2 Changes with Apache 2.5.0
4 *) mod_http2: fixed a write after free when streams/connections
5 were aborted before tasks returned. [Stefan Eissing]
7 *) mod_dav: Add support for childtags to dav_error.
8 [Jari Urpalainen <jari.urpalainen nokia.com>]
10 *) abs: include OpenSSL_Applink when compiling on Visual Studio 2015
11 and up. PR59630 [Jan Ehrhardt <phpdev ehrhardt.nl>]
13 *) mod_proxy, mod_ssl: Handle SSLProxy* directives in <Proxy> sections,
14 allowing per backend TLS configuration. [Yann Ylavic]
16 *) core: explicitly exclude 'h2' from protocols announced via an Upgrade:
17 header as commanded by http-wg. [Stefan Eissing]
19 *) http: Respond with "408 Request Timeout" when a timeout occurs while
20 reading the request body. [Yann Ylavic]
22 *) scoreboard/status: Keep workers' previous Client, VHost and Request values
23 when idle, like in 2.4.18 and earlier. [Yann Ylavic]
25 *) mod_proxy_ajp: Add "secret" parameter to proxy workers to implement legacy
26 AJP13 authentication. PR 53098. [Dmitry A. Bakshaev <dab1818 gmail com>]
28 *) mpm_event: Don't take over scoreboard slots from gracefully finishing
29 threads. [Stefan Fritsch]
31 *) mod_status: Display the process slot number in the async connection
32 overview. [Stefan Fritsch]
34 *) mod_include: add the <!--#comment ...> syntax in order to include comments
35 in a SSI file. [Christophe Jaillet based on a suggestion from Rob]
37 *) mpm_event, mpm_worker: Fix computation of MinSpareThreads' lower bound
38 according the number of listeners buckets. [Yann Ylavic]
40 *) mpm: Generalise the ap_mpm_register_socket functions to accept pipes
41 or sockets. [Graham Leggett]
43 *) core: Extend support for setting aside data from the network input filter
44 to any connection or request input filter. [Graham Leggett]
46 *) mod_ssl: Add "no_crl_for_cert_ok" flag to SSLCARevocationCheck directive
47 to opt-in previous behaviour (2.2) with CRLs verification when checking
48 certificate(s) with no corresponding CRL. [Yann Ylavic]
50 *) core: Split ap_create_request() from ap_read_request(). [Graham Leggett]
52 *) ab: Use caseless matching for HTTP tokens (e.g. content-length). PR 59111.
55 *) mod_auth_digest: Fix compatibility with expression-based Authname. PR59039.
58 *) mpm: Add a complete_connection hook that confirms whether an MPM is allowed
59 to leave the WRITE_COMPLETION phase. Move filter code out of the MPMs.
62 *) core: Added support for HTTP code 451. PR58985.
63 [Yehuda Katz <yehuda ymkatz.net>, Jim Jagielski]
65 *) mod_ssl: Add support for OpenSSL 1.1.0. [Rainer Jung]
67 *) mod_filter: Fix AddOutputFilterByType with non-content-level filters.
68 PR58856 [Micha Lenk <micha lenk.info>]
70 *) mod_cache: Consider Cache-Control: s-maxage in expiration
71 calculations. [Eric Covener]
73 *) mod_cache: Allow caching of responses with an Expires header
74 in the past that also has Cache-Control: max-age or s-maxage.
75 PR55156. [Eric Covener]
77 *) Added many log numbers to log statements that had none.
79 *) mod_session: Introduce SessionExpiryUpdateInterval which allows to
80 configure the session/cookie expiry's update interval. PR 57300.
81 [Paul Spangler <paul.spangler ni.com>]
83 *) core: Extend support for asynchronous write completion from the
84 network filter to any connection or request filter. [Graham Leggett]
86 *) mpm_event: Free memory earlier when shutting down processes.
89 *) mod_auth_digest: remove AuthDigestEnableQueryStringHack which is no
90 more documented since dec 2012 (r1415960). [Christophe Jaillet]
92 *) mod_charset_lite: On EBCDIC platforms, make sure mod_charset_lite runs
93 after other resource-level filters. [Eric Covener]
95 *) mod_dir: Responses that go through "FallbackResource" might appear to
96 hang due to unterminated chunked encoding. PR58292. [Eric Covener]
98 *) http: Don't remove the Content-Length of zero from a HEAD response if
99 it comes from an origin server, module or script. [Yann Ylavic]
101 *) http: Add support for RFC2324/RFC7168. [Graham Leggett]
103 *) mod_rewrite: Add support for starting External Rewriting Programs
104 as non-root user on UNIX systems by specifying username and group name
105 as third argument of RewriteMap directive. [Jan Kaluza]
107 *) mod_authn_core: Add expression support to AuthName and AuthType.
110 *) suexec: Filter out the HTTP_PROXY environment variable because it is
111 treated as alias for http_proxy by some programs. [Stefan Fritsch]
113 *) mod_proxy_http: Don't establish or reuse a backend connection before pre-
114 fetching the request body, so to minimize the delay between it is supposed
115 to be alive and the first bytes sent: this is a best effort to prevent the
116 backend from closing because of idle or keepalive timeout in the meantime.
117 Also, handle a new "proxy-flushall" environment variable which allows to
118 flush any forwarded body data immediately. PR 56541+37920. [Yann Ylavic]
120 *) core: Define and UnDefine are no longer permitted in
121 directory context. Previously they would always be evaulated
122 as the configuration was read without regard for the directory
123 context. [Eric Covener]
125 *) config: For directives that do not expect any arguments, enforce
126 that none are specified in the configuration file.
127 [Joachim Zobel <jzobel heute-morgen.de>, Eric Covener]
129 *) mod_rewrite: Improve 'bad flag delimeters' startup error by showing
130 how the input was tokenized. PR 56528. [Edward Lu <Chaosed0 gmail.com>]
132 *) mod_proxy: Don't put non balancer-member workers in error state by
133 default for connection or 500/503 errors, and honor status=+I for
134 any error. PR 48388. [Yann Ylavic]
136 *) mod_socache_memcache: Pass expiration time through to memcached. PR 55445.
137 [Faidon Liambotis <paravoid debian.org>, Joe Orton]
139 *) ap_expr: Add filemod function for checking file modification dates
142 *) mod_authnz_ldap: Resolve crashes with LDAP authz and non-LDAP authn since
143 r1608202. [Eric Covener]
145 *) apreq: Content-Length header should be always interpreted as a decimal.
146 Leading 0 could be erroneously considered as an octal value. PR 56598.
147 [Chris Card <ctcard hotmail com>]
149 *) mod_proxy: Now allow for 191 character worker names, with non-fatal
150 errors if name is truncated. PR53218. [Jim Jagielski]
152 *) mod_ssl: Add optional function "ssl_get_tls_cb" to allow support
153 for channel bindings. [Simo Sorce <simo redhat.com>]
155 *) mod_proxy_wstunnel: Concurrent websockets messages could be
156 lost or delayed with ProxyWebsocketAsync enabled.
157 [Edward Lu <Chaosed0 gmail.com>]
159 *) core, mod_info: Add compiled and loaded PCRE versions to version
160 number display. [Rainer Jung]
162 *) mod_authnz_ldap: Return LDAP connections to the pool before the handler
163 is run, instead of waiting until the end of the request. [Eric Covener]
165 *) mod_proxy_html: support automatic detection of doctype and processing
166 of FPIs. PR56285 [Micha Lenk <micha lenk info>, Nick Kew]
168 *) mod_proxy_html: skip documents shorter than 4 bytes
169 PR 56286 [Micha Lenk <micha lenk info>]
171 *) mod_proxy_fdpass: Fix computation of the size of 'struct sockaddr_un'
172 when passed to 'connect()'.
173 [Graham Dumpleton <grahamd apache org>]
175 *) core: Add ap_mpm_resume_suspended() API to allow a suspended connection
177 [Artem <artemciy gmail.com>, Edward Lu <Chaosed0 gmail.com>]
179 *) core: Add ap_mpm_register_socket_callback_timeout() API. [Eric Covener]
181 *) mod_proxy_wstunnel: Honor ProxyWebsocketIdleTimeout in asynchronous
182 processing mode. [Eric Covener]
184 *) mod_authnz_ldap: Fail explicitly when the filter is too long. Remove
185 unnecessary apr_pstrdup() and strlen(). [Graham Leggett]
187 *) Add the ldap-search option to mod_authnz_ldap, allowing authorization
188 to be based on arbitrary expressions that do not include the username.
191 *) Add the ldap function to the expression API, allowing LDAP filters and
192 distinguished names based on expressions to be escaped correctly to
193 guard against LDAP injection. [Graham Leggett]
195 *) Add module mod_ssl_ct, which provides an implementation of Certificate
196 Transparency (RFC 6962) for httpd. [Jeff Trawick]
198 *) mod_proxy_wstunnel: Avoid sending error responses down an upgraded
199 websockets connection as it is being close down. [Eric Covener]
201 *) mod_proxy_wstunnel: Allow the administrator to cap the amount
202 of time a synchronous websockets connection stays idle with
203 ProxyWebsocketIdleTimeout. [Eric Covener]
205 *) mod_proxy_wstunnel: Change to opt-in for asynchronous support, adding
206 directives ProxyWebsocketAsync and ProxyWebsocketAsyncDelay.
209 *) mod_proxy_wstunnel: Stop leaking websockets backend connections under
210 event MPM (trunk-only). [Eric Covener]
212 *) mod_proxy_http: Add detach_backend hook (potentially usable
213 in other proxy scheme handlers). [Jeff Trawick]
215 *) mod_deflate: Add DeflateAlterETag to control how the ETag
216 is modified. The 'NoChange' parameter mimics 2.2.x behavior.
217 PR 45023, PR 39727. [Eric Covener]
219 *) mod_rewrite: Add 'BNF' (backreferences-no-plus) flag to RewriteRule to
220 allow spaces in backreferences to be encoded as %20 instead of '+'.
223 *) mod_rewrite: Support an optional list of characters to escape in the
224 argument for the 'B' (escape backreferences) flag. [Eric Covener]
226 *) mod_dir: Default to 2.2-like behavior and skip execution when method is
227 neither GET nor POST, such as for DAV requests. PR 54914. [Chris Darroch]
229 *) mod_rewrite: Rename the handler that does per-directory internal
230 redirects to "rewrite-redirect-handler" from "redirect-handler" so
231 it is less ambiguous and less likely to be reused. [Eric Covener]
233 *) mod_rewrite: Protect against looping with the [N] flag by enforcing a
234 default limit of 10000 iterations, and allowing each rule to change its
235 limit. [Eric Covener]
237 *) mod_ssl: Fix config merging of SSLOCSPEnable and SSLOCSPOverrideResponder.
240 *) Add HttpContentLengthHeadZero and HttpExpectStrict directives.
241 [Yehuda Sadeh <yehuda inktank com>, Justin Erenkrantz]
243 *) mod_ssl: Add -t -DDUMP_CA_CERTS option which dumps the filenames of all
244 configured SSL CA certificates to stdout the same way as DUMP_CERTS does.
247 *) mod_ssl: Don't flush when an EOS is received. Prepares mod_ssl
248 to support write completion. [Graham Leggett]
250 *) core: Add parse_errorlog_arg callback to ap_errorlog_provider
251 to allow providers to check the ErrorLog argument. [Jan Kaluza]
253 *) mod_cgid: Use the servers Timeout for each read from a CGI script,
254 allow override with new CGIDRequestTimeout directive. PR43494
255 [Eric Covener, Toshikuni Fukaya <toshikuni-fukaya cybozu co jp>]
257 *) core: ensure any abnormal exit is reported to stderr if it's a tty.
260 *) mod_lua: Let the Inter-VM get/set functions work with a global
261 shared memory pool instead of a per-process pool. [Daniel Gruno]
263 *) ldap: Support ldaps when using the Microsoft LDAP SDK.
264 PR 54626. [Jean-Frederic Clere]
266 *) mod_authnz_ldap: Change default value of AuthLDAPMaxSubGroupDepth to 0
267 to avoid performance problems when subgroups aren't in use. [Eric Covener]
269 *) mod_syslog: New module implementing syslog ap_error_log provider.
270 Previously, this code was part of core, now it's in separate module.
273 *) core: Add ap_errorlog_provider to make ErrorLog logging modular. Move
274 syslog support from core to new mod_syslog. [Jan Kaluza]
276 *) mod_status, mod_echo: Fix the display of client addresses.
277 They were truncated to 31 characters which is not enough for IPv6 addresses.
278 PR 54848 [Bernhard Schmidt <berni birkenwald de>]
280 *) mod_unique_id: Use output of the PRNG rather than IP address and
281 pid, avoiding sleep() call and possible DNS issues at startup,
282 plus improving randomness for IPv6-only hosts.
283 [Jan Kaluza <jkaluza redhat.com>]
285 *) mod_file_cache: mod_file_cache should be able to serve files that
286 haven't had a Content-Type set via e.g. mod_mime. [Eric Covener]
288 *) core: merge AllowEncodedSlashes from the base configuration into
289 virtual hosts. [Eric Covener]
291 *) AIX: Install DSO's with "cp" instead of "install" in instdso.sh
294 *) mod_ldap: Don't keep retrying if a new LDAP connection times out.
297 *) mod_deflate: permit compilation of mod_deflate against a zlib that has
298 been configured with -D Z_PREFIX, which redefines the token "deflate".
301 *) mod_auth_digest: Use the secret when generating nonces in all cases and
302 not only when AuthName is used in .htaccess files (this change may cause
303 problems if used with round robin load balancers). Don't regenerate the
304 secret on graceful restarts. PR 54637 [Stefan Fritsch]
306 *) core: Remove apr_brigade_flatten(), buffering and duplicated code
307 from the HTTP_IN filter, parse chunks in a single pass with zero copy.
308 Reduce memory usage by 48 bytes per request. [Graham Leggett]
310 *) core: Stop the HTTP_IN filter from attempting to write error buckets
311 to the output filters, which is bogus in the proxy case. Create a
312 clean mapping from APR codes to HTTP status codes, and use it where
313 needed. [Graham Leggett]
315 *) mod_proxy: Ensure network errors detected by the proxy are returned as
316 504 Gateway Timout as opposed to 502 Bad Gateway, in order to be
317 compliant with RFC2616 14.9.4 Cache Revalidation and Reload Controls.
319 *) mod_dav: mod_dav overrides dav_fs response on PUT failure. PR 35981
320 [Basant Kumar Kukreja <basant.kukreja sun.com>, Alejandro Alvarez
321 <alejandro.alvarez.ayllon cern.ch>]
323 *) mod_ldap: LDAP connections used for authentication were not respecting
324 LDAPConnectionPoolTimeout. PR 54587
326 *) core: ap_rgetline_core now pulls from r->proto_input_filters.
328 *) mod_proxy_html: process parsed comments immediately.
329 Fixes bug where parsed comments may be lost. [Nick Kew]
331 *) mod_proxy_html: introduce doctype for HTML 5 [Nick Kew]
333 *) mod_proxy_html: fix typo-bug processing "strict" vs "transitional"
334 HTML/XHTML [Nick Kew]
336 *) core: Add option to add valgrind support. Use it to reduce false positive
337 warnings in mod_ssl. [Stefan Fritsch]
339 *) mod_authn_file, mod_authn_dbd, mod_authn_dbm, mod_authn_socache:
340 Cache the result of the most recent password hash verification for every
341 keep-alive connection. This saves some expensive calculations.
344 *) http: Remove support for Request-Range header sent by Navigator 2-3 and
345 MSIE 3. [Stefan Fritsch]
347 *) core, http: Extend HttpProtocol with an option to enforce stricter HTTP
348 conformance or to only log the found problems. [Stefan Fritsch]
350 *) core: Correctly parse an IPv6 literal host specification in an absolute
351 URL in the request line. [Stefan Fritsch]
355 *) core: Add LogLevelOverride directive that allows to override the
356 loglevel for clients from certain IPs. This also works for things
357 like the SSL handshake where <If> LogLevel ... </If> is evaluated
358 too late. [Stefan Fritsch]
360 *) core: Add new directive Warning to issue warnings from a configuration
361 file. Both Warning and Error now generate a timestamped log message.
364 *) ap_expr: Add SERVER_PROTOCOL_VERSION, ..._MAJOR, and ..._MINOR
365 variables. [Stefan Fritsch]
367 *) core: New directive RegisterHttpMethod for registering non-standard
368 HTTP methods. [Stefan Fritsch]
370 *) core: New directive HttpProtocol which allows to disable HTTP/0.9
371 support. [Stefan Fritsch]
373 *) mod_allowhandlers: New module to forbid specific handlers for specific
374 directories. [Stefan Fritsch]
376 *) mod_systemd: New module, for integration with systemd on Linux.
377 [Jan Kaluza <jkaluza redhat.com>]
379 *) WinNT MPM: Store pid and generation for each thread in scoreboard
380 to allow tracking of threads from exiting children via mod_status
381 or other such mechanisms. [Jeff Trawick]
383 *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR:
384 - APIs: ap_log_pid(), ap_remove_pid, ap_read_pid()
385 - mod_cache: thundering herd lock directory
386 - mod_lbmethod_heartbeat, mod_heartmonitor: heartbeat storage file
387 - mod_ldap: shared memory cache
388 - mod_socache_shmcb, mod_socache_dbm: shared memory or dbm for cache
391 *) suexec: Add --enable-suexec-capabilites support on Linux, to use
392 setuid/setgid capability bits rather than a setuid root binary.
395 *) suexec: Add support for logging to syslog as an alternative to logging
396 to a file; configure --without-suexec-logfile --with-suexec-syslog.
399 *) mod_ssl: Add support for TLS Next Protocol Negotiation. PR 52210.
400 [Matthew Steele <mdsteele google.com>]
402 *) cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will
403 be compiled by the build compiler instead of the host compiler.
404 Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected.
405 PR 51257. [Guenter Knauf]
407 *) core: In maintainer mode, replace apr_palloc with a version that
408 initializes the allocated memory with non-zero values, except if
409 AP_DEBUG_NO_ALLOC_POISON is defined. [Stefan Fritsch]
411 *) mod_policy: Add a new testing module to help server administrators
412 enforce a configurable level of protocol compliance on their
413 servers and application servers behind theirs. [Graham Leggett]
415 *) mod_firehose: Add a new debugging module able to record traffic
416 passing through the server in such a way that connections and/or
417 requests be reconstructed and replayed. [Graham Leggett]
427 [Apache 2.5.0-dev includes those bug fixes and changes with the
428 Apache 2.4.xx tree as documented below, except as noted.]
430 Changes with Apache 2.4.x and later:
432 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?view=markup
434 Changes with Apache 2.2.x and later:
436 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup
438 Changes with Apache 2.0.x and later:
440 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup