res = curl_easy_perform(curl);
if(!res) {
- /* extract the content-type */
+ /* extract the available authentication types */
long auth;
res = curl_easy_getinfo(curl, CURLINFO_HTTPAUTH_AVAIL, &auth);
if(!res) {
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
.SH PROTOCOLS
All
.SH EXAMPLE
-TODO
+.nf
+CURL *curl = curl_easy_init();
+if(curl) {
+ CURLcode res;
+ curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
+ res = curl_easy_perform(curl);
+ if(res != CURLE_OK) {
+ long error;
+ res = curl_easy_getinfo(curl, CURLINFO_OS_ERRNO, &error);
+ if(res && error) {
+ printf("Errno: %ld\n", error);
+ }
+ }
+ curl_easy_cleanup(curl);
+}
+.fi
.SH AVAILABILITY
Added in 7.12.2
.SH RETURN VALUE
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
.SH PROTOCOLS
HTTP(S)
.SH EXAMPLE
-TODO
+.nf
+CURL *curl = curl_easy_init();
+if(curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
+ curl_easy_setopt(curl, CURLOPT_PROXY, "http://127.0.0.1:80");
+
+ res = curl_easy_perform(curl);
+
+ if(!res) {
+ /* extract the available proxy authentication types */
+ long auth;
+ res = curl_easy_getinfo(curl, CURLINFO_PROXYAUTH_AVAIL, &auth);
+ if(!res) {
+ if(!auth)
+ printf("No proxy auth available, perhaps no 407?\\n");
+ else {
+ printf("%s%s%s%s\\n",
+ auth & CURLAUTH_BASIC ? "Basic ":"",
+ auth & CURLAUTH_DIGEST ? "Digest ":"",
+ auth & CURLAUTH_NEGOTIATE ? "Negotiate ":"",
+ auth % CURLAUTH_NTLM ? "NTLM ":"");
+ }
+ }
+ }
+ curl_easy_cleanup(curl);
+}
+.fi
.SH AVAILABILITY
Added in 7.10.8
.SH RETURN VALUE
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
.SH PROTOCOLS
All
.SH EXAMPLE
-TODO
+.nf
+/* make libcurl use the already established socket 'sockfd' */
+
+static curl_socket_t opensocket(void *clientp,
+ curlsocktype purpose,
+ struct curl_sockaddr *address)
+{
+ curl_socket_t sockfd;
+ sockfd = *(curl_socket_t *)clientp;
+ /* the actual externally set socket is passed in via the OPENSOCKETDATA
+ option */
+ return sockfd;
+}
+
+static int sockopt_callback(void *clientp, curl_socket_t curlfd,
+ curlsocktype purpose)
+{
+ /* This return code was added in libcurl 7.21.5 */
+ return CURL_SOCKOPT_ALREADY_CONNECTED;
+}
+
+curl = curl_easy_init();
+if(curl) {
+ /* libcurl will internally think that you connect to the host
+ * and port that you specify in the URL option. */
+ curl_easy_setopt(curl, CURLOPT_URL, "http://99.99.99.99:9999");
+ /* call this function to get a socket */
+ curl_easy_setopt(curl, CURLOPT_OPENSOCKETFUNCTION, opensocket);
+ curl_easy_setopt(curl, CURLOPT_OPENSOCKETDATA, &sockfd);
+
+ /* call this function to set options for the socket */
+ curl_easy_setopt(curl, CURLOPT_SOCKOPTFUNCTION, sockopt_callback);
+
+ res = curl_easy_perform(curl);
+
+ curl_easy_cleanup(curl);
+.fi
.SH AVAILABILITY
Added in 7.17.1
.SH RETURN VALUE
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
.SH PROTOCOLS
All
.SH EXAMPLE
+.nf
+/* make libcurl use the already established socket 'sockfd' */
+
+static curl_socket_t opensocket(void *clientp,
+ curlsocktype purpose,
+ struct curl_sockaddr *address)
+{
+ curl_socket_t sockfd;
+ sockfd = *(curl_socket_t *)clientp;
+ /* the actual externally set socket is passed in via the OPENSOCKETDATA
+ option */
+ return sockfd;
+}
+
+static int sockopt_callback(void *clientp, curl_socket_t curlfd,
+ curlsocktype purpose)
+{
+ /* This return code was added in libcurl 7.21.5 */
+ return CURL_SOCKOPT_ALREADY_CONNECTED;
+}
+
+curl = curl_easy_init();
+if(curl) {
+ /* libcurl will internally think that you connect to the host
+ * and port that you specify in the URL option. */
+ curl_easy_setopt(curl, CURLOPT_URL, "http://99.99.99.99:9999");
+ /* call this function to get a socket */
+ curl_easy_setopt(curl, CURLOPT_OPENSOCKETFUNCTION, opensocket);
+ curl_easy_setopt(curl, CURLOPT_OPENSOCKETDATA, &sockfd);
+
+ /* call this function to set options for the socket */
+ curl_easy_setopt(curl, CURLOPT_SOCKOPTFUNCTION, sockopt_callback);
+
+ res = curl_easy_perform(curl);
+
+ curl_easy_cleanup(curl);
+.fi
.SH AVAILABILITY
Added in 7.17.1.
.SH RETURN VALUE
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
.SH PROTOCOLS
All except file://. Note that some protocols don't do very well over proxy.
.SH EXAMPLE
-TODO
+.nf
+CURL *curl = curl_easy_init();
+if(curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/file.txt");
+ curl_easy_setopt(curl, CURLOPT_PREPROXY, "socks4://socks-proxy:1080");
+ curl_easy_setopt(curl, CURLOPT_PROXY, "http://proxy:80");
+ curl_easy_perform(curl);
+}
+.fi
.SH AVAILABILITY
Added in 7.52.0
.SH RETURN VALUE
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
.SH PROTOCOLS
All except file://. Note that some protocols don't do very well over proxy.
.SH EXAMPLE
-TODO
+.nf
+CURL *curl = curl_easy_init();
+if(curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/file.txt");
+ curl_easy_setopt(curl, CURLOPT_PROXY, "http://proxy:80");
+ curl_easy_perform(curl);
+}
+.fi
.SH AVAILABILITY
Since 7.14.1 the proxy environment variable names can include the protocol
scheme.
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
.SH PROTOCOLS
All
.SH EXAMPLE
-TODO
+.nf
+static int sockopt_callback(void *clientp, curl_socket_t curlfd,
+ curlsocktype purpose)
+{
+ int val = *(int *)clientp;
+ setsockopt(curldfd, SOL_SOCKET, SO_RCVBUF, (const char *)&val, sizeof(val));
+ return CURL_SOCKOPT_OK;
+}
+
+curl = curl_easy_init();
+if(curl) {
+ int recvbuffersize = 256 * 1024;
+
+ curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/");
+
+ /* call this function to set options for the socket */
+ curl_easy_setopt(curl, CURLOPT_SOCKOPTFUNCTION, sockopt_callback);
+ curl_easy_setopt(curl, CURLOPT_SOCKOPTDATA, &recvbuffersize);
+
+ res = curl_easy_perform(curl);
+
+ curl_easy_cleanup(curl);
+.fi
.SH AVAILABILITY
Added in 7.16.0
.SH RETURN VALUE
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
.SH PROTOCOLS
All
.SH EXAMPLE
-TODO
+.nf
+/* make libcurl use the already established socket 'sockfd' */
+
+static curl_socket_t opensocket(void *clientp,
+ curlsocktype purpose,
+ struct curl_sockaddr *address)
+{
+ curl_socket_t sockfd;
+ sockfd = *(curl_socket_t *)clientp;
+ /* the actual externally set socket is passed in via the OPENSOCKETDATA
+ option */
+ return sockfd;
+}
+
+static int sockopt_callback(void *clientp, curl_socket_t curlfd,
+ curlsocktype purpose)
+{
+ /* This return code was added in libcurl 7.21.5 */
+ return CURL_SOCKOPT_ALREADY_CONNECTED;
+}
+
+curl = curl_easy_init();
+if(curl) {
+ /* libcurl will internally think that you connect to the host
+ * and port that you specify in the URL option. */
+ curl_easy_setopt(curl, CURLOPT_URL, "http://99.99.99.99:9999");
+ /* call this function to get a socket */
+ curl_easy_setopt(curl, CURLOPT_OPENSOCKETFUNCTION, opensocket);
+ curl_easy_setopt(curl, CURLOPT_OPENSOCKETDATA, &sockfd);
+
+ /* call this function to set options for the socket */
+ curl_easy_setopt(curl, CURLOPT_SOCKOPTFUNCTION, sockopt_callback);
+
+ res = curl_easy_perform(curl);
+
+ curl_easy_cleanup(curl);
+.fi
.SH AVAILABILITY
Added in 7.16.0. The \fICURL_SOCKOPT_ALREADY_CONNECTED\fP return code was
added in 7.21.5.
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_FALSESTART, long enable);
.SH DESCRIPTION
-Pass a long as parameter set to 1 to enable or 0 to disable.
+Pass a long as parameter set to 1L to enable or 0 to disable.
This option determines whether libcurl should use false start during the TLS
handshake. False start is a mode where a TLS client will start sending
.SH PROTOCOLS
All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
.SH EXAMPLE
-TODO
+.nf
+CURL *curl = curl_easy_init();
+if(curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+ curl_easy_setopt(curl, CURLOPT_SSL_FALSESTART, 1L);
+ curl_easy_perform(curl);
+}
+.fi
.SH AVAILABILITY
Added in 7.42.0. This option is currently only supported by the NSS and
Secure Transport (on iOS 7.0 or later, or OS X 10.9 or later) TLS backends.
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TCP_FASTOPEN, long enable);
.SH DESCRIPTION
-Pass a long as parameter set to 1 to enable or 0 to disable.
+Pass a long as parameter set to 1L to enable or 0 to disable.
TCP Fast Open (RFC7413) is a mechanism that allows data to be carried in the
SYN and SYN-ACK packets and consumed by the receiving end during the initial
.SH PROTOCOLS
All
.SH EXAMPLE
-TODO
+.nf
+CURL *curl = curl_easy_init();
+if(curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
+ curl_easy_setopt(curl, CURLOPT_TCP_FASTOPEN, 1L);
+ curl_easy_perform(curl);
+}
+.fi
.SH AVAILABILITY
Added in 7.49.0. This option is currently only supported on Linux and OS X
El Capitan.
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TCP_NODELAY, long nodelay);
.SH DESCRIPTION
Pass a long specifying whether the TCP_NODELAY option is to be set or cleared
-(1 = set, 0 = clear). The option is set by default. This will have no effect
+(1L = set, 0 = clear). The option is set by default. This will have no effect
after the connection has been established.
-Setting this option will disable TCP's Nagle algorithm. The purpose of this
-algorithm is to try to minimize the number of small packets on the network
-(where "small packets" means TCP segments less than the Maximum Segment Size
-(MSS) for the network).
+Setting this option to 1L will disable TCP's Nagle algorithm on this
+connection. The purpose of this algorithm is to try to minimize the number of
+small packets on the network (where "small packets" means TCP segments less
+than the Maximum Segment Size (MSS) for the network).
Maximizing the amount of data sent per TCP segment is good because it
amortizes the overhead of the send. However, in some cases small segments may
.SH PROTOCOLS
All
.SH EXAMPLE
-TODO
+.nf
+CURL *curl = curl_easy_init();
+if(curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
+ /* disable Nagle */
+ curl_easy_setopt(curl, CURLOPT_TCP_FASTOPEN, 0);
+ curl_easy_perform(curl);
+}
+.fi
.SH AVAILABILITY
Always. The default was changed to 1 from 0 in 7.50.2.
.SH RETURN VALUE
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TRANSFER_ENCODING, long enable);
.SH DESCRIPTION
-Pass a long set to 1 to \fIenable\fP or 0 to disable.
+Pass a long set to 1L to \fIenable\fP or 0 to disable.
Adds a request for compressed Transfer Encoding in the outgoing HTTP
request. If the server supports this and so desires, it can respond with the
.SH PROTOCOLS
HTTP
.SH EXAMPLE
-TODO
+.nf
+CURL *curl = curl_easy_init();
+if(curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
+ curl_easy_setopt(curl, CURLOPT_TRANSFER_ENCODING, 1L);
+ curl_easy_perform(curl);
+}
+.fi
.SH AVAILABILITY
Added in 7.21.6
.SH RETURN VALUE
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_UNRESTRICTED_AUTH,
long goahead);
.SH DESCRIPTION
-A long parameter set to 1 tells libcurl it can continue to send authentication
-(user+password) credentials when following locations, even when hostname
-changed. This option is meaningful only when setting
+Set the long \fIgohead\fP parameter to 1L to make libcurl continue to send
+authentication (user+password) credentials when following locations, even when
+hostname changed. This option is meaningful only when setting
\fICURLOPT_FOLLOWLOCATION(3)\fP.
+
+By default, libcurl will only send given credentials to the initial host name
+as given in the original URL, to avoid leaking username + password to other
+sites.
.SH DEFAULT
0
.SH PROTOCOLS
HTTP
.SH EXAMPLE
-TODO
+.nf
+CURL *curl = curl_easy_init();
+if(curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
+ curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
+ curl_easy_setopt(curl, CURLOPT_UNRESTRICTED_AUTH, 1L);
+ curl_easy_perform(curl);
+}
+.fi
.SH AVAILABILITY
Along with HTTP
.SH RETURN VALUE
projects / curl / commitdiff