2 Changes with Apache 2.5.0
4 *) mod_ssl: Add "no_crl_for_cert_ok" flag to SSLCARevocationCheck directive
5 to opt-in previous behaviour (2.2) with CRLs verification when checking
6 certificate(s) with no corresponding CRL. [Yann Ylavic]
8 *) mod_proxy_http2: rescheduling of requests that have not been processed
9 by the backend when receiving a GOAWAY frame before done.
12 *) core: Split ap_create_request() from ap_read_request(). [Graham Leggett]
14 *) mod_ssl: Don't lose track of the SSL context if the ssl_run_pre_handshake()
15 hook returns an error. [Graham Leggett]
17 *) ab: Use caseless matching for HTTP tokens (e.g. content-length). PR 59111.
20 *) mod_ssl: Fix a possible memory leak on restart for custom [EC]DH params.
21 [Jan Kaluza, Yann Ylavic]
23 *) mod_auth_digest: Fix compatibility with expression-based Authname. PR59039.
26 *) mpm: Add a complete_connection hook that confirms whether an MPM is allowed
27 to leave the WRITE_COMPLETION phase. Move filter code out of the MPMs.
30 *) mod_proxy_http2: using single connection for several requests *if*
31 master connection uses HTTP/2 itself. Not yet hardened under load.
34 *) core: Added support for HTTP code 451. PR58985.
35 [Yehuda Katz <yehuda ymkatz.net>, Jim Jagielski]
37 *) mod_ssl: Add support for OpenSSL 1.1.0. [Rainer Jung]
39 *) mod_proxy_http2: new experimental http2 proxy module for h2: and h2c: proxy
40 urls. Uses, so far, one connection per request, reuses connections.
43 *) event: use pre_connection hook to properly initialize connection state for
44 slave connections. use protocol_switch hook to initialize server config
45 early based on SNI selected vhost.
48 *) mod_filter: Fix AddOutputFilterByType with non-content-level filters.
49 PR58856 [Micha Lenk <micha lenk.info>]
51 *) mod_cache: Consider Cache-Control: s-maxage in expiration
52 calculations. [Eric Covener]
54 *) mod_cache: Allow caching of responses with an Expires header
55 in the past that also has Cache-Control: max-age or s-maxage.
56 PR55156. [Eric Covener]
58 *) ap_expr: expression support for variable HTTP2=on|off
61 *) mod_proxy_hcheck: Provide for dynamic background health
62 checks on reverse proxies associated with BalancerMember
63 workers. [Jim Jagielski]
65 *) Added many log numbers to log statements that had none.
67 *) core: Add expression support to SetHandler.
70 *) mod_session: Introduce SessionExpiryUpdateInterval which allows to
71 configure the session/cookie expiry's update interval. PR 57300.
72 [Paul Spangler <paul.spangler ni.com>]
74 *) core: Extend support for asynchronous write completion from the
75 network filter to any connection or request filter. [Graham Leggett]
77 *) mpm_event: Free memory earlier when shutting down processes.
80 *) core/util_script: relax alphanumeric filter of environment variable names
81 on Windows to allow '(' and ')' for passing PROGRAMFILES(X86) et.al.
82 unadulterated in 64 bit versions of Windows. PR 46751.
83 [John <john leineweb de>]
85 *) mod_auth_digest: remove AuthDigestEnableQueryStringHack which is no
86 more documented since dec 2012 (r1415960). [Christophe Jaillet]
88 *) mod_charset_lite: On EBCDIC platforms, make sure mod_charset_lite runs
89 after other resource-level filters. [Eric Covener]
91 *) mod_dir: Responses that go through "FallbackResource" might appear to
92 hang due to unterminated chunked encoding. PR58292. [Eric Covener]
94 *) mod_substitute: Fix configuraton merge order.
95 PR 57641 [<Marc.Stern approach.be>]
97 *) mod_ssl: When SSLVerify is disabled (NONE), don't force a renegotiation if
98 the SSLVerifyDepth applied with the default/handshaken vhost differs from
99 the one applicable with the finally selected vhost. [Yann Ylavic]
101 *) http: Don't remove the Content-Length of zero from a HEAD response if
102 it comes from an origin server, module or script. [Yann Ylavic]
104 *) http: Add support for RFC2324/RFC7168. [Graham Leggett]
106 *) mod_rewrite: Add support for starting External Rewriting Programs
107 as non-root user on UNIX systems by specifying username and group name
108 as third argument of RewriteMap directive. [Jan Kaluza]
110 *) mod_authn_core: Add expression support to AuthName and AuthType.
113 *) suexec: Filter out the HTTP_PROXY environment variable because it is
114 treated as alias for http_proxy by some programs. [Stefan Fritsch]
116 *) mod_proxy_http: Don't establish or reuse a backend connection before pre-
117 fetching the request body, so to minimize the delay between it is supposed
118 to be alive and the first bytes sent: this is a best effort to prevent the
119 backend from closing because of idle or keepalive timeout in the meantime.
120 Also, handle a new "proxy-flushall" environment variable which allows to
121 flush any forwarded body data immediately. PR 56541+37920. [Yann Ylavic]
123 *) core: Define and UnDefine are no longer permitted in
124 directory context. Previously they would always be evaulated
125 as the configuration was read without regard for the directory
126 context. [Eric Covener]
128 *) config: For directives that do not expect any arguments, enforce
129 that none are specified in the configuration file.
130 [Joachim Zobel <jzobel heute-morgen.de>, Eric Covener]
132 *) mod_rewrite: Improve 'bad flag delimeters' startup error by showing
133 how the input was tokenized. PR 56528. [Edward Lu <Chaosed0 gmail.com>]
135 *) mod_proxy: Don't put non balancer-member workers in error state by
136 default for connection or 500/503 errors, and honor status=+I for
137 any error. PR 48388. [Yann Ylavic]
139 *) mod_socache_memcache: Pass expiration time through to memcached. PR 55445.
140 [Faidon Liambotis <paravoid debian.org>, Joe Orton]
142 *) ap_expr: Add filemod function for checking file modification dates
145 *) mod_authnz_ldap: Resolve crashes with LDAP authz and non-LDAP authn since
146 r1608202. [Eric Covener]
148 *) core: Ensure that httpd exits with an error status when the MPM fails
149 to run. [Yann Ylavic]
151 *) apreq: Content-Length header should be always interpreted as a decimal.
152 Leading 0 could be erroneously considered as an octal value. PR 56598.
153 [Chris Card <ctcard hotmail com>]
155 *) mod_proxy: Now allow for 191 character worker names, with non-fatal
156 errors if name is truncated. PR53218. [Jim Jagielski]
158 *) mod_ssl: Add optional function "ssl_get_tls_cb" to allow support
159 for channel bindings. [Simo Sorce <simo redhat.com>]
161 *) mod_proxy_wstunnel: Concurrent websockets messages could be
162 lost or delayed with ProxyWebsocketAsync enabled.
163 [Edward Lu <Chaosed0 gmail.com>]
165 *) core, mod_info: Add compiled and loaded PCRE versions to version
166 number display. [Rainer Jung]
168 *) mod_authnz_ldap: Return LDAP connections to the pool before the handler
169 is run, instead of waiting until the end of the request. [Eric Covener]
171 *) mod_proxy_html: support automatic detection of doctype and processing
172 of FPIs. PR56285 [Micha Lenk <micha lenk info>, Nick Kew]
174 *) mod_proxy_html: skip documents shorter than 4 bytes
175 PR 56286 [Micha Lenk <micha lenk info>]
177 *) mod_proxy_fdpass: Fix computation of the size of 'struct sockaddr_un'
178 when passed to 'connect()'.
179 [Graham Dumpleton <grahamd apache org>]
181 *) core: Add ap_mpm_resume_suspended() API to allow a suspended connection
183 [Artem <artemciy gmail.com>, Edward Lu <Chaosed0 gmail.com>]
185 *) core: Add ap_mpm_register_socket_callback_timeout() API. [Eric Covener]
187 *) mod_proxy_wstunnel: Honor ProxyWebsocketIdleTimeout in asynchronous
188 processing mode. [Eric Covener]
190 *) mod_authnz_ldap: Fail explicitly when the filter is too long. Remove
191 unnecessary apr_pstrdup() and strlen(). [Graham Leggett]
193 *) Add the ldap-search option to mod_authnz_ldap, allowing authorization
194 to be based on arbitrary expressions that do not include the username.
197 *) Add the ldap function to the expression API, allowing LDAP filters and
198 distinguished names based on expressions to be escaped correctly to
199 guard against LDAP injection. [Graham Leggett]
201 *) Add module mod_ssl_ct, which provides an implementation of Certificate
202 Transparency (RFC 6962) for httpd. [Jeff Trawick]
204 *) mod_remoteip: Prevent an external proxy from presenting an internal
205 proxy. PR 55962. [Mike Rumph]
207 *) mod_ssl: Add hooks to allow other modules to perform processing at
208 several stages of initialization and connection handling. See
209 mod_ssl_openssl.h. [Jeff Trawick]
211 *) mod_proxy_wstunnel: Avoid sending error responses down an upgraded
212 websockets connection as it is being close down. [Eric Covener]
214 *) mod_proxy_wstunnel: Allow the administrator to cap the amount
215 of time a synchronous websockets connection stays idle with
216 ProxyWebsocketIdleTimeout. [Eric Covener]
218 *) mod_proxy_wstunnel: Change to opt-in for asynchronous support, adding
219 directives ProxyWebsocketAsync and ProxyWebsocketAsyncDelay.
222 *) mod_proxy_wstunnel: Stop leaking websockets backend connections under
223 event MPM (trunk-only). [Eric Covener]
225 *) mod_proxy_http: Add detach_backend hook (potentially usable
226 in other proxy scheme handlers). [Jeff Trawick]
228 *) mod_deflate: Add DeflateAlterETag to control how the ETag
229 is modified. The 'NoChange' parameter mimics 2.2.x behavior.
230 PR 45023, PR 39727. [Eric Covener]
232 *) mod_rewrite: Add 'BNF' (backreferences-no-plus) flag to RewriteRule to
233 allow spaces in backreferences to be encoded as %20 instead of '+'.
236 *) mod_rewrite: Support an optional list of characters to escape in the
237 argument for the 'B' (escape backreferences) flag. [Eric Covener]
239 *) mod_dir: Default to 2.2-like behavior and skip execution when method is
240 neither GET nor POST, such as for DAV requests. PR 54914. [Chris Darroch]
242 *) mod_rewrite: Rename the handler that does per-directory internal
243 redirects to "rewrite-redirect-handler" from "redirect-handler" so
244 it is less ambiguous and less likely to be reused. [Eric Covener]
246 *) mod_rewrite: Protect against looping with the [N] flag by enforcing a
247 default limit of 10000 iterations, and allowing each rule to change its
248 limit. [Eric Covener]
250 *) mod_ssl: Fix config merging of SSLOCSPEnable and SSLOCSPOverrideResponder.
253 *) Add HttpContentLengthHeadZero and HttpExpectStrict directives.
254 [Yehuda Sadeh <yehuda inktank com>, Justin Erenkrantz]
256 *) mod_ssl: Add -t -DDUMP_CA_CERTS option which dumps the filenames of all
257 configured SSL CA certificates to stdout the same way as DUMP_CERTS does.
260 *) mod_ssl: Don't flush when an EOS is received. Prepares mod_ssl
261 to support write completion. [Graham Leggett]
263 *) core: Add parse_errorlog_arg callback to ap_errorlog_provider
264 to allow providers to check the ErrorLog argument. [Jan Kaluza]
266 *) mod_cgid: Use the servers Timeout for each read from a CGI script,
267 allow override with new CGIDRequestTimeout directive. PR43494
268 [Eric Covener, Toshikuni Fukaya <toshikuni-fukaya cybozu co jp>]
270 *) core: ensure any abnormal exit is reported to stderr if it's a tty.
273 *) mod_lua: Let the Inter-VM get/set functions work with a global
274 shared memory pool instead of a per-process pool. [Daniel Gruno]
276 *) ldap: Support ldaps when using the Microsoft LDAP SDK.
277 PR 54626. [Jean-Frederic Clere]
279 *) mod_authnz_ldap: Change default value of AuthLDAPMaxSubGroupDepth to 0
280 to avoid performance problems when subgroups aren't in use. [Eric Covener]
282 *) mod_syslog: New module implementing syslog ap_error_log provider.
283 Previously, this code was part of core, now it's in separate module.
286 *) core: Add ap_errorlog_provider to make ErrorLog logging modular. Move
287 syslog support from core to new mod_syslog. [Jan Kaluza]
289 *) mod_status, mod_echo: Fix the display of client addresses.
290 They were truncated to 31 characters which is not enough for IPv6 addresses.
291 PR 54848 [Bernhard Schmidt <berni birkenwald de>]
293 *) mod_unique_id: Use output of the PRNG rather than IP address and
294 pid, avoiding sleep() call and possible DNS issues at startup,
295 plus improving randomness for IPv6-only hosts.
296 [Jan Kaluza <jkaluza redhat.com>]
298 *) mod_file_cache: mod_file_cache should be able to serve files that
299 haven't had a Content-Type set via e.g. mod_mime. [Eric Covener]
301 *) core: merge AllowEncodedSlashes from the base configuration into
302 virtual hosts. [Eric Covener]
304 *) AIX: Install DSO's with "cp" instead of "install" in instdso.sh
307 *) mod_ldap: Don't keep retrying if a new LDAP connection times out.
310 *) mod_deflate: permit compilation of mod_deflate against a zlib that has
311 been configured with -D Z_PREFIX, which redefines the token "deflate".
314 *) mod_auth_digest: Use the secret when generating nonces in all cases and
315 not only when AuthName is used in .htaccess files (this change may cause
316 problems if used with round robin load balancers). Don't regenerate the
317 secret on graceful restarts. PR 54637 [Stefan Fritsch]
319 *) core: Remove apr_brigade_flatten(), buffering and duplicated code
320 from the HTTP_IN filter, parse chunks in a single pass with zero copy.
321 Reduce memory usage by 48 bytes per request. [Graham Leggett]
323 *) core: Stop the HTTP_IN filter from attempting to write error buckets
324 to the output filters, which is bogus in the proxy case. Create a
325 clean mapping from APR codes to HTTP status codes, and use it where
326 needed. [Graham Leggett]
328 *) mod_proxy: Ensure network errors detected by the proxy are returned as
329 504 Gateway Timout as opposed to 502 Bad Gateway, in order to be
330 compliant with RFC2616 14.9.4 Cache Revalidation and Reload Controls.
332 *) mod_dav: mod_dav overrides dav_fs response on PUT failure. PR 35981
333 [Basant Kumar Kukreja <basant.kukreja sun.com>, Alejandro Alvarez
334 <alejandro.alvarez.ayllon cern.ch>]
336 *) mod_ldap: LDAP connections used for authentication were not respecting
337 LDAPConnectionPoolTimeout. PR 54587
339 *) core: ap_rgetline_core now pulls from r->proto_input_filters.
341 *) mod_proxy_html: process parsed comments immediately.
342 Fixes bug where parsed comments may be lost. [Nick Kew]
344 *) mod_proxy_html: introduce doctype for HTML 5 [Nick Kew]
346 *) mod_proxy_html: fix typo-bug processing "strict" vs "transitional"
347 HTML/XHTML [Nick Kew]
349 *) core: Add option to add valgrind support. Use it to reduce false positive
350 warnings in mod_ssl. [Stefan Fritsch]
352 *) mod_authn_file, mod_authn_dbd, mod_authn_dbm, mod_authn_socache:
353 Cache the result of the most recent password hash verification for every
354 keep-alive connection. This saves some expensive calculations.
357 *) http: Remove support for Request-Range header sent by Navigator 2-3 and
358 MSIE 3. [Stefan Fritsch]
360 *) core, http: Extend HttpProtocol with an option to enforce stricter HTTP
361 conformance or to only log the found problems. [Stefan Fritsch]
363 *) core: Correctly parse an IPv6 literal host specification in an absolute
364 URL in the request line. [Stefan Fritsch]
368 *) core: Add LogLevelOverride directive that allows to override the
369 loglevel for clients from certain IPs. This also works for things
370 like the SSL handshake where <If> LogLevel ... </If> is evaluated
371 too late. [Stefan Fritsch]
373 *) core: Add new directive Warning to issue warnings from a configuration
374 file. Both Warning and Error now generate a timestamped log message.
377 *) ap_expr: Add SERVER_PROTOCOL_VERSION, ..._MAJOR, and ..._MINOR
378 variables. [Stefan Fritsch]
380 *) core: New directive RegisterHttpMethod for registering non-standard
381 HTTP methods. [Stefan Fritsch]
383 *) core: New directive HttpProtocol which allows to disable HTTP/0.9
384 support. [Stefan Fritsch]
386 *) mod_allowhandlers: New module to forbid specific handlers for specific
387 directories. [Stefan Fritsch]
389 *) mod_systemd: New module, for integration with systemd on Linux.
390 [Jan Kaluza <jkaluza redhat.com>]
392 *) WinNT MPM: Store pid and generation for each thread in scoreboard
393 to allow tracking of threads from exiting children via mod_status
394 or other such mechanisms. [Jeff Trawick]
396 *) The following now respect DefaultRuntimeDir/DEFAULT_REL_RUNTIMEDIR:
397 - APIs: ap_log_pid(), ap_remove_pid, ap_read_pid()
398 - mod_cache: thundering herd lock directory
399 - mod_lbmethod_heartbeat, mod_heartmonitor: heartbeat storage file
400 - mod_ldap: shared memory cache
401 - mod_socache_shmcb, mod_socache_dbm: shared memory or dbm for cache
404 *) suexec: Add --enable-suexec-capabilites support on Linux, to use
405 setuid/setgid capability bits rather than a setuid root binary.
408 *) suexec: Add support for logging to syslog as an alternative to logging
409 to a file; configure --without-suexec-logfile --with-suexec-syslog.
412 *) mod_ssl: Add support for TLS Next Protocol Negotiation. PR 52210.
413 [Matthew Steele <mdsteele google.com>]
415 *) cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will
416 be compiled by the build compiler instead of the host compiler.
417 Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected.
418 PR 51257. [Guenter Knauf]
420 *) core: In maintainer mode, replace apr_palloc with a version that
421 initializes the allocated memory with non-zero values, except if
422 AP_DEBUG_NO_ALLOC_POISON is defined. [Stefan Fritsch]
424 *) mod_policy: Add a new testing module to help server administrators
425 enforce a configurable level of protocol compliance on their
426 servers and application servers behind theirs. [Graham Leggett]
428 *) mod_firehose: Add a new debugging module able to record traffic
429 passing through the server in such a way that connections and/or
430 requests be reconstructed and replayed. [Graham Leggett]
440 [Apache 2.5.0-dev includes those bug fixes and changes with the
441 Apache 2.4.xx tree as documented below, except as noted.]
443 Changes with Apache 2.4.x and later:
445 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.4.x/CHANGES?view=markup
447 Changes with Apache 2.2.x and later:
449 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/CHANGES?view=markup
451 Changes with Apache 2.0.x and later:
453 *) http://svn.apache.org/viewvc/httpd/httpd/branches/2.0.x/CHANGES?view=markup