2 Changes with Apache 2.5.0
4 *) mod_autoindex: Add IndexOptions UseOldDateFormat to allow the date
5 format from 2.2 in the Last Modified column. PR60846.
6 [Hank Ibell <hwibell gmail.com>]
8 *) mod_http2: fixed PR60869 by making h2 workers exit explicitly waking up
9 all threads to exit in a defined way. [Stefan Eissing]
11 *) Add <IfDirective> and <IfSection> directives. [Joe Orton]
13 *) mod_syslog: Support use of optional "tag" in syslog entries.
14 PR 60525. [Ben Rubson <ben.rubson gmail.com>, Jim Jagielski]
16 *) MPMs unix: Place signals handlers and helpers out of DSOs to avoid
17 a possible crash if a signal is caught during (graceful) restart.
18 PR 60487. [Yann Ylavic]
20 *) mod_cache: Fix a regression in 2.4.25 for the forward proxy case by
21 computing and using the same entity key according to when the cache
22 checks, loads and saves the request.
23 PR 60577. [Yann Ylavic]
25 *) mod_proxy_fcgi: Add ProxyFCGISetEnvIf to fixup CGI environment
26 variables just before invoking the FastCGI. [Eric Covener,
29 *) mod_proxy: Allow the per-request environment variable "no-proxy" to
30 be used as an alternative to ProxyPass /path !. This is primarily
31 to set exceptions for ProxyPass specified in <Location> context.
32 Use SetEnvIf, not SetEnv. [Eric Covener]
34 *) mod_ssl: work around leaks on (graceful) restart. [Yann Ylavic]
36 *) When using mod_status with the Event MPM, report the number of requests
37 associated with an active connection in the "ACC" field. Previously
38 zero was always reported with this MPM. PR60647. [Eric Covener]
40 *) core: %{DOCUMENT_URI} used in nested SSI expressions should point to the
41 URI originally requsted by the user, not the nested documents URI. This
42 restores the behavior of this variable to match the "legacy" SSI parser.
43 PR60624. [Hank Ibell <hwibell gmail.com>]
45 *) mod_proxy_hcheck: Don't validate timed out responses. [Yann Ylavic]
47 *) mod_proxy_hcheck: Ensure thread-safety when concurrent healthchecks are
48 in use (ProxyHCTPsize > 0). PR 60071. [Yann Ylavic, Jim Jagielski]
50 *) mod_proxy_fcgi: Return to 2.4.20-and-earlier behavior of leaving
51 a "proxy:fcgi://" prefix in the SCRIPT_FILENAME environment variable by
52 default. Add ProxyFCGIBackendType to allow the type of backend to be
53 specified so these kinds of fixups can be restored without impacting
54 FPM. PR60576 [Eric Covener, Jim Jagielski]
56 *) core: EBCDIC fixes for interim responses with additional headers.
59 *) mod_remoteip: Add support for PROXY protocol (code donated by Cloudzilla).
60 Add ability for PROXY protocol processing to be optional to donated code.
61 See also: http://www.haproxy.org/download/1.5/doc/proxy-protocol.txt
62 [Cloudzilla/roadrunner2@GitHub, Jim Jagielski, Daniel Ruggeri]
64 *) mod_rewrite: When a substitution is a fully qualified URL, and the
65 scheme/host/port matches the current virtual host, stop interpreting the
66 path component as a local path just because the first component of the
67 path exists in the filesystem. Adds RewriteOption "LegacyPrefixDocRoot"
68 to revert to previous behavior. PR60009.
69 [Hank Ibell <hwibell gmail.com>]
71 *) core: Add %{REMOTE_PORT} to the expression parser. PR59938
72 [Hank Ibell <hwibell gmail.com>]
74 *) mod_remoteip: When overriding the useragent address from X-Forwarded-For,
75 zero out what had been initialized as the connection-level port. PR59931.
76 [Hank Ibell <hwibell gmail.com>]
78 *) mod_proxy_wstunnel: Reliably run before mod_proxy_http.
81 *) mod_proxy_protocol: Add server-side, front-end support for PROXY PROTOCOL
82 (http://blog.haproxy.com/haproxy/proxy-protocol/). [roadrunner2]
84 *) mod_proxy_fcgi: Return HTTP 504 rather than 503 in case of proxy timeout.
87 *) http: Allow unknown response status' lines returned in the form of
88 "HTTP/x.x xxx Status xxx". [Yann Ylavic]
90 *) core: Add <IfFile> configuration section to allow any file on disk to be
91 used as a conditional. [Edward Lu, Eric Covener]
93 *) event: Avoid listener periodic wake ups by using the pollset wake-ability
94 when available. PR 57399. [Yann Ylavic, Luca Toscano]
96 *) mod_brotli: Add a new module for dynamic Brotli (RFC 7932) compression.
99 *) core: Permit unencoded ';' characters to appear in proxy requests and
100 Location: response headers. Corresponds to modern browser behavior.
103 *) mod_crypto: Add the all purpose crypto filters with support for HLS.
106 *) core: Drop an invalid Last-Modified header value coming
107 from a FCGI/CGI script instead of replacing it with Unix epoch.
108 Warn the users about Last-Modified header value replacements
109 and violations of the RFC.
110 [Yann Ylavic, Luca Toscano, William Rowe, Jacob Champion]
112 *) mod_dav: Allow other modules to become providers and add ACLs
114 [Jari Urpalainen <jari.urpalainen nokia.com>, Graham Leggett]
116 *) mod_dav: Add dav_begin_multistatus, dav_send_one_response,
117 dav_finish_multistatus, dav_send_multistatus, dav_handle_err,
118 dav_failed_proppatch, dav_success_proppatch to mod_dav.h.
119 [Jari Urpalainen <jari.urpalainen nokia.com>, Graham Leggett]
121 *) mod_proxy, mod_ssl: Handle SSLProxy* directives in <Proxy> sections,
122 allowing per backend TLS configuration. [Yann Ylavic]
124 *) core: explicitly exclude 'h2' from protocols announced via an Upgrade:
125 header as commanded by http-wg. [Stefan Eissing]
127 *) mod_proxy_ajp: Add "secret" parameter to proxy workers to implement legacy
128 AJP13 authentication. PR 53098. [Dmitry A. Bakshaev <dab1818 gmail com>]
130 *) mpm: Generalise the ap_mpm_register_socket functions to accept pipes
131 or sockets. [Graham Leggett]
133 *) core: Extend support for setting aside data from the network input filter
134 to any connection or request input filter. [Graham Leggett]
136 *) core: Split ap_create_request() from ap_read_request(). [Graham Leggett]
138 *) mod_auth_digest: Fix compatibility with expression-based Authname. PR59039.
141 *) mpm: Add a complete_connection hook that confirms whether an MPM is allowed
142 to leave the WRITE_COMPLETION phase. Move filter code out of the MPMs.
145 *) core: Added support for HTTP code 451. PR58985.
146 [Yehuda Katz <yehuda ymkatz.net>, Jim Jagielski]
148 *) mod_ssl: Add support for OpenSSL 1.1.0. [Rainer Jung]
150 *) mod_filter: Fix AddOutputFilterByType with non-content-level filters.
151 PR58856 [Micha Lenk <micha lenk.info>]
153 *) mod_cache: Consider Cache-Control: s-maxage in expiration
154 calculations. [Eric Covener]
156 *) mod_cache: Allow caching of responses with an Expires header
157 in the past that also has Cache-Control: max-age or s-maxage.
158 PR55156. [Eric Covener]
160 *) Added many log numbers to log statements that had none.
162 *) mod_session: Introduce SessionExpiryUpdateInterval which allows to
163 configure the session/cookie expiry's update interval. PR 57300.
164 [Paul Spangler <paul.spangler ni.com>]
166 *) core: Extend support for asynchronous write completion from the
167 network filter to any connection or request filter. [Graham Leggett]
169 *) mod_auth_digest: remove AuthDigestEnableQueryStringHack which is no
170 more documented since dec 2012 (r1415960). [Christophe Jaillet]
172 *) mod_charset_lite: On EBCDIC platforms, make sure mod_charset_lite runs
173 after other resource-level filters. [Eric Covener]
175 *) http: Don't remove the Content-Length of zero from a HEAD response if
176 it comes from an origin server, module or script. [Yann Ylavic]
178 *) http: Add support for RFC2324/RFC7168. [Graham Leggett]
180 *) mod_rewrite: Add support for starting External Rewriting Programs
181 as non-root user on UNIX systems by specifying username and group name
182 as third argument of RewriteMap directive. [Jan Kaluza]
184 *) mod_authn_core: Add expression support to AuthName and AuthType.
187 *) suexec: Filter out the HTTP_PROXY environment variable because it is
188 treated as alias for http_proxy by some programs. [Stefan Fritsch]
190 *) mod_proxy_http: Don't establish or reuse a backend connection before pre-
191 fetching the request body, so to minimize the delay between it is supposed
192 to be alive and the first bytes sent: this is a best effort to prevent the
193 backend from closing because of idle or keepalive timeout in the meantime.
194 Also, handle a new "proxy-flushall" environment variable which allows to
195 flush any forwarded body data immediately. PR 56541+37920. [Yann Ylavic]
197 *) core: Define and UnDefine are no longer permitted in
198 directory context. Previously they would always be evaulated
199 as the configuration was read without regard for the directory
200 context. [Eric Covener]
202 *) config: For directives that do not expect any arguments, enforce
203 that none are specified in the configuration file.
204 [Joachim Zobel <jzobel heute-morgen.de>, Eric Covener]
206 *) mod_rewrite: Improve 'bad flag delimeters' startup error by showing
207 how the input was tokenized. PR 56528. [Edward Lu <Chaosed0 gmail.com>]
209 *) mod_proxy: Don't put non balancer-member workers in error state by
210 default for connection or 500/503 errors, and honor status=+I for
211 any error. PR 48388. [Yann Ylavic]
213 *) mod_socache_memcache: Pass expiration time through to memcached. PR 55445.
214 [Faidon Liambotis <paravoid debian.org>, Joe Orton]
216 *) ap_expr: Add filemod function for checking file modification dates
219 *) mod_authnz_ldap: Resolve crashes with LDAP authz and non-LDAP authn since
220 r1608202. [Eric Covener]
222 *) apreq: Content-Length header should be always interpreted as a decimal.
223 Leading 0 could be erroneously considered as an octal value. PR 56598.
224 [Chris Card <ctcard hotmail com>]
226 *) mod_proxy: Now allow for 191 character worker names, with non-fatal
227 errors if name is truncated. PR53218. [Jim Jagielski]
229 *) mod_ssl: Add optional function "ssl_get_tls_cb" to allow support
230 for channel bindings. [Simo Sorce <simo redhat.com>]
232 *) mod_proxy_wstunnel: Concurrent websockets messages could be
233 lost or delayed with ProxyWebsocketAsync enabled.
234 [Edward Lu <Chaosed0 gmail.com>]
236 *) core, mod_info: Add compiled and loaded PCRE versions to version
237 number display. [Rainer Jung]
239 *) mod_authnz_ldap: Return LDAP connections to the pool before the handler
240 is run, instead of waiting until the end of the request. [Eric Covener]
242 *) mod_proxy_html: support automatic detection of doctype and processing
243 of FPIs. PR56285 [Micha Lenk <micha lenk info>, Nick Kew]
245 *) mod_proxy_html: skip documents shorter than 4 bytes
246 PR 56286 [Micha Lenk <micha lenk info>]
248 *) mod_proxy_fdpass: Fix computation of the size of 'struct sockaddr_un'
249 when passed to 'connect()'.
250 [Graham Dumpleton <grahamd apache org>]
252 *) core: Add ap_mpm_resume_suspended() API to allow a suspended connection
254 [Artem <artemciy gmail.com>, Edward Lu <Chaosed0 gmail.com>]
256 *) core: Add ap_mpm_register_socket_callback_timeout() API. [Eric Covener]
258 *) mod_proxy_wstunnel: Honor ProxyWebsocketIdleTimeout in asynchronous
259 processing mode. [Eric Covener]
261 *) mod_authnz_ldap: Fail explicitly when the filter is too long. Remove
262 unnecessary apr_pstrdup() and strlen(). [Graham Leggett]
264 *) Add the ldap-search option to mod_authnz_ldap, allowing authorization
265 to be based on arbitrary expressions that do not include the username.
268 *) Add the ldap function to the expression API, allowing LDAP filters and
269 distinguished names based on expressions to be escaped correctly to
270 guard against LDAP injection. [Graham Leggett]
272 *) Add module mod_ssl_ct, which provides an implementation of Certificate
273 Transparency (RFC 6962) for httpd. [Jeff Trawick]
275 *) mod_proxy_wstunnel: Avoid sending error responses down an upgraded
276 websockets connection as it is being close down. [Eric Covener]
278 *) mod_proxy_wstunnel: Allow the administrator to cap the amount
279 of time a synchronous websockets connection stays idle with
280 ProxyWebsocketIdleTimeout. [Eric Covener]
282 *) mod_proxy_wstunnel: Change to opt-in for asynchronous support, adding
283 directives ProxyWebsocketAsync and ProxyWebsocketAsyncDelay.
286 *) mod_proxy_wstunnel: Stop leaking websockets backend connections under
287 event MPM (trunk-only). [Eric Covener]
289 *) mod_proxy_http: Add detach_backend hook (potentially usable
290 in other proxy scheme handlers). [Jeff Trawick]
292 *) mod_deflate: Add DeflateAlterETag to control how the ETag
293 is modified. The 'NoChange' parameter mimics 2.2.x behavior.
294 PR 45023, PR 39727. [Eric Covener]
296 *) mod_rewrite: Add 'BNF' (backreferences-no-plus) flag to RewriteRule to
297 allow spaces in backreferences to be encoded as %20 instead of '+'.
300 *) mod_rewrite: Support an optional list of characters to escape in the
301 argument for the 'B' (escape backreferences) flag. [Eric Covener]
303 *) mod_dir: Default to 2.2-like behavior and skip execution when method is
304 neither GET nor POST, such as for DAV requests. PR 54914. [Chris Darroch]
306 *) mod_rewrite: Rename the handler that does per-directory internal
307 redirects to "rewrite-redirect-handler" from "redirect-handler" so
308 it is less ambiguous and less likely to be reused. [Eric Covener]
310 *) mod_rewrite: Protect against looping with the [N] flag by enforcing a
311 default limit of 10000 iterations, and allowing each rule to change its
312 limit. [Eric Covener]
314 *) mod_ssl: Fix config merging of SSLOCSPEnable and SSLOCSPOverrideResponder.
317 *) Add HttpContentLengthHeadZero and HttpExpectStrict directives.
318 [Yehuda Sadeh <yehuda inktank com>, Justin Erenkrantz]
320 *) mod_ssl: Add -t -DDUMP_CA_CERTS option which dumps the filenames of all
321 configured SSL CA certificates to stdout the same way as DUMP_CERTS does.
324 *) mod_ssl: Don't flush when an EOS is received. Prepares mod_ssl
325 to support write completion. [Graham Leggett]
327 *) core: Add parse_errorlog_arg callback to ap_errorlog_provider
328 to allow providers to check the ErrorLog argument. [Jan Kaluza]
330 *) mod_cgid: Use the servers Timeout for each read from a CGI script,
331 allow override with new CGIDRequestTimeout directive. PR43494
332 [Eric Covener, Toshikuni Fukaya <toshikuni-fukaya cybozu co jp>]
334 *) core: ensure any abnormal exit is reported to stderr if it's a tty.
337 *) mod_lua: Let the Inter-VM get/set functions work with a global
338 shared memory pool instead of a per-process pool. [Daniel Gruno]
340 *) ldap: Support ldaps when using the Microsoft LDAP SDK.
341 PR 54626. [Jean-Frederic Clere]
343 *) mod_authnz_ldap: Change default value of AuthLDAPMaxSubGroupDepth to 0
344 to avoid performance problems when subgroups aren't in use. [Eric Covener]
346 *) mod_syslog: New module implementing syslog ap_error_log provider.
347 Previously, this code was part of core, now it's in separate module.
350 *) core: Add ap_errorlog_provider to make ErrorLog logging modular. Move
351 syslog support from core to new mod_syslog. [Jan Kaluza]
353 *) mod_status, mod_echo: Fix the display of client addresses.
354 They were truncated to 31 characters which is not enough for IPv6 addresses.
355 PR 54848 [Bernhard Schmidt <berni birkenwald de>]
357 *) mod_unique_id: Use output of the PRNG rather than IP address and
358 pid, avoiding sleep() call and possible DNS issues at startup,
359 plus improving randomness for IPv6-only hosts.
360 [Jan Kaluza <jkaluza redhat.com>]
362 *) mod_file_cache: mod_file_cache should be able to serve files that
363 haven't had a Content-Type set via e.g. mod_mime. [Eric Covener]
365 *) core: merge AllowEncodedSlashes from the base configuration into
366 virtual hosts. [Eric Covener]
368 *) AIX: Install DSO's with "cp" instead of "install" in instdso.sh
371 *) mod_ldap: Don't keep retrying if a new LDAP connection times out.
374 *) mod_deflate: permit compilation of mod_deflate against a zlib that has
375 been configured with -D Z_PREFIX, which redefines the token "deflate".
378 *) mod_auth_digest: Use the secret when generating nonces in all cases and
379 not only when AuthName is used in .htaccess files (this change may cause
380 problems if used with round robin load balancers). Don't regenerate the
381 secret on graceful restarts. PR 54637 [Stefan Fritsch]
383 *) core: Remove apr_brigade_flatten(), buffering and duplicated code
384 from the HTTP_IN filter, parse chunks in a single pass with zero copy.
385 Reduce memory usage by 48 bytes per request. [Graham Leggett]
387 *) core: Stop the HTTP_IN filter from attempting to write error buckets
388 to the output filters, which is bogus in the proxy case. Create a
389 clean mapping from APR codes to HTTP status codes, and use it where
390 needed. [Graham Leggett]
392 *) mod_proxy: Ensure network errors detected by the proxy are returned as
393 504 Gateway Timout as opposed to 502 Bad Gateway, in order to be
394 compliant with RFC2616 14.9.4 Cache Revalidation and Reload Controls.
396 *) mod_dav: mod_dav overrides dav_fs response on PUT failure. PR 35981
397 [Basant Kumar Kukreja <basant.kukreja sun.com>, Alejandro Alvarez
398 <alejandro.alvarez.ayllon cern.ch>]
400 *) mod_ldap: LDAP connections used for authentication were not respecting
401 LDAPConnectionPoolTimeout. PR 54587
403 *) core: ap_rgetline_core now pulls from r->proto_input_filters.
405 *) mod_proxy_html: process parsed comments immediately.
406 Fixes bug where parsed comments may be lost. [Nick Kew]
408 *) mod_proxy_html: introduce doctype for HTML 5 [Nick Kew]
410 *) mod_proxy_html: fix typo-bug processing "strict" vs "transitional"
411 HTML/XHTML [Nick Kew]
413 *) core: Add option to add valgrind support. Use it to reduce false positive
414 warnings in mod_ssl. [Stefan Fritsch]
416 *) mod_authn_file, mod_authn_dbd, mod_authn_dbm, mod_authn_socache:
417 Cache the result of the most recent password hash verification for every
418 keep-alive connection. This saves some expensive calculations.
421 *) http: Remove support for Request-Range header sent by Navigator 2-3 and
422 MSIE 3. [Stefan Fritsch]
424 *) core, http: Extend HttpProtocol with an option to enforce stricter HTTP
425 conformance or to only log the found problems. [Stefan Fritsch]
427 *) core: Correctly parse an IPv6 literal host specification in an absolute
428 URL in the request line. [Stefan Fritsch]
432 *) core: Add LogLevelOverride directive that allows to override the
433 loglevel for clients from certain IPs. This also works for things
434 like the SSL handshake where <If> LogLevel ... </If> is evaluated
435 too late. [Stefan Fritsch]
437 *) core: Add new directive Warning to issue warnings from a configuration
438 file. Both Warning and Error now generate a timestamped log message.
441 *) ap_expr: Add SERVER_PROTOCOL_VERSION, ..._MAJOR, and ..._MINOR
442 variables. [Stefan Fritsch]
444 *) core: New directive RegisterHttpMethod for registering non-standard
445 HTTP methods. [Stefan Fritsch]
447 *) core: New directive HttpProtocol which allows to disable HTTP/0.9
448 support. [Stefan Fritsch]
450 *) mod_allowhandlers: New module to forbid specific handlers for specific
451 directories. [Stefan Fritsch]
453 *) mod_systemd: New module, for integration with systemd on Linux.
454 [Jan Kaluza <jkaluza redhat.com>]
456 *) WinNT MPM: Store pid and generation for each thread in scoreboard
457 to allow tracking of threads from exiting children via mod_status
458 or other such mechanisms. [Jeff Trawick]
460 *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR:
461 - APIs: ap_log_pid(), ap_remove_pid, ap_read_pid()
462 - mod_cache: thundering herd lock directory
463 - mod_lbmethod_heartbeat, mod_heartmonitor: heartbeat storage file
464 - mod_ldap: shared memory cache
465 - mod_socache_shmcb, mod_socache_dbm: shared memory or dbm for cache
468 *) suexec: Add --enable-suexec-capabilites support on Linux, to use
469 setuid/setgid capability bits rather than a setuid root binary.
472 *) suexec: Add support for logging to syslog as an alternative to logging
473 to a file; configure --without-suexec-logfile --with-suexec-syslog.
476 *) mod_ssl: Add support for TLS Next Protocol Negotiation. PR 52210.
477 [Matthew Steele <mdsteele google.com>]
479 *) cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will
480 be compiled by the build compiler instead of the host compiler.
481 Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected.
482 PR 51257. [Guenter Knauf]
484 *) core: In maintainer mode, replace apr_palloc with a version that
485 initializes the allocated memory with non-zero values, except if
486 AP_DEBUG_NO_ALLOC_POISON is defined. [Stefan Fritsch]
488 *) mod_policy: Add a new testing module to help server administrators
489 enforce a configurable level of protocol compliance on their
490 servers and application servers behind theirs. [Graham Leggett]
492 *) mod_firehose: Add a new debugging module able to record traffic
493 passing through the server in such a way that connections and/or
494 requests be reconstructed and replayed. [Graham Leggett]
504 [Apache 2.5.0-dev includes those bug fixes and changes with the
505 Apache 2.4.xx tree as documented below, except as noted.]
507 Changes with Apache 2.4.x and later:
509 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?view=markup
511 Changes with Apache 2.2.x and later:
513 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup
515 Changes with Apache 2.0.x and later:
517 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup