2 Changes with Apache 2.5.1
4 *) mod_dav: Fix an unlikely time-window where some incorrect data could be returned
5 from a PROPFIND request [Ruediger Pluem]
7 *) mod_ssl: Fix mod_authz provider for "require ssl" directive to check correctly
8 on HTTP/2 connections. Fixes PR 62654. [Stefan Eissing]
10 *) mod_ssl: clear *SSL errors before loading certificates and checking
11 afterwards. Otherwise errors are reported when other SSL using modules
12 are in play. Fixes PR 62880. [Michael Kaufmann]
14 *) mod_ssl: Correctly merge configurations that have client certificates set
15 by SSLProxyMachineCertificate{File|Path}. [Ruediger Pluem]
17 *) core: Ensure that aborted connections are logged as such. PR 62823
18 [Arnaud Grandville <contact@grandville.net>]
20 *) mpm_event: Stop issuing AH00484 "server reached MaxRequestWorkers..." when
21 there are still idle threads available. When there are less idle threads than
22 MinSpareThreads, issue new one-time message AH10159. Matches worker MPM.
25 *) mod_http2: adding defensive code for stream EOS handling, in case the request handler
26 missed to signal it the normal way (eos buckets). Addresses github issues
27 https://github.com/icing/mod_h2/issues/164, https://github.com/icing/mod_h2/issues/167
28 and https://github.com/icing/mod_h2/issues/170. [Stefan Eissing]
30 *) mod_proxy_scgi, mod_proxy_uwsgi: improve error handling when sending the
31 body of the response. [Jim Jagielski]
33 *) mod_session_cookie: avoid duplicate Set-Cookie header in the response.
34 [Emmanuel Dreyfus <manu@netbsd.org>, Luca Toscano]
36 *) mod_dav_fs: Set a default DAVLockDB within the state directory.
39 *) core: Add DefaultStateDir and layout-specific state directory
40 created at "make install". [Joe Orton]
42 *) mod_ssl: Fix a regression that the configuration settings for verify mode
43 and verify depth were taken from the frontend connection in case of
44 connections by the proxy to the backend. PR 62769. [Ruediger Pluem]
46 *) ab: Add client certificate support. [Graham Leggett]
48 *) mod_proxy_hcheck: Fix issues with TCP health checks. PR 61499
49 [Dominik Stillhard <dominik.stillhard united-security-providers.ch>]
51 *) mod_http2: connection IO event handling reworked. Instead of reacting on
52 incoming bytes, the state machine now acts on incoming frames that are
53 affecting it. This reduces state transitions. [Stefan Eissing]
55 *) MPMs: Initialize all runtime/asynchronous objects on a dedicated pool and
56 before signals handling to avoid lifetime issues on restart or shutdown.
57 PR 62658. [Yann Ylavic]
59 *) core: Add StrictHostCheck to allow ucnonfigured hostnames to be
60 rejected. [Eric Covener]
62 *) mod_status: Cumulate CPU time of exited child processes in the
63 "cu" and "cs" values. Add CPU time of the parent process to the
67 *) mod_status: Add cumulated response duration time in milliseconds.
70 *) mod_status: Complete the data shown for async MPMs in "auto" mode.
71 Added number of processes, number of stopping processes and number
72 of busy and idle workers. [Rainer Jung]
74 *) mod_proxy: Improve the balancer member data shown in mod_status when
75 "ProxyStatus" is "On": add "busy" count and show byte counts in auto
76 mode always in units of kilobytes. [Rainer Jung]
78 *) mod_proxy: If ProxyPassReverse is used for reverse mapping of relative
79 redirects, subsequent ProxyPassReverse statements, whether they are
80 relative or absolute, may fail. PR 60408. [Peter Haworth <pmh1wheel gmail.com>]
82 *) mod_ratelimit: Don't interfere with "chunked" encoding, fixing regression
83 introduced in 2.4.34. PR 62568. [Yann Ylavic]
85 *) mod_proxy_http: forward 100-continue, and minimize race conditions when
86 reusing backend connections. PR 60330. [Yann Ylavic, Jean-Frederic Clere]
88 *) mod_proxy: Remove load order and link dependency between mod_lbmethod_*
89 modules and mod_proxy. PR 62557. [Ruediger Pluem, William Rowe]
91 *) mod_md: more robust handling of http-01 challenges and hands-off when module
92 should not be involved, e.g. challenge setup by another ACME client. [Stefan Eissing]
94 *) ru, zh-cn and zh-tw translations of errordocs have been added.
95 Contributed by Alexander Gaganashvili and CodeingBoy
97 *) mod_userdir: If several directories are given in a UserDir directive, only files
98 in the first existing one are checked. If the file is not found there, the
99 other possible directories are not checked. The doc clearly states that they
100 will be checked one by one, until a match is found or an external redirect is
104 *) mod_rewrite: Only create the global mutex used by "RewriteMap prg:" when
105 this type of map is present in the configuration. PR62311.
106 [Hank Ibell <hwibell gmail.com>]
108 *) mod_ldap: Abort on LDAP locking errors. [Eric Covener]
110 *) mod_ssl: Support loading certificates and private keys from the
111 PKCS#11 OpenSSL engine. [Anderson Sasaki <ansasaki redhat.com>,
114 *) mod_http2: adding an abort function to slave connections' pools, so out-of-memory
115 events lead to a control process abort, as on HTTP/1.x connections. [Stefan Eissing]
117 *) mod_http2: adding regular memory cleanup when transferring large response bodies. This
118 reduces memory footprint and avoids memory exhaustion when transferring large files
119 on 32-bit architectures. Fixes PR 62325. [Stefan Eissing]
121 *) http: LimitRequestBody applies to proxied requests. [Yann Ylavic]
123 *) mod_logio: Add LogIOTrackTTFU and %^FU logformat to log the time
124 difference between request start and last request body byte read (finished upload).
127 *) mod_ssl: add support for TLSv1.3 (tested with OpenSSL v1.1.1-pre4, other libs may
128 need more sugar). SSL(Proxy)CipherSuite now has an optional first parameter for the
129 protocol the ciphers are for.
130 Directive "SSLVerifyClient" now triggers certificate retrieval from the client (this
131 is not fully tested - but fails in similar fashion as in TLSv1.2 in my setups).
132 Verifying the client fails exactly the same for HTTP/2 connections for all SSL protocols,
133 as this would need to trigger the master connection thread - which we do not support
135 Renegotiation of ciphers is intentionally ignored for TLSv1.3 connections. "SSLCipherSuite"
136 does not allow to specify TLSv1.3 ciphers in a directory context (because it cannot work) and
137 TLSv1.2 or lower ciphers are not relevant, as cipher suites are completely separate.
138 This means there is a bit if a world split when simultaneously having TLSv1.2 and TLSv1.3
139 connections to the same server.
140 [Yann Ylavic, Stefan Eissing]
142 *) mod_ssl: proper checks for libressl 2.07/8 and its TLSv1_3 support, see PR 62236.
143 [Bernard Spil <brnrd@freebsd.org>]
145 *) mod_http2: on level trace2, log any unsuccessful HTTP/2 direct connection upgrade
146 with base64 encoding to unify its appearance in possible bug reports. [Stefan Eissing]
148 *) mod_cgi: Add CGIScriptTimeout to make mod_cgi's timeout per-directory and
149 independent of the core Timeout directive. PR 62229.
150 [Hank Ibell <hwibell gmail.com>]
152 *) mod_ssl: heavily simplified SSLPolicy. No more user defines, no propxy policies,
153 just the basic "modern", "intermediate" and "old" as specified by Mozilla security.
156 *) mod_md: fixes error in renew window calculation that may lead to mod_md running
157 watchdog in a tight loop until actual renewal becomes necessary. [Stefan Eissing]
159 *) mod_md: /.well-known/acme-challenge requests that cannot be answered for hostnames
160 outside the configured MDs are free to be answered by other handlers. This allows
161 co-existance between mod_md and other ACME clients on the same server (implements PR62189).
162 [Stefan Eissing, Arkadiusz Miskiewicz <arekm@maven.pl>]
164 *) core: Create a conn_config_t structure to hold an extendable core config rather
165 than consuming the whole pointer with the connection socket. [Graham Leggett]
167 *) core: adding AP_DECLARE for ap_parse_vhost_addrs() and minor bumb mmn. Resolves
168 building mod_ssl on Windows. [Stefan Eissing, Gregg Smith]
170 *) mod_http2: discourage gzip/brotli content encoding on http2-status responses as
171 they are inserted into the reponse when filters are already done. [Stefan Eissing]
173 *) core: adding defines to allow interworking with honggfuzz without
174 further patches. [Stefan Eissing, Robert Swiecki]
176 *) mod_headers: 'RequestHeader set|edit|edit_r Content-Type X' could
177 inadvertently modify the Content-Type _response_ header. Applies to
178 Content-Type only and likely to only affect static file responses.
181 *) mod_cgi: Improve AH01215 messages to make it more clear that the message is
182 the CGI scripts stderr output. PR 61980. [Hank Ibell <hwibell gmail.com>]
184 *) mod_headers: Allow 'Header unset Content-Type' to remove the Content-Type
185 header. PR 61983. [Hank Ibell <hwibell gmail.com>]
187 *) mod_md v1.1.8: new configuration directive "MDBaseServer on|off" to allow/inhibit
188 management of the base server domains outside VirtualHosts. By default, this is "off",
189 e.g. mod_md will not manage certificates or perform https: redirections on the
190 base server. [Stefan Eissing]
192 *) core: Add "AcceptErrorsNonFatal" to allow ECONNREFUSED, ECONNABORTED, and
193 ECONNRESET during the client accept() to not trigger graceful shutdown of
194 the child process. [Eric Covener]
197 - MDMustStaple was unable to create the necessary OpenSSL OBJ identifier on some platforms,
198 possibly because this fails if the OID is already configured in ```openssl.cnf```, see
199 [here](https://github.com/openssl/openssl/issues/2795).
200 - Two memory leaks in cert issuer and alt-names lookup eliminated by Yann Ylavic.
201 - Changing MDMustStaple triggers certificate renewal.
202 - More verbosity when *not* handing out certificates, e.g. mod_ssl asks, but mod_md has no
203 idea what it is talking about. Some people report misbehaviour here.
204 - Re-enabled support for md_get_credentials() function that was used in older mod_ssl
205 patch, so that people with old patched servers get a chance to upgrade.
206 [Stefan Eissing, Yann Ylavic]
208 *) mod_susbtitute: Allow expressions in the subtitution, prefixed with expr=
211 *) mod_md: fixed mem pool usage for auto-added server names. Added
212 error logging of exact ACME response when challenges failed.
215 *) mod_md: reverses most of v1.0.5 optimization of post_config init, so that
216 mod_ssl can ask for certiticates without crashing. [Stefan Eissing]
218 *) mod_proxy: allow SSLProxyCheckPeer* usage for all proxy modules.
219 PR 61857. [Yann Ylavic]
221 *) mod_proxy_html: fix handling of <meta http-equiv> elements.
224 *) mod_md: fixed backward compatibility to old <ManagedDomain configuration.
225 Add higher level WARNING log when initial request to ACME server fails, mentioning
226 some advice. [Stefan Eissing]
228 *) mod_md: name change in configuration directives. The old names are still working
229 in this version, so you can safely upgrade. They will give warnings in the log and
230 will disappear in the immediate future. ManagedDomain is now MDomain,
231 <ManagedDomain> is now <MDomainSet>. [Stefan Eissing]
233 *) mod_ssl: renamed section <SSLPolicy to <SSLPolicyDefine. Fixed behaviour
234 for new server config merge flag. Denying global, only once used directives
235 inside a SSLPolicyDefine. [Stefan Eissing]
237 *) mod_auth_basic: Be less tolerant when parsing the credencial. Only spaces
238 should be accepted after the authorization scheme. \t are also tolerated.
241 *) mod_http2: fixed unfair scheduling when number of active connections
242 exceeded the scheduling fifo capacity. [Stefan Eissing]
244 *) core: Support zone/scope in IPv6 link-local addresses in Listen and
245 VirtualHost directives (requires APR 1.7.x or later). PR 59396. [Joe Orton]
247 *) mod_md: v1.0.5, restricting post_config dry run to be more silent and performing
248 only necessary work for mod_ssl to be also happy with the configuration.
251 *) mod_md: v1.0.4, removed the 'a2md' utility command from build. Only used in github
252 testing. Avoid problems with our build system that had problems after the latest
253 changes to make a clean initial build. Remove the windows a2md.dsp therefore also.
256 *) mod_ssl: Fail with 403 if the username for FakeBasicAuth mode
257 includes a colon character. PR 52644. [Joe Orton]
259 *) mod_md: v1.0.3, fixed various bugs in persisting job properties, so that status is
260 persisted accross child process changes and staging is reset on reloads. Changed
261 MDCertificateAgreement url checks. As long as the CA reports that the account has
262 an agreement, no further checking is done. Existing accounts need no changes when
263 a new agreement comes out. [Stefan Eissing]
265 *) mod_watchdog: Correct some log messages. [Rainer Jung]
267 *) mod_noloris: complete build setup. [Rainer Jung]
269 *) mod_md: fix static compilation. [Rainer Jung]
271 *) mod_md: fix compilation of helper binary a2md. [Rainer Jung]
273 *) core: fix pcre feature detection in configure when using pcre2. [Rainer Jung]
275 Changes with Apache 2.5.0-alpha
277 *) mod_md: v1.0.1, ServerName/Alias names from pure-http: virtual hosts are no longer
278 auto-added to a Managed Domain. Error counts of jobs are presisted. When the server
279 restarts (gracefully) any errored staging areas are purged to reset the signup/renewal
280 process. [Stefan Eissing]
282 *) mod_md: v1.0.0, new config directive 'MDNotifyCmd' to hook in a program when Managed
283 Domains have obtained/renewed their certificates successfully. [Stefan Eissing]
285 *) mod_md: v0.9.9, fix for applying challenge type based on available ports. [Stefan Eissing]
288 - Use of the new module flag
289 - Removed obsolete function from interface to mod_ssl.
290 - Fallback certificates has version set and no longer claims to be a CA. (re issue #32)
291 - MDRequireHttps now happens before any Redirect.
294 *) mod_ssl: unshare SSLSrvConfigRec instances between base server and virtual hosts. This avoids
295 overwrites of later initializattions (vhost_id), selective disables by "SSLEngine addr-list"
296 and certificate/key pickup from mod_md. [Stefan Eissing]
298 *) mod_md: v0.9.6: a "MDRequireHttps permament" configured domain automatically sends out
299 HSTS (rfc 6797) headers in https: responses. [Stefan Eissing]
301 *) mod_ssl: adding ssl_policies.h[.in] for policy cipher/protocol definitions. Use
302 update_policies.py to update manually from Mozilla JSON definitions at
303 https://statics.tls.security.mozilla.org/server-side-tls-conf.json
307 - New directive (srly: what do you expect at this point?) "MDMustStaple on|off" to control if
308 new certificates are requested with the OCSP Must Staple extension.
309 - Known limitation: when the server is configured to ditch and restart child processes, for example
310 after a certain number of connections/requests, the mod_md watchdog instance might migrate
311 to a new child process. Since not all its state is persisted, some messsages might appear a
312 second time in the logs.
313 - Adding checks when 'MDRequireHttps' is used. It is considered an error when 'MDPortMap 443:-'
314 is used - which negates that a https: port exists. Also, a warning is logged if no
315 VirtualHost can be found for a Managed Domain that has port 443 (or the mapped one) in
317 - New directive 'MDRequireHttps' for redirecting http: traffic to a Managed Domain, permanently
319 - Fix for using a fallback certificate on initial signup of a Managed Domain. Requires also
320 a changed mod_ssl patch (v5) to take effect.
321 - compatibility with libressl
324 *) mod_md: v0.9.2: new directive 'MDHttpProxy' to define a proxy for outgoing connection,
325 some minor bugfixes, twiddle the build system to avoid non-pic code generation.
329 - various fixes in MDRenewWindow handling when specifying percent. Serialization changed. If
330 someone already used percent configurations, it is advised to change these to a new value,
331 reload and change back to the wanted ones.
332 - various fixes in handling of MDPrivateKeys when specifying 2048 bits (the default) explicitly.
333 - mod_md version removed from top level md_store.json file. The store has its own format version
334 to facilitate upgrades.
338 Certificate provisioning from Let's Encrypt (and other ACME CAs) for mod_ssl virtual hosts.
341 *) mod_ssl: add SSLPolicy (define/use) and SSLProxyPolicy directives plus documentation. Add
342 core definitions for policies 'modern', 'intermediate' and 'old', as defined by Mozilla
343 in <https://wiki.mozilla.org/Security/Server_Side_TLS>. [Stefan Eissing]
345 *) mod_md: new module for managing domains across VirtualHosts with ACME protocol
346 implementation for automated certificate signup and renewal. Default CA is
347 the test area of Let's Encrypt right now, so certificates root will not be valid.
348 Will be switched to the real service endpoint rather soon. If you need it now,
349 configure 'MDCertificateAuthority https://acme-v01.api.letsencrypt.org/directory'.
352 *) mod_rewrite: Add 'RewriteOptions LongURLOptimization' to free memory
353 from each set of unmatched rewrite conditions.
356 *) Allow the argument to <IfFile>, <IfDefine>, <IfSection>, <IfDirective>,
357 and <IfModule> to be quoted. This is primarily for the benefit of
358 <IfFile>. [Eric Covener]
360 *) Introduce request taint checking framework to prevent privilege
361 hijacking through .htaccess. [Nick Kew]
363 *) Add <IfDirective> and <IfSection> directives. [Joe Orton]
365 *) When using mod_status with the Event MPM, report the number of requests
366 associated with an active connection in the "ACC" field. Previously
367 zero was always reported with this MPM. PR60647. [Eric Covener]
369 *) mod_proxy_wstunnel: Reliably run before mod_proxy_http.
372 *) http: Allow unknown response status' lines returned in the form of
373 "HTTP/x.x xxx Status xxx". [Yann Ylavic]
375 *) core: Add <IfFile> configuration section to allow any file on disk to be
376 used as a conditional. [Edward Lu, Eric Covener]
378 *) mod_crypto: Add the all purpose crypto filters with support for HLS.
381 *) core: Drop an invalid Last-Modified header value coming
382 from a FCGI/CGI script instead of replacing it with Unix epoch.
383 Warn the users about Last-Modified header value replacements
384 and violations of the RFC.
385 [Yann Ylavic, Luca Toscano, William Rowe, Jacob Champion]
387 *) mod_dav: Allow other modules to become providers and add ACLs
389 [Jari Urpalainen <jari.urpalainen nokia.com>, Graham Leggett]
391 *) mod_dav: Add dav_begin_multistatus, dav_send_one_response,
392 dav_finish_multistatus, dav_send_multistatus, dav_handle_err,
393 dav_failed_proppatch, dav_success_proppatch to mod_dav.h.
394 [Jari Urpalainen <jari.urpalainen nokia.com>, Graham Leggett]
396 *) core: explicitly exclude 'h2' from protocols announced via an Upgrade:
397 header as commanded by http-wg. [Stefan Eissing]
399 *) mod_proxy_ajp: Add "secret" parameter to proxy workers to implement legacy
400 AJP13 authentication. PR 53098. [Dmitry A. Bakshaev <dab1818 gmail com>]
402 *) mpm: Generalise the ap_mpm_register_socket functions to accept pipes
403 or sockets. [Graham Leggett]
405 *) core: Extend support for setting aside data from the network input filter
406 to any connection or request input filter. [Graham Leggett]
408 *) core: Split ap_create_request() from ap_read_request(). [Graham Leggett]
410 *) mod_auth_digest: Fix compatibility with expression-based Authname. PR59039.
413 *) mpm: Add a complete_connection hook that confirms whether an MPM is allowed
414 to leave the WRITE_COMPLETION phase. Move filter code out of the MPMs.
417 *) mod_cache: Consider Cache-Control: s-maxage in expiration
418 calculations. [Eric Covener]
420 *) mod_cache: Allow caching of responses with an Expires header
421 in the past that also has Cache-Control: max-age or s-maxage.
422 PR55156. [Eric Covener]
424 *) mod_session: Introduce SessionExpiryUpdateInterval which allows to
425 configure the session/cookie expiry's update interval. PR 57300.
426 [Paul Spangler <paul.spangler ni.com>]
428 *) core: Extend support for asynchronous write completion from the
429 network filter to any connection or request filter. [Graham Leggett]
431 *) mod_auth_digest: remove AuthDigestEnableQueryStringHack which is no
432 more documented since dec 2012 (r1415960). [Christophe Jaillet]
434 *) mod_charset_lite: On EBCDIC platforms, make sure mod_charset_lite runs
435 after other resource-level filters. [Eric Covener]
437 *) http: Don't remove the Content-Length of zero from a HEAD response if
438 it comes from an origin server, module or script. [Yann Ylavic]
440 *) http: Add support for RFC2324/RFC7168. [Graham Leggett]
442 *) mod_authn_core: Add expression support to AuthName and AuthType.
445 *) suexec: Filter out the HTTP_PROXY environment variable because it is
446 treated as alias for http_proxy by some programs. [Stefan Fritsch]
448 *) mod_proxy_http: Don't establish or reuse a backend connection before pre-
449 fetching the request body, so to minimize the delay between it is supposed
450 to be alive and the first bytes sent: this is a best effort to prevent the
451 backend from closing because of idle or keepalive timeout in the meantime.
452 Also, handle a new "proxy-flushall" environment variable which allows to
453 flush any forwarded body data immediately. PR 56541+37920. [Yann Ylavic]
455 *) core: Define and UnDefine are no longer permitted in
456 directory context. Previously they would always be evaulated
457 as the configuration was read without regard for the directory
458 context. [Eric Covener]
460 *) config: For directives that do not expect any arguments, enforce
461 that none are specified in the configuration file.
462 [Joachim Zobel <jzobel heute-morgen.de>, Eric Covener]
464 *) mod_rewrite: Improve 'bad flag delimeters' startup error by showing
465 how the input was tokenized. PR 56528. [Edward Lu <Chaosed0 gmail.com>]
467 *) mod_proxy: Don't put non balancer-member workers in error state by
468 default for connection or 500/503 errors, and honor status=+I for
469 any error. PR 48388. [Yann Ylavic]
471 *) ap_expr: Add filemod function for checking file modification dates
474 *) mod_authnz_ldap: Resolve crashes with LDAP authz and non-LDAP authn since
475 r1608202. [Eric Covener]
477 *) apreq: Content-Length header should be always interpreted as a decimal.
478 Leading 0 could be erroneously considered as an octal value. PR 56598.
479 [Chris Card <ctcard hotmail com>]
481 *) mod_proxy: Now allow for 191 character worker names, with non-fatal
482 errors if name is truncated. PR53218. [Jim Jagielski]
484 *) mod_ssl: Add optional function "ssl_get_tls_cb" to allow support
485 for channel bindings. [Simo Sorce <simo redhat.com>]
487 *) mod_proxy_wstunnel: Concurrent websockets messages could be
488 lost or delayed with ProxyWebsocketAsync enabled.
489 [Edward Lu <Chaosed0 gmail.com>]
491 *) core, mod_info: Add compiled and loaded PCRE versions to version
492 number display. [Rainer Jung]
494 *) mod_authnz_ldap: Return LDAP connections to the pool before the handler
495 is run, instead of waiting until the end of the request. [Eric Covener]
497 *) mod_proxy_html: support automatic detection of doctype and processing
498 of FPIs. PR56285 [Micha Lenk <micha lenk info>, Nick Kew]
500 *) core: Add ap_mpm_resume_suspended() API to allow a suspended connection
502 [Artem <artemciy gmail.com>, Edward Lu <Chaosed0 gmail.com>]
504 *) core: Add ap_mpm_register_socket_callback_timeout() API. [Eric Covener]
506 *) mod_proxy_wstunnel: Honor ProxyWebsocketIdleTimeout in asynchronous
507 processing mode. [Eric Covener]
509 *) mod_authnz_ldap: Fail explicitly when the filter is too long. Remove
510 unnecessary apr_pstrdup() and strlen(). [Graham Leggett]
512 *) Add the ldap-search option to mod_authnz_ldap, allowing authorization
513 to be based on arbitrary expressions that do not include the username.
516 *) Add the ldap function to the expression API, allowing LDAP filters and
517 distinguished names based on expressions to be escaped correctly to
518 guard against LDAP injection. [Graham Leggett]
520 *) Add module mod_ssl_ct, which provides an implementation of Certificate
521 Transparency (RFC 6962) for httpd. [Jeff Trawick]
523 *) mod_proxy_wstunnel: Avoid sending error responses down an upgraded
524 websockets connection as it is being close down. [Eric Covener]
526 *) mod_proxy_wstunnel: Allow the administrator to cap the amount
527 of time a synchronous websockets connection stays idle with
528 ProxyWebsocketIdleTimeout. [Eric Covener]
530 *) mod_proxy_wstunnel: Change to opt-in for asynchronous support, adding
531 directives ProxyWebsocketAsync and ProxyWebsocketAsyncDelay.
534 *) mod_proxy_wstunnel: Stop leaking websockets backend connections under
535 event MPM (trunk-only). [Eric Covener]
537 *) mod_proxy_http: Add detach_backend hook (potentially usable
538 in other proxy scheme handlers). [Jeff Trawick]
540 *) mod_deflate: Add DeflateAlterETag to control how the ETag
541 is modified. The 'NoChange' parameter mimics 2.2.x behavior.
542 PR 45023, PR 39727. [Eric Covener]
544 *) mod_dir: Default to 2.2-like behavior and skip execution when method is
545 neither GET nor POST, such as for DAV requests. PR 54914. [Chris Darroch]
547 *) mod_rewrite: Rename the handler that does per-directory internal
548 redirects to "rewrite-redirect-handler" from "redirect-handler" so
549 it is less ambiguous and less likely to be reused. [Eric Covener]
551 *) mod_rewrite: Protect against looping with the [N] flag by enforcing a
552 default limit of 10000 iterations, and allowing each rule to change its
553 limit. [Eric Covener]
555 *) mod_ssl: Fix config merging of SSLOCSPEnable and SSLOCSPOverrideResponder.
558 *) Add HttpContentLengthHeadZero and HttpExpectStrict directives.
559 [Yehuda Sadeh <yehuda inktank com>, Justin Erenkrantz]
561 *) mod_ssl: Add -t -DDUMP_CA_CERTS option which dumps the filenames of all
562 configured SSL CA certificates to stdout the same way as DUMP_CERTS does.
565 *) mod_ssl: Don't flush when an EOS is received. Prepares mod_ssl
566 to support write completion. [Graham Leggett]
568 *) core: Add parse_errorlog_arg callback to ap_errorlog_provider
569 to allow providers to check the ErrorLog argument. [Jan Kaluza]
571 *) mod_cgid: Use the servers Timeout for each read from a CGI script,
572 allow override with new CGIDRequestTimeout directive. PR43494
573 [Eric Covener, Toshikuni Fukaya <toshikuni-fukaya cybozu co jp>]
575 *) core: ensure any abnormal exit is reported to stderr if it's a tty.
578 *) mod_lua: Let the Inter-VM get/set functions work with a global
579 shared memory pool instead of a per-process pool. [Daniel Gruno]
581 *) ldap: Support ldaps when using the Microsoft LDAP SDK.
582 PR 54626. [Jean-Frederic Clere]
584 *) mod_authnz_ldap: Change default value of AuthLDAPMaxSubGroupDepth to 0
585 to avoid performance problems when subgroups aren't in use. [Eric Covener]
587 *) mod_syslog: New module implementing syslog ap_error_log provider.
588 Previously, this code was part of core, now it's in separate module.
591 *) core: Add ap_errorlog_provider to make ErrorLog logging modular. Move
592 syslog support from core to new mod_syslog. [Jan Kaluza]
594 *) mod_status, mod_echo: Fix the display of client addresses.
595 They were truncated to 31 characters which is not enough for IPv6 addresses.
596 This is done by deprecating the use of the 'client' field and using
597 the new 'client64' field in worker_score.
598 PR 54848 [Bernhard Schmidt <berni birkenwald de>, Jim Jagielski]
600 *) core: merge AllowEncodedSlashes from the base configuration into
601 virtual hosts. [Eric Covener]
603 *) AIX: Install DSO's with "cp" instead of "install" in instdso.sh
606 *) mod_ldap: Don't keep retrying if a new LDAP connection times out.
609 *) mod_deflate: permit compilation of mod_deflate against a zlib that has
610 been configured with -D Z_PREFIX, which redefines the token "deflate".
613 *) mod_auth_digest: Use the secret when generating nonces in all cases and
614 not only when AuthName is used in .htaccess files (this change may cause
615 problems if used with round robin load balancers). Don't regenerate the
616 secret on graceful restarts. PR 54637 [Stefan Fritsch]
618 *) core: Stop the HTTP_IN filter from attempting to write error buckets
619 to the output filters, which is bogus in the proxy case. Create a
620 clean mapping from APR codes to HTTP status codes, and use it where
621 needed. [Graham Leggett]
623 *) mod_proxy: Ensure network errors detected by the proxy are returned as
624 504 Gateway Timout as opposed to 502 Bad Gateway, in order to be
625 compliant with RFC2616 14.9.4 Cache Revalidation and Reload Controls.
627 *) mod_dav: mod_dav overrides dav_fs response on PUT failure. PR 35981
628 [Basant Kumar Kukreja <basant.kukreja sun.com>, Alejandro Alvarez
629 <alejandro.alvarez.ayllon cern.ch>]
631 *) mod_ldap: LDAP connections used for authentication were not respecting
632 LDAPConnectionPoolTimeout. PR 54587
634 *) core: Add option to add valgrind support. Use it to reduce false positive
635 warnings in mod_ssl. [Stefan Fritsch]
637 *) mod_authn_file, mod_authn_dbd, mod_authn_dbm, mod_authn_socache:
638 Cache the result of the most recent password hash verification for every
639 keep-alive connection. This saves some expensive calculations.
642 *) http: Remove support for Request-Range header sent by Navigator 2-3 and
643 MSIE 3. [Stefan Fritsch]
645 *) core, http: Extend HttpProtocol with an option to enforce stricter HTTP
646 conformance or to only log the found problems. [Stefan Fritsch]
650 *) core: Add LogLevelOverride directive that allows to override the
651 loglevel for clients from certain IPs. This also works for things
652 like the SSL handshake where <If> LogLevel ... </If> is evaluated
653 too late. [Stefan Fritsch]
655 *) core: Add new directive Warning to issue warnings from a configuration
656 file. Both Warning and Error now generate a timestamped log message.
659 *) ap_expr: Add SERVER_PROTOCOL_VERSION, ..._MAJOR, and ..._MINOR
660 variables. [Stefan Fritsch]
662 *) core: New directive HttpProtocol which allows to disable HTTP/0.9
663 support. [Stefan Fritsch]
665 *) mod_allowhandlers: New module to forbid specific handlers for specific
666 directories. [Stefan Fritsch]
668 *) mod_systemd: New module, for integration with systemd on Linux.
669 [Jan Kaluza <jkaluza redhat.com>]
671 *) WinNT MPM: Store pid and generation for each thread in scoreboard
672 to allow tracking of threads from exiting children via mod_status
673 or other such mechanisms. [Jeff Trawick]
675 *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR:
676 - APIs: ap_log_pid(), ap_remove_pid, ap_read_pid()
677 - mod_cache: thundering herd lock directory
678 - mod_lbmethod_heartbeat, mod_heartmonitor: heartbeat storage file
679 - mod_ldap: shared memory cache
680 - mod_socache_shmcb, mod_socache_dbm: shared memory or dbm for cache
683 *) mod_ssl: Add support for TLS Next Protocol Negotiation. PR 52210.
684 [Matthew Steele <mdsteele google.com>]
686 *) cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will
687 be compiled by the build compiler instead of the host compiler.
688 Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected.
689 PR 51257. [Guenter Knauf]
691 *) core: In maintainer mode, replace apr_palloc with a version that
692 initializes the allocated memory with non-zero values, except if
693 AP_DEBUG_NO_ALLOC_POISON is defined. [Stefan Fritsch]
695 *) mod_policy: Add a new testing module to help server administrators
696 enforce a configurable level of protocol compliance on their
697 servers and application servers behind theirs. [Graham Leggett]
699 *) mod_firehose: Add a new debugging module able to record traffic
700 passing through the server in such a way that connections and/or
701 requests be reconstructed and replayed. [Graham Leggett]
711 [Apache 2.5.0-dev includes those bug fixes and changes with the
712 Apache 2.4.xx tree as documented below, except as noted.]
714 Changes with Apache 2.4.x and later:
716 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?view=markup
718 Changes with Apache 2.2.x and later:
720 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup
722 Changes with Apache 2.0.x and later:
724 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup
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