2 Changes with Apache 2.5.0
4 *) mod_http2: if configured with nghttp2 1.14.0 and onward, invalid request
5 headers will immediately reset the stream with a PROTOCOL error. Feature
6 logged by module on startup as 'INVHD' in info message.
9 *) mod_http2: fixed handling of stream buffers during shutdown.
12 *) mod_proxy_hcheck: Set health check URI and expression correctly for health
13 check worker. PR 60038 [zdeno <zdeno@scnet.sk>]
15 *) mod_cache: Use the actual URI path and query-string for identifying the
16 cached entity (key), such that rewrites are taken into account when
17 running afterwards (CacheQuickHandler off). PR 21935. [Yann Ylavic]
19 *) mod_ssl: Fix quick renegotiation (OptRenegotiaton) with no intermediate
20 in the client certificate chain. PR 55786. [Yann Ylavic]
22 *) mod_reqtimeout: Fix body timeout disabling for CONNECT requests to avoid
23 triggering mod_proxy_connect's AH01018 once the tunnel is established.
26 *) mod_proxy_balancer: Prevent redirect loops between workers within a
27 balancer by limiting the number of redirects to the number balancer
28 members. PR 59864 [Ruediger Pluem]
30 *) mod_proxy: Correctly consider error response codes by the backend when
31 processing failonstatus. PR 59869 [Ruediger Pluem]
33 *) mod_proxy_fcgi: avoid loops when ProxyErrorOverride is enabled
34 and the error documents are proxied. PR 55415. [Luca Toscano]
36 *) mod_proxy_fcgi: read the whole FCGI response even when the content has
37 not been modified (HTTP 304) to avoid subsequent bogus reads and
38 confusing error messages logged. [Luca Toscano]
40 *) mod_crypto: Add the all purpose crypto filters with support for HLS.
43 *) ab: Add option -I to use the Server Name Indication (SNI) extension on
44 outgoing TLS connections, according to the Host header (if any) or the
45 requested URL's hostname otherwise. [Yann Ylavic]
47 *) mod_ssl: reset client-verify state of ssl when aborting renegotiations.
48 [Erki Aring <erki@example.ee>, Stefan Eissing]
50 *) mod_proxy_{http,ajp,fcgi}: don't reuse backend connections with data
51 available before the request is sent. PR 57832. [Yann Ylavic]
53 *) mod_sed: Fix 'x' command processing. [Christophe Jaillet]
55 *) core: Drop an invalid Last-Modified header value coming
56 from a FCGI/CGI script instead of replacing it with Unix epoch.
57 Warn the users about Last-Modified header value replacements and
58 improved handling of non-GMT datestr.
59 [Yann Ylavic, Luca Toscano]
61 *) mod_dav: Allow other modules to become providers and add ACLs
63 [Jari Urpalainen <jari.urpalainen nokia.com>, Graham Leggett]
65 *) mod_dav: Add dav_begin_multistatus, dav_send_one_response,
66 dav_finish_multistatus, dav_send_multistatus, dav_handle_err,
67 dav_failed_proppatch, dav_success_proppatch to mod_dav.h.
68 [Jari Urpalainen <jari.urpalainen nokia.com>, Graham Leggett]
70 *) core: Add -DDUMP_INCLUDES configtest option to show the tree
71 of Included configuration files. [Jacob Champion <champion.pxi gmail.com>]
73 *) mod_dav: Add support for childtags to dav_error.
74 [Jari Urpalainen <jari.urpalainen nokia.com>]
76 *) mod_proxy, mod_ssl: Handle SSLProxy* directives in <Proxy> sections,
77 allowing per backend TLS configuration. [Yann Ylavic]
79 *) core: explicitly exclude 'h2' from protocols announced via an Upgrade:
80 header as commanded by http-wg. [Stefan Eissing]
82 *) http: Respond with "408 Request Timeout" when a timeout occurs while
83 reading the request body. [Yann Ylavic]
85 *) scoreboard/status: Keep workers' previous Client, VHost and Request values
86 when idle, like in 2.4.18 and earlier. [Yann Ylavic]
88 *) mod_proxy_ajp: Add "secret" parameter to proxy workers to implement legacy
89 AJP13 authentication. PR 53098. [Dmitry A. Bakshaev <dab1818 gmail com>]
91 *) mpm_event: Don't take over scoreboard slots from gracefully finishing
92 threads. [Stefan Fritsch]
94 *) mod_status: Display the process slot number in the async connection
95 overview. [Stefan Fritsch]
97 *) mpm_event, mpm_worker: Fix computation of MinSpareThreads' lower bound
98 according the number of listeners buckets. [Yann Ylavic]
100 *) mpm: Generalise the ap_mpm_register_socket functions to accept pipes
101 or sockets. [Graham Leggett]
103 *) core: Extend support for setting aside data from the network input filter
104 to any connection or request input filter. [Graham Leggett]
106 *) mod_ssl: Add "no_crl_for_cert_ok" flag to SSLCARevocationCheck directive
107 to opt-in previous behaviour (2.2) with CRLs verification when checking
108 certificate(s) with no corresponding CRL. [Yann Ylavic]
110 *) core: Split ap_create_request() from ap_read_request(). [Graham Leggett]
112 *) ab: Use caseless matching for HTTP tokens (e.g. content-length). PR 59111.
115 *) mod_auth_digest: Fix compatibility with expression-based Authname. PR59039.
118 *) mpm: Add a complete_connection hook that confirms whether an MPM is allowed
119 to leave the WRITE_COMPLETION phase. Move filter code out of the MPMs.
122 *) core: Added support for HTTP code 451. PR58985.
123 [Yehuda Katz <yehuda ymkatz.net>, Jim Jagielski]
125 *) mod_ssl: Add support for OpenSSL 1.1.0. [Rainer Jung]
127 *) mod_filter: Fix AddOutputFilterByType with non-content-level filters.
128 PR58856 [Micha Lenk <micha lenk.info>]
130 *) mod_cache: Consider Cache-Control: s-maxage in expiration
131 calculations. [Eric Covener]
133 *) mod_cache: Allow caching of responses with an Expires header
134 in the past that also has Cache-Control: max-age or s-maxage.
135 PR55156. [Eric Covener]
137 *) Added many log numbers to log statements that had none.
139 *) mod_session: Introduce SessionExpiryUpdateInterval which allows to
140 configure the session/cookie expiry's update interval. PR 57300.
141 [Paul Spangler <paul.spangler ni.com>]
143 *) core: Extend support for asynchronous write completion from the
144 network filter to any connection or request filter. [Graham Leggett]
146 *) mpm_event: Free memory earlier when shutting down processes.
149 *) mod_auth_digest: remove AuthDigestEnableQueryStringHack which is no
150 more documented since dec 2012 (r1415960). [Christophe Jaillet]
152 *) mod_charset_lite: On EBCDIC platforms, make sure mod_charset_lite runs
153 after other resource-level filters. [Eric Covener]
155 *) mod_dir: Responses that go through "FallbackResource" might appear to
156 hang due to unterminated chunked encoding. PR58292. [Eric Covener]
158 *) http: Don't remove the Content-Length of zero from a HEAD response if
159 it comes from an origin server, module or script. [Yann Ylavic]
161 *) http: Add support for RFC2324/RFC7168. [Graham Leggett]
163 *) mod_rewrite: Add support for starting External Rewriting Programs
164 as non-root user on UNIX systems by specifying username and group name
165 as third argument of RewriteMap directive. [Jan Kaluza]
167 *) mod_authn_core: Add expression support to AuthName and AuthType.
170 *) suexec: Filter out the HTTP_PROXY environment variable because it is
171 treated as alias for http_proxy by some programs. [Stefan Fritsch]
173 *) mod_proxy_http: Don't establish or reuse a backend connection before pre-
174 fetching the request body, so to minimize the delay between it is supposed
175 to be alive and the first bytes sent: this is a best effort to prevent the
176 backend from closing because of idle or keepalive timeout in the meantime.
177 Also, handle a new "proxy-flushall" environment variable which allows to
178 flush any forwarded body data immediately. PR 56541+37920. [Yann Ylavic]
180 *) core: Define and UnDefine are no longer permitted in
181 directory context. Previously they would always be evaulated
182 as the configuration was read without regard for the directory
183 context. [Eric Covener]
185 *) config: For directives that do not expect any arguments, enforce
186 that none are specified in the configuration file.
187 [Joachim Zobel <jzobel heute-morgen.de>, Eric Covener]
189 *) mod_rewrite: Improve 'bad flag delimeters' startup error by showing
190 how the input was tokenized. PR 56528. [Edward Lu <Chaosed0 gmail.com>]
192 *) mod_proxy: Don't put non balancer-member workers in error state by
193 default for connection or 500/503 errors, and honor status=+I for
194 any error. PR 48388. [Yann Ylavic]
196 *) mod_socache_memcache: Pass expiration time through to memcached. PR 55445.
197 [Faidon Liambotis <paravoid debian.org>, Joe Orton]
199 *) ap_expr: Add filemod function for checking file modification dates
202 *) mod_authnz_ldap: Resolve crashes with LDAP authz and non-LDAP authn since
203 r1608202. [Eric Covener]
205 *) apreq: Content-Length header should be always interpreted as a decimal.
206 Leading 0 could be erroneously considered as an octal value. PR 56598.
207 [Chris Card <ctcard hotmail com>]
209 *) mod_proxy: Now allow for 191 character worker names, with non-fatal
210 errors if name is truncated. PR53218. [Jim Jagielski]
212 *) mod_ssl: Add optional function "ssl_get_tls_cb" to allow support
213 for channel bindings. [Simo Sorce <simo redhat.com>]
215 *) mod_proxy_wstunnel: Concurrent websockets messages could be
216 lost or delayed with ProxyWebsocketAsync enabled.
217 [Edward Lu <Chaosed0 gmail.com>]
219 *) core, mod_info: Add compiled and loaded PCRE versions to version
220 number display. [Rainer Jung]
222 *) mod_authnz_ldap: Return LDAP connections to the pool before the handler
223 is run, instead of waiting until the end of the request. [Eric Covener]
225 *) mod_proxy_html: support automatic detection of doctype and processing
226 of FPIs. PR56285 [Micha Lenk <micha lenk info>, Nick Kew]
228 *) mod_proxy_html: skip documents shorter than 4 bytes
229 PR 56286 [Micha Lenk <micha lenk info>]
231 *) mod_proxy_fdpass: Fix computation of the size of 'struct sockaddr_un'
232 when passed to 'connect()'.
233 [Graham Dumpleton <grahamd apache org>]
235 *) core: Add ap_mpm_resume_suspended() API to allow a suspended connection
237 [Artem <artemciy gmail.com>, Edward Lu <Chaosed0 gmail.com>]
239 *) core: Add ap_mpm_register_socket_callback_timeout() API. [Eric Covener]
241 *) mod_proxy_wstunnel: Honor ProxyWebsocketIdleTimeout in asynchronous
242 processing mode. [Eric Covener]
244 *) mod_authnz_ldap: Fail explicitly when the filter is too long. Remove
245 unnecessary apr_pstrdup() and strlen(). [Graham Leggett]
247 *) Add the ldap-search option to mod_authnz_ldap, allowing authorization
248 to be based on arbitrary expressions that do not include the username.
251 *) Add the ldap function to the expression API, allowing LDAP filters and
252 distinguished names based on expressions to be escaped correctly to
253 guard against LDAP injection. [Graham Leggett]
255 *) Add module mod_ssl_ct, which provides an implementation of Certificate
256 Transparency (RFC 6962) for httpd. [Jeff Trawick]
258 *) mod_proxy_wstunnel: Avoid sending error responses down an upgraded
259 websockets connection as it is being close down. [Eric Covener]
261 *) mod_proxy_wstunnel: Allow the administrator to cap the amount
262 of time a synchronous websockets connection stays idle with
263 ProxyWebsocketIdleTimeout. [Eric Covener]
265 *) mod_proxy_wstunnel: Change to opt-in for asynchronous support, adding
266 directives ProxyWebsocketAsync and ProxyWebsocketAsyncDelay.
269 *) mod_proxy_wstunnel: Stop leaking websockets backend connections under
270 event MPM (trunk-only). [Eric Covener]
272 *) mod_proxy_http: Add detach_backend hook (potentially usable
273 in other proxy scheme handlers). [Jeff Trawick]
275 *) mod_deflate: Add DeflateAlterETag to control how the ETag
276 is modified. The 'NoChange' parameter mimics 2.2.x behavior.
277 PR 45023, PR 39727. [Eric Covener]
279 *) mod_rewrite: Add 'BNF' (backreferences-no-plus) flag to RewriteRule to
280 allow spaces in backreferences to be encoded as %20 instead of '+'.
283 *) mod_rewrite: Support an optional list of characters to escape in the
284 argument for the 'B' (escape backreferences) flag. [Eric Covener]
286 *) mod_dir: Default to 2.2-like behavior and skip execution when method is
287 neither GET nor POST, such as for DAV requests. PR 54914. [Chris Darroch]
289 *) mod_rewrite: Rename the handler that does per-directory internal
290 redirects to "rewrite-redirect-handler" from "redirect-handler" so
291 it is less ambiguous and less likely to be reused. [Eric Covener]
293 *) mod_rewrite: Protect against looping with the [N] flag by enforcing a
294 default limit of 10000 iterations, and allowing each rule to change its
295 limit. [Eric Covener]
297 *) mod_ssl: Fix config merging of SSLOCSPEnable and SSLOCSPOverrideResponder.
300 *) Add HttpContentLengthHeadZero and HttpExpectStrict directives.
301 [Yehuda Sadeh <yehuda inktank com>, Justin Erenkrantz]
303 *) mod_ssl: Add -t -DDUMP_CA_CERTS option which dumps the filenames of all
304 configured SSL CA certificates to stdout the same way as DUMP_CERTS does.
307 *) mod_ssl: Don't flush when an EOS is received. Prepares mod_ssl
308 to support write completion. [Graham Leggett]
310 *) core: Add parse_errorlog_arg callback to ap_errorlog_provider
311 to allow providers to check the ErrorLog argument. [Jan Kaluza]
313 *) mod_cgid: Use the servers Timeout for each read from a CGI script,
314 allow override with new CGIDRequestTimeout directive. PR43494
315 [Eric Covener, Toshikuni Fukaya <toshikuni-fukaya cybozu co jp>]
317 *) core: ensure any abnormal exit is reported to stderr if it's a tty.
320 *) mod_lua: Let the Inter-VM get/set functions work with a global
321 shared memory pool instead of a per-process pool. [Daniel Gruno]
323 *) ldap: Support ldaps when using the Microsoft LDAP SDK.
324 PR 54626. [Jean-Frederic Clere]
326 *) mod_authnz_ldap: Change default value of AuthLDAPMaxSubGroupDepth to 0
327 to avoid performance problems when subgroups aren't in use. [Eric Covener]
329 *) mod_syslog: New module implementing syslog ap_error_log provider.
330 Previously, this code was part of core, now it's in separate module.
333 *) core: Add ap_errorlog_provider to make ErrorLog logging modular. Move
334 syslog support from core to new mod_syslog. [Jan Kaluza]
336 *) mod_status, mod_echo: Fix the display of client addresses.
337 They were truncated to 31 characters which is not enough for IPv6 addresses.
338 PR 54848 [Bernhard Schmidt <berni birkenwald de>]
340 *) mod_unique_id: Use output of the PRNG rather than IP address and
341 pid, avoiding sleep() call and possible DNS issues at startup,
342 plus improving randomness for IPv6-only hosts.
343 [Jan Kaluza <jkaluza redhat.com>]
345 *) mod_file_cache: mod_file_cache should be able to serve files that
346 haven't had a Content-Type set via e.g. mod_mime. [Eric Covener]
348 *) core: merge AllowEncodedSlashes from the base configuration into
349 virtual hosts. [Eric Covener]
351 *) AIX: Install DSO's with "cp" instead of "install" in instdso.sh
354 *) mod_ldap: Don't keep retrying if a new LDAP connection times out.
357 *) mod_deflate: permit compilation of mod_deflate against a zlib that has
358 been configured with -D Z_PREFIX, which redefines the token "deflate".
361 *) mod_auth_digest: Use the secret when generating nonces in all cases and
362 not only when AuthName is used in .htaccess files (this change may cause
363 problems if used with round robin load balancers). Don't regenerate the
364 secret on graceful restarts. PR 54637 [Stefan Fritsch]
366 *) core: Remove apr_brigade_flatten(), buffering and duplicated code
367 from the HTTP_IN filter, parse chunks in a single pass with zero copy.
368 Reduce memory usage by 48 bytes per request. [Graham Leggett]
370 *) core: Stop the HTTP_IN filter from attempting to write error buckets
371 to the output filters, which is bogus in the proxy case. Create a
372 clean mapping from APR codes to HTTP status codes, and use it where
373 needed. [Graham Leggett]
375 *) mod_proxy: Ensure network errors detected by the proxy are returned as
376 504 Gateway Timout as opposed to 502 Bad Gateway, in order to be
377 compliant with RFC2616 14.9.4 Cache Revalidation and Reload Controls.
379 *) mod_dav: mod_dav overrides dav_fs response on PUT failure. PR 35981
380 [Basant Kumar Kukreja <basant.kukreja sun.com>, Alejandro Alvarez
381 <alejandro.alvarez.ayllon cern.ch>]
383 *) mod_ldap: LDAP connections used for authentication were not respecting
384 LDAPConnectionPoolTimeout. PR 54587
386 *) core: ap_rgetline_core now pulls from r->proto_input_filters.
388 *) mod_proxy_html: process parsed comments immediately.
389 Fixes bug where parsed comments may be lost. [Nick Kew]
391 *) mod_proxy_html: introduce doctype for HTML 5 [Nick Kew]
393 *) mod_proxy_html: fix typo-bug processing "strict" vs "transitional"
394 HTML/XHTML [Nick Kew]
396 *) core: Add option to add valgrind support. Use it to reduce false positive
397 warnings in mod_ssl. [Stefan Fritsch]
399 *) mod_authn_file, mod_authn_dbd, mod_authn_dbm, mod_authn_socache:
400 Cache the result of the most recent password hash verification for every
401 keep-alive connection. This saves some expensive calculations.
404 *) http: Remove support for Request-Range header sent by Navigator 2-3 and
405 MSIE 3. [Stefan Fritsch]
407 *) core, http: Extend HttpProtocol with an option to enforce stricter HTTP
408 conformance or to only log the found problems. [Stefan Fritsch]
410 *) core: Correctly parse an IPv6 literal host specification in an absolute
411 URL in the request line. [Stefan Fritsch]
415 *) core: Add LogLevelOverride directive that allows to override the
416 loglevel for clients from certain IPs. This also works for things
417 like the SSL handshake where <If> LogLevel ... </If> is evaluated
418 too late. [Stefan Fritsch]
420 *) core: Add new directive Warning to issue warnings from a configuration
421 file. Both Warning and Error now generate a timestamped log message.
424 *) ap_expr: Add SERVER_PROTOCOL_VERSION, ..._MAJOR, and ..._MINOR
425 variables. [Stefan Fritsch]
427 *) core: New directive RegisterHttpMethod for registering non-standard
428 HTTP methods. [Stefan Fritsch]
430 *) core: New directive HttpProtocol which allows to disable HTTP/0.9
431 support. [Stefan Fritsch]
433 *) mod_allowhandlers: New module to forbid specific handlers for specific
434 directories. [Stefan Fritsch]
436 *) mod_systemd: New module, for integration with systemd on Linux.
437 [Jan Kaluza <jkaluza redhat.com>]
439 *) WinNT MPM: Store pid and generation for each thread in scoreboard
440 to allow tracking of threads from exiting children via mod_status
441 or other such mechanisms. [Jeff Trawick]
443 *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR:
444 - APIs: ap_log_pid(), ap_remove_pid, ap_read_pid()
445 - mod_cache: thundering herd lock directory
446 - mod_lbmethod_heartbeat, mod_heartmonitor: heartbeat storage file
447 - mod_ldap: shared memory cache
448 - mod_socache_shmcb, mod_socache_dbm: shared memory or dbm for cache
451 *) suexec: Add --enable-suexec-capabilites support on Linux, to use
452 setuid/setgid capability bits rather than a setuid root binary.
455 *) suexec: Add support for logging to syslog as an alternative to logging
456 to a file; configure --without-suexec-logfile --with-suexec-syslog.
459 *) mod_ssl: Add support for TLS Next Protocol Negotiation. PR 52210.
460 [Matthew Steele <mdsteele google.com>]
462 *) cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will
463 be compiled by the build compiler instead of the host compiler.
464 Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected.
465 PR 51257. [Guenter Knauf]
467 *) core: In maintainer mode, replace apr_palloc with a version that
468 initializes the allocated memory with non-zero values, except if
469 AP_DEBUG_NO_ALLOC_POISON is defined. [Stefan Fritsch]
471 *) mod_policy: Add a new testing module to help server administrators
472 enforce a configurable level of protocol compliance on their
473 servers and application servers behind theirs. [Graham Leggett]
475 *) mod_firehose: Add a new debugging module able to record traffic
476 passing through the server in such a way that connections and/or
477 requests be reconstructed and replayed. [Graham Leggett]
487 [Apache 2.5.0-dev includes those bug fixes and changes with the
488 Apache 2.4.xx tree as documented below, except as noted.]
490 Changes with Apache 2.4.x and later:
492 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?view=markup
494 Changes with Apache 2.2.x and later:
496 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup
498 Changes with Apache 2.0.x and later:
500 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup