_id == -1) {
+ if (session->server) {
+ return NGHTTP2_ERR_PROTO;
+ }
+ } else if (stream_id <= 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ flags &= NGHTTP2_FLAG_END_STREAM;
+
+ if (pri_spec && !nghttp2_priority_spec_check_default(pri_spec)) {
+ rv = detect_self_dependency(session, stream_id, pri_spec);
+ if (rv != 0) {
+ return rv;
+ }
+
+ flags |= NGHTTP2_FLAG_PRIORITY;
+ } else {
+ pri_spec = NULL;
+ }
+
+ return submit_headers_shared_nva(session, flags, stream_id, pri_spec, nva,
+ nvlen, NULL, stream_user_data);
+}
+
+int nghttp2_submit_ping(nghttp2_session *session, uint8_t flags,
+ const uint8_t *opaque_data) {
+ flags &= NGHTTP2_FLAG_ACK;
+ return nghttp2_session_add_ping(session, flags, opaque_data);
+}
+
+int nghttp2_submit_priority(nghttp2_session *session, uint8_t flags _U_,
+ int32_t stream_id,
+ const nghttp2_priority_spec *pri_spec) {
+ int rv;
+ nghttp2_outbound_item *item;
+ nghttp2_frame *frame;
+ nghttp2_priority_spec copy_pri_spec;
+ nghttp2_mem *mem;
+
+ mem = &session->mem;
+
+ if (stream_id == 0 || pri_spec == NULL) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ if (stream_id == pri_spec->stream_id) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ copy_pri_spec = *pri_spec;
+
+ nghttp2_priority_spec_normalize_weight(©_pri_spec);
+
+ item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
+
+ if (item == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ nghttp2_outbound_item_init(item);
+
+ frame = &item->frame;
+
+ nghttp2_frame_priority_init(&frame->priority, stream_id, ©_pri_spec);
+
+ rv = nghttp2_session_add_item(session, item);
+
+ if (rv != 0) {
+ nghttp2_frame_priority_free(&frame->priority);
+ nghttp2_mem_free(mem, item);
+
+ return rv;
+ }
+
+ return 0;
+}
+
+int nghttp2_submit_rst_stream(nghttp2_session *session, uint8_t flags _U_,
+ int32_t stream_id, uint32_t error_code) {
+ if (stream_id == 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ return nghttp2_session_add_rst_stream(session, stream_id, error_code);
+}
+
+int nghttp2_submit_goaway(nghttp2_session *session, uint8_t flags _U_,
+ int32_t last_stream_id, uint32_t error_code,
+ const uint8_t *opaque_data, size_t opaque_data_len) {
+ if (session->goaway_flags & NGHTTP2_GOAWAY_TERM_ON_SEND) {
+ return 0;
+ }
+ return nghttp2_session_add_goaway(session, last_stream_id, error_code,
+ opaque_data, opaque_data_len,
+ NGHTTP2_GOAWAY_AUX_NONE);
+}
+
+int nghttp2_submit_shutdown_notice(nghttp2_session *session) {
+ if (!session->server) {
+ return NGHTTP2_ERR_INVALID_STATE;
+ }
+ if (session->goaway_flags) {
+ return 0;
+ }
+ return nghttp2_session_add_goaway(session, (1u << 31) - 1, NGHTTP2_NO_ERROR,
+ NULL, 0,
+ NGHTTP2_GOAWAY_AUX_SHUTDOWN_NOTICE);
+}
+
+int nghttp2_submit_settings(nghttp2_session *session, uint8_t flags _U_,
+ const nghttp2_settings_entry *iv, size_t niv) {
+ return nghttp2_session_add_settings(session, NGHTTP2_FLAG_NONE, iv, niv);
+}
+
+int32_t nghttp2_submit_push_promise(nghttp2_session *session, uint8_t flags _U_,
+ int32_t stream_id, const nghttp2_nv *nva,
+ size_t nvlen,
+ void *promised_stream_user_data) {
+ nghttp2_outbound_item *item;
+ nghttp2_frame *frame;
+ nghttp2_nv *nva_copy;
+ uint8_t flags_copy;
+ int32_t promised_stream_id;
+ int rv;
+ nghttp2_mem *mem;
+
+ mem = &session->mem;
+
+ if (stream_id <= 0 || nghttp2_session_is_my_stream_id(session, stream_id)) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ if (!session->server) {
+ return NGHTTP2_ERR_PROTO;
+ }
+
+ /* All 32bit signed stream IDs are spent. */
+ if (session->next_stream_id > INT32_MAX) {
+ return NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE;
+ }
+
+ item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
+ if (item == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ nghttp2_outbound_item_init(item);
+
+ item->aux_data.headers.stream_user_data = promised_stream_user_data;
+
+ frame = &item->frame;
+
+ rv = nghttp2_nv_array_copy(&nva_copy, nva, nvlen, mem);
+ if (rv < 0) {
+ nghttp2_mem_free(mem, item);
+ return rv;
+ }
+
+ flags_copy = NGHTTP2_FLAG_END_HEADERS;
+
+ promised_stream_id = (int32_t)session->next_stream_id;
+ session->next_stream_id += 2;
+
+ nghttp2_frame_push_promise_init(&frame->push_promise, flags_copy, stream_id,
+ promised_stream_id, nva_copy, nvlen);
+
+ rv = nghttp2_session_add_item(session, item);
+
+ if (rv != 0) {
+ nghttp2_frame_push_promise_free(&frame->push_promise, mem);
+ nghttp2_mem_free(mem, item);
+
+ return rv;
+ }
+
+ return promised_stream_id;
+}
+
+int nghttp2_submit_window_update(nghttp2_session *session, uint8_t flags,
+ int32_t stream_id,
+ int32_t window_size_increment) {
+ int rv;
+ nghttp2_stream *stream = 0;
+ if (window_size_increment == 0) {
+ return 0;
+ }
+ flags = 0;
+ if (stream_id == 0) {
+ rv = nghttp2_adjust_local_window_size(
+ &session->local_window_size, &session->recv_window_size,
+ &session->recv_reduction, &window_size_increment);
+ if (rv != 0) {
+ return rv;
+ }
+ } else {
+ stream = nghttp2_session_get_stream(session, stream_id);
+ if (!stream) {
+ return 0;
+ }
+
+ rv = nghttp2_adjust_local_window_size(
+ &stream->local_window_size, &stream->recv_window_size,
+ &stream->recv_reduction, &window_size_increment);
+ if (rv != 0) {
+ return rv;
+ }
+ }
+
+ if (window_size_increment > 0) {
+ if (stream_id == 0) {
+ session->consumed_size =
+ nghttp2_max(0, session->consumed_size - window_size_increment);
+ } else {
+ stream->consumed_size =
+ nghttp2_max(0, stream->consumed_size - window_size_increment);
+ }
+
+ return nghttp2_session_add_window_update(session, flags, stream_id,
+ window_size_increment);
+ }
+ return 0;
+}
+
+int nghttp2_session_set_local_window_size(nghttp2_session *session,
+ uint8_t flags, int32_t stream_id,
+ int32_t window_size) {
+ int32_t window_size_increment;
+ nghttp2_stream *stream;
+ int rv;
+
+ if (window_size < 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ flags = 0;
+
+ if (stream_id == 0) {
+ window_size_increment = window_size - session->local_window_size;
+
+ if (window_size_increment == 0) {
+ return 0;
+ }
+
+ if (window_size_increment < 0) {
+ return nghttp2_adjust_local_window_size(
+ &session->local_window_size, &session->recv_window_size,
+ &session->recv_reduction, &window_size_increment);
+ }
+
+ rv = nghttp2_increase_local_window_size(
+ &session->local_window_size, &session->recv_window_size,
+ &session->recv_reduction, &window_size_increment);
+
+ if (rv != 0) {
+ return rv;
+ }
+ } else {
+ stream = nghttp2_session_get_stream(session, stream_id);
+
+ if (stream == NULL) {
+ return 0;
+ }
+
+ window_size_increment = window_size - stream->local_window_size;
+
+ if (window_size_increment == 0) {
+ return 0;
+ }
+
+ if (window_size_increment < 0) {
+ return nghttp2_adjust_local_window_size(
+ &stream->local_window_size, &stream->recv_window_size,
+ &stream->recv_reduction, &window_size_increment);
+ }
+
+ rv = nghttp2_increase_local_window_size(
+ &stream->local_window_size, &stream->recv_window_size,
+ &stream->recv_reduction, &window_size_increment);
+
+ if (rv != 0) {
+ return rv;
+ }
+ }
+
+ if (window_size_increment > 0) {
+ return nghttp2_session_add_window_update(session, flags, stream_id,
+ window_size_increment);
+ }
+
+ return 0;
+}
+
+int nghttp2_submit_altsvc(nghttp2_session *session, uint8_t flags _U_,
+ int32_t stream_id, const uint8_t *origin,
+ size_t origin_len, const uint8_t *field_value,
+ size_t field_value_len) {
+ nghttp2_mem *mem;
+ uint8_t *buf, *p;
+ uint8_t *origin_copy;
+ uint8_t *field_value_copy;
+ nghttp2_outbound_item *item;
+ nghttp2_frame *frame;
+ nghttp2_ext_altsvc *altsvc;
+ int rv;
+
+ mem = &session->mem;
+
+ if (!session->server) {
+ return NGHTTP2_ERR_INVALID_STATE;
+ }
+
+ if (2 + origin_len + field_value_len > NGHTTP2_MAX_PAYLOADLEN) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ if (stream_id == 0) {
+ if (origin_len == 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+ } else if (origin_len != 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ buf = nghttp2_mem_malloc(mem, origin_len + field_value_len + 2);
+ if (buf == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ p = buf;
+
+ origin_copy = p;
+ if (origin_len) {
+ p = nghttp2_cpymem(p, origin, origin_len);
+ }
+ *p++ = '\0';
+
+ field_value_copy = p;
+ if (field_value_len) {
+ p = nghttp2_cpymem(p, field_value, field_value_len);
+ }
+ *p++ = '\0';
+
+ item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
+ if (item == NULL) {
+ rv = NGHTTP2_ERR_NOMEM;
+ goto fail_item_malloc;
+ }
+
+ nghttp2_outbound_item_init(item);
+
+ item->aux_data.ext.builtin = 1;
+
+ altsvc = &item->ext_frame_payload.altsvc;
+
+ frame = &item->frame;
+ frame->ext.payload = altsvc;
+
+ nghttp2_frame_altsvc_init(&frame->ext, stream_id, origin_copy, origin_len,
+ field_value_copy, field_value_len);
+
+ rv = nghttp2_session_add_item(session, item);
+ if (rv != 0) {
+ nghttp2_frame_altsvc_free(&frame->ext, mem);
+ nghttp2_mem_free(mem, item);
+
+ return rv;
+ }
+
+ return 0;
+
+fail_item_malloc:
+ free(buf);
+
+ return rv;
+}
+
+static uint8_t set_request_flags(const nghttp2_priority_spec *pri_spec,
+ const nghttp2_data_provider *data_prd) {
+ uint8_t flags = NGHTTP2_FLAG_NONE;
+ if (data_prd == NULL || data_prd->read_callback == NULL) {
+ flags |= NGHTTP2_FLAG_END_STREAM;
+ }
+
+ if (pri_spec) {
+ flags |= NGHTTP2_FLAG_PRIORITY;
+ }
+
+ return flags;
+}
+
+int32_t nghttp2_submit_request(nghttp2_session *session,
+ const nghttp2_priority_spec *pri_spec,
+ const nghttp2_nv *nva, size_t nvlen,
+ const nghttp2_data_provider *data_prd,
+ void *stream_user_data) {
+ uint8_t flags;
+ int rv;
+
+ if (session->server) {
+ return NGHTTP2_ERR_PROTO;
+ }
+
+ if (pri_spec && !nghttp2_priority_spec_check_default(pri_spec)) {
+ rv = detect_self_dependency(session, -1, pri_spec);
+ if (rv != 0) {
+ return rv;
+ }
+ } else {
+ pri_spec = NULL;
+ }
+
+ flags = set_request_flags(pri_spec, data_prd);
+
+ return submit_headers_shared_nva(session, flags, -1, pri_spec, nva, nvlen,
+ data_prd, stream_user_data);
+}
+
+static uint8_t set_response_flags(const nghttp2_data_provider *data_prd) {
+ uint8_t flags = NGHTTP2_FLAG_NONE;
+ if (data_prd == NULL || data_prd->read_callback == NULL) {
+ flags |= NGHTTP2_FLAG_END_STREAM;
+ }
+ return flags;
+}
+
+int nghttp2_submit_response(nghttp2_session *session, int32_t stream_id,
+ const nghttp2_nv *nva, size_t nvlen,
+ const nghttp2_data_provider *data_prd) {
+ uint8_t flags;
+
+ if (stream_id <= 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ if (!session->server) {
+ return NGHTTP2_ERR_PROTO;
+ }
+
+ flags = set_response_flags(data_prd);
+ return submit_headers_shared_nva(session, flags, stream_id, NULL, nva, nvlen,
+ data_prd, NULL);
+}
+
+int nghttp2_submit_data(nghttp2_session *session, uint8_t flags,
+ int32_t stream_id,
+ const nghttp2_data_provider *data_prd) {
+ int rv;
+ nghttp2_outbound_item *item;
+ nghttp2_frame *frame;
+ nghttp2_data_aux_data *aux_data;
+ uint8_t nflags = flags & NGHTTP2_FLAG_END_STREAM;
+ nghttp2_mem *mem;
+
+ mem = &session->mem;
+
+ if (stream_id == 0) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
+ if (item == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ nghttp2_outbound_item_init(item);
+
+ frame = &item->frame;
+ aux_data = &item->aux_data.data;
+ aux_data->data_prd = *data_prd;
+ aux_data->eof = 0;
+ aux_data->flags = nflags;
+
+ /* flags are sent on transmission */
+ nghttp2_frame_data_init(&frame->data, NGHTTP2_FLAG_NONE, stream_id);
+
+ rv = nghttp2_session_add_item(session, item);
+ if (rv != 0) {
+ nghttp2_frame_data_free(&frame->data);
+ nghttp2_mem_free(mem, item);
+ return rv;
+ }
+ return 0;
+}
+
+ssize_t nghttp2_pack_settings_payload(uint8_t *buf, size_t buflen,
+ const nghttp2_settings_entry *iv,
+ size_t niv) {
+ if (!nghttp2_iv_check(iv, niv)) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ if (buflen < (niv * NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH)) {
+ return NGHTTP2_ERR_INSUFF_BUFSIZE;
+ }
+
+ return (ssize_t)nghttp2_frame_pack_settings_payload(buf, iv, niv);
+}
+
+int nghttp2_submit_extension(nghttp2_session *session, uint8_t type,
+ uint8_t flags, int32_t stream_id, void *payload) {
+ int rv;
+ nghttp2_outbound_item *item;
+ nghttp2_frame *frame;
+ nghttp2_mem *mem;
+
+ mem = &session->mem;
+
+ if (type <= NGHTTP2_CONTINUATION) {
+ return NGHTTP2_ERR_INVALID_ARGUMENT;
+ }
+
+ if (!session->callbacks.pack_extension_callback) {
+ return NGHTTP2_ERR_INVALID_STATE;
+ }
+
+ item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
+ if (item == NULL) {
+ return NGHTTP2_ERR_NOMEM;
+ }
+
+ nghttp2_outbound_item_init(item);
+
+ frame = &item->frame;
+ nghttp2_frame_extension_init(&frame->ext, type, flags, stream_id, payload);
+
+ rv = nghttp2_session_add_item(session, item);
+ if (rv != 0) {
+ nghttp2_frame_extension_free(&frame->ext);
+ nghttp2_mem_free(mem, item);
+ return rv;
+ }
+
+ return 0;
+}
--- /dev/null
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2012, 2013 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#include <nghttp2/nghttp2.h>
+
+static nghttp2_info version = {NGHTTP2_VERSION_AGE, NGHTTP2_VERSION_NUM,
+ NGHTTP2_VERSION, NGHTTP2_PROTO_VERSION_ID};
+
+nghttp2_info *nghttp2_version(int least_version) {
+ if (least_version > NGHTTP2_VERSION_NUM)
+ return NULL;
+ return &version;
+}
--- /dev/null
+/* Based on src/http/ngx_http_parse.c from NGINX copyright Igor Sysoev
+ *
+ * Additional changes are licensed under the same terms as NGINX and
+ * copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+#include "http_parser.h"
+#include <assert.h>
+#include <stddef.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+#ifndef ULLONG_MAX
+# define ULLONG_MAX ((uint64_t) -1) /* 2^64-1 */
+#endif
+
+#ifndef MIN
+# define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
+
+#ifndef ARRAY_SIZE
+# define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
+#endif
+
+#ifndef BIT_AT
+# define BIT_AT(a, i) \
+ (!!((unsigned int) (a)[(unsigned int) (i) >> 3] & \
+ (1 << ((unsigned int) (i) & 7))))
+#endif
+
+#ifndef ELEM_AT
+# define ELEM_AT(a, i, v) ((unsigned int) (i) < ARRAY_SIZE(a) ? (a)[(i)] : (v))
+#endif
+
+#define SET_ERRNO(e) \
+do { \
+ parser->http_errno = (e); \
+} while(0)
+
+#define CURRENT_STATE() p_state
+#define UPDATE_STATE(V) p_state = (enum state) (V);
+#define RETURN(V) \
+do { \
+ parser->state = CURRENT_STATE(); \
+ return (V); \
+} while (0);
+#define REEXECUTE() \
+ goto reexecute; \
+
+
+#ifdef __GNUC__
+# define LIKELY(X) __builtin_expect(!!(X), 1)
+# define UNLIKELY(X) __builtin_expect(!!(X), 0)
+#else
+# define LIKELY(X) (X)
+# define UNLIKELY(X) (X)
+#endif
+
+
+/* Run the notify callback FOR, returning ER if it fails */
+#define CALLBACK_NOTIFY_(FOR, ER) \
+do { \
+ assert(HTTP_PARSER_ERRNO(parser) == HPE_OK); \
+ \
+ if (LIKELY(settings->on_##FOR)) { \
+ parser->state = CURRENT_STATE(); \
+ if (UNLIKELY(0 != settings->on_##FOR(parser))) { \
+ SET_ERRNO(HPE_CB_##FOR); \
+ } \
+ UPDATE_STATE(parser->state); \
+ \
+ /* We either errored above or got paused; get out */ \
+ if (UNLIKELY(HTTP_PARSER_ERRNO(parser) != HPE_OK)) { \
+ return (ER); \
+ } \
+ } \
+} while (0)
+
+/* Run the notify callback FOR and consume the current byte */
+#define CALLBACK_NOTIFY(FOR) CALLBACK_NOTIFY_(FOR, p - data + 1)
+
+/* Run the notify callback FOR and don't consume the current byte */
+#define CALLBACK_NOTIFY_NOADVANCE(FOR) CALLBACK_NOTIFY_(FOR, p - data)
+
+/* Run data callback FOR with LEN bytes, returning ER if it fails */
+#define CALLBACK_DATA_(FOR, LEN, ER) \
+do { \
+ assert(HTTP_PARSER_ERRNO(parser) == HPE_OK); \
+ \
+ if (FOR##_mark) { \
+ if (LIKELY(settings->on_##FOR)) { \
+ parser->state = CURRENT_STATE(); \
+ if (UNLIKELY(0 != \
+ settings->on_##FOR(parser, FOR##_mark, (LEN)))) { \
+ SET_ERRNO(HPE_CB_##FOR); \
+ } \
+ UPDATE_STATE(parser->state); \
+ \
+ /* We either errored above or got paused; get out */ \
+ if (UNLIKELY(HTTP_PARSER_ERRNO(parser) != HPE_OK)) { \
+ return (ER); \
+ } \
+ } \
+ FOR##_mark = NULL; \
+ } \
+} while (0)
+
+/* Run the data callback FOR and consume the current byte */
+#define CALLBACK_DATA(FOR) \
+ CALLBACK_DATA_(FOR, p - FOR##_mark, p - data + 1)
+
+/* Run the data callback FOR and don't consume the current byte */
+#define CALLBACK_DATA_NOADVANCE(FOR) \
+ CALLBACK_DATA_(FOR, p - FOR##_mark, p - data)
+
+/* Set the mark FOR; non-destructive if mark is already set */
+#define MARK(FOR) \
+do { \
+ if (!FOR##_mark) { \
+ FOR##_mark = p; \
+ } \
+} while (0)
+
+/* Don't allow the total size of the HTTP headers (including the status
+ * line) to exceed HTTP_MAX_HEADER_SIZE. This check is here to protect
+ * embedders against denial-of-service attacks where the attacker feeds
+ * us a never-ending header that the embedder keeps buffering.
+ *
+ * This check is arguably the responsibility of embedders but we're doing
+ * it on the embedder's behalf because most won't bother and this way we
+ * make the web a little safer. HTTP_MAX_HEADER_SIZE is still far bigger
+ * than any reasonable request or response so this should never affect
+ * day-to-day operation.
+ */
+#define COUNT_HEADER_SIZE(V) \
+do { \
+ parser->nread += (V); \
+ if (UNLIKELY(parser->nread > (HTTP_MAX_HEADER_SIZE))) { \
+ SET_ERRNO(HPE_HEADER_OVERFLOW); \
+ goto error; \
+ } \
+} while (0)
+
+
+#define PROXY_CONNECTION "proxy-connection"
+#define CONNECTION "connection"
+#define CONTENT_LENGTH "content-length"
+#define TRANSFER_ENCODING "transfer-encoding"
+#define UPGRADE "upgrade"
+#define CHUNKED "chunked"
+#define KEEP_ALIVE "keep-alive"
+#define CLOSE "close"
+
+
+static const char *method_strings[] =
+ {
+#define XX(num, name, string) #string,
+ HTTP_METHOD_MAP(XX)
+#undef XX
+ };
+
+
+/* Tokens as defined by rfc 2616. Also lowercases them.
+ * token = 1*<any CHAR except CTLs or separators>
+ * separators = "(" | ")" | "<" | ">" | "@"
+ * | "," | ";" | ":" | "\" | <">
+ * | "/" | "[" | "]" | "?" | "="
+ * | "{" | "}" | SP | HT
+ */
+static const char tokens[256] = {
+/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
+ 0, 0, 0, 0, 0, 0, 0, 0,
+/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
+ 0, 0, 0, 0, 0, 0, 0, 0,
+/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
+ 0, 0, 0, 0, 0, 0, 0, 0,
+/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
+ 0, 0, 0, 0, 0, 0, 0, 0,
+/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
+ 0, '!', 0, '#', '$', '%', '&', '\'',
+/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
+ 0, 0, '*', '+', 0, '-', '.', 0,
+/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
+ '0', '1', '2', '3', '4', '5', '6', '7',
+/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
+ '8', '9', 0, 0, 0, 0, 0, 0,
+/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
+ 0, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
+/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
+ 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
+/* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */
+ 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
+/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
+ 'x', 'y', 'z', 0, 0, 0, '^', '_',
+/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
+ '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
+/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
+ 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
+/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
+ 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
+/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
+ 'x', 'y', 'z', 0, '|', 0, '~', 0 };
+
+
+static const int8_t unhex[256] =
+ {-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
+ ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
+ ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
+ , 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,-1,-1,-1,-1,-1,-1
+ ,-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1
+ ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
+ ,-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1
+ ,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
+ };
+
+
+#if HTTP_PARSER_STRICT
+# define T(v) 0
+#else
+# define T(v) v
+#endif
+
+
+static const uint8_t normal_url_char[32] = {
+/* 0 nul 1 soh 2 stx 3 etx 4 eot 5 enq 6 ack 7 bel */
+ 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
+/* 8 bs 9 ht 10 nl 11 vt 12 np 13 cr 14 so 15 si */
+ 0 | T(2) | 0 | 0 | T(16) | 0 | 0 | 0,
+/* 16 dle 17 dc1 18 dc2 19 dc3 20 dc4 21 nak 22 syn 23 etb */
+ 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
+/* 24 can 25 em 26 sub 27 esc 28 fs 29 gs 30 rs 31 us */
+ 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,
+/* 32 sp 33 ! 34 " 35 # 36 $ 37 % 38 & 39 ' */
+ 0 | 2 | 4 | 0 | 16 | 32 | 64 | 128,
+/* 40 ( 41 ) 42 * 43 + 44 , 45 - 46 . 47 / */
+ 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
+/* 48 0 49 1 50 2 51 3 52 4 53 5 54 6 55 7 */
+ 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
+/* 56 8 57 9 58 : 59 ; 60 < 61 = 62 > 63 ? */
+ 1 | 2 | 4 | 8 | 16 | 32 | 64 | 0,
+/* 64 @ 65 A 66 B 67 C 68 D 69 E 70 F 71 G */
+ 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
+/* 72 H 73 I 74 J 75 K 76 L 77 M 78 N 79 O */
+ 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
+/* 80 P 81 Q 82 R 83 S 84 T 85 U 86 V 87 W */
+ 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
+/* 88 X 89 Y 90 Z 91 [ 92 \ 93 ] 94 ^ 95 _ */
+ 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
+/* 96 ` 97 a 98 b 99 c 100 d 101 e 102 f 103 g */
+ 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
+/* 104 h 105 i 106 j 107 k 108 l 109 m 110 n 111 o */
+ 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
+/* 112 p 113 q 114 r 115 s 116 t 117 u 118 v 119 w */
+ 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128,
+/* 120 x 121 y 122 z 123 { 124 | 125 } 126 ~ 127 del */
+ 1 | 2 | 4 | 8 | 16 | 32 | 64 | 0, };
+
+#undef T
+
+enum state
+ { s_dead = 1 /* important that this is > 0 */
+
+ , s_start_req_or_res
+ , s_res_or_resp_H
+ , s_start_res
+ , s_res_H
+ , s_res_HT
+ , s_res_HTT
+ , s_res_HTTP
+ , s_res_first_http_major
+ , s_res_http_major
+ , s_res_first_http_minor
+ , s_res_http_minor
+ , s_res_first_status_code
+ , s_res_status_code
+ , s_res_status_start
+ , s_res_status
+ , s_res_line_almost_done
+
+ , s_start_req
+
+ , s_req_method
+ , s_req_spaces_before_url
+ , s_req_schema
+ , s_req_schema_slash
+ , s_req_schema_slash_slash
+ , s_req_server_start
+ , s_req_server
+ , s_req_server_with_at
+ , s_req_path
+ , s_req_query_string_start
+ , s_req_query_string
+ , s_req_fragment_start
+ , s_req_fragment
+ , s_req_http_start
+ , s_req_http_H
+ , s_req_http_HT
+ , s_req_http_HTT
+ , s_req_http_HTTP
+ , s_req_first_http_major
+ , s_req_http_major
+ , s_req_first_http_minor
+ , s_req_http_minor
+ , s_req_line_almost_done
+
+ , s_header_field_start
+ , s_header_field
+ , s_header_value_discard_ws
+ , s_header_value_discard_ws_almost_done
+ , s_header_value_discard_lws
+ , s_header_value_start
+ , s_header_value
+ , s_header_value_lws
+
+ , s_header_almost_done
+
+ , s_chunk_size_start
+ , s_chunk_size
+ , s_chunk_parameters
+ , s_chunk_size_almost_done
+
+ , s_headers_almost_done
+ , s_headers_done
+
+ /* Important: 's_headers_done' must be the last 'header' state. All
+ * states beyond this must be 'body' states. It is used for overflow
+ * checking. See the PARSING_HEADER() macro.
+ */
+
+ , s_chunk_data
+ , s_chunk_data_almost_done
+ , s_chunk_data_done
+
+ , s_body_identity
+ , s_body_identity_eof
+
+ , s_message_done
+ };
+
+
+#define PARSING_HEADER(state) (state <= s_headers_done)
+
+
+enum header_states
+ { h_general = 0
+ , h_C
+ , h_CO
+ , h_CON
+
+ , h_matching_connection
+ , h_matching_proxy_connection
+ , h_matching_content_length
+ , h_matching_transfer_encoding
+ , h_matching_upgrade
+
+ , h_connection
+ , h_content_length
+ , h_transfer_encoding
+ , h_upgrade
+
+ , h_matching_transfer_encoding_chunked
+ , h_matching_connection_token_start
+ , h_matching_connection_keep_alive
+ , h_matching_connection_close
+ , h_matching_connection_upgrade
+ , h_matching_connection_token
+
+ , h_transfer_encoding_chunked
+ , h_connection_keep_alive
+ , h_connection_close
+ , h_connection_upgrade
+ };
+
+enum http_host_state
+ {
+ s_http_host_dead = 1
+ , s_http_userinfo_start
+ , s_http_userinfo
+ , s_http_host_start
+ , s_http_host_v6_start
+ , s_http_host
+ , s_http_host_v6
+ , s_http_host_v6_end
+ , s_http_host_v6_zone_start
+ , s_http_host_v6_zone
+ , s_http_host_port_start
+ , s_http_host_port
+};
+
+/* Macros for character classes; depends on strict-mode */
+#define CR '\r'
+#define LF '\n'
+#define LOWER(c) (unsigned char)(c | 0x20)
+#define IS_ALPHA(c) (LOWER(c) >= 'a' && LOWER(c) <= 'z')
+#define IS_NUM(c) ((c) >= '0' && (c) <= '9')
+#define IS_ALPHANUM(c) (IS_ALPHA(c) || IS_NUM(c))
+#define IS_HEX(c) (IS_NUM(c) || (LOWER(c) >= 'a' && LOWER(c) <= 'f'))
+#define IS_MARK(c) ((c) == '-' || (c) == '_' || (c) == '.' || \
+ (c) == '!' || (c) == '~' || (c) == '*' || (c) == '\'' || (c) == '(' || \
+ (c) == ')')
+#define IS_USERINFO_CHAR(c) (IS_ALPHANUM(c) || IS_MARK(c) || (c) == '%' || \
+ (c) == ';' || (c) == ':' || (c) == '&' || (c) == '=' || (c) == '+' || \
+ (c) == '$' || (c) == ',')
+
+#define STRICT_TOKEN(c) (tokens[(unsigned char)c])
+
+#if HTTP_PARSER_STRICT
+#define TOKEN(c) (tokens[(unsigned char)c])
+#define IS_URL_CHAR(c) (BIT_AT(normal_url_char, (unsigned char)c))
+#define IS_HOST_CHAR(c) (IS_ALPHANUM(c) || (c) == '.' || (c) == '-')
+#else
+#define TOKEN(c) ((c == ' ') ? ' ' : tokens[(unsigned char)c])
+#define IS_URL_CHAR(c) \
+ (BIT_AT(normal_url_char, (unsigned char)c) || ((c) & 0x80))
+#define IS_HOST_CHAR(c) \
+ (IS_ALPHANUM(c) || (c) == '.' || (c) == '-' || (c) == '_')
+#endif
+
+/**
+ * Verify that a char is a valid visible (printable) US-ASCII
+ * character or %x80-FF
+ **/
+#define IS_HEADER_CHAR(ch) \
+ (ch == CR || ch == LF || ch == 9 || ((unsigned char)ch > 31 && ch != 127))
+
+#define start_state (parser->type == HTTP_REQUEST ? s_start_req : s_start_res)
+
+
+#if HTTP_PARSER_STRICT
+# define STRICT_CHECK(cond) \
+do { \
+ if (cond) { \
+ SET_ERRNO(HPE_STRICT); \
+ goto error; \
+ } \
+} while (0)
+# define NEW_MESSAGE() (http_should_keep_alive(parser) ? start_state : s_dead)
+#else
+# define STRICT_CHECK(cond)
+# define NEW_MESSAGE() start_state
+#endif
+
+
+/* Map errno values to strings for human-readable output */
+#define HTTP_STRERROR_GEN(n, s) { "HPE_" #n, s },
+static struct {
+ const char *name;
+ const char *description;
+} http_strerror_tab[] = {
+ HTTP_ERRNO_MAP(HTTP_STRERROR_GEN)
+};
+#undef HTTP_STRERROR_GEN
+
+int http_message_needs_eof(const http_parser *parser);
+
+/* Our URL parser.
+ *
+ * This is designed to be shared by http_parser_execute() for URL validation,
+ * hence it has a state transition + byte-for-byte interface. In addition, it
+ * is meant to be embedded in http_parser_parse_url(), which does the dirty
+ * work of turning state transitions URL components for its API.
+ *
+ * This function should only be invoked with non-space characters. It is
+ * assumed that the caller cares about (and can detect) the transition between
+ * URL and non-URL states by looking for these.
+ */
+static enum state
+parse_url_char(enum state s, const char ch)
+{
+ if (ch == ' ' || ch == '\r' || ch == '\n') {
+ return s_dead;
+ }
+
+#if HTTP_PARSER_STRICT
+ if (ch == '\t' || ch == '\f') {
+ return s_dead;
+ }
+#endif
+
+ switch (s) {
+ case s_req_spaces_before_url:
+ /* Proxied requests are followed by scheme of an absolute URI (alpha).
+ * All methods except CONNECT are followed by '/' or '*'.
+ */
+
+ if (ch == '/' || ch == '*') {
+ return s_req_path;
+ }
+
+ if (IS_ALPHA(ch)) {
+ return s_req_schema;
+ }
+
+ break;
+
+ case s_req_schema:
+ if (IS_ALPHA(ch)) {
+ return s;
+ }
+
+ if (ch == ':') {
+ return s_req_schema_slash;
+ }
+
+ break;
+
+ case s_req_schema_slash:
+ if (ch == '/') {
+ return s_req_schema_slash_slash;
+ }
+
+ break;
+
+ case s_req_schema_slash_slash:
+ if (ch == '/') {
+ return s_req_server_start;
+ }
+
+ break;
+
+ case s_req_server_with_at:
+ if (ch == '@') {
+ return s_dead;
+ }
+
+ /* FALLTHROUGH */
+ case s_req_server_start:
+ case s_req_server:
+ if (ch == '/') {
+ return s_req_path;
+ }
+
+ if (ch == '?') {
+ return s_req_query_string_start;
+ }
+
+ if (ch == '@') {
+ return s_req_server_with_at;
+ }
+
+ if (IS_USERINFO_CHAR(ch) || ch == '[' || ch == ']') {
+ return s_req_server;
+ }
+
+ break;
+
+ case s_req_path:
+ if (IS_URL_CHAR(ch)) {
+ return s;
+ }
+
+ switch (ch) {
+ case '?':
+ return s_req_query_string_start;
+
+ case '#':
+ return s_req_fragment_start;
+ }
+
+ break;
+
+ case s_req_query_string_start:
+ case s_req_query_string:
+ if (IS_URL_CHAR(ch)) {
+ return s_req_query_string;
+ }
+
+ switch (ch) {
+ case '?':
+ /* allow extra '?' in query string */
+ return s_req_query_string;
+
+ case '#':
+ return s_req_fragment_start;
+ }
+
+ break;
+
+ case s_req_fragment_start:
+ if (IS_URL_CHAR(ch)) {
+ return s_req_fragment;
+ }
+
+ switch (ch) {
+ case '?':
+ return s_req_fragment;
+
+ case '#':
+ return s;
+ }
+
+ break;
+
+ case s_req_fragment:
+ if (IS_URL_CHAR(ch)) {
+ return s;
+ }
+
+ switch (ch) {
+ case '?':
+ case '#':
+ return s;
+ }
+
+ break;
+
+ default:
+ break;
+ }
+
+ /* We should never fall out of the switch above unless there's an error */
+ return s_dead;
+}
+
+size_t http_parser_execute (http_parser *parser,
+ const http_parser_settings *settings,
+ const char *data,
+ size_t len)
+{
+ char c, ch;
+ int8_t unhex_val;
+ const char *p = data;
+ const char *header_field_mark = 0;
+ const char *header_value_mark = 0;
+ const char *url_mark = 0;
+ const char *body_mark = 0;
+ const char *status_mark = 0;
+ enum state p_state = (enum state) parser->state;
+ const unsigned int lenient = parser->lenient_http_headers;
+
+ /* We're in an error state. Don't bother doing anything. */
+ if (HTTP_PARSER_ERRNO(parser) != HPE_OK) {
+ return 0;
+ }
+
+ if (len == 0) {
+ switch (CURRENT_STATE()) {
+ case s_body_identity_eof:
+ /* Use of CALLBACK_NOTIFY() here would erroneously return 1 byte read if
+ * we got paused.
+ */
+ CALLBACK_NOTIFY_NOADVANCE(message_complete);
+ return 0;
+
+ case s_dead:
+ case s_start_req_or_res:
+ case s_start_res:
+ case s_start_req:
+ return 0;
+
+ default:
+ SET_ERRNO(HPE_INVALID_EOF_STATE);
+ return 1;
+ }
+ }
+
+
+ if (CURRENT_STATE() == s_header_field)
+ header_field_mark = data;
+ if (CURRENT_STATE() == s_header_value)
+ header_value_mark = data;
+ switch (CURRENT_STATE()) {
+ case s_req_path:
+ case s_req_schema:
+ case s_req_schema_slash:
+ case s_req_schema_slash_slash:
+ case s_req_server_start:
+ case s_req_server:
+ case s_req_server_with_at:
+ case s_req_query_string_start:
+ case s_req_query_string:
+ case s_req_fragment_start:
+ case s_req_fragment:
+ url_mark = data;
+ break;
+ case s_res_status:
+ status_mark = data;
+ break;
+ default:
+ break;
+ }
+
+ for (p=data; p != data + len; p++) {
+ ch = *p;
+
+ if (PARSING_HEADER(CURRENT_STATE()))
+ COUNT_HEADER_SIZE(1);
+
+reexecute:
+ switch (CURRENT_STATE()) {
+
+ case s_dead:
+ /* this state is used after a 'Connection: close' message
+ * the parser will error out if it reads another message
+ */
+ if (LIKELY(ch == CR || ch == LF))
+ break;
+
+ SET_ERRNO(HPE_CLOSED_CONNECTION);
+ goto error;
+
+ case s_start_req_or_res:
+ {
+ if (ch == CR || ch == LF)
+ break;
+ parser->flags = 0;
+ parser->content_length = ULLONG_MAX;
+
+ if (ch == 'H') {
+ UPDATE_STATE(s_res_or_resp_H);
+
+ CALLBACK_NOTIFY(message_begin);
+ } else {
+ parser->type = HTTP_REQUEST;
+ UPDATE_STATE(s_start_req);
+ REEXECUTE();
+ }
+
+ break;
+ }
+
+ case s_res_or_resp_H:
+ if (ch == 'T') {
+ parser->type = HTTP_RESPONSE;
+ UPDATE_STATE(s_res_HT);
+ } else {
+ if (UNLIKELY(ch != 'E')) {
+ SET_ERRNO(HPE_INVALID_CONSTANT);
+ goto error;
+ }
+
+ parser->type = HTTP_REQUEST;
+ parser->method = HTTP_HEAD;
+ parser->index = 2;
+ UPDATE_STATE(s_req_method);
+ }
+ break;
+
+ case s_start_res:
+ {
+ parser->flags = 0;
+ parser->content_length = ULLONG_MAX;
+
+ switch (ch) {
+ case 'H':
+ UPDATE_STATE(s_res_H);
+ break;
+
+ case CR:
+ case LF:
+ break;
+
+ default:
+ SET_ERRNO(HPE_INVALID_CONSTANT);
+ goto error;
+ }
+
+ CALLBACK_NOTIFY(message_begin);
+ break;
+ }
+
+ case s_res_H:
+ STRICT_CHECK(ch != 'T');
+ UPDATE_STATE(s_res_HT);
+ break;
+
+ case s_res_HT:
+ STRICT_CHECK(ch != 'T');
+ UPDATE_STATE(s_res_HTT);
+ break;
+
+ case s_res_HTT:
+ STRICT_CHECK(ch != 'P');
+ UPDATE_STATE(s_res_HTTP);
+ break;
+
+ case s_res_HTTP:
+ STRICT_CHECK(ch != '/');
+ UPDATE_STATE(s_res_first_http_major);
+ break;
+
+ case s_res_first_http_major:
+ if (UNLIKELY(ch < '0' || ch > '9')) {
+ SET_ERRNO(HPE_INVALID_VERSION);
+ goto error;
+ }
+
+ parser->http_major = ch - '0';
+ UPDATE_STATE(s_res_http_major);
+ break;
+
+ /* major HTTP version or dot */
+ case s_res_http_major:
+ {
+ if (ch == '.') {
+ UPDATE_STATE(s_res_first_http_minor);
+ break;
+ }
+
+ if (!IS_NUM(ch)) {
+ SET_ERRNO(HPE_INVALID_VERSION);
+ goto error;
+ }
+
+ parser->http_major *= 10;
+ parser->http_major += ch - '0';
+
+ if (UNLIKELY(parser->http_major > 999)) {
+ SET_ERRNO(HPE_INVALID_VERSION);
+ goto error;
+ }
+
+ break;
+ }
+
+ /* first digit of minor HTTP version */
+ case s_res_first_http_minor:
+ if (UNLIKELY(!IS_NUM(ch))) {
+ SET_ERRNO(HPE_INVALID_VERSION);
+ goto error;
+ }
+
+ parser->http_minor = ch - '0';
+ UPDATE_STATE(s_res_http_minor);
+ break;
+
+ /* minor HTTP version or end of request line */
+ case s_res_http_minor:
+ {
+ if (ch == ' ') {
+ UPDATE_STATE(s_res_first_status_code);
+ break;
+ }
+
+ if (UNLIKELY(!IS_NUM(ch))) {
+ SET_ERRNO(HPE_INVALID_VERSION);
+ goto error;
+ }
+
+ parser->http_minor *= 10;
+ parser->http_minor += ch - '0';
+
+ if (UNLIKELY(parser->http_minor > 999)) {
+ SET_ERRNO(HPE_INVALID_VERSION);
+ goto error;
+ }
+
+ break;
+ }
+
+ case s_res_first_status_code:
+ {
+ if (!IS_NUM(ch)) {
+ if (ch == ' ') {
+ break;
+ }
+
+ SET_ERRNO(HPE_INVALID_STATUS);
+ goto error;
+ }
+ parser->status_code = ch - '0';
+ UPDATE_STATE(s_res_status_code);
+ break;
+ }
+
+ case s_res_status_code:
+ {
+ if (!IS_NUM(ch)) {
+ switch (ch) {
+ case ' ':
+ UPDATE_STATE(s_res_status_start);
+ break;
+ case CR:
+ UPDATE_STATE(s_res_line_almost_done);
+ break;
+ case LF:
+ UPDATE_STATE(s_header_field_start);
+ break;
+ default:
+ SET_ERRNO(HPE_INVALID_STATUS);
+ goto error;
+ }
+ break;
+ }
+
+ parser->status_code *= 10;
+ parser->status_code += ch - '0';
+
+ if (UNLIKELY(parser->status_code > 999)) {
+ SET_ERRNO(HPE_INVALID_STATUS);
+ goto error;
+ }
+
+ break;
+ }
+
+ case s_res_status_start:
+ {
+ if (ch == CR) {
+ UPDATE_STATE(s_res_line_almost_done);
+ break;
+ }
+
+ if (ch == LF) {
+ UPDATE_STATE(s_header_field_start);
+ break;
+ }
+
+ MARK(status);
+ UPDATE_STATE(s_res_status);
+ parser->index = 0;
+ break;
+ }
+
+ case s_res_status:
+ if (ch == CR) {
+ UPDATE_STATE(s_res_line_almost_done);
+ CALLBACK_DATA(status);
+ break;
+ }
+
+ if (ch == LF) {
+ UPDATE_STATE(s_header_field_start);
+ CALLBACK_DATA(status);
+ break;
+ }
+
+ break;
+
+ case s_res_line_almost_done:
+ STRICT_CHECK(ch != LF);
+ UPDATE_STATE(s_header_field_start);
+ break;
+
+ case s_start_req:
+ {
+ if (ch == CR || ch == LF)
+ break;
+ parser->flags = 0;
+ parser->content_length = ULLONG_MAX;
+
+ if (UNLIKELY(!IS_ALPHA(ch))) {
+ SET_ERRNO(HPE_INVALID_METHOD);
+ goto error;
+ }
+
+ parser->method = (enum http_method) 0;
+ parser->index = 1;
+ switch (ch) {
+ case 'A': parser->method = HTTP_ACL; break;
+ case 'B': parser->method = HTTP_BIND; break;
+ case 'C': parser->method = HTTP_CONNECT; /* or COPY, CHECKOUT */ break;
+ case 'D': parser->method = HTTP_DELETE; break;
+ case 'G': parser->method = HTTP_GET; break;
+ case 'H': parser->method = HTTP_HEAD; break;
+ case 'L': parser->method = HTTP_LOCK; /* or LINK */ break;
+ case 'M': parser->method = HTTP_MKCOL; /* or MOVE, MKACTIVITY, MERGE, M-SEARCH, MKCALENDAR */ break;
+ case 'N': parser->method = HTTP_NOTIFY; break;
+ case 'O': parser->method = HTTP_OPTIONS; break;
+ case 'P': parser->method = HTTP_POST;
+ /* or PROPFIND|PROPPATCH|PUT|PATCH|PURGE */
+ break;
+ case 'R': parser->method = HTTP_REPORT; /* or REBIND */ break;
+ case 'S': parser->method = HTTP_SUBSCRIBE; /* or SEARCH */ break;
+ case 'T': parser->method = HTTP_TRACE; break;
+ case 'U': parser->method = HTTP_UNLOCK; /* or UNSUBSCRIBE, UNBIND, UNLINK */ break;
+ default:
+ SET_ERRNO(HPE_INVALID_METHOD);
+ goto error;
+ }
+ UPDATE_STATE(s_req_method);
+
+ CALLBACK_NOTIFY(message_begin);
+
+ break;
+ }
+
+ case s_req_method:
+ {
+ const char *matcher;
+ if (UNLIKELY(ch == '\0')) {
+ SET_ERRNO(HPE_INVALID_METHOD);
+ goto error;
+ }
+
+ matcher = method_strings[parser->method];
+ if (ch == ' ' && matcher[parser->index] == '\0') {
+ UPDATE_STATE(s_req_spaces_before_url);
+ } else if (ch == matcher[parser->index]) {
+ ; /* nada */
+ } else if (IS_ALPHA(ch)) {
+
+ switch (parser->method << 16 | parser->index << 8 | ch) {
+#define XX(meth, pos, ch, new_meth) \
+ case (HTTP_##meth << 16 | pos << 8 | ch): \
+ parser->method = HTTP_##new_meth; break;
+
+ XX(POST, 1, 'U', PUT)
+ XX(POST, 1, 'A', PATCH)
+ XX(CONNECT, 1, 'H', CHECKOUT)
+ XX(CONNECT, 2, 'P', COPY)
+ XX(MKCOL, 1, 'O', MOVE)
+ XX(MKCOL, 1, 'E', MERGE)
+ XX(MKCOL, 2, 'A', MKACTIVITY)
+ XX(MKCOL, 3, 'A', MKCALENDAR)
+ XX(SUBSCRIBE, 1, 'E', SEARCH)
+ XX(REPORT, 2, 'B', REBIND)
+ XX(POST, 1, 'R', PROPFIND)
+ XX(PROPFIND, 4, 'P', PROPPATCH)
+ XX(PUT, 2, 'R', PURGE)
+ XX(LOCK, 1, 'I', LINK)
+ XX(UNLOCK, 2, 'S', UNSUBSCRIBE)
+ XX(UNLOCK, 2, 'B', UNBIND)
+ XX(UNLOCK, 3, 'I', UNLINK)
+#undef XX
+
+ default:
+ SET_ERRNO(HPE_INVALID_METHOD);
+ goto error;
+ }
+ } else if (ch == '-' &&
+ parser->index == 1 &&
+ parser->method == HTTP_MKCOL) {
+ parser->method = HTTP_MSEARCH;
+ } else {
+ SET_ERRNO(HPE_INVALID_METHOD);
+ goto error;
+ }
+
+ ++parser->index;
+ break;
+ }
+
+ case s_req_spaces_before_url:
+ {
+ if (ch == ' ') break;
+
+ MARK(url);
+ if (parser->method == HTTP_CONNECT) {
+ UPDATE_STATE(s_req_server_start);
+ }
+
+ UPDATE_STATE(parse_url_char(CURRENT_STATE(), ch));
+ if (UNLIKELY(CURRENT_STATE() == s_dead)) {
+ SET_ERRNO(HPE_INVALID_URL);
+ goto error;
+ }
+
+ break;
+ }
+
+ case s_req_schema:
+ case s_req_schema_slash:
+ case s_req_schema_slash_slash:
+ case s_req_server_start:
+ {
+ switch (ch) {
+ /* No whitespace allowed here */
+ case ' ':
+ case CR:
+ case LF:
+ SET_ERRNO(HPE_INVALID_URL);
+ goto error;
+ default:
+ UPDATE_STATE(parse_url_char(CURRENT_STATE(), ch));
+ if (UNLIKELY(CURRENT_STATE() == s_dead)) {
+ SET_ERRNO(HPE_INVALID_URL);
+ goto error;
+ }
+ }
+
+ break;
+ }
+
+ case s_req_server:
+ case s_req_server_with_at:
+ case s_req_path:
+ case s_req_query_string_start:
+ case s_req_query_string:
+ case s_req_fragment_start:
+ case s_req_fragment:
+ {
+ switch (ch) {
+ case ' ':
+ UPDATE_STATE(s_req_http_start);
+ CALLBACK_DATA(url);
+ break;
+ case CR:
+ case LF:
+ parser->http_major = 0;
+ parser->http_minor = 9;
+ UPDATE_STATE((ch == CR) ?
+ s_req_line_almost_done :
+ s_header_field_start);
+ CALLBACK_DATA(url);
+ break;
+ default:
+ UPDATE_STATE(parse_url_char(CURRENT_STATE(), ch));
+ if (UNLIKELY(CURRENT_STATE() == s_dead)) {
+ SET_ERRNO(HPE_INVALID_URL);
+ goto error;
+ }
+ }
+ break;
+ }
+
+ case s_req_http_start:
+ switch (ch) {
+ case 'H':
+ UPDATE_STATE(s_req_http_H);
+ break;
+ case ' ':
+ break;
+ default:
+ SET_ERRNO(HPE_INVALID_CONSTANT);
+ goto error;
+ }
+ break;
+
+ case s_req_http_H:
+ STRICT_CHECK(ch != 'T');
+ UPDATE_STATE(s_req_http_HT);
+ break;
+
+ case s_req_http_HT:
+ STRICT_CHECK(ch != 'T');
+ UPDATE_STATE(s_req_http_HTT);
+ break;
+
+ case s_req_http_HTT:
+ STRICT_CHECK(ch != 'P');
+ UPDATE_STATE(s_req_http_HTTP);
+ break;
+
+ case s_req_http_HTTP:
+ STRICT_CHECK(ch != '/');
+ UPDATE_STATE(s_req_first_http_major);
+ break;
+
+ /* first digit of major HTTP version */
+ case s_req_first_http_major:
+ if (UNLIKELY(ch < '1' || ch > '9')) {
+ SET_ERRNO(HPE_INVALID_VERSION);
+ goto error;
+ }
+
+ parser->http_major = ch - '0';
+ UPDATE_STATE(s_req_http_major);
+ break;
+
+ /* major HTTP version or dot */
+ case s_req_http_major:
+ {
+ if (ch == '.') {
+ UPDATE_STATE(s_req_first_http_minor);
+ break;
+ }
+
+ if (UNLIKELY(!IS_NUM(ch))) {
+ SET_ERRNO(HPE_INVALID_VERSION);
+ goto error;
+ }
+
+ parser->http_major *= 10;
+ parser->http_major += ch - '0';
+
+ if (UNLIKELY(parser->http_major > 999)) {
+ SET_ERRNO(HPE_INVALID_VERSION);
+ goto error;
+ }
+
+ break;
+ }
+
+ /* first digit of minor HTTP version */
+ case s_req_first_http_minor:
+ if (UNLIKELY(!IS_NUM(ch))) {
+ SET_ERRNO(HPE_INVALID_VERSION);
+ goto error;
+ }
+
+ parser->http_minor = ch - '0';
+ UPDATE_STATE(s_req_http_minor);
+ break;
+
+ /* minor HTTP version or end of request line */
+ case s_req_http_minor:
+ {
+ if (ch == CR) {
+ UPDATE_STATE(s_req_line_almost_done);
+ break;
+ }
+
+ if (ch == LF) {
+ UPDATE_STATE(s_header_field_start);
+ break;
+ }
+
+ /* XXX allow spaces after digit? */
+
+ if (UNLIKELY(!IS_NUM(ch))) {
+ SET_ERRNO(HPE_INVALID_VERSION);
+ goto error;
+ }
+
+ parser->http_minor *= 10;
+ parser->http_minor += ch - '0';
+
+ if (UNLIKELY(parser->http_minor > 999)) {
+ SET_ERRNO(HPE_INVALID_VERSION);
+ goto error;
+ }
+
+ break;
+ }
+
+ /* end of request line */
+ case s_req_line_almost_done:
+ {
+ if (UNLIKELY(ch != LF)) {
+ SET_ERRNO(HPE_LF_EXPECTED);
+ goto error;
+ }
+
+ UPDATE_STATE(s_header_field_start);
+ break;
+ }
+
+ case s_header_field_start:
+ {
+ if (ch == CR) {
+ UPDATE_STATE(s_headers_almost_done);
+ break;
+ }
+
+ if (ch == LF) {
+ /* they might be just sending \n instead of \r\n so this would be
+ * the second \n to denote the end of headers*/
+ UPDATE_STATE(s_headers_almost_done);
+ REEXECUTE();
+ }
+
+ c = TOKEN(ch);
+
+ if (UNLIKELY(!c)) {
+ SET_ERRNO(HPE_INVALID_HEADER_TOKEN);
+ goto error;
+ }
+
+ MARK(header_field);
+
+ parser->index = 0;
+ UPDATE_STATE(s_header_field);
+
+ switch (c) {
+ case 'c':
+ parser->header_state = h_C;
+ break;
+
+ case 'p':
+ parser->header_state = h_matching_proxy_connection;
+ break;
+
+ case 't':
+ parser->header_state = h_matching_transfer_encoding;
+ break;
+
+ case 'u':
+ parser->header_state = h_matching_upgrade;
+ break;
+
+ default:
+ parser->header_state = h_general;
+ break;
+ }
+ break;
+ }
+
+ case s_header_field:
+ {
+ const char* start = p;
+ for (; p != data + len; p++) {
+ ch = *p;
+ c = TOKEN(ch);
+
+ if (!c)
+ break;
+
+ switch (parser->header_state) {
+ case h_general:
+ break;
+
+ case h_C:
+ parser->index++;
+ parser->header_state = (c == 'o' ? h_CO : h_general);
+ break;
+
+ case h_CO:
+ parser->index++;
+ parser->header_state = (c == 'n' ? h_CON : h_general);
+ break;
+
+ case h_CON:
+ parser->index++;
+ switch (c) {
+ case 'n':
+ parser->header_state = h_matching_connection;
+ break;
+ case 't':
+ parser->header_state = h_matching_content_length;
+ break;
+ default:
+ parser->header_state = h_general;
+ break;
+ }
+ break;
+
+ /* connection */
+
+ case h_matching_connection:
+ parser->index++;
+ if (parser->index > sizeof(CONNECTION)-1
+ || c != CONNECTION[parser->index]) {
+ parser->header_state = h_general;
+ } else if (parser->index == sizeof(CONNECTION)-2) {
+ parser->header_state = h_connection;
+ }
+ break;
+
+ /* proxy-connection */
+
+ case h_matching_proxy_connection:
+ parser->index++;
+ if (parser->index > sizeof(PROXY_CONNECTION)-1
+ || c != PROXY_CONNECTION[parser->index]) {
+ parser->header_state = h_general;
+ } else if (parser->index == sizeof(PROXY_CONNECTION)-2) {
+ parser->header_state = h_connection;
+ }
+ break;
+
+ /* content-length */
+
+ case h_matching_content_length:
+ parser->index++;
+ if (parser->index > sizeof(CONTENT_LENGTH)-1
+ || c != CONTENT_LENGTH[parser->index]) {
+ parser->header_state = h_general;
+ } else if (parser->index == sizeof(CONTENT_LENGTH)-2) {
+ if (parser->flags & F_CONTENTLENGTH) {
+ SET_ERRNO(HPE_UNEXPECTED_CONTENT_LENGTH);
+ goto error;
+ }
+ parser->header_state = h_content_length;
+ parser->flags |= F_CONTENTLENGTH;
+ }
+ break;
+
+ /* transfer-encoding */
+
+ case h_matching_transfer_encoding:
+ parser->index++;
+ if (parser->index > sizeof(TRANSFER_ENCODING)-1
+ || c != TRANSFER_ENCODING[parser->index]) {
+ parser->header_state = h_general;
+ } else if (parser->index == sizeof(TRANSFER_ENCODING)-2) {
+ parser->header_state = h_transfer_encoding;
+ }
+ break;
+
+ /* upgrade */
+
+ case h_matching_upgrade:
+ parser->index++;
+ if (parser->index > sizeof(UPGRADE)-1
+ || c != UPGRADE[parser->index]) {
+ parser->header_state = h_general;
+ } else if (parser->index == sizeof(UPGRADE)-2) {
+ parser->header_state = h_upgrade;
+ }
+ break;
+
+ case h_connection:
+ case h_content_length:
+ case h_transfer_encoding:
+ case h_upgrade:
+ if (ch != ' ') parser->header_state = h_general;
+ break;
+
+ default:
+ assert(0 && "Unknown header_state");
+ break;
+ }
+ }
+
+ COUNT_HEADER_SIZE(p - start);
+
+ if (p == data + len) {
+ --p;
+ break;
+ }
+
+ if (ch == ':') {
+ UPDATE_STATE(s_header_value_discard_ws);
+ CALLBACK_DATA(header_field);
+ break;
+ }
+
+ SET_ERRNO(HPE_INVALID_HEADER_TOKEN);
+ goto error;
+ }
+
+ case s_header_value_discard_ws:
+ if (ch == ' ' || ch == '\t') break;
+
+ if (ch == CR) {
+ UPDATE_STATE(s_header_value_discard_ws_almost_done);
+ break;
+ }
+
+ if (ch == LF) {
+ UPDATE_STATE(s_header_value_discard_lws);
+ break;
+ }
+
+ /* FALLTHROUGH */
+
+ case s_header_value_start:
+ {
+ MARK(header_value);
+
+ UPDATE_STATE(s_header_value);
+ parser->index = 0;
+
+ c = LOWER(ch);
+
+ switch (parser->header_state) {
+ case h_upgrade:
+ parser->flags |= F_UPGRADE;
+ parser->header_state = h_general;
+ break;
+
+ case h_transfer_encoding:
+ /* looking for 'Transfer-Encoding: chunked' */
+ if ('c' == c) {
+ parser->header_state = h_matching_transfer_encoding_chunked;
+ } else {
+ parser->header_state = h_general;
+ }
+ break;
+
+ case h_content_length:
+ if (UNLIKELY(!IS_NUM(ch))) {
+ SET_ERRNO(HPE_INVALID_CONTENT_LENGTH);
+ goto error;
+ }
+
+ parser->content_length = ch - '0';
+ break;
+
+ case h_connection:
+ /* looking for 'Connection: keep-alive' */
+ if (c == 'k') {
+ parser->header_state = h_matching_connection_keep_alive;
+ /* looking for 'Connection: close' */
+ } else if (c == 'c') {
+ parser->header_state = h_matching_connection_close;
+ } else if (c == 'u') {
+ parser->header_state = h_matching_connection_upgrade;
+ } else {
+ parser->header_state = h_matching_connection_token;
+ }
+ break;
+
+ /* Multi-value `Connection` header */
+ case h_matching_connection_token_start:
+ break;
+
+ default:
+ parser->header_state = h_general;
+ break;
+ }
+ break;
+ }
+
+ case s_header_value:
+ {
+ const char* start = p;
+ enum header_states h_state = (enum header_states) parser->header_state;
+ for (; p != data + len; p++) {
+ ch = *p;
+ if (ch == CR) {
+ UPDATE_STATE(s_header_almost_done);
+ parser->header_state = h_state;
+ CALLBACK_DATA(header_value);
+ break;
+ }
+
+ if (ch == LF) {
+ UPDATE_STATE(s_header_almost_done);
+ COUNT_HEADER_SIZE(p - start);
+ parser->header_state = h_state;
+ CALLBACK_DATA_NOADVANCE(header_value);
+ REEXECUTE();
+ }
+
+ if (!lenient && !IS_HEADER_CHAR(ch)) {
+ SET_ERRNO(HPE_INVALID_HEADER_TOKEN);
+ goto error;
+ }
+
+ c = LOWER(ch);
+
+ switch (h_state) {
+ case h_general:
+ {
+ const char* p_cr;
+ const char* p_lf;
+ size_t limit = data + len - p;
+
+ limit = MIN(limit, HTTP_MAX_HEADER_SIZE);
+
+ p_cr = (const char*) memchr(p, CR, limit);
+ p_lf = (const char*) memchr(p, LF, limit);
+ if (p_cr != NULL) {
+ if (p_lf != NULL && p_cr >= p_lf)
+ p = p_lf;
+ else
+ p = p_cr;
+ } else if (UNLIKELY(p_lf != NULL)) {
+ p = p_lf;
+ } else {
+ p = data + len;
+ }
+ --p;
+
+ break;
+ }
+
+ case h_connection:
+ case h_transfer_encoding:
+ assert(0 && "Shouldn't get here.");
+ break;
+
+ case h_content_length:
+ {
+ uint64_t t;
+
+ if (ch == ' ') break;
+
+ if (UNLIKELY(!IS_NUM(ch))) {
+ SET_ERRNO(HPE_INVALID_CONTENT_LENGTH);
+ parser->header_state = h_state;
+ goto error;
+ }
+
+ t = parser->content_length;
+ t *= 10;
+ t += ch - '0';
+
+ /* Overflow? Test against a conservative limit for simplicity. */
+ if (UNLIKELY((ULLONG_MAX - 10) / 10 < parser->content_length)) {
+ SET_ERRNO(HPE_INVALID_CONTENT_LENGTH);
+ parser->header_state = h_state;
+ goto error;
+ }
+
+ parser->content_length = t;
+ break;
+ }
+
+ /* Transfer-Encoding: chunked */
+ case h_matching_transfer_encoding_chunked:
+ parser->index++;
+ if (parser->index > sizeof(CHUNKED)-1
+ || c != CHUNKED[parser->index]) {
+ h_state = h_general;
+ } else if (parser->index == sizeof(CHUNKED)-2) {
+ h_state = h_transfer_encoding_chunked;
+ }
+ break;
+
+ case h_matching_connection_token_start:
+ /* looking for 'Connection: keep-alive' */
+ if (c == 'k') {
+ h_state = h_matching_connection_keep_alive;
+ /* looking for 'Connection: close' */
+ } else if (c == 'c') {
+ h_state = h_matching_connection_close;
+ } else if (c == 'u') {
+ h_state = h_matching_connection_upgrade;
+ } else if (STRICT_TOKEN(c)) {
+ h_state = h_matching_connection_token;
+ } else if (c == ' ' || c == '\t') {
+ /* Skip lws */
+ } else {
+ h_state = h_general;
+ }
+ break;
+
+ /* looking for 'Connection: keep-alive' */
+ case h_matching_connection_keep_alive:
+ parser->index++;
+ if (parser->index > sizeof(KEEP_ALIVE)-1
+ || c != KEEP_ALIVE[parser->index]) {
+ h_state = h_matching_connection_token;
+ } else if (parser->index == sizeof(KEEP_ALIVE)-2) {
+ h_state = h_connection_keep_alive;
+ }
+ break;
+
+ /* looking for 'Connection: close' */
+ case h_matching_connection_close:
+ parser->index++;
+ if (parser->index > sizeof(CLOSE)-1 || c != CLOSE[parser->index]) {
+ h_state = h_matching_connection_token;
+ } else if (parser->index == sizeof(CLOSE)-2) {
+ h_state = h_connection_close;
+ }
+ break;
+
+ /* looking for 'Connection: upgrade' */
+ case h_matching_connection_upgrade:
+ parser->index++;
+ if (parser->index > sizeof(UPGRADE) - 1 ||
+ c != UPGRADE[parser->index]) {
+ h_state = h_matching_connection_token;
+ } else if (parser->index == sizeof(UPGRADE)-2) {
+ h_state = h_connection_upgrade;
+ }
+ break;
+
+ case h_matching_connection_token:
+ if (ch == ',') {
+ h_state = h_matching_connection_token_start;
+ parser->index = 0;
+ }
+ break;
+
+ case h_transfer_encoding_chunked:
+ if (ch != ' ') h_state = h_general;
+ break;
+
+ case h_connection_keep_alive:
+ case h_connection_close:
+ case h_connection_upgrade:
+ if (ch == ',') {
+ if (h_state == h_connection_keep_alive) {
+ parser->flags |= F_CONNECTION_KEEP_ALIVE;
+ } else if (h_state == h_connection_close) {
+ parser->flags |= F_CONNECTION_CLOSE;
+ } else if (h_state == h_connection_upgrade) {
+ parser->flags |= F_CONNECTION_UPGRADE;
+ }
+ h_state = h_matching_connection_token_start;
+ parser->index = 0;
+ } else if (ch != ' ') {
+ h_state = h_matching_connection_token;
+ }
+ break;
+
+ default:
+ UPDATE_STATE(s_header_value);
+ h_state = h_general;
+ break;
+ }
+ }
+ parser->header_state = h_state;
+
+ COUNT_HEADER_SIZE(p - start);
+
+ if (p == data + len)
+ --p;
+ break;
+ }
+
+ case s_header_almost_done:
+ {
+ if (UNLIKELY(ch != LF)) {
+ SET_ERRNO(HPE_LF_EXPECTED);
+ goto error;
+ }
+
+ UPDATE_STATE(s_header_value_lws);
+ break;
+ }
+
+ case s_header_value_lws:
+ {
+ if (ch == ' ' || ch == '\t') {
+ UPDATE_STATE(s_header_value_start);
+ REEXECUTE();
+ }
+
+ /* finished the header */
+ switch (parser->header_state) {
+ case h_connection_keep_alive:
+ parser->flags |= F_CONNECTION_KEEP_ALIVE;
+ break;
+ case h_connection_close:
+ parser->flags |= F_CONNECTION_CLOSE;
+ break;
+ case h_transfer_encoding_chunked:
+ parser->flags |= F_CHUNKED;
+ break;
+ case h_connection_upgrade:
+ parser->flags |= F_CONNECTION_UPGRADE;
+ break;
+ default:
+ break;
+ }
+
+ UPDATE_STATE(s_header_field_start);
+ REEXECUTE();
+ }
+
+ case s_header_value_discard_ws_almost_done:
+ {
+ STRICT_CHECK(ch != LF);
+ UPDATE_STATE(s_header_value_discard_lws);
+ break;
+ }
+
+ case s_header_value_discard_lws:
+ {
+ if (ch == ' ' || ch == '\t') {
+ UPDATE_STATE(s_header_value_discard_ws);
+ break;
+ } else {
+ switch (parser->header_state) {
+ case h_connection_keep_alive:
+ parser->flags |= F_CONNECTION_KEEP_ALIVE;
+ break;
+ case h_connection_close:
+ parser->flags |= F_CONNECTION_CLOSE;
+ break;
+ case h_connection_upgrade:
+ parser->flags |= F_CONNECTION_UPGRADE;
+ break;
+ case h_transfer_encoding_chunked:
+ parser->flags |= F_CHUNKED;
+ break;
+ default:
+ break;
+ }
+
+ /* header value was empty */
+ MARK(header_value);
+ UPDATE_STATE(s_header_field_start);
+ CALLBACK_DATA_NOADVANCE(header_value);
+ REEXECUTE();
+ }
+ }
+
+ case s_headers_almost_done:
+ {
+ STRICT_CHECK(ch != LF);
+
+ if (parser->flags & F_TRAILING) {
+ /* End of a chunked request */
+ UPDATE_STATE(s_message_done);
+ CALLBACK_NOTIFY_NOADVANCE(chunk_complete);
+ REEXECUTE();
+ }
+
+ /* Cannot use chunked encoding and a content-length header together
+ per the HTTP specification. */
+ if ((parser->flags & F_CHUNKED) &&
+ (parser->flags & F_CONTENTLENGTH)) {
+ SET_ERRNO(HPE_UNEXPECTED_CONTENT_LENGTH);
+ goto error;
+ }
+
+ UPDATE_STATE(s_headers_done);
+
+ /* Set this here so that on_headers_complete() callbacks can see it */
+ parser->upgrade =
+ ((parser->flags & (F_UPGRADE | F_CONNECTION_UPGRADE)) ==
+ (F_UPGRADE | F_CONNECTION_UPGRADE) ||
+ parser->method == HTTP_CONNECT);
+
+ /* Here we call the headers_complete callback. This is somewhat
+ * different than other callbacks because if the user returns 1, we
+ * will interpret that as saying that this message has no body. This
+ * is needed for the annoying case of recieving a response to a HEAD
+ * request.
+ *
+ * We'd like to use CALLBACK_NOTIFY_NOADVANCE() here but we cannot, so
+ * we have to simulate it by handling a change in errno below.
+ */
+ if (settings->on_headers_complete) {
+ switch (settings->on_headers_complete(parser)) {
+ case 0:
+ break;
+
+ case 2:
+ parser->upgrade = 1;
+
+ case 1:
+ parser->flags |= F_SKIPBODY;
+ break;
+
+ default:
+ SET_ERRNO(HPE_CB_headers_complete);
+ RETURN(p - data); /* Error */
+ }
+ }
+
+ if (HTTP_PARSER_ERRNO(parser) != HPE_OK) {
+ RETURN(p - data);
+ }
+
+ REEXECUTE();
+ }
+
+ case s_headers_done:
+ {
+ int hasBody;
+ STRICT_CHECK(ch != LF);
+
+ parser->nread = 0;
+
+ hasBody = parser->flags & F_CHUNKED ||
+ (parser->content_length > 0 && parser->content_length != ULLONG_MAX);
+ if (parser->upgrade && (parser->method == HTTP_CONNECT ||
+ (parser->flags & F_SKIPBODY) || !hasBody)) {
+ /* Exit, the rest of the message is in a different protocol. */
+ UPDATE_STATE(NEW_MESSAGE());
+ CALLBACK_NOTIFY(message_complete);
+ RETURN((p - data) + 1);
+ }
+
+ if (parser->flags & F_SKIPBODY) {
+ UPDATE_STATE(NEW_MESSAGE());
+ CALLBACK_NOTIFY(message_complete);
+ } else if (parser->flags & F_CHUNKED) {
+ /* chunked encoding - ignore Content-Length header */
+ UPDATE_STATE(s_chunk_size_start);
+ } else {
+ if (parser->content_length == 0) {
+ /* Content-Length header given but zero: Content-Length: 0\r\n */
+ UPDATE_STATE(NEW_MESSAGE());
+ CALLBACK_NOTIFY(message_complete);
+ } else if (parser->content_length != ULLONG_MAX) {
+ /* Content-Length header given and non-zero */
+ UPDATE_STATE(s_body_identity);
+ } else {
+ if (!http_message_needs_eof(parser)) {
+ /* Assume content-length 0 - read the next */
+ UPDATE_STATE(NEW_MESSAGE());
+ CALLBACK_NOTIFY(message_complete);
+ } else {
+ /* Read body until EOF */
+ UPDATE_STATE(s_body_identity_eof);
+ }
+ }
+ }
+
+ break;
+ }
+
+ case s_body_identity:
+ {
+ uint64_t to_read = MIN(parser->content_length,
+ (uint64_t) ((data + len) - p));
+
+ assert(parser->content_length != 0
+ && parser->content_length != ULLONG_MAX);
+
+ /* The difference between advancing content_length and p is because
+ * the latter will automaticaly advance on the next loop iteration.
+ * Further, if content_length ends up at 0, we want to see the last
+ * byte again for our message complete callback.
+ */
+ MARK(body);
+ parser->content_length -= to_read;
+ p += to_read - 1;
+
+ if (parser->content_length == 0) {
+ UPDATE_STATE(s_message_done);
+
+ /* Mimic CALLBACK_DATA_NOADVANCE() but with one extra byte.
+ *
+ * The alternative to doing this is to wait for the next byte to
+ * trigger the data callback, just as in every other case. The
+ * problem with this is that this makes it difficult for the test
+ * harness to distinguish between complete-on-EOF and
+ * complete-on-length. It's not clear that this distinction is
+ * important for applications, but let's keep it for now.
+ */
+ CALLBACK_DATA_(body, p - body_mark + 1, p - data);
+ REEXECUTE();
+ }
+
+ break;
+ }
+
+ /* read until EOF */
+ case s_body_identity_eof:
+ MARK(body);
+ p = data + len - 1;
+
+ break;
+
+ case s_message_done:
+ UPDATE_STATE(NEW_MESSAGE());
+ CALLBACK_NOTIFY(message_complete);
+ if (parser->upgrade) {
+ /* Exit, the rest of the message is in a different protocol. */
+ RETURN((p - data) + 1);
+ }
+ break;
+
+ case s_chunk_size_start:
+ {
+ assert(parser->nread == 1);
+ assert(parser->flags & F_CHUNKED);
+
+ unhex_val = unhex[(unsigned char)ch];
+ if (UNLIKELY(unhex_val == -1)) {
+ SET_ERRNO(HPE_INVALID_CHUNK_SIZE);
+ goto error;
+ }
+
+ parser->content_length = unhex_val;
+ UPDATE_STATE(s_chunk_size);
+ break;
+ }
+
+ case s_chunk_size:
+ {
+ uint64_t t;
+
+ assert(parser->flags & F_CHUNKED);
+
+ if (ch == CR) {
+ UPDATE_STATE(s_chunk_size_almost_done);
+ break;
+ }
+
+ unhex_val = unhex[(unsigned char)ch];
+
+ if (unhex_val == -1) {
+ if (ch == ';' || ch == ' ') {
+ UPDATE_STATE(s_chunk_parameters);
+ break;
+ }
+
+ SET_ERRNO(HPE_INVALID_CHUNK_SIZE);
+ goto error;
+ }
+
+ t = parser->content_length;
+ t *= 16;
+ t += unhex_val;
+
+ /* Overflow? Test against a conservative limit for simplicity. */
+ if (UNLIKELY((ULLONG_MAX - 16) / 16 < parser->content_length)) {
+ SET_ERRNO(HPE_INVALID_CONTENT_LENGTH);
+ goto error;
+ }
+
+ parser->content_length = t;
+ break;
+ }
+
+ case s_chunk_parameters:
+ {
+ assert(parser->flags & F_CHUNKED);
+ /* just ignore this shit. TODO check for overflow */
+ if (ch == CR) {
+ UPDATE_STATE(s_chunk_size_almost_done);
+ break;
+ }
+ break;
+ }
+
+ case s_chunk_size_almost_done:
+ {
+ assert(parser->flags & F_CHUNKED);
+ STRICT_CHECK(ch != LF);
+
+ parser->nread = 0;
+
+ if (parser->content_length == 0) {
+ parser->flags |= F_TRAILING;
+ UPDATE_STATE(s_header_field_start);
+ } else {
+ UPDATE_STATE(s_chunk_data);
+ }
+ CALLBACK_NOTIFY(chunk_header);
+ break;
+ }
+
+ case s_chunk_data:
+ {
+ uint64_t to_read = MIN(parser->content_length,
+ (uint64_t) ((data + len) - p));
+
+ assert(parser->flags & F_CHUNKED);
+ assert(parser->content_length != 0
+ && parser->content_length != ULLONG_MAX);
+
+ /* See the explanation in s_body_identity for why the content
+ * length and data pointers are managed this way.
+ */
+ MARK(body);
+ parser->content_length -= to_read;
+ p += to_read - 1;
+
+ if (parser->content_length == 0) {
+ UPDATE_STATE(s_chunk_data_almost_done);
+ }
+
+ break;
+ }
+
+ case s_chunk_data_almost_done:
+ assert(parser->flags & F_CHUNKED);
+ assert(parser->content_length == 0);
+ STRICT_CHECK(ch != CR);
+ UPDATE_STATE(s_chunk_data_done);
+ CALLBACK_DATA(body);
+ break;
+
+ case s_chunk_data_done:
+ assert(parser->flags & F_CHUNKED);
+ STRICT_CHECK(ch != LF);
+ parser->nread = 0;
+ UPDATE_STATE(s_chunk_size_start);
+ CALLBACK_NOTIFY(chunk_complete);
+ break;
+
+ default:
+ assert(0 && "unhandled state");
+ SET_ERRNO(HPE_INVALID_INTERNAL_STATE);
+ goto error;
+ }
+ }
+
+ /* Run callbacks for any marks that we have leftover after we ran our of
+ * bytes. There should be at most one of these set, so it's OK to invoke
+ * them in series (unset marks will not result in callbacks).
+ *
+ * We use the NOADVANCE() variety of callbacks here because 'p' has already
+ * overflowed 'data' and this allows us to correct for the off-by-one that
+ * we'd otherwise have (since CALLBACK_DATA() is meant to be run with a 'p'
+ * value that's in-bounds).
+ */
+
+ assert(((header_field_mark ? 1 : 0) +
+ (header_value_mark ? 1 : 0) +
+ (url_mark ? 1 : 0) +
+ (body_mark ? 1 : 0) +
+ (status_mark ? 1 : 0)) <= 1);
+
+ CALLBACK_DATA_NOADVANCE(header_field);
+ CALLBACK_DATA_NOADVANCE(header_value);
+ CALLBACK_DATA_NOADVANCE(url);
+ CALLBACK_DATA_NOADVANCE(body);
+ CALLBACK_DATA_NOADVANCE(status);
+
+ RETURN(len);
+
+error:
+ if (HTTP_PARSER_ERRNO(parser) == HPE_OK) {
+ SET_ERRNO(HPE_UNKNOWN);
+ }
+
+ RETURN(p - data);
+}
+
+
+/* Does the parser need to see an EOF to find the end of the message? */
+int
+http_message_needs_eof (const http_parser *parser)
+{
+ if (parser->type == HTTP_REQUEST) {
+ return 0;
+ }
+
+ /* See RFC 2616 section 4.4 */
+ if (parser->status_code / 100 == 1 || /* 1xx e.g. Continue */
+ parser->status_code == 204 || /* No Content */
+ parser->status_code == 304 || /* Not Modified */
+ parser->flags & F_SKIPBODY) { /* response to a HEAD request */
+ return 0;
+ }
+
+ if ((parser->flags & F_CHUNKED) || parser->content_length != ULLONG_MAX) {
+ return 0;
+ }
+
+ return 1;
+}
+
+
+int
+http_should_keep_alive (const http_parser *parser)
+{
+ if (parser->http_major > 0 && parser->http_minor > 0) {
+ /* HTTP/1.1 */
+ if (parser->flags & F_CONNECTION_CLOSE) {
+ return 0;
+ }
+ } else {
+ /* HTTP/1.0 or earlier */
+ if (!(parser->flags & F_CONNECTION_KEEP_ALIVE)) {
+ return 0;
+ }
+ }
+
+ return !http_message_needs_eof(parser);
+}
+
+
+const char *
+http_method_str (enum http_method m)
+{
+ return ELEM_AT(method_strings, m, "<unknown>");
+}
+
+
+void
+http_parser_init (http_parser *parser, enum http_parser_type t)
+{
+ void *data = parser->data; /* preserve application data */
+ memset(parser, 0, sizeof(*parser));
+ parser->data = data;
+ parser->type = t;
+ parser->state = (t == HTTP_REQUEST ? s_start_req : (t == HTTP_RESPONSE ? s_start_res : s_start_req_or_res));
+ parser->http_errno = HPE_OK;
+}
+
+void
+http_parser_settings_init(http_parser_settings *settings)
+{
+ memset(settings, 0, sizeof(*settings));
+}
+
+const char *
+http_errno_name(enum http_errno err) {
+ assert(((size_t) err) < ARRAY_SIZE(http_strerror_tab));
+ return http_strerror_tab[err].name;
+}
+
+const char *
+http_errno_description(enum http_errno err) {
+ assert(((size_t) err) < ARRAY_SIZE(http_strerror_tab));
+ return http_strerror_tab[err].description;
+}
+
+static enum http_host_state
+http_parse_host_char(enum http_host_state s, const char ch) {
+ switch(s) {
+ case s_http_userinfo:
+ case s_http_userinfo_start:
+ if (ch == '@') {
+ return s_http_host_start;
+ }
+
+ if (IS_USERINFO_CHAR(ch)) {
+ return s_http_userinfo;
+ }
+ break;
+
+ case s_http_host_start:
+ if (ch == '[') {
+ return s_http_host_v6_start;
+ }
+
+ if (IS_HOST_CHAR(ch)) {
+ return s_http_host;
+ }
+
+ break;
+
+ case s_http_host:
+ if (IS_HOST_CHAR(ch)) {
+ return s_http_host;
+ }
+
+ /* FALLTHROUGH */
+ case s_http_host_v6_end:
+ if (ch == ':') {
+ return s_http_host_port_start;
+ }
+
+ break;
+
+ case s_http_host_v6:
+ if (ch == ']') {
+ return s_http_host_v6_end;
+ }
+
+ /* FALLTHROUGH */
+ case s_http_host_v6_start:
+ if (IS_HEX(ch) || ch == ':' || ch == '.') {
+ return s_http_host_v6;
+ }
+
+ if (s == s_http_host_v6 && ch == '%') {
+ return s_http_host_v6_zone_start;
+ }
+ break;
+
+ case s_http_host_v6_zone:
+ if (ch == ']') {
+ return s_http_host_v6_end;
+ }
+
+ /* FALLTHROUGH */
+ case s_http_host_v6_zone_start:
+ /* RFC 6874 Zone ID consists of 1*( unreserved / pct-encoded) */
+ if (IS_ALPHANUM(ch) || ch == '%' || ch == '.' || ch == '-' || ch == '_' ||
+ ch == '~') {
+ return s_http_host_v6_zone;
+ }
+ break;
+
+ case s_http_host_port:
+ case s_http_host_port_start:
+ if (IS_NUM(ch)) {
+ return s_http_host_port;
+ }
+
+ break;
+
+ default:
+ break;
+ }
+ return s_http_host_dead;
+}
+
+static int
+http_parse_host(const char * buf, struct http_parser_url *u, int found_at) {
+ enum http_host_state s;
+
+ const char *p;
+ size_t buflen = u->field_data[UF_HOST].off + u->field_data[UF_HOST].len;
+
+ assert(u->field_set & (1 << UF_HOST));
+
+ u->field_data[UF_HOST].len = 0;
+
+ s = found_at ? s_http_userinfo_start : s_http_host_start;
+
+ for (p = buf + u->field_data[UF_HOST].off; p < buf + buflen; p++) {
+ enum http_host_state new_s = http_parse_host_char(s, *p);
+
+ if (new_s == s_http_host_dead) {
+ return 1;
+ }
+
+ switch(new_s) {
+ case s_http_host:
+ if (s != s_http_host) {
+ u->field_data[UF_HOST].off = p - buf;
+ }
+ u->field_data[UF_HOST].len++;
+ break;
+
+ case s_http_host_v6:
+ if (s != s_http_host_v6) {
+ u->field_data[UF_HOST].off = p - buf;
+ }
+ u->field_data[UF_HOST].len++;
+ break;
+
+ case s_http_host_v6_zone_start:
+ case s_http_host_v6_zone:
+ u->field_data[UF_HOST].len++;
+ break;
+
+ case s_http_host_port:
+ if (s != s_http_host_port) {
+ u->field_data[UF_PORT].off = p - buf;
+ u->field_data[UF_PORT].len = 0;
+ u->field_set |= (1 << UF_PORT);
+ }
+ u->field_data[UF_PORT].len++;
+ break;
+
+ case s_http_userinfo:
+ if (s != s_http_userinfo) {
+ u->field_data[UF_USERINFO].off = p - buf ;
+ u->field_data[UF_USERINFO].len = 0;
+ u->field_set |= (1 << UF_USERINFO);
+ }
+ u->field_data[UF_USERINFO].len++;
+ break;
+
+ default:
+ break;
+ }
+ s = new_s;
+ }
+
+ /* Make sure we don't end somewhere unexpected */
+ switch (s) {
+ case s_http_host_start:
+ case s_http_host_v6_start:
+ case s_http_host_v6:
+ case s_http_host_v6_zone_start:
+ case s_http_host_v6_zone:
+ case s_http_host_port_start:
+ case s_http_userinfo:
+ case s_http_userinfo_start:
+ return 1;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+void
+http_parser_url_init(struct http_parser_url *u) {
+ memset(u, 0, sizeof(*u));
+}
+
+int
+http_parser_parse_url(const char *buf, size_t buflen, int is_connect,
+ struct http_parser_url *u)
+{
+ enum state s;
+ const char *p;
+ enum http_parser_url_fields uf, old_uf;
+ int found_at = 0;
+
+ u->port = u->field_set = 0;
+ s = is_connect ? s_req_server_start : s_req_spaces_before_url;
+ old_uf = UF_MAX;
+
+ for (p = buf; p < buf + buflen; p++) {
+ s = parse_url_char(s, *p);
+
+ /* Figure out the next field that we're operating on */
+ switch (s) {
+ case s_dead:
+ return 1;
+
+ /* Skip delimeters */
+ case s_req_schema_slash:
+ case s_req_schema_slash_slash:
+ case s_req_server_start:
+ case s_req_query_string_start:
+ case s_req_fragment_start:
+ continue;
+
+ case s_req_schema:
+ uf = UF_SCHEMA;
+ break;
+
+ case s_req_server_with_at:
+ found_at = 1;
+
+ /* FALLTROUGH */
+ case s_req_server:
+ uf = UF_HOST;
+ break;
+
+ case s_req_path:
+ uf = UF_PATH;
+ break;
+
+ case s_req_query_string:
+ uf = UF_QUERY;
+ break;
+
+ case s_req_fragment:
+ uf = UF_FRAGMENT;
+ break;
+
+ default:
+ assert(!"Unexpected state");
+ return 1;
+ }
+
+ /* Nothing's changed; soldier on */
+ if (uf == old_uf) {
+ u->field_data[uf].len++;
+ continue;
+ }
+
+ u->field_data[uf].off = p - buf;
+ u->field_data[uf].len = 1;
+
+ u->field_set |= (1 << uf);
+ old_uf = uf;
+ }
+
+ /* host must be present if there is a schema */
+ /* parsing http:///toto will fail */
+ if ((u->field_set & (1 << UF_SCHEMA)) &&
+ (u->field_set & (1 << UF_HOST)) == 0) {
+ return 1;
+ }
+
+ if (u->field_set & (1 << UF_HOST)) {
+ if (http_parse_host(buf, u, found_at) != 0) {
+ return 1;
+ }
+ }
+
+ /* CONNECT requests can only contain "hostname:port" */
+ if (is_connect && u->field_set != ((1 << UF_HOST)|(1 << UF_PORT))) {
+ return 1;
+ }
+
+ if (u->field_set & (1 << UF_PORT)) {
+ /* Don't bother with endp; we've already validated the string */
+ unsigned long v = strtoul(buf + u->field_data[UF_PORT].off, NULL, 10);
+
+ /* Ports have a max value of 2^16 */
+ if (v > 0xffff) {
+ return 1;
+ }
+
+ u->port = (uint16_t) v;
+ }
+
+ return 0;
+}
+
+void
+http_parser_pause(http_parser *parser, int paused) {
+ /* Users should only be pausing/unpausing a parser that is not in an error
+ * state. In non-debug builds, there's not much that we can do about this
+ * other than ignore it.
+ */
+ if (HTTP_PARSER_ERRNO(parser) == HPE_OK ||
+ HTTP_PARSER_ERRNO(parser) == HPE_PAUSED) {
+ SET_ERRNO((paused) ? HPE_PAUSED : HPE_OK);
+ } else {
+ assert(0 && "Attempting to pause parser in error state");
+ }
+}
+
+int
+http_body_is_final(const struct http_parser *parser) {
+ return parser->state == s_message_done;
+}
+
+unsigned long
+http_parser_version(void) {
+ return HTTP_PARSER_VERSION_MAJOR * 0x10000 |
+ HTTP_PARSER_VERSION_MINOR * 0x00100 |
+ HTTP_PARSER_VERSION_PATCH * 0x00001;
+}
--- /dev/null
+#ifndef __HAVE_CONFIG_H_
+#define __HAVE_CONFIG_H_
+
+#define _U_
+
+#define SIZEOF_INT_P 2
+
+//#define DEBUGBUILD
+#include "stdio.h"
+#include "stdlib.h"
+#include "string.h"
+
+#if (!defined(nghttp_unlikely))
+#define nghttp_unlikely(Expression) !!(Expression)
+#endif
+
+#define nghttp_ASSERT(Expression) do{if (!(Expression)) printf("%d\n", __LINE__);}while(0)
+
+#define CU_ASSERT(a) nghttp_ASSERT(a)
+#define CU_ASSERT_FATAL(a) nghttp_ASSERT(a)
+
+#if 1
+#define NGHTTP2_DEBUG_INFO() printf("%s %d\n", __FILE__, __LINE__)
+#else
+#define NGHTTP2_DEBUG_INFO()
+#endif
+
+#define NGHTTP_PLATFORM_HTONS(_n) ((uint16_t)((((_n) & 0xff) << 8) | (((_n) >> 8) & 0xff)))
+#define NGHTTP_PLATFORM_HTONL(_n) ((uint32_t)( (((_n) & 0xff) << 24) | (((_n) & 0xff00) << 8) | (((_n) >> 8) & 0xff00) | (((_n) >> 24) & 0xff) ))
+
+#define htons(x) NGHTTP_PLATFORM_HTONS(x)
+#define ntohs(x) NGHTTP_PLATFORM_HTONS(x)
+#define htonl(x) NGHTTP_PLATFORM_HTONL(x)
+#define ntohl(x) NGHTTP_PLATFORM_HTONL(x)
+
+#endif
--- /dev/null
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+#ifndef http_parser_h
+#define http_parser_h
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Also update SONAME in the Makefile whenever you change these. */
+#define HTTP_PARSER_VERSION_MAJOR 2
+#define HTTP_PARSER_VERSION_MINOR 7
+#define HTTP_PARSER_VERSION_PATCH 0
+
+#include <sys/types.h>
+#if defined(_WIN32) && !defined(__MINGW32__) && \
+ (!defined(_MSC_VER) || _MSC_VER<1600) && !defined(__WINE__)
+#include <BaseTsd.h>
+#include <stddef.h>
+typedef __int8 int8_t;
+typedef unsigned __int8 uint8_t;
+typedef __int16 int16_t;
+typedef unsigned __int16 uint16_t;
+typedef __int32 int32_t;
+typedef unsigned __int32 uint32_t;
+typedef __int64 int64_t;
+typedef unsigned __int64 uint64_t;
+#else
+#include <stdint.h>
+#endif
+
+/* Compile with -DHTTP_PARSER_STRICT=0 to make less checks, but run
+ * faster
+ */
+#ifndef HTTP_PARSER_STRICT
+# define HTTP_PARSER_STRICT 1
+#endif
+
+/* Maximium header size allowed. If the macro is not defined
+ * before including this header then the default is used. To
+ * change the maximum header size, define the macro in the build
+ * environment (e.g. -DHTTP_MAX_HEADER_SIZE=<value>). To remove
+ * the effective limit on the size of the header, define the macro
+ * to a very large number (e.g. -DHTTP_MAX_HEADER_SIZE=0x7fffffff)
+ */
+#ifndef HTTP_MAX_HEADER_SIZE
+# define HTTP_MAX_HEADER_SIZE (80*1024)
+#endif
+
+typedef struct http_parser http_parser;
+typedef struct http_parser_settings http_parser_settings;
+
+
+/* Callbacks should return non-zero to indicate an error. The parser will
+ * then halt execution.
+ *
+ * The one exception is on_headers_complete. In a HTTP_RESPONSE parser
+ * returning '1' from on_headers_complete will tell the parser that it
+ * should not expect a body. This is used when receiving a response to a
+ * HEAD request which may contain 'Content-Length' or 'Transfer-Encoding:
+ * chunked' headers that indicate the presence of a body.
+ *
+ * Returning `2` from on_headers_complete will tell parser that it should not
+ * expect neither a body nor any futher responses on this connection. This is
+ * useful for handling responses to a CONNECT request which may not contain
+ * `Upgrade` or `Connection: upgrade` headers.
+ *
+ * http_data_cb does not return data chunks. It will be called arbitrarily
+ * many times for each string. E.G. you might get 10 callbacks for "on_url"
+ * each providing just a few characters more data.
+ */
+typedef int (*http_data_cb) (http_parser*, const char *at, size_t length);
+typedef int (*http_cb) (http_parser*);
+
+
+/* Request Methods */
+#define HTTP_METHOD_MAP(XX) \
+ XX(0, DELETE, DELETE) \
+ XX(1, GET, GET) \
+ XX(2, HEAD, HEAD) \
+ XX(3, POST, POST) \
+ XX(4, PUT, PUT) \
+ /* pathological */ \
+ XX(5, CONNECT, CONNECT) \
+ XX(6, OPTIONS, OPTIONS) \
+ XX(7, TRACE, TRACE) \
+ /* WebDAV */ \
+ XX(8, COPY, COPY) \
+ XX(9, LOCK, LOCK) \
+ XX(10, MKCOL, MKCOL) \
+ XX(11, MOVE, MOVE) \
+ XX(12, PROPFIND, PROPFIND) \
+ XX(13, PROPPATCH, PROPPATCH) \
+ XX(14, SEARCH, SEARCH) \
+ XX(15, UNLOCK, UNLOCK) \
+ XX(16, BIND, BIND) \
+ XX(17, REBIND, REBIND) \
+ XX(18, UNBIND, UNBIND) \
+ XX(19, ACL, ACL) \
+ /* subversion */ \
+ XX(20, REPORT, REPORT) \
+ XX(21, MKACTIVITY, MKACTIVITY) \
+ XX(22, CHECKOUT, CHECKOUT) \
+ XX(23, MERGE, MERGE) \
+ /* upnp */ \
+ XX(24, MSEARCH, M-SEARCH) \
+ XX(25, NOTIFY, NOTIFY) \
+ XX(26, SUBSCRIBE, SUBSCRIBE) \
+ XX(27, UNSUBSCRIBE, UNSUBSCRIBE) \
+ /* RFC-5789 */ \
+ XX(28, PATCH, PATCH) \
+ XX(29, PURGE, PURGE) \
+ /* CalDAV */ \
+ XX(30, MKCALENDAR, MKCALENDAR) \
+ /* RFC-2068, section 19.6.1.2 */ \
+ XX(31, LINK, LINK) \
+ XX(32, UNLINK, UNLINK) \
+
+enum http_method
+ {
+#define XX(num, name, string) HTTP_##name = num,
+ HTTP_METHOD_MAP(XX)
+#undef XX
+ };
+
+
+enum http_parser_type { HTTP_REQUEST, HTTP_RESPONSE, HTTP_BOTH };
+
+
+/* Flag values for http_parser.flags field */
+enum flags
+ { F_CHUNKED = 1 << 0
+ , F_CONNECTION_KEEP_ALIVE = 1 << 1
+ , F_CONNECTION_CLOSE = 1 << 2
+ , F_CONNECTION_UPGRADE = 1 << 3
+ , F_TRAILING = 1 << 4
+ , F_UPGRADE = 1 << 5
+ , F_SKIPBODY = 1 << 6
+ , F_CONTENTLENGTH = 1 << 7
+ };
+
+
+/* Map for errno-related constants
+ *
+ * The provided argument should be a macro that takes 2 arguments.
+ */
+#define HTTP_ERRNO_MAP(XX) \
+ /* No error */ \
+ XX(OK, "success") \
+ \
+ /* Callback-related errors */ \
+ XX(CB_message_begin, "the on_message_begin callback failed") \
+ XX(CB_url, "the on_url callback failed") \
+ XX(CB_header_field, "the on_header_field callback failed") \
+ XX(CB_header_value, "the on_header_value callback failed") \
+ XX(CB_headers_complete, "the on_headers_complete callback failed") \
+ XX(CB_body, "the on_body callback failed") \
+ XX(CB_message_complete, "the on_message_complete callback failed") \
+ XX(CB_status, "the on_status callback failed") \
+ XX(CB_chunk_header, "the on_chunk_header callback failed") \
+ XX(CB_chunk_complete, "the on_chunk_complete callback failed") \
+ \
+ /* Parsing-related errors */ \
+ XX(INVALID_EOF_STATE, "stream ended at an unexpected time") \
+ XX(HEADER_OVERFLOW, \
+ "too many header bytes seen; overflow detected") \
+ XX(CLOSED_CONNECTION, \
+ "data received after completed connection: close message") \
+ XX(INVALID_VERSION, "invalid HTTP version") \
+ XX(INVALID_STATUS, "invalid HTTP status code") \
+ XX(INVALID_METHOD, "invalid HTTP method") \
+ XX(INVALID_URL, "invalid URL") \
+ XX(INVALID_HOST, "invalid host") \
+ XX(INVALID_PORT, "invalid port") \
+ XX(INVALID_PATH, "invalid path") \
+ XX(INVALID_QUERY_STRING, "invalid query string") \
+ XX(INVALID_FRAGMENT, "invalid fragment") \
+ XX(LF_EXPECTED, "LF character expected") \
+ XX(INVALID_HEADER_TOKEN, "invalid character in header") \
+ XX(INVALID_CONTENT_LENGTH, \
+ "invalid character in content-length header") \
+ XX(UNEXPECTED_CONTENT_LENGTH, \
+ "unexpected content-length header") \
+ XX(INVALID_CHUNK_SIZE, \
+ "invalid character in chunk size header") \
+ XX(INVALID_CONSTANT, "invalid constant string") \
+ XX(INVALID_INTERNAL_STATE, "encountered unexpected internal state")\
+ XX(STRICT, "strict mode assertion failed") \
+ XX(PAUSED, "parser is paused") \
+ XX(UNKNOWN, "an unknown error occurred")
+
+
+/* Define HPE_* values for each errno value above */
+#define HTTP_ERRNO_GEN(n, s) HPE_##n,
+enum http_errno {
+ HTTP_ERRNO_MAP(HTTP_ERRNO_GEN)
+};
+#undef HTTP_ERRNO_GEN
+
+
+/* Get an http_errno value from an http_parser */
+#define HTTP_PARSER_ERRNO(p) ((enum http_errno) (p)->http_errno)
+
+
+struct http_parser {
+ /** PRIVATE **/
+ unsigned int type : 2; /* enum http_parser_type */
+ unsigned int flags : 8; /* F_* values from 'flags' enum; semi-public */
+ unsigned int state : 7; /* enum state from http_parser.c */
+ unsigned int header_state : 7; /* enum header_state from http_parser.c */
+ unsigned int index : 7; /* index into current matcher */
+ unsigned int lenient_http_headers : 1;
+
+ uint32_t nread; /* # bytes read in various scenarios */
+ uint64_t content_length; /* # bytes in body (0 if no Content-Length header) */
+
+ /** READ-ONLY **/
+ unsigned short http_major;
+ unsigned short http_minor;
+ unsigned int status_code : 16; /* responses only */
+ unsigned int method : 8; /* requests only */
+ unsigned int http_errno : 7;
+
+ /* 1 = Upgrade header was present and the parser has exited because of that.
+ * 0 = No upgrade header present.
+ * Should be checked when http_parser_execute() returns in addition to
+ * error checking.
+ */
+ unsigned int upgrade : 1;
+
+ /** PUBLIC **/
+ void *data; /* A pointer to get hook to the "connection" or "socket" object */
+};
+
+
+struct http_parser_settings {
+ http_cb on_message_begin;
+ http_data_cb on_url;
+ http_data_cb on_status;
+ http_data_cb on_header_field;
+ http_data_cb on_header_value;
+ http_cb on_headers_complete;
+ http_data_cb on_body;
+ http_cb on_message_complete;
+ /* When on_chunk_header is called, the current chunk length is stored
+ * in parser->content_length.
+ */
+ http_cb on_chunk_header;
+ http_cb on_chunk_complete;
+};
+
+
+enum http_parser_url_fields
+ { UF_SCHEMA = 0
+ , UF_HOST = 1
+ , UF_PORT = 2
+ , UF_PATH = 3
+ , UF_QUERY = 4
+ , UF_FRAGMENT = 5
+ , UF_USERINFO = 6
+ , UF_MAX = 7
+ };
+
+
+/* Result structure for http_parser_parse_url().
+ *
+ * Callers should index into field_data[] with UF_* values iff field_set
+ * has the relevant (1 << UF_*) bit set. As a courtesy to clients (and
+ * because we probably have padding left over), we convert any port to
+ * a uint16_t.
+ */
+struct http_parser_url {
+ uint16_t field_set; /* Bitmask of (1 << UF_*) values */
+ uint16_t port; /* Converted UF_PORT string */
+
+ struct {
+ uint16_t off; /* Offset into buffer in which field starts */
+ uint16_t len; /* Length of run in buffer */
+ } field_data[UF_MAX];
+};
+
+
+/* Returns the library version. Bits 16-23 contain the major version number,
+ * bits 8-15 the minor version number and bits 0-7 the patch level.
+ * Usage example:
+ *
+ * unsigned long version = http_parser_version();
+ * unsigned major = (version >> 16) & 255;
+ * unsigned minor = (version >> 8) & 255;
+ * unsigned patch = version & 255;
+ * printf("http_parser v%u.%u.%u\n", major, minor, patch);
+ */
+unsigned long http_parser_version(void);
+
+void http_parser_init(http_parser *parser, enum http_parser_type type);
+
+
+/* Initialize http_parser_settings members to 0
+ */
+void http_parser_settings_init(http_parser_settings *settings);
+
+
+/* Executes the parser. Returns number of parsed bytes. Sets
+ * `parser->http_errno` on error. */
+size_t http_parser_execute(http_parser *parser,
+ const http_parser_settings *settings,
+ const char *data,
+ size_t len);
+
+
+/* If http_should_keep_alive() in the on_headers_complete or
+ * on_message_complete callback returns 0, then this should be
+ * the last message on the connection.
+ * If you are the server, respond with the "Connection: close" header.
+ * If you are the client, close the connection.
+ */
+int http_should_keep_alive(const http_parser *parser);
+
+/* Returns a string version of the HTTP method. */
+const char *http_method_str(enum http_method m);
+
+/* Return a string name of the given error */
+const char *http_errno_name(enum http_errno err);
+
+/* Return a string description of the given error */
+const char *http_errno_description(enum http_errno err);
+
+/* Initialize all http_parser_url members to 0 */
+void http_parser_url_init(struct http_parser_url *u);
+
+/* Parse a URL; return nonzero on failure */
+int http_parser_parse_url(const char *buf, size_t buflen,
+ int is_connect,
+ struct http_parser_url *u);
+
+/* Pause or un-pause the parser; a nonzero value pauses */
+void http_parser_pause(http_parser *parser, int paused);
+
+/* Checks if this is the final chunk of the body. */
+int http_body_is_final(const http_parser *parser);
+
+#ifdef __cplusplus
+}
+#endif
+#endif
projects / esp-idf / commitdiff