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 handlign.
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?
164 *) mod_remoteip: Add PROXY protocol support
165 trunk patch: http://svn.apache.org/r1776575
166 http://svn.apache.org/r1776578 (doc fix)
167 http://svn.apache.org/r1776627 (shortened name + doc fix)
168 http://svn.apache.org/r1776674 (attribution moved to CHANGES)
169 http://svn.apache.org/r1776740 (attribution updated in mod_remotip.c)
170 http://svn.apache.org/r1778268 (fix compiler warning)
171 http://svn.apache.org/r1780725 (set buckets aside)
172 http://svn.apache.org/r1781030 (fix strict GCC warning)
173 http://svn.apache.org/r1781031 (reference the filter by handle)
174 http://svn.apache.org/r1781701 (rework optional processing case)
175 http://svn.apache.org/r1788674 (final edge cases/ignore slave conns)
176 http://svn.apache.org/r1789800 (remove optional processing)
177 http://svn.apache.org/r1790169 (rename "exception" directive)
178 http://svn.apache.org/r1790457 (Update directive name in err message)
179 http://svn.apache.org/r1806985
180 2.4 convenience patch (includes CHANGES):
181 http://home.apache.org/~jim/patches/RemoteIPProxyProtocol.2.4.x.patch
182 http://svn.apache.org/r1806985
184 mrumph: I had a chance to review this proposal.
185 I committed some suggested changes to trunk in r1806985.
186 Also, the copyright in mod_remoteip.c is of some concern.
187 Perhaps the terms of the copyright should be included in that note.
188 And on a personal note, today is my last day with Oracle.
189 So it may well be my last day with Apache as well.
190 It has been great working with all of you.
191 jim: Not sure what the copyright concern is, but added r1806985
193 ylavic: RemoteIPProxyProtocol* are documented as scoped to server config
194 and virtual host, though using ap_server_conf makes them global
195 only (thus less useful too...).
197 *) mod_journald: Add new module mod_journald to log error logs into journald.
198 trunk patch: http://svn.apache.org/r1610339
199 http://svn.apache.org/r1621806
200 2.4.x patch: http://people.apache.org/~jkaluza/patches/httpd-2.4.x-mod_journald.patch
202 jchampion: Looks like the headers require GCC extensions to compile, so
203 mod_journald can't be configured in maintainer mode (-std=c89).
204 Can anyone else reproduce, or is it just my distro?
206 *) mod_unique_id: Use PRNG output rather than needing to use DNS,
207 an IPv4 address (or failing) and PID, and slowing down startup
209 trunk patch: http://svn.apache.org/r1501827
210 2.4.x patch: trunk works
213 PATCHES/ISSUES THAT ARE BEING WORKED
214 [ New entries should be added at the START of the list ]
216 *) mod_ssl: Return 502 instead of 500 when SSL peer check or
217 proxy_post_handshake hook fails.
218 Trunk patch: r1645529 (works)
219 2.4.x patch which adds CHANGES: https://emptyhammock.com/media/downloads/r1645529-to-2.4.x.txt
221 ylavic: there may be missing bits, see thread for commit r1736510.
223 *) core: Drop an invalid Last-Modified header value coming
224 from a (F)CGI script instead of replacing it with Unix epoch.
225 Warn the users about Last-Modified header value replacements
226 and violations of the RFC.
227 trunk patch: http://svn.apache.org/r1748379
228 http://svn.apache.org/r1750747
229 http://svn.apache.org/r1750749
230 http://svn.apache.org/r1750953
231 http://svn.apache.org/r1751138
232 http://svn.apache.org/r1751139
233 http://svn.apache.org/r1751147
234 http://svn.apache.org/r1757818
235 2.4.x: trunk patches work, final view:
236 http://home.apache.org/~elukey/httpd-2.4.x-core-last_modified_tz_logging.patch
237 The problem has been discussed in dev@ extensively but we did not reach a common
238 agreement about how to proceed in the long term. While we wait, I would really like
239 to introduce useful logs for the users (the starting point of this change was a users@
240 email thread). If this is not the right way to go I will move the patch to other
241 sections of STATUS (stalled or being worked).
242 The code has been tested with a simple PHP script returning different Last-Modified
243 headers (GMT now, GMT now Europe/Paris, GMT tomorrow, GMT yesterday, PST now).
246 *) http: Don't remove the Content-Length of zero from a HEAD response if
247 it comes from an origin server, module or script. Allow the previous
248 behaviour (for legacy/buggy modules only, not origin) by also backporting
249 the HttpContentLengthHeadZero directive (and also HttpExpectStrict which
250 comes for free with the same commit).
251 trunk patch: http://svn.apache.org/r1554303
252 http://svn.apache.org/r1678215
253 2.4.x patch: http://people.apache.org/~ylavic/httpd-2.4.x-preserve_head_cl_zero.patch
255 ylavic: r1554303 issued a major MMN bump, but since the ABI change is two
256 ints added at the end of core_server_config, the proposed merge
257 does a minor bump only.
258 minfrin: Two new directives need to be documented.
260 * mod_proxy_http: Don't establish or reuse a backend connection before pre-
261 fetching the request body, so to minimize the delay between it is supposed
262 to be alive and the first bytes sent: this is a best effort to prevent the
263 backend from closing because of idle or keepalive timeout in the meantime.
264 Also, handle a new "proxy-flushall" environment variable which allows to
265 flush any forwarded body data immediately. PR 56541+37920.
266 trunk patch: http://svn.apache.org/r1656259
267 http://svn.apache.org/r1656359 (CHANGES entry)
268 2.4.x patch: trunk works (modulo CHANGES, docs/log-message-tags)
270 -0: jim: This seems to be a hit to normal performance, to handle an
271 error and/or non-normal condition. The pre-fetch is
272 expensive, and is always done, even before we know that
273 the backend is available to rec' it. I understand the
274 error described, but is the fix actually worth it (plus
275 it seems to allow for a DDoS vector).
276 ylavic: It seems to me that the problem is real since we reuse the
277 connection before prefetching 16K (either controlled by the
278 client, or by an input filter), we currently always prefetch
279 these bytes already. Regarding performance I don't see any
280 difference (more cycles) compared with the current code.
281 However I think I failed to rebuild the header_brigade when
282 the proxy loop is retried (ping), so I need to rework this.
283 Do you think we'd better remove the prefetch, or maybe just
284 make it nonblocking (by default)?
285 jim: Non-blocking seems the best way to handle...
287 * mod_dav: Allow other modules to become providers and add ACLs
288 to the DAV response. Requires a release of apr-util v1.6.
289 trunk patch: http://svn.apache.org/r1748322
290 2.4.x: trunk works modulo CHANGES/MMN
292 rpluem asks: Will this compile with apr-util < v1.6 and keep
293 mod_dav working (without the new features of the patch of course)?
294 I doubt that we will require apr-util 1.6 for the lifetime of 2.4.x
295 (see the discussion around ap_cstr_casecmp[n] an apr 1.6)
296 minfrin: Yes, as you can see in the patch everything applies only
297 if APR_XML_X2T_PARSED is defined, and the patch was tested with
298 both apr-util v1.6 and apr-util v1.5.
299 -1: jorton, breaks binary backwards compat per dev@ discuss
300 msgid <20160902120654.GA12674@redhat.com>
301 (& also, making the structure change with apr-util version
302 means it breaks binary compat across an apr-util upgrade?)
304 * Support PCRE2 (10.x) in place of PCRE (8.x).
305 Submitted by: wrowe, Petr Pisar [ppisar redhat.com]
307 http://svn.apache.org/r1773454
308 http://svn.apache.org/r1773741
309 http://svn.apache.org/r1773742
310 http://svn.apache.org/r1773839
311 http://svn.apache.org/r1773870
312 http://svn.apache.org/r1773882
313 wrowe notes that the current code is too inefficient, owing to the fact
314 that the ovector is a required allocation and is no longer allocated on
315 the stack, by design. The correct fix is an apr userdata allocation on
316 the appropriate pool, which would be thread-safe, but the actual API of
317 ap_regexec[_len]() offers us no pool. We cannot associate that pool with
318 the ap_regex_t, because a single regex may be used by many threads in
319 parallel and is not thread-safe beyond initialization.
320 So the only fix allowing us to use PCRE 10 in httpd 2.4 would be to write
321 this as a thread safe storage buffer for the majority of cases (<10 $args)
322 and we don't have a portable tls mechanism to do so.
325 PATCHES/ISSUES THAT ARE STALLED
327 * core: Add ap_errorlog_provider to make ErrorLog logging modular. This
328 backport keeps syslog logging as part of httpd core and only adds
329 API to allow other modules to be used for error logging.
330 trunk patch: http://svn.apache.org/r1525597
331 http://svn.apache.org/r1525664
332 http://svn.apache.org/r1525845
333 http://svn.apache.org/r1527003
334 http://svn.apache.org/r1527005
335 http://svn.apache.org/r1532344
336 http://svn.apache.org/r1539988
337 http://svn.apache.org/r1541029
338 http://svn.apache.org/r1543979
339 http://svn.apache.org/r1544156
340 http://svn.apache.org/r1626978
341 2.4.x patch: http://people.apache.org/~jkaluza/patches/httpd-2.4.x-errorlog_provider.patch
343 +1: covener w/ doc or code to fix syntax (providername:providerarg not supported like syslog or socacheproviders,
344 needs 2 args which is not valid in ErrorLog manual)
345 trawick: nit: fix "writing" in "/* NULL if we are writing to syslog */"
346 (sorry, haven't finished reviewing completely)
347 jim: What is the status of this??
349 * mod_proxy: Add ap_proxy_define_match_worker() and use it for ProxyPassMatch
350 and ProxyMatch section to distinguish between normal workers and workers
351 with regex substitutions in the name. Implement handling of such workers
352 in ap_proxy_get_worker(). Fixes the bug when regex workers were not
353 matched and used for request. PR 43513.
354 trunk patch: http://svn.apache.org/r1609680
355 http://svn.apache.org/r1609688
356 http://svn.apache.org/r1641381
357 ylavic: Merge patch provided (reusing new->real to avoid double de_socketfy() call).
358 Also added missing r1609688 to the patchset.
359 2.4.x patch: http://people.apache.org/~ylavic/httpd-2.4.x-ap_proxy_define_match_worker.patch
361 -0: covener tried to review this one in Austin with Jeff. Does the added match function
362 really cover a very narrow set of parameters with the way it skips over backreferences?
363 Also, why a new API vs. just setting the field inline?
365 * mod_systemd: New module, for integration with systemd on Linux.
366 trunk patch: http://svn.apache.org/r1393976
367 http://svn.apache.org/r1393997
368 http://svn.apache.org/r1484554
369 http://svn.apache.org/r1528032
370 http://svn.apache.org/r1528034
371 http://svn.apache.org/r1614821
372 http://svn.apache.org/r1618579
373 http://svn.apache.org/r1618588
374 2.4.x patch: http://people.apache.org/~jkaluza/patches/mod_systemd/httpd-2.4.x-mod_systemd.patch
376 sf comments: The IdleShutdown logic seems broken. Consider a single
377 active connection that is stalled for 10 seconds. That
378 connection will be broken after GracefulShutdownTimeout.
379 A better logic would be to check if there is any open
380 connection that is not in keep-alive state.
382 * core: Add support for systemd socket activation.
383 trunk patch: http://svn.apache.org/r1511033
384 http://svn.apache.org/r1608686
385 http://svn.apache.org/r1608694
386 http://svn.apache.org/r1608703
387 http://svn.apache.org/r1608721
388 http://svn.apache.org/r1608744
389 2.4.x patch: http://people.apache.org/~jkaluza/patches/mod_systemd/httpd-2.4.x-socket-activation.patch
392 * mod_proxy: Ensure network errors detected by the proxy are returned as
393 504 Gateway Timeout as opposed to 502 Bad Gateway
394 trunk patch: https://svn.apache.org/viewvc?view=revision&revision=1480058
395 2.4.x patch: trunk patch works modulo CHANGES
397 -1: rpluem: This change is still disputed. See
398 http://mail-archives.apache.org/mod_mbox/httpd-dev/201305.mbox/%3C1B16B9E3-87BA-4EEF-939C-7C7313B54714%40gbiv.com%3E
400 * cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will be
401 compiled by the build compiler instead of the host compiler.
402 Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected.
403 Trunk patches: http://svn.apache.org/viewvc?view=revision&revision=1327907
404 http://svn.apache.org/viewvc?view=revision&revision=1328390
405 http://svn.apache.org/viewvc?view=revision&revision=1328714
406 2.4 patch: http://people.apache.org/~fuankg/diffs/httpd-2.4.x-cross_compile.diff
407 fuankg: on hold until we agree for a better and more simple solution ...
409 * Makefile.win: Added copying of .vbs / .wsf CGIs to Windows install target.
410 Moved fixing of shebang to separate target so that it is
411 no longer executed by default and all CGIs remain inactive.
412 trunk patch: http://svn.apache.org/viewvc?view=revision&revision=1387984
413 http://svn.apache.org/viewvc?view=revision&revision=1421203
414 http://svn.apache.org/viewvc?view=revision&revision=1421591
415 2.4.x patch: http://people.apache.org/~fuankg/diffs/httpd-2.4.x-Makefile.win.diff
418 This commit is essentially deciding that an httpd install on
419 Windows now has printenv/testcgi written in 2 more languages.
420 To the extent that the usefulness is that it shows how to make scripts
421 of these types executable by httpd, I believe that the documentation
422 is the proper place to solve that. To the extent that the usefullness
423 is to show how to implement a CGI in these particular languages, I believe
424 that the httpd distribution and documentation in general is not the
425 place for that. Historically these types of scripts have caused problems
426 for downstream vendorsas well as newbies (and sometimes the intersection
427 of those two groups) who don't understand that these are information leaks
428 once they are enabled, and the subtlety of the way they are disabled ("Apache
429 messed up the first line; let me fix that") contributes to that.
430 fuankg notes: I've just added a big warning to all CGI scripts which should now
431 make absolutely clear that these CGIs are for testing purpose only - so those
432 who enable those scripts with inserting the right shebang should be 100% aware
433 of any risks (this should cover your last point).
434 jim: trawick, does the above address your concerns?
435 trawick: to some extent (somebody reading the script gets an idea)
436 Why isn't the configuration requirement documented instead
437 of described indirectly in a sample?
438 Why are these new samples added to the install without three
439 votes? (I didn't veto it; put your name next to the two
440 existing ones and I'll be satisfied that enough people
441 considered this addition as an appropriate solution for a
442 real httpd usability problem.)
443 wrowe: I'd agree with trawick, and suggest that these scripts can begin
444 their life somewhere in the manual/ tree. This really seems like
445 the place where /usr/share/httpd/examples/ would be useful, but
446 there isn't an ordinary directory for that. Since we want none
447 of the scripts to function 'out of the box', what about a new
448 cgi-examples/ dir alongside cgi-bin/? Otherwise manual/cgi/examples
451 * core: block Define and Undefine in vhost and directory context. Because
452 it is EXEC_ON_READ, it "breaks out" of these contexts anyway.
453 trunk patch: http://svn.apache.org/r1656063
454 http://svn.apache.org/r1656122
455 2.4.x patch: http://people.apache.org/~covener/patches/2.4.x-define-limits.diff
456 +1: covener (I need to review the docs manually in this area)
457 -1: wrowe (blocking will break "working" .conf files on a subversion update
458 meant to pick up security fixes. "Alerting" I would agree to.)