1 APACHE 2.4 STATUS: -*- mode: text; coding: utf-8 -*-
2 Last modified at [$Date$]
4 The current version of this file can be found at:
6 * http://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x/STATUS
8 The current development branch of this software can be found at:
10 * http://svn.apache.org/repos/asf/httpd/httpd/trunk
12 Consult the following STATUS files for information on related projects:
14 * http://svn.apache.org/repos/asf/apr/apr/trunk/STATUS
15 * http://svn.apache.org/repos/asf/apr/apr/branches/1.4.x/STATUS
16 * http://svn.apache.org/repos/asf/apr/apr-util/branches/1.4.x/STATUS
17 * http://svn.apache.org/repos/asf/apr/apr/branches/1.5.x/STATUS
18 * http://svn.apache.org/repos/asf/apr/apr-util/branches/1.5.x/STATUS
19 * http://svn.apache.org/repos/asf/apr/apr/branches/1.6.x/STATUS
20 * http://svn.apache.org/repos/asf/apr/apr-util/branches/1.6.x/STATUS
22 Patches considered for backport are noted in their branches' STATUS:
24 * http://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x/STATUS
25 * http://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x/STATUS
29 [NOTE that x.{odd}.z versions are strictly Alpha/Beta releases,
30 while x.{even}.z versions are Stable/GA releases.]
32 2.4.29 : In development.
33 2.4.28 : Tagged on September 25, 2017. Released on October 5, 2017.
34 2.4.27 : Tagged on July 6, 2017. Released on July 11, 2017.
35 2.4.26 : Tagged on June 13, 2017. Released on June 19, 2017.
36 2.4.25 : Tagged on December 16, 2016. Released on December 21, 2016.
37 2.4.24 : Tagged on December 16, 2016, not released.
38 2.4.23 : Tagged on June 30, 2016. Released on July 05, 2016.
39 2.4.22 : Tagged on June 20, 2016, not released.
40 2.4.21 : Tagged on June 16, 2016, not released.
41 2.4.20 : Tagged on April 4, 2016. Released on April 11, 2016.
42 2.4.19 : Tagged on March 21, 2016, not released.
43 2.4.18 : Tagged on December 8, 2015. Released on December 14, 2015.
44 2.4.17 : Tagged on October 9, 2015. Released October 13, 2015.
45 2.4.16 : Tagged on July 9, 2015. Released July 15, 2015
46 2.4.15 : Tagged on June 19, 2015. Not released.
47 2.4.14 : Tagged on June 11, 2015. Not released.
48 2.4.13 : Tagged on June 4, 2015. Not released.
49 2.4.12 : Tagged on January 22, 2015. Released Jan 29, 2015
50 2.4.11 : Tagged on January 15, 2015. Not released.
51 2.4.10 : Tagged on July 15, 2014. Released July 21, 2014
52 2.4.9 : Tagged on March 13, 2014. Released on March 17, 2014
53 2.4.8 : Tagged on March 11, 2014. Not released.
54 2.4.7 : Tagged on November 19, 2013. Released on Nov 25, 2013
55 2.4.6 : Tagged on July 15, 2013. Released July, 22, 2013
56 2.4.5 : Tagged on July 11, 2013, not released.
57 2.4.4 : Tagged on February 18, 2013. Released Feb 25, 2013
58 2.4.3 : Tagged on August 17, 2012. Released Aug 18, 2012
59 2.4.2 : Tagged on April 5, 2012. Released Apr 17, 2012.
60 2.4.1 : Tagged on February 13, 2012. Released Feb 21, 2012.
61 2.4.0 : Tagged on January 16, 2012, not released.
62 2.3.16 : Tagged on December 15, 2011.
63 2.3.15 : Tagged on November 8, 2011. Released Nov. 15, 2011.
64 2.3.14 : Tagged on August 1, 2011. Released Aug. 9, 2011.
65 2.3.13 : Tagged on June 28, 2011, not released.
66 2.3.12 : Tagged on May 11, 2011. Released May 23, 2011.
67 2.3.11 : Released as Beta on March 7, 2011.
68 2.3.10 : Tagged on December 13, 2010. Released Dec 21, 2010.
69 2.3.9 : Tagged on November 23, 2010, not released.
70 2.3.8 : Tagged on August 24, 2010.
71 2.3.7 : Tagged on August 19, 2010, not released.
72 2.3.6 : Released on June 21, 2010.
73 2.3.5 : Released on January 26, 2010.
74 2.3.4 : Released on December 8, 2009.
75 2.3.3 : Tagged on November 11, 2009, not released.
76 2.3.2 : Tagged on March 23, 2009, not released.
77 2.3.1 : Tagged on January 2, 2009, not released.
78 2.3.0 : Tagged on December 6, 2008, not released.
80 Contributors looking for a mission:
82 * Just do an egrep on "TODO" or "XXX" in the source.
84 * Review the bug database at: http://issues.apache.org/bugzilla/
86 * Review the "PatchAvailable" bugs in the bug database:
88 https://issues.apache.org/bugzilla/buglist.cgi?bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&product=Apache+httpd-2&keywords=PatchAvailable
90 After testing, you can append a comment saying "Reviewed and tested".
92 * Open bugs in the bug database.
94 * See also the STATUS file in the docs/ directory, which lists documentation-specific TODO items.
97 CURRENT RELEASE NOTES:
99 * Forward binary compatibility is expected of Apache 2.4.x releases, such
100 that no MMN major number changes will occur after 2.4.1. Such changes can
101 only be made in the trunk.
103 * All commits to branches/2.4.x must be reflected in SVN trunk,
104 as well, if they apply. Logical progression is commit to trunk
105 then merge into branches/2.4.x, as applicable.
107 * Current exceptions for RTC for this branch:
112 . non-Unix, single-platform code
114 RELEASE SHOWSTOPPERS:
116 *) configure.in: Latest macOS Xcode 9 installs clang-900, which more
117 fully honors strict-prototypes, which causes AC_CHECK_LIB to
118 fail when --enable-maintainer-mode is set. Also affects clang 5.
119 trunk patch: http://svn.apache.org/r1810448
120 http://svn.apache.org/r1810998
121 2.4.x patch: svn merge -c 1810448,1810998 ^/httpd/httpd/trunk .
123 [Not a regression, so how a showstopper? This seems to fit into the mold
124 of per-platform quirks which we process in CTR flow, adding a +1 to note
125 that the patch looks sane.]
128 PATCHES ACCEPTED TO BACKPORT FROM TRUNK:
129 [ start all new proposals below, under PATCHES PROPOSED. ]
131 *) mod_http2: Fix race condition on request body handling.
132 2.4.x patch: svn merge -c 1804096,1807238,1809981,1810088,1810089 ^/httpd/httpd/trunk .
133 +1: icing, steffenal, ylavic
135 *) mod_rewrite,core: Avoid the 'Vary: Host' response header when HTTP_HOST
136 is used in a condition that evaluates to true.
137 trunk patch: http://svn.apache.org/r1808746
138 http://svn.apache.org/r1809028
139 2.4.x patch: svn merge -c 1808746,1809028 ^/httpd/httpd/trunk .
140 +1: elukey, ylavic, wrowe
143 PATCHES PROPOSED TO BACKPORT FROM TRUNK:
144 [ New proposals should be added at the end of the list ]
146 *) mod_proxy, mod_ssl: Handle SSLProxy* directives in <Proxy> sections,
147 allowing per backend TLS configuration.
148 trunk patch: http://svn.apache.org/r1740928
149 http://svn.apache.org/r1740960
150 http://svn.apache.org/r1740967
151 http://svn.apache.org/r1740987
152 http://svn.apache.org/r1740998
153 http://svn.apache.org/r1742697
154 http://svn.apache.org/r1756976
155 http://svn.apache.org/r1781313
156 2.4.x patch: http://home.apache.org/~ylavic/patches/httpd-2.4.x-r1740928_and_co-v3.patch
158 mrumph: Since this has been sitting for awhile, there are several places
159 where this patch needs to be adjusted against recent changes to 2.4.x.
160 ylavic: With current 2.4.x (r1807662), there seems to be only a conflict with
161 MMN, which can probably be taken by the backporter. I don't see the
162 other places where it needs adjustments, Mike?
163 wrowe: Suspect that this is an MMN Major bump, not minor, without some
164 additional detection/workaround of legacy 2.4 compiled modules.
166 *) mod_remoteip: Add PROXY protocol support
167 trunk patch: http://svn.apache.org/r1776575
168 http://svn.apache.org/r1776578 (doc fix)
169 http://svn.apache.org/r1776627 (shortened name + doc fix)
170 http://svn.apache.org/r1776674 (attribution moved to CHANGES)
171 http://svn.apache.org/r1776740 (attribution updated in mod_remotip.c)
172 http://svn.apache.org/r1778268 (fix compiler warning)
173 http://svn.apache.org/r1780725 (set buckets aside)
174 http://svn.apache.org/r1781030 (fix strict GCC warning)
175 http://svn.apache.org/r1781031 (reference the filter by handle)
176 http://svn.apache.org/r1781701 (rework optional processing case)
177 http://svn.apache.org/r1788674 (final edge cases/ignore slave conns)
178 http://svn.apache.org/r1789800 (remove optional processing)
179 http://svn.apache.org/r1790169 (rename "exception" directive)
180 http://svn.apache.org/r1790457 (Update directive name in err message)
181 http://svn.apache.org/r1806985
182 2.4 convenience patch (includes CHANGES):
183 http://home.apache.org/~jim/patches/RemoteIPProxyProtocol.2.4.x.patch
184 http://svn.apache.org/r1806985
186 mrumph: I had a chance to review this proposal.
187 I committed some suggested changes to trunk in r1806985.
188 Also, the copyright in mod_remoteip.c is of some concern.
189 Perhaps the terms of the copyright should be included in that note.
190 And on a personal note, today is my last day with Oracle.
191 So it may well be my last day with Apache as well.
192 It has been great working with all of you.
193 jim: Not sure what the copyright concern is, but added r1806985
195 ylavic: RemoteIPProxyProtocol* are documented as scoped to server config
196 and virtual host, though using ap_server_conf makes them global
197 only (thus less useful too...).
199 *) mod_journald: Add new module mod_journald to log error logs into journald.
200 trunk patch: http://svn.apache.org/r1610339
201 http://svn.apache.org/r1621806
202 2.4.x patch: http://people.apache.org/~jkaluza/patches/httpd-2.4.x-mod_journald.patch
204 jchampion: Looks like the headers require GCC extensions to compile, so
205 mod_journald can't be configured in maintainer mode (-std=c89).
206 Can anyone else reproduce, or is it just my distro?
208 *) mod_unique_id: Use PRNG output rather than needing to use DNS,
209 an IPv4 address (or failing) and PID, and slowing down startup
211 trunk patch: http://svn.apache.org/r1501827
212 2.4.x patch: trunk works
215 *) core/mod_ssl: Add new flag int to module struct. Define first bit for keeping
216 server config records non-shared instances, set for mod_ssl to make manipulations
218 trunk patch: svn merge -c 1809302,1809303,1809305,1809311,1809314,1809713 ^/httpd/httpd/trunk .
219 2.4.x patch: https://svn.apache.org/repos/asf/httpd/httpd/patches/2.4.x/backport-module-flags.diff
220 (merge with alterations for mmn etc.)
224 PATCHES/ISSUES THAT ARE BEING WORKED
225 [ New entries should be added at the START of the list ]
227 *) mod_ssl: Return 502 instead of 500 when SSL peer check or
228 proxy_post_handshake hook fails.
229 Trunk patch: r1645529 (works)
230 2.4.x patch which adds CHANGES: https://emptyhammock.com/media/downloads/r1645529-to-2.4.x.txt
232 ylavic: there may be missing bits, see thread for commit r1736510.
234 *) core: Drop an invalid Last-Modified header value coming
235 from a (F)CGI script instead of replacing it with Unix epoch.
236 Warn the users about Last-Modified header value replacements
237 and violations of the RFC.
238 trunk patch: http://svn.apache.org/r1748379
239 http://svn.apache.org/r1750747
240 http://svn.apache.org/r1750749
241 http://svn.apache.org/r1750953
242 http://svn.apache.org/r1751138
243 http://svn.apache.org/r1751139
244 http://svn.apache.org/r1751147
245 http://svn.apache.org/r1757818
246 2.4.x: trunk patches work, final view:
247 http://home.apache.org/~elukey/httpd-2.4.x-core-last_modified_tz_logging.patch
248 The problem has been discussed in dev@ extensively but we did not reach a common
249 agreement about how to proceed in the long term. While we wait, I would really like
250 to introduce useful logs for the users (the starting point of this change was a users@
251 email thread). If this is not the right way to go I will move the patch to other
252 sections of STATUS (stalled or being worked).
253 The code has been tested with a simple PHP script returning different Last-Modified
254 headers (GMT now, GMT now Europe/Paris, GMT tomorrow, GMT yesterday, PST now).
257 *) http: Don't remove the Content-Length of zero from a HEAD response if
258 it comes from an origin server, module or script. Allow the previous
259 behaviour (for legacy/buggy modules only, not origin) by also backporting
260 the HttpContentLengthHeadZero directive (and also HttpExpectStrict which
261 comes for free with the same commit).
262 trunk patch: http://svn.apache.org/r1554303
263 http://svn.apache.org/r1678215
264 2.4.x patch: http://people.apache.org/~ylavic/httpd-2.4.x-preserve_head_cl_zero.patch
266 ylavic: r1554303 issued a major MMN bump, but since the ABI change is two
267 ints added at the end of core_server_config, the proposed merge
268 does a minor bump only.
269 minfrin: Two new directives need to be documented.
271 * mod_proxy_http: Don't establish or reuse a backend connection before pre-
272 fetching the request body, so to minimize the delay between it is supposed
273 to be alive and the first bytes sent: this is a best effort to prevent the
274 backend from closing because of idle or keepalive timeout in the meantime.
275 Also, handle a new "proxy-flushall" environment variable which allows to
276 flush any forwarded body data immediately. PR 56541+37920.
277 trunk patch: http://svn.apache.org/r1656259
278 http://svn.apache.org/r1656359 (CHANGES entry)
279 2.4.x patch: trunk works (modulo CHANGES, docs/log-message-tags)
281 -0: jim: This seems to be a hit to normal performance, to handle an
282 error and/or non-normal condition. The pre-fetch is
283 expensive, and is always done, even before we know that
284 the backend is available to rec' it. I understand the
285 error described, but is the fix actually worth it (plus
286 it seems to allow for a DDoS vector).
287 ylavic: It seems to me that the problem is real since we reuse the
288 connection before prefetching 16K (either controlled by the
289 client, or by an input filter), we currently always prefetch
290 these bytes already. Regarding performance I don't see any
291 difference (more cycles) compared with the current code.
292 However I think I failed to rebuild the header_brigade when
293 the proxy loop is retried (ping), so I need to rework this.
294 Do you think we'd better remove the prefetch, or maybe just
295 make it nonblocking (by default)?
296 jim: Non-blocking seems the best way to handle...
298 * mod_dav: Allow other modules to become providers and add ACLs
299 to the DAV response. Requires a release of apr-util v1.6.
300 trunk patch: http://svn.apache.org/r1748322
301 2.4.x: trunk works modulo CHANGES/MMN
303 rpluem asks: Will this compile with apr-util < v1.6 and keep
304 mod_dav working (without the new features of the patch of course)?
305 I doubt that we will require apr-util 1.6 for the lifetime of 2.4.x
306 (see the discussion around ap_cstr_casecmp[n] an apr 1.6)
307 minfrin: Yes, as you can see in the patch everything applies only
308 if APR_XML_X2T_PARSED is defined, and the patch was tested with
309 both apr-util v1.6 and apr-util v1.5.
310 -1: jorton, breaks binary backwards compat per dev@ discuss
311 msgid <20160902120654.GA12674@redhat.com>
312 (& also, making the structure change with apr-util version
313 means it breaks binary compat across an apr-util upgrade?)
315 * Support PCRE2 (10.x) in place of PCRE (8.x).
316 Submitted by: wrowe, Petr Pisar [ppisar redhat.com]
318 http://svn.apache.org/r1773454
319 http://svn.apache.org/r1773741
320 http://svn.apache.org/r1773742
321 http://svn.apache.org/r1773839
322 http://svn.apache.org/r1773870
323 http://svn.apache.org/r1773882
324 wrowe notes that the current code is too inefficient, owing to the fact
325 that the ovector is a required allocation and is no longer allocated on
326 the stack, by design. The correct fix is an apr userdata allocation on
327 the appropriate pool, which would be thread-safe, but the actual API of
328 ap_regexec[_len]() offers us no pool. We cannot associate that pool with
329 the ap_regex_t, because a single regex may be used by many threads in
330 parallel and is not thread-safe beyond initialization.
331 So the only fix allowing us to use PCRE 10 in httpd 2.4 would be to write
332 this as a thread safe storage buffer for the majority of cases (<10 $args)
333 and we don't have a portable tls mechanism to do so.
336 PATCHES/ISSUES THAT ARE STALLED
338 * core: Add ap_errorlog_provider to make ErrorLog logging modular. This
339 backport keeps syslog logging as part of httpd core and only adds
340 API to allow other modules to be used for error logging.
341 trunk patch: http://svn.apache.org/r1525597
342 http://svn.apache.org/r1525664
343 http://svn.apache.org/r1525845
344 http://svn.apache.org/r1527003
345 http://svn.apache.org/r1527005
346 http://svn.apache.org/r1532344
347 http://svn.apache.org/r1539988
348 http://svn.apache.org/r1541029
349 http://svn.apache.org/r1543979
350 http://svn.apache.org/r1544156
351 http://svn.apache.org/r1626978
352 2.4.x patch: http://people.apache.org/~jkaluza/patches/httpd-2.4.x-errorlog_provider.patch
354 +1: covener w/ doc or code to fix syntax (providername:providerarg not supported like syslog or socacheproviders,
355 needs 2 args which is not valid in ErrorLog manual)
356 trawick: nit: fix "writing" in "/* NULL if we are writing to syslog */"
357 (sorry, haven't finished reviewing completely)
358 jim: What is the status of this??
360 * mod_proxy: Add ap_proxy_define_match_worker() and use it for ProxyPassMatch
361 and ProxyMatch section to distinguish between normal workers and workers
362 with regex substitutions in the name. Implement handling of such workers
363 in ap_proxy_get_worker(). Fixes the bug when regex workers were not
364 matched and used for request. PR 43513.
365 trunk patch: http://svn.apache.org/r1609680
366 http://svn.apache.org/r1609688
367 http://svn.apache.org/r1641381
368 ylavic: Merge patch provided (reusing new->real to avoid double de_socketfy() call).
369 Also added missing r1609688 to the patchset.
370 2.4.x patch: http://people.apache.org/~ylavic/httpd-2.4.x-ap_proxy_define_match_worker.patch
372 -0: covener tried to review this one in Austin with Jeff. Does the added match function
373 really cover a very narrow set of parameters with the way it skips over backreferences?
374 Also, why a new API vs. just setting the field inline?
376 * mod_systemd: New module, for integration with systemd on Linux.
377 trunk patch: http://svn.apache.org/r1393976
378 http://svn.apache.org/r1393997
379 http://svn.apache.org/r1484554
380 http://svn.apache.org/r1528032
381 http://svn.apache.org/r1528034
382 http://svn.apache.org/r1614821
383 http://svn.apache.org/r1618579
384 http://svn.apache.org/r1618588
385 2.4.x patch: http://people.apache.org/~jkaluza/patches/mod_systemd/httpd-2.4.x-mod_systemd.patch
387 sf comments: The IdleShutdown logic seems broken. Consider a single
388 active connection that is stalled for 10 seconds. That
389 connection will be broken after GracefulShutdownTimeout.
390 A better logic would be to check if there is any open
391 connection that is not in keep-alive state.
393 * core: Add support for systemd socket activation.
394 trunk patch: http://svn.apache.org/r1511033
395 http://svn.apache.org/r1608686
396 http://svn.apache.org/r1608694
397 http://svn.apache.org/r1608703
398 http://svn.apache.org/r1608721
399 http://svn.apache.org/r1608744
400 2.4.x patch: http://people.apache.org/~jkaluza/patches/mod_systemd/httpd-2.4.x-socket-activation.patch
403 * mod_proxy: Ensure network errors detected by the proxy are returned as
404 504 Gateway Timeout as opposed to 502 Bad Gateway
405 trunk patch: https://svn.apache.org/viewvc?view=revision&revision=1480058
406 2.4.x patch: trunk patch works modulo CHANGES
408 -1: rpluem: This change is still disputed. See
409 http://mail-archives.apache.org/mod_mbox/httpd-dev/201305.mbox/%3C1B16B9E3-87BA-4EEF-939C-7C7313B54714%40gbiv.com%3E
411 * cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will be
412 compiled by the build compiler instead of the host compiler.
413 Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected.
414 Trunk patches: http://svn.apache.org/viewvc?view=revision&revision=1327907
415 http://svn.apache.org/viewvc?view=revision&revision=1328390
416 http://svn.apache.org/viewvc?view=revision&revision=1328714
417 2.4 patch: http://people.apache.org/~fuankg/diffs/httpd-2.4.x-cross_compile.diff
418 fuankg: on hold until we agree for a better and more simple solution ...
420 * Makefile.win: Added copying of .vbs / .wsf CGIs to Windows install target.
421 Moved fixing of shebang to separate target so that it is
422 no longer executed by default and all CGIs remain inactive.
423 trunk patch: http://svn.apache.org/viewvc?view=revision&revision=1387984
424 http://svn.apache.org/viewvc?view=revision&revision=1421203
425 http://svn.apache.org/viewvc?view=revision&revision=1421591
426 2.4.x patch: http://people.apache.org/~fuankg/diffs/httpd-2.4.x-Makefile.win.diff
429 This commit is essentially deciding that an httpd install on
430 Windows now has printenv/testcgi written in 2 more languages.
431 To the extent that the usefulness is that it shows how to make scripts
432 of these types executable by httpd, I believe that the documentation
433 is the proper place to solve that. To the extent that the usefullness
434 is to show how to implement a CGI in these particular languages, I believe
435 that the httpd distribution and documentation in general is not the
436 place for that. Historically these types of scripts have caused problems
437 for downstream vendorsas well as newbies (and sometimes the intersection
438 of those two groups) who don't understand that these are information leaks
439 once they are enabled, and the subtlety of the way they are disabled ("Apache
440 messed up the first line; let me fix that") contributes to that.
441 fuankg notes: I've just added a big warning to all CGI scripts which should now
442 make absolutely clear that these CGIs are for testing purpose only - so those
443 who enable those scripts with inserting the right shebang should be 100% aware
444 of any risks (this should cover your last point).
445 jim: trawick, does the above address your concerns?
446 trawick: to some extent (somebody reading the script gets an idea)
447 Why isn't the configuration requirement documented instead
448 of described indirectly in a sample?
449 Why are these new samples added to the install without three
450 votes? (I didn't veto it; put your name next to the two
451 existing ones and I'll be satisfied that enough people
452 considered this addition as an appropriate solution for a
453 real httpd usability problem.)
454 wrowe: I'd agree with trawick, and suggest that these scripts can begin
455 their life somewhere in the manual/ tree. This really seems like
456 the place where /usr/share/httpd/examples/ would be useful, but
457 there isn't an ordinary directory for that. Since we want none
458 of the scripts to function 'out of the box', what about a new
459 cgi-examples/ dir alongside cgi-bin/? Otherwise manual/cgi/examples
462 * core: block Define and Undefine in vhost and directory context. Because
463 it is EXEC_ON_READ, it "breaks out" of these contexts anyway.
464 trunk patch: http://svn.apache.org/r1656063
465 http://svn.apache.org/r1656122
466 2.4.x patch: http://people.apache.org/~covener/patches/2.4.x-define-limits.diff
467 +1: covener (I need to review the docs manually in this area)
468 -1: wrowe (blocking will break "working" .conf files on a subversion update
469 meant to pick up security fixes. "Alerting" I would agree to.)