2 Changes with Apache 2.5.0
4 *) mod_ssl: append :!aNULL:!eNULL:!EXP to the cipher string settings,
5 instead of prepending !aNULL:!eNULL:!EXP: (as was the case in 2.4.7
6 and later). Enables support for configuring the SUITEB* cipher
7 strings introduced in OpenSSL 1.0.2. PR 58213. [Kaspar Brand]
9 *) mod_autoindex: Allow autoindexes when neither mod_dir nor mod_mime are
10 loaded. [Eric Covener]
12 *) mod_charset_lite: On EBCDIC platforms, make sure mod_charset_lite runs
13 after other resource-level filters. [Eric Covener]
15 *) mod_dir: Responses that go through "FallbackResource" might appear to
16 hang due to unterminated chunked encoding. PR58292. [Eric Covener]
18 *) mod_socache_memcache: Add the 'MemcacheConnTTL' directive to control how
19 long to keep idle connections with the memcache server(s).
20 Change default value from 600 usec (!) to 15 sec. PR 58091
23 *) mod_rewrite: Allow cookies set by mod_rewrite to contain ':' by accepting
24 ';' as an alternate separator. PR47241.
25 [<bugzilla schermesser com>, Eric Covener]
27 *) apxs: Add HTTPD_VERSION and HTTPD_MMN to the variables available with
28 apxs -q. PR58202. [Daniel Shahaf <danielsh apache.org>]
30 *) mod_ssl: Add support for extracting the msUPN and dnsSRV forms
31 of subjectAltName entries of type "otherName" into
32 SSL_{CLIENT,SERVER}_SAN_OTHER_{msUPN,dnsSRV}_n environment
33 variables. Addresses PR 58020. [Jan Pazdziora <jpazdziora redhat.com>,
36 *) mod_h2: added donated http/2 implementation to build system. Similar
37 configuration options to mod_ssl. [Stefan Eissing]
39 *) mod_authz_dbd: Avoid a crash when lacking correct DB access permissions.
40 PR 57868. [Jose Kahan <jose w3.org>, Yann Ylavic]
42 *) mod_alias: Limit Redirect expressions to directory (Location) context
43 and redirect statuses (implicit or explicit).
44 [Yann Ylavic, Ruediger Pluem]
46 *) mod_substitute: Fix configuraton merge order.
47 PR 57641 [<Marc.Stern approach.be>]
49 *) mod_ssl: When SSLVerify is disabled (NONE), don't force a renegotiation if
50 the SSLVerifyDepth applied with the default/handshaken vhost differs from
51 the one applicable with the finally selected vhost. [Yann Ylavic]
53 *) mod_ssl: add ALPN support by allowing other modules to register callbacks
54 for negotiation of the application layer protocol. PR 52210.
55 [Matthew Steele <mdsteele google com>, Joe Orton, Jim Jagielski,
56 Stefan Eissing <stefan eissing org>, Rainer Jung, Ruediger Pluem,
59 *) http: Don't remove the Content-Length of zero from a HEAD response if
60 it comes from an origin server, module or script. [Yann Ylavic]
62 *) core/util_script: make REDIRECT_URL a full URL. PR 57785. [Nick Kew]
64 *) http: Add support for RFC2324/RFC7168. [Graham Leggett]
66 *) mod_proxy: Fix a race condition that caused a failed worker to be retried
67 before the retry period is over. [Ruediger Pluem]
69 *) mod_rewrite: Add support for starting External Rewriting Programs
70 as non-root user on UNIX systems by specifying username and group name
71 as third argument of RewriteMap directive. [Jan Kaluza]
73 *) mod_authn_core: Add expression support to AuthName and AuthType.
76 *) suexec: Filter out the HTTP_PROXY environment variable because it is
77 treated as alias for http_proxy by some programs. [Stefan Fritsch]
79 *) mod_proxy_http: Don't establish or reuse a backend connection before pre-
80 fetching the request body, so to minimize the delay between it is supposed
81 to be alive and the first bytes sent: this is a best effort to prevent the
82 backend from closing because of idle or keepalive timeout in the meantime.
83 Also, handle a new "proxy-flushall" environment variable which allows to
84 flush any forwarded body data immediately. PR 56541+37920. [Yann Ylavic]
86 *) core: Define and UnDefine are no longer permitted in
87 directory context. Previously they would always be evaulated
88 as the configuration was read without regard for the directory
89 context. [Eric Covener]
91 *) config: For directives that do not expect any arguments, enforce
92 that none are specified in the configuration file.
93 [Joachim Zobel <jzobel heute-morgen.de>, Eric Covener]
95 *) mod_rewrite: Improve 'bad flag delimeters' startup error by showing
96 how the input was tokenized. PR 56528. [Edward Lu <Chaosed0 gmail.com>]
98 *) mod_proxy: Don't put non balancer-member workers in error state by
99 default for connection or 500/503 errors, and honor status=+I for
100 any error. PR 48388. [Yann Ylavic]
102 *) mod_socache_memcache: Pass expiration time through to memcached. PR 55445.
103 [Faidon Liambotis <paravoid debian.org>, Joe Orton]
105 *) ap_expr: Add filemod function for checking file modification dates
108 *) mod_authnz_ldap: Resolve crashes with LDAP authz and non-LDAP authn since
109 r1608202. [Eric Covener]
111 *) core: Ensure that httpd exits with an error status when the MPM fails
112 to run. [Yann Ylavic]
114 *) apreq: Content-Length header should be always interpreted as a decimal.
115 Leading 0 could be erroneously considered as an octal value. PR 56598.
116 [Chris Card <ctcard hotmail com>]
118 *) mod_proxy: Now allow for 191 character worker names, with non-fatal
119 errors if name is truncated. PR53218. [Jim Jagielski]
121 *) mod_ssl: Add optional function "ssl_get_tls_cb" to allow support
122 for channel bindings. [Simo Sorce <simo redhat.com>]
124 *) mod_proxy_wstunnel: Concurrent websockets messages could be
125 lost or delayed with ProxyWebsocketAsync enabled.
126 [Edward Lu <Chaosed0 gmail.com>]
128 *) core, mod_info: Add compiled and loaded PCRE versions to version
129 number display. [Rainer Jung]
131 *) mpm_winnt: Accept utf-8 (Unicode) service names and descriptions for
132 internationalization. [William Rowe]
134 *) mpm_winnt: Normalize the error and status messages emitted by service.c,
135 the service control interface for Windows. [William Rowe]
137 *) mod_authnz_ldap: Return LDAP connections to the pool before the handler
138 is run, instead of waiting until the end of the request. [Eric Covener]
140 *) mod_log_config: Add GlobalLog to allow a globally defined log to
141 be inherited by virtual hosts that define a CustomLog.
142 [Edward Lu <Chaosed0 gmail.com>]
144 *) MPMs: Support SO_REUSEPORT to create multiple duplicated listener
145 records for scalability. [Yingqi Lu <yingqi.lu@intel.com>,
146 Jeff Trawick, Jim Jagielski]
148 *) mod_proxy_html: support automatic detection of doctype and processing
149 of FPIs. PR56285 [Micha Lenk <micha lenk info>, Nick Kew]
151 *) mod_proxy_html: skip documents shorter than 4 bytes
152 PR 56286 [Micha Lenk <micha lenk info>]
154 *) mod_proxy_fdpass: Fix computation of the size of 'struct sockaddr_un'
155 when passed to 'connect()'.
156 [Graham Dumpleton <grahamd apache org>]
158 *) core: Add ap_mpm_resume_suspended() API to allow a suspended connection
160 [Artem <artemciy gmail.com>, Edward Lu <Chaosed0 gmail.com>]
162 *) core: Add ap_mpm_register_socket_callback_timeout() API. [Eric Covener]
164 *) mod_proxy_wstunnel: Honor ProxyWebsocketIdleTimeout in asynchronous
165 processing mode. [Eric Covener]
167 *) mod_authnz_ldap: Fail explicitly when the filter is too long. Remove
168 unnecessary apr_pstrdup() and strlen(). [Graham Leggett]
170 *) Add the ldap-search option to mod_authnz_ldap, allowing authorization
171 to be based on arbitrary expressions that do not include the username.
174 *) Add the ldap function to the expression API, allowing LDAP filters and
175 distinguished names based on expressions to be escaped correctly to
176 guard against LDAP injection. [Graham Leggett]
178 *) Add module mod_ssl_ct, which provides an implementation of Certificate
179 Transparency (RFC 6962) for httpd. [Jeff Trawick]
181 *) mod_remoteip: Prevent an external proxy from presenting an internal
182 proxy. PR 55962. [Mike Rumph]
184 *) mod_ssl: Add hooks to allow other modules to perform processing at
185 several stages of initialization and connection handling. See
186 mod_ssl_openssl.h. [Jeff Trawick]
188 *) mod_proxy_wstunnel: Avoid sending error responses down an upgraded
189 websockets connection as it is being close down. [Eric Covener]
191 *) mod_proxy_wstunnel: Allow the administrator to cap the amount
192 of time a synchronous websockets connection stays idle with
193 ProxyWebsocketIdleTimeout. [Eric Covener]
195 *) mod_proxy_wstunnel: Change to opt-in for asynchronous support, adding
196 directives ProxyWebsocketAsync and ProxyWebsocketAsyncDelay.
199 *) mod_proxy_wstunnel: Stop leaking websockets backend connections under
200 event MPM (trunk-only). [Eric Covener]
202 *) mod_proxy_http: Add detach_backend hook (potentially usable
203 in other proxy scheme handlers). [Jeff Trawick]
205 *) mod_deflate: Add DeflateAlterETag to control how the ETag
206 is modified. The 'NoChange' parameter mimics 2.2.x behavior.
207 PR 45023, PR 39727. [Eric Covener]
209 *) mod_rewrite: Add 'BNF' (backreferences-no-plus) flag to RewriteRule to
210 allow spaces in backreferences to be encoded as %20 instead of '+'.
213 *) mod_rewrite: Support an optional list of characters to escape in the
214 argument for the 'B' (escape backreferences) flag. [Eric Covener]
216 *) mod_dir: Default to 2.2-like behavior and skip execution when method is
217 neither GET nor POST, such as for DAV requests. PR 54914. [Chris Darroch]
219 *) mod_rewrite: Rename the handler that does per-directory internal
220 redirects to "rewrite-redirect-handler" from "redirect-handler" so
221 it is less ambiguous and less likely to be reused. [Eric Covener]
223 *) mod_rewrite: Protect against looping with the [N] flag by enforcing a
224 default limit of 10000 iterations, and allowing each rule to change its
225 limit. [Eric Covener]
227 *) mod_ssl: Fix config merging of SSLOCSPEnable and SSLOCSPOverrideResponder.
230 *) Add HttpContentLengthHeadZero and HttpExpectStrict directives.
231 [Yehuda Sadeh <yehuda inktank com>, Justin Erenkrantz]
233 *) mod_ssl: Add -t -DDUMP_CA_CERTS option which dumps the filenames of all
234 configured SSL CA certificates to stdout the same way as DUMP_CERTS does.
237 *) mod_ssl: Don't flush when an EOS is received. Prepares mod_ssl
238 to support write completion. [Graham Leggett]
240 *) core: Add parse_errorlog_arg callback to ap_errorlog_provider
241 to allow providers to check the ErrorLog argument. [Jan Kaluza]
243 *) mod_cgid: Use the servers Timeout for each read from a CGI script,
244 allow override with new CGIDRequestTimeout directive. PR43494
245 [Eric Covener, Toshikuni Fukaya <toshikuni-fukaya cybozu co jp>]
247 *) core: ensure any abnormal exit is reported to stderr if it's a tty.
250 *) mod_lua: Let the Inter-VM get/set functions work with a global
251 shared memory pool instead of a per-process pool. [Daniel Gruno]
253 *) ldap: Support ldaps when using the Microsoft LDAP SDK.
254 PR 54626. [Jean-Frederic Clere]
256 *) mod_authnz_ldap: Change default value of AuthLDAPMaxSubGroupDepth to 0
257 to avoid performance problems when subgroups aren't in use. [Eric Covener]
259 *) mod_syslog: New module implementing syslog ap_error_log provider.
260 Previously, this code was part of core, now it's in separate module.
263 *) core: Add ap_errorlog_provider to make ErrorLog logging modular. Move
264 syslog support from core to new mod_syslog. [Jan Kaluza]
266 *) mod_status, mod_echo: Fix the display of client addresses.
267 They were truncated to 31 characters which is not enough for IPv6 addresses.
268 PR 54848 [Bernhard Schmidt <berni birkenwald de>]
270 *) core: Add ap_log_data(), ap_log_rdata(), etc. for logging buffers.
273 *) mod_unique_id: Use output of the PRNG rather than IP address and
274 pid, avoiding sleep() call and possible DNS issues at startup,
275 plus improving randomness for IPv6-only hosts.
276 [Jan Kaluza <jkaluza redhat.com>]
278 *) mod_authnz_ldap: Support primitive LDAP servers that do not accept
279 filters, such as "SDBM-backed LDAP" on z/OS, by allowing a special
280 filter "none" to be specified in AuthLDAPURL. [Eric Covener]
282 *) mod_file_cache: mod_file_cache should be able to serve files that
283 haven't had a Content-Type set via e.g. mod_mime. [Eric Covener]
285 *) core: merge AllowEncodedSlashes from the base configuration into
286 virtual hosts. [Eric Covener]
288 *) AIX: Install DSO's with "cp" instead of "install" in instdso.sh
291 *) mod_ldap: Don't keep retrying if a new LDAP connection times out.
294 *) mod_deflate: permit compilation of mod_deflate against a zlib that has
295 been configured with -D Z_PREFIX, which redefines the token "deflate".
298 *) mod_auth_digest: Use the secret when generating nonces in all cases and
299 not only when AuthName is used in .htaccess files (this change may cause
300 problems if used with round robin load balancers). Don't regenerate the
301 secret on graceful restarts. PR 54637 [Stefan Fritsch]
303 *) core: Remove apr_brigade_flatten(), buffering and duplicated code
304 from the HTTP_IN filter, parse chunks in a single pass with zero copy.
305 Reduce memory usage by 48 bytes per request. [Graham Leggett]
307 *) core: Stop the HTTP_IN filter from attempting to write error buckets
308 to the output filters, which is bogus in the proxy case. Create a
309 clean mapping from APR codes to HTTP status codes, and use it where
310 needed. [Graham Leggett]
312 *) mod_proxy: Ensure network errors detected by the proxy are returned as
313 504 Gateway Timout as opposed to 502 Bad Gateway, in order to be
314 compliant with RFC2616 14.9.4 Cache Revalidation and Reload Controls.
316 *) mod_dav: mod_dav overrides dav_fs response on PUT failure. PR 35981
317 [Basant Kumar Kukreja <basant.kukreja sun.com>, Alejandro Alvarez
318 <alejandro.alvarez.ayllon cern.ch>]
320 *) mod_ldap: LDAP connections used for authentication were not respecting
321 LDAPConnectionPoolTimeout. PR 54587
323 *) core: ap_rgetline_core now pulls from r->proto_input_filters.
325 *) mod_proxy_html: process parsed comments immediately.
326 Fixes bug where parsed comments may be lost. [Nick Kew]
328 *) mod_proxy_html: introduce doctype for HTML 5 [Nick Kew]
330 *) mod_proxy_html: fix typo-bug processing "strict" vs "transitional"
331 HTML/XHTML [Nick Kew]
333 *) core: Add option to add valgrind support. Use it to reduce false positive
334 warnings in mod_ssl. [Stefan Fritsch]
336 *) mod_authn_file, mod_authn_dbd, mod_authn_dbm, mod_authn_socache:
337 Cache the result of the most recent password hash verification for every
338 keep-alive connection. This saves some expensive calculations.
341 *) http: Remove support for Request-Range header sent by Navigator 2-3 and
342 MSIE 3. [Stefan Fritsch]
344 *) core, http: Extend HttpProtocol with an option to enforce stricter HTTP
345 conformance or to only log the found problems. [Stefan Fritsch]
347 *) core: Correctly parse an IPv6 literal host specification in an absolute
348 URL in the request line. [Stefan Fritsch]
352 *) core: Add LogLevelOverride directive that allows to override the
353 loglevel for clients from certain IPs. This also works for things
354 like the SSL handshake where <If> LogLevel ... </If> is evaluated
355 too late. [Stefan Fritsch]
357 *) core: Add new directive Warning to issue warnings from a configuration
358 file. Both Warning and Error now generate a timestamped log message.
361 *) ap_expr: Add SERVER_PROTOCOL_VERSION, ..._MAJOR, and ..._MINOR
362 variables. [Stefan Fritsch]
364 *) core: New directive RegisterHttpMethod for registering non-standard
365 HTTP methods. [Stefan Fritsch]
367 *) core: New directive HttpProtocol which allows to disable HTTP/0.9
368 support. [Stefan Fritsch]
370 *) mod_allowhandlers: New module to forbid specific handlers for specific
371 directories. [Stefan Fritsch]
373 *) mod_systemd: New module, for integration with systemd on Linux.
374 [Jan Kaluza <jkaluza redhat.com>]
376 *) WinNT MPM: Store pid and generation for each thread in scoreboard
377 to allow tracking of threads from exiting children via mod_status
378 or other such mechanisms. [Jeff Trawick]
380 *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR:
381 - APIs: ap_log_pid(), ap_remove_pid, ap_read_pid()
382 - core: the scoreboard (ScoreBoardFile), pid file (PidFile), and
384 - mod_cache: thundering herd lock directory
385 - mod_lbmethod_heartbeat, mod_heartmonitor: heartbeat storage file
386 - mod_ldap: shared memory cache
387 - mod_socache_shmcb, mod_socache_dbm: shared memory or dbm for cache
390 *) suexec: Add --enable-suexec-capabilites support on Linux, to use
391 setuid/setgid capability bits rather than a setuid root binary.
394 *) suexec: Add support for logging to syslog as an alternative to logging
395 to a file; configure --without-suexec-logfile --with-suexec-syslog.
398 *) mod_ssl: Add support for TLS Next Protocol Negotiation. PR 52210.
399 [Matthew Steele <mdsteele google.com>]
401 *) cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will
402 be compiled by the build compiler instead of the host compiler.
403 Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected.
404 PR 51257. [Guenter Knauf]
406 *) core: In maintainer mode, replace apr_palloc with a version that
407 initializes the allocated memory with non-zero values, except if
408 AP_DEBUG_NO_ALLOC_POISON is defined. [Stefan Fritsch]
410 *) mod_policy: Add a new testing module to help server administrators
411 enforce a configurable level of protocol compliance on their
412 servers and application servers behind theirs. [Graham Leggett]
414 *) mod_firehose: Add a new debugging module able to record traffic
415 passing through the server in such a way that connections and/or
416 requests be reconstructed and replayed. [Graham Leggett]
426 [Apache 2.5.0-dev includes those bug fixes and changes with the
427 Apache 2.4.xx tree as documented below, except as noted.]
429 Changes with Apache 2.4.x and later:
431 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?view=markup
433 Changes with Apache 2.2.x and later:
435 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup
437 Changes with Apache 2.0.x and later:
439 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup
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