2 Changes with Apache 2.5.0
4 *) mod_authnz_ldap: Return LDAP connections to the pool before the handler
5 is run, instead of waiting until the end of the request. [Eric Covener]
7 *) mod_ldap: Be more conservative with the last-used time for
8 LDAPConnectionPoolTTL. PR54587 [Eric Covener]
10 *) mod_deflate: Don't fail when flushing inflated data to the user-agent
11 and that coincides with the end of stream ("Zlib error flushing inflate
12 buffer"). PR 56196. [Christoph Fausak <christoph fausak glueckkanja.com>]
14 *) mod_proxy: Don't limit the size of the connectable Unix Domain Socket
15 paths. [Christophe Jaillet, Yann Ylavic]
17 *) mod_ssl: dump SSL IO/state for the write side of the connection(s),
18 like reads (level TRACE4). [Yann Ylavic]
20 *) mod_proxy: Shutdown (eg. close notify) the backend connection before
21 closing. [Yann Ylavic]
23 *) mpm_event[opt]: Send the SSL close notify alert when the KeepAliveTimeout
24 expires. PR54998. [Yann Ylavic]
26 *) mod_ssl: Ensure that the SSL close notify alert is flushed to the client.
27 PR54998. [Tim Kosse <tim.kosse filezilla-project.org>, Yann Ylavic]
29 *) mod_log_config: Add GlobalLog to allow a globally defined log to
30 be inherited by virtual hosts that define a CustomLog.
31 [Edward Lu <Chaosed0 gmail.com>]
33 *) MPMs: Support SO_REUSEPORT to create multiple duplicated listener
34 records for scalability. [Yingqi Lu <yingqi.lu@intel.com>,
35 Jeff Trawick, Jim Jagielski]
37 *) mod_proxy_html: support automatic detection of doctype and processing
38 of FPIs. PR56285 [Micha Lenk <micha lenk info>, Nick Kew]
40 *) mod_proxy_html: skip documents shorter than 4 bytes
41 PR 56286 [Micha Lenk <micha lenk info>]
43 *) mod_proxy_fdpass: Fix computation of the size of 'struct sockaddr_un'
44 when passed to 'connect()'.
45 [Graham Dumpleton <grahamd apache org>]
47 *) core: Add ap_mpm_resume_suspended() API to allow a suspended connection
49 [Artem <artemciy gmail.com>, Edward Lu <Chaosed0 gmail.com>]
51 *) core: Add ap_mpm_register_socket_callback_timeout() API. [Eric Covener]
53 *) mod_proxy_wstunnel: Honor ProxyWebsocketIdleTimeout in asynchronous
54 processing mode. [Eric Covener]
56 *) mod_authnz_ldap: Fail explicitly when the filter is too long. Remove
57 unnecessary apr_pstrdup() and strlen(). [Graham Leggett]
59 *) Add the ldap-search option to mod_authnz_ldap, allowing authorization
60 to be based on arbitrary expressions that do not include the username.
63 *) Add the ldap function to the expression API, allowing LDAP filters and
64 distinguished names based on expressions to be escaped correctly to
65 guard against LDAP injection. [Graham Leggett]
67 *) Add module mod_ssl_ct, which provides an implementation of Certificate
68 Transparency (RFC 6962) for httpd. [Jeff Trawick]
70 *) mod_proxy: Preserve original request headers even if they differ
71 from the ones to be forwarded to the backend. PR 45387.
74 *) mod_remoteip: Prevent an external proxy from presenting an internal
75 proxy. PR 55962. [Mike Rumph]
77 *) mod_ssl: Add hooks to allow other modules to perform processing at
78 several stages of initialization and connection handling. See
79 mod_ssl_openssl.h. [Jeff Trawick]
81 *) mod_proxy_wstunnel: Avoid sending error responses down an upgraded
82 websockets connection as it is being close down. [Eric Covener]
84 *) mod_proxy_wstunnel: Allow the administrator to cap the amount
85 of time a synchronous websockets connection stays idle with
86 ProxyWebsocketIdleTimeout. [Eric Covener]
88 *) mod_proxy_wstunnel: Change to opt-in for asynchronous support, adding
89 directives ProxyWebsocketAsync and ProxyWebsocketAsyncDelay.
92 *) mod_proxy_wstunnel: Stop leaking websockets backend connections under
93 event MPM (trunk-only). [Eric Covener]
95 *) mod_proxy_http: Add detach_backend hook (potentially usable
96 in other proxy scheme handlers). [Jeff Trawick]
98 *) mod_deflate: Add DeflateAlterETag to control how the ETag
99 is modified. The 'NoChange' parameter mimics 2.2.x behavior.
100 PR 45023, PR 39727. [Eric Covener]
102 *) mod_rewrite: Add 'BNF' (backreferences-no-plus) flag to RewriteRule to
103 allow spaces in backreferences to be encoded as %20 instead of '+'.
106 *) mod_rewrite: Support an optional list of characters to escape in the
107 argument for the 'B' (escape backreferences) flag. [Eric Covener]
109 *) mod_ssl: Add SSLOCSPUseRequestNonce directive to control whether or not
110 OCSP requests should use a nonce to be checked against the responder's
111 one. PR 56233. [ Yann Ylavic ]
113 *) mod_dir: Default to 2.2-like behavior and skip execution when method is
114 neither GET nor POST, such as for DAV requests. PR 54914. [Chris Darroch]
116 *) mod_rewrite: Rename the handler that does per-directory internal
117 redirects to "rewrite-redirect-handler" from "redirect-handler" so
118 it is less ambiguous and less likely to be reused. [Eric Covener]
120 *) mod_rewrite: Protect against looping with the [N] flag by enforcing a
121 default limit of 10000 iterations, and allowing each rule to change its
122 limit. [Eric Covener]
124 *) mod_ssl: Fix config merging of SSLOCSPEnable and SSLOCSPOverrideResponder.
127 *) Add HttpContentLengthHeadZero and HttpExpectStrict directives.
128 [Yehuda Sadeh <yehuda inktank com>, Justin Erenkrantz]
130 *) mod_ssl: Add -t -DDUMP_CA_CERTS option which dumps the filenames of all
131 configured SSL CA certificates to stdout the same way as DUMP_CERTS does.
134 *) mod_ssl: Don't flush when an EOS is received. Prepares mod_ssl
135 to support write completion. [Graham Leggett]
137 *) core: Add parse_errorlog_arg callback to ap_errorlog_provider
138 to allow providers to check the ErrorLog argument. [Jan Kaluza]
140 *) mod_cgid: Use the servers Timeout for each read from a CGI script,
141 allow override with new CGIDRequestTimeout directive. PR43494
142 [Eric Covener, Toshikuni Fukaya <toshikuni-fukaya cybozu co jp>]
144 *) core: ensure any abnormal exit is reported to stderr if it's a tty.
147 *) mod_lua: Let the Inter-VM get/set functions work with a global
148 shared memory pool instead of a per-process pool. [Daniel Gruno]
150 *) ldap: Support ldaps when using the Microsoft LDAP SDK.
151 PR 54626. [Jean-Frederic Clere]
153 *) mod_proxy: Add ap_connection_reusable() for checking if a connection
154 is reusable as of this point in processing. [Jeff Trawick]
156 *) mod_authnz_ldap: Change default value of AuthLDAPMaxSubGroupDepth to 0
157 to avoid performance problems when subgroups aren't in use. [Eric Covener]
159 *) mod_syslog: New module implementing syslog ap_error_log provider.
160 Previously, this code was part of core, now it's in separate module.
163 *) core: Add ap_errorlog_provider to make ErrorLog logging modular. Move
164 syslog support from core to new mod_syslog. [Jan Kaluza]
166 *) mod_status, mod_echo: Fix the display of client addresses.
167 They were truncated to 31 characters which is not enough for IPv6 addresses.
168 PR 54848 [Bernhard Schmidt <berni birkenwald de>]
170 *) core: Add ap_log_data(), ap_log_rdata(), etc. for logging buffers.
173 *) mod_unique_id: Use output of the PRNG rather than IP address and
174 pid, avoiding sleep() call and possible DNS issues at startup,
175 plus improving randomness for IPv6-only hosts.
176 [Jan Kaluza <jkaluza redhat.com>]
178 *) mod_authnz_ldap: Support primitive LDAP servers that do not accept
179 filters, such as "SDBM-backed LDAP" on z/OS, by allowing a special
180 filter "none" to be specified in AuthLDAPURL. [Eric Covener]
182 *) mod_file_cache: mod_file_cache should be able to serve files that
183 haven't had a Content-Type set via e.g. mod_mime. [Eric Covener]
185 *) core: merge AllowEncodedSlashes from the base configuration into
186 virtual hosts. [Eric Covener]
188 *) AIX: Install DSO's with "cp" instead of "install" in instdso.sh
191 *) mod_ldap: Don't keep retrying if a new LDAP connection times out.
194 *) mod_deflate: permit compilation of mod_deflate against a zlib that has
195 been configured with -D Z_PREFIX, which redefines the token "deflate".
198 *) mod_auth_digest: Use the secret when generating nonces in all cases and
199 not only when AuthName is used in .htaccess files (this change may cause
200 problems if used with round robin load balancers). Don't regenerate the
201 secret on graceful restarts. PR 54637 [Stefan Fritsch]
203 *) core: Remove apr_brigade_flatten(), buffering and duplicated code
204 from the HTTP_IN filter, parse chunks in a single pass with zero copy.
205 Reduce memory usage by 48 bytes per request. [Graham Leggett]
207 *) core: Stop the HTTP_IN filter from attempting to write error buckets
208 to the output filters, which is bogus in the proxy case. Create a
209 clean mapping from APR codes to HTTP status codes, and use it where
210 needed. [Graham Leggett]
212 *) mod_proxy: Ensure network errors detected by the proxy are returned as
213 504 Gateway Timout as opposed to 502 Bad Gateway, in order to be
214 compliant with RFC2616 14.9.4 Cache Revalidation and Reload Controls.
216 *) mod_dav: mod_dav overrides dav_fs response on PUT failure. PR 35981
217 [Basant Kumar Kukreja <basant.kukreja sun.com>, Alejandro Alvarez
218 <alejandro.alvarez.ayllon cern.ch>]
220 *) mod_ldap: LDAP connections used for authentication were not respecting
221 LDAPConnectionPoolTimeout. PR 54587
223 *) core: ap_rgetline_core now pulls from r->proto_input_filters.
225 *) mod_proxy_html: process parsed comments immediately.
226 Fixes bug where parsed comments may be lost. [Nick Kew]
228 *) mod_proxy_html: introduce doctype for HTML 5 [Nick Kew]
230 *) mod_proxy_html: fix typo-bug processing "strict" vs "transitional"
231 HTML/XHTML [Nick Kew]
233 *) core: Add option to add valgrind support. Use it to reduce false positive
234 warnings in mod_ssl. [Stefan Fritsch]
236 *) mod_authn_file, mod_authn_dbd, mod_authn_dbm, mod_authn_socache:
237 Cache the result of the most recent password hash verification for every
238 keep-alive connection. This saves some expensive calculations.
241 *) http: Remove support for Request-Range header sent by Navigator 2-3 and
242 MSIE 3. [Stefan Fritsch]
244 *) core, http: Extend HttpProtocol with an option to enforce stricter HTTP
245 conformance or to only log the found problems. [Stefan Fritsch]
247 *) core: Correctly parse an IPv6 literal host specification in an absolute
248 URL in the request line. [Stefan Fritsch]
252 *) core: Add LogLevelOverride directive that allows to override the
253 loglevel for clients from certain IPs. This also works for things
254 like the SSL handshake where <If> LogLevel ... </If> is evaluated
255 too late. [Stefan Fritsch]
257 *) core: Add new directive Warning to issue warnings from a configuration
258 file. Both Warning and Error now generate a timestamped log message.
261 *) ap_expr: Add SERVER_PROTOCOL_VERSION, ..._MAJOR, and ..._MINOR
262 variables. [Stefan Fritsch]
264 *) core: New directive RegisterHttpMethod for registering non-standard
265 HTTP methods. [Stefan Fritsch]
267 *) core: New directive HttpProtocol which allows to disable HTTP/0.9
268 support. [Stefan Fritsch]
270 *) mod_allowhandlers: New module to forbid specific handlers for specific
271 directories. [Stefan Fritsch]
273 *) mod_systemd: New module, for integration with systemd on Linux.
274 [Jan Kaluza <jkaluza redhat.com>]
276 *) WinNT MPM: Store pid and generation for each thread in scoreboard
277 to allow tracking of threads from exiting children via mod_status
278 or other such mechanisms. [Jeff Trawick]
280 *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR:
281 - APIs: ap_log_pid(), ap_remove_pid, ap_read_pid()
282 - core: the scoreboard (ScoreBoardFile), pid file (PidFile), and
284 - mod_cache: thundering herd lock directory
285 - mod_lbmethod_heartbeat, mod_heartmonitor: heartbeat storage file
286 - mod_ldap: shared memory cache
287 - mod_socache_shmcb, mod_socache_dbm: shared memory or dbm for cache
290 *) suexec: Add --enable-suexec-capabilites support on Linux, to use
291 setuid/setgid capability bits rather than a setuid root binary.
294 *) suexec: Add support for logging to syslog as an alternative to logging
295 to a file; configure --without-suexec-logfile --with-suexec-syslog.
298 *) mod_ssl: Add support for TLS Next Protocol Negotiation. PR 52210.
299 [Matthew Steele <mdsteele google.com>]
301 *) cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will
302 be compiled by the build compiler instead of the host compiler.
303 Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected.
304 PR 51257. [Guenter Knauf]
306 *) core: In maintainer mode, replace apr_palloc with a version that
307 initializes the allocated memory with non-zero values, except if
308 AP_DEBUG_NO_ALLOC_POISON is defined. [Stefan Fritsch]
310 *) mod_policy: Add a new testing module to help server administrators
311 enforce a configurable level of protocol compliance on their
312 servers and application servers behind theirs. [Graham Leggett]
314 *) mod_firehose: Add a new debugging module able to record traffic
315 passing through the server in such a way that connections and/or
316 requests be reconstructed and replayed. [Graham Leggett]
326 [Apache 2.5.0-dev includes those bug fixes and changes with the
327 Apache 2.4.xx tree as documented below, except as noted.]
329 Changes with Apache 2.4.x and later:
331 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?view=markup
333 Changes with Apache 2.2.x and later:
335 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup
337 Changes with Apache 2.0.x and later:
339 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup