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 Documentation status is maintained separately and can be found at:
10 * docs/STATUS in this source tree, or
11 * http://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x/docs/STATUS
13 The current development branch of this software can be found at:
15 * http://svn.apache.org/repos/asf/httpd/httpd/trunk
17 Consult the following STATUS files for information on related projects:
19 * http://svn.apache.org/repos/asf/apr/apr/trunk/STATUS
20 * http://svn.apache.org/repos/asf/apr/apr/branches/1.4.x/STATUS
21 * http://svn.apache.org/repos/asf/apr/apr-util/branches/1.4.x/STATUS
22 * http://svn.apache.org/repos/asf/apr/apr/branches/1.5.x/STATUS
23 * http://svn.apache.org/repos/asf/apr/apr-util/branches/1.5.x/STATUS
25 Patches considered for backport are noted in their branches' STATUS:
27 * http://svn.apache.org/repos/asf/httpd/httpd/branches/2.0.x/STATUS
28 * http://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x/STATUS
29 * http://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x/STATUS
34 [NOTE that x.{odd}.z versions are strictly Alpha/Beta releases,
35 while x.{even}.z versions are Stable/GA releases.]
37 2.4.26 : In development.
38 2.4.25 : Tagged on December 16, 2016. Released on December 21, 2016.
39 2.4.24 : Tagged on December 16, 2016, not released.
40 2.4.23 : Tagged on June 30, 2016. Released on July 05, 2016.
41 2.4.22 : Tagged on June 20, 2016, not released.
42 2.4.21 : Tagged on June 16, 2016, not released.
43 2.4.20 : Tagged on April 4, 2016. Released on April 11, 2016.
44 2.4.19 : Tagged on March 21, 2016, not released.
45 2.4.18 : Tagged on December 8, 2015. Released on December 14, 2015.
46 2.4.17 : Tagged on October 9, 2015. Released October 13, 2015.
47 2.4.16 : Tagged on July 9, 2015. Released July 15, 2015
48 2.4.15 : Tagged on June 19, 2015. Not released.
49 2.4.14 : Tagged on June 11, 2015. Not released.
50 2.4.13 : Tagged on June 4, 2015. Not released.
51 2.4.12 : Tagged on January 22, 2015. Released Jan 29, 2015
52 2.4.11 : Tagged on January 15, 2015. Not released.
53 2.4.10 : Tagged on July 15, 2014. Released July 21, 2014
54 2.4.9 : Tagged on March 13, 2014. Released on March 17, 2014
55 2.4.8 : Tagged on March 11, 2014. Not released.
56 2.4.7 : Tagged on November 19, 2013. Released on Nov 25, 2013
57 2.4.6 : Tagged on July 15, 2013. Released July, 22, 2013
58 2.4.5 : Tagged on July 11, 2013, not released.
59 2.4.4 : Tagged on February 18, 2013. Released Feb 25, 2013
60 2.4.3 : Tagged on August 17, 2012. Released Aug 18, 2012
61 2.4.2 : Tagged on April 5, 2012. Released Apr 17, 2012.
62 2.4.1 : Tagged on February 13, 2012. Released Feb 21, 2012.
63 2.4.0 : Tagged on January 16, 2012, not released.
64 2.3.16 : Tagged on December 15, 2011.
65 2.3.15 : Tagged on November 8, 2011. Released Nov. 15, 2011.
66 2.3.14 : Tagged on August 1, 2011. Released Aug. 9, 2011.
67 2.3.13 : Tagged on June 28, 2011, not released.
68 2.3.12 : Tagged on May 11, 2011. Released May 23, 2011.
69 2.3.11 : Released as Beta on March 7, 2011.
70 2.3.10 : Tagged on December 13, 2010. Released Dec 21, 2010.
71 2.3.9 : Tagged on November 23, 2010, not released.
72 2.3.8 : Tagged on August 24, 2010.
73 2.3.7 : Tagged on August 19, 2010, not released.
74 2.3.6 : Released on June 21, 2010.
75 2.3.5 : Released on January 26, 2010.
76 2.3.4 : Released on December 8, 2009.
77 2.3.3 : Tagged on November 11, 2009, not released.
78 2.3.2 : Tagged on March 23, 2009, not released.
79 2.3.1 : Tagged on January 2, 2009, not released.
80 2.3.0 : Tagged on December 6, 2008, not released.
82 Contributors looking for a mission:
84 * Just do an egrep on "TODO" or "XXX" in the source.
86 * Review the bug database at: http://issues.apache.org/bugzilla/
88 * Review the "PatchAvailable" bugs in the bug database:
90 https://issues.apache.org/bugzilla/buglist.cgi?bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&product=Apache+httpd-2&keywords=PatchAvailable
92 After testing, you can append a comment saying "Reviewed and tested".
94 * Open bugs in the bug database.
96 * See also the STATUS file in the docs/ directory, which lists documentation-specific TODO items.
99 CURRENT RELEASE NOTES:
101 * Forward binary compatibility is expected of Apache 2.4.x releases, such
102 that no MMN major number changes will occur after 2.4.1. Such changes can
103 only be made in the trunk.
105 * All commits to branches/2.4.x must be reflected in SVN trunk,
106 as well, if they apply. Logical progression is commit to trunk
107 then merge into branches/2.4.x, as applicable.
109 * Current exceptions for RTC for this branch:
114 . non-Unix, single-platform code
116 RELEASE SHOWSTOPPERS:
118 *) mod_proxy_hcheck: Ensure thread-safety when concurrent healthchecks are
119 in use (ProxyHCTPsize > 0). PR 60071.
120 trunk patch: http://svn.apache.org/r1779573
121 2.4.x patch: trunk works (modulo CHANGES)
124 *) PR 60576: 2.4.21 broke PHP-FPM with the patch to strip the bogus "proxy://"
125 prefix from SCRIPT_FILENAME. We need to revert to the previous behavior
126 ASAP to avoid any further hurdles with FCGI implementations while we figure
128 trunk patch: http://svn.apache.org/r1780328
129 http://svn.apache.org/r1780329
130 http://svn.apache.org/r1781329
131 http://svn.apache.org/r1782164
132 http://svn.apache.org/r1782166
133 http://svn.apache.org/r1782193
134 http://svn.apache.org/r1778350
135 http://svn.apache.org/r1781329
136 http://svn.apache.org/r1782194
137 http://svn.apache.org/r1782323
138 http://svn.apache.org/r1782418
139 http://svn.apache.org/r1782419
140 http://svn.apache.org/r1782482
141 http://svn.apache.org/r1782532
142 2.4.x patch: http://home.apache.org/~jim/patches/mod_proxy_fcgi-v3.patch
145 PATCHES ACCEPTED TO BACKPORT FROM TRUNK:
146 [ start all new proposals below, under PATCHES PROPOSED. ]
148 *) event: close a race condition where we might re-enable listeners while they
149 are already or about to be closed.
150 trunk patch: http://svn.apache.org/r1774541
151 2.4.x patch: trunk works
152 +1: ylavic, jim, wrowe
154 *) mod_proxy_fcgi: Return HTTP 504 rather than 503 in case of proxy timeout.
155 trunk patch: http://svn.apache.org/r1775858
156 2.4 patch: trunk works (modulo CHANGES)
157 +1: elukey, jim, wrowe
160 PATCHES PROPOSED TO BACKPORT FROM TRUNK:
161 [ New proposals should be added at the end of the list ]
163 *) mod_proxy, mod_ssl: Handle SSLProxy* directives in <Proxy> sections,
164 allowing per backend TLS configuration.
165 trunk patch: http://svn.apache.org/r1740928
166 http://svn.apache.org/r1740960
167 http://svn.apache.org/r1740967
168 http://svn.apache.org/r1740987
169 http://svn.apache.org/r1740998
170 http://svn.apache.org/r1742697
171 http://svn.apache.org/r1756976
172 http://svn.apache.org/r1781313
173 2.4.x patch: http://home.apache.org/~ylavic/patches/httpd-2.4.x-r1740928_and_co-v3.patch
176 *) mod_ssl: work around leaks on (graceful) restart.
177 trunk patch: http://svn.apache.org/r1781187
178 http://svn.apache.org/r1781190
179 http://svn.apache.org/r1781312
180 2.4.x patch: http://home.apache.org/~ylavic/patches/httpd-2.4.x-mod_ssl-restart_leaks-v2.patch
183 *) mod_proxy_hcheck: Don't validate timed out responses.
184 trunk patch: http://svn.apache.org/r1779574
185 http://svn.apache.org/r1779623
186 2.4.x patch: trunk works *after r1779573 above* (modulo CHANGES)
190 PATCHES/ISSUES THAT ARE BEING WORKED
191 [ New entried should be added at the START of the list ]
193 *) mod_brotli: Backport of mod_brotli filter
194 trunk patch: http://svn.apache.org/r1761714
195 http://svn.apache.org/r1762512
196 http://svn.apache.org/r1762515
197 http://svn.apache.org/r1771791
198 http://svn.apache.org/r1779077
199 2.4.x patch: http://home.apache.org/~jim/patches/brotli-2.4.patch
201 -1: wrowe (Premature, waiting on github.com/google/brotli stable release)
202 jailletc36: doc should also be back-ported (r1779091 + r1779699)
203 NOTE: Awaiting next release post 0.5.2
205 *) mod_remoteip: Add PROXY protocol support
206 trunk patch: http://svn.apache.org/r1776575
207 http://svn.apache.org/r1776578 (doc fix)
208 http://svn.apache.org/r1776627 (shortened name + doc fix)
209 http://svn.apache.org/r1776674 (attribution moved to CHANGES)
210 http://svn.apache.org/r1776740 (attribution updated in mod_remotip.c)
211 http://svn.apache.org/r1778268 (fix compiler warning)
212 http://svn.apache.org/r1780725 (set buckets aside)
213 http://svn.apache.org/r1781030 (fix strict GCC warning)
214 http://svn.apache.org/r1781031 (reference the filter by handle)
215 http://svn.apache.org/r1781701 (rework optional processing case)
216 2.4 convenience patch (includes CHANGES):
217 http://people.apache.org/~druggeri/patches/RemoteIPProxyProtocol.2.4.x.patch
219 -1: wrowe (as noted on list, not limiting to inbound primary pre_conn
220 scope correctly; lots of redundant code happpening per-request
221 for a per-connection behavior. Investigating further.)
223 *) mod_ssl: Return 502 instead of 500 when SSL peer check or
224 proxy_post_handshake hook fails.
225 Trunk patch: r1645529 (works)
226 2.4.x patch which adds CHANGES: https://emptyhammock.com/media/downloads/r1645529-to-2.4.x.txt
228 ylavic: there may be missing bits, see thread for commit r1736510.
230 *) core: Drop an invalid Last-Modified header value coming
231 from a (F)CGI script instead of replacing it with Unix epoch.
232 Warn the users about Last-Modified header value replacements
233 and violations of the RFC.
234 trunk patch: http://svn.apache.org/r1748379
235 http://svn.apache.org/r1750747
236 http://svn.apache.org/r1750749
237 http://svn.apache.org/r1750953
238 http://svn.apache.org/r1751138
239 http://svn.apache.org/r1751139
240 http://svn.apache.org/r1751147
241 http://svn.apache.org/r1757818
242 2.4.x: trunk patches work, final view:
243 http://home.apache.org/~elukey/httpd-2.4.x-core-last_modified_tz_logging.patch
244 The problem has been discussed in dev@ extensively but we did not reach a common
245 agreement about how to proceed in the long term. While we wait, I would really like
246 to introduce useful logs for the users (the starting point of this change was a users@
247 email thread). If this is not the right way to go I will move the patch to other
248 sections of STATUS (stalled or being worked).
249 The code has been tested with a simple PHP script returning different Last-Modified
250 headers (GMT now, GMT now Europe/Paris, GMT tomorrow, GMT yesterday, PST now).
253 *) http: Don't remove the Content-Length of zero from a HEAD response if
254 it comes from an origin server, module or script. Allow the previous
255 behaviour (for legacy/buggy modules only, not origin) by also backporting
256 the HttpContentLengthHeadZero directive (and also HttpExpectStrict which
257 comes for free with the same commit).
258 trunk patch: http://svn.apache.org/r1554303
259 http://svn.apache.org/r1678215
260 2.4.x patch: http://people.apache.org/~ylavic/httpd-2.4.x-preserve_head_cl_zero.patch
262 ylavic: r1554303 issued a major MMN bump, but since the ABI change is two
263 ints added at the end of core_server_config, the proposed merge
264 does a minor bump only.
265 minfrin: Two new directives need to be documented.
267 * mod_proxy_http: Don't establish or reuse a backend connection before pre-
268 fetching the request body, so to minimize the delay between it is supposed
269 to be alive and the first bytes sent: this is a best effort to prevent the
270 backend from closing because of idle or keepalive timeout in the meantime.
271 Also, handle a new "proxy-flushall" environment variable which allows to
272 flush any forwarded body data immediately. PR 56541+37920.
273 trunk patch: http://svn.apache.org/r1656259
274 http://svn.apache.org/r1656359 (CHANGES entry)
275 2.4.x patch: trunk works (modulo CHANGES, docs/log-message-tags)
277 -0: jim: This seems to be a hit to normal performance, to handle an
278 error and/or non-normal condition. The pre-fetch is
279 expensive, and is always done, even before we know that
280 the backend is available to rec' it. I understand the
281 error described, but is the fix actually worth it (plus
282 it seems to allow for a DDoS vector).
283 ylavic: It seems to me that the problem is real since we reuse the
284 connection before prefetching 16K (either controlled by the
285 client, or by an input filter), we currently always prefetch
286 these bytes already. Regarding performance I don't see any
287 difference (more cycles) compared with the current code.
288 However I think I failed to rebuild the header_brigade when
289 the proxy loop is retried (ping), so I need to rework this.
290 Do you think we'd better remove the prefetch, or maybe just
291 make it nonblocking (by default)?
292 jim: Non-blocking seems the best way to handle...
294 * mod_dav: Allow other modules to become providers and add ACLs
295 to the DAV response. Requires a release of apr-util v1.6.
296 trunk patch: http://svn.apache.org/r1748322
297 2.4.x: trunk works modulo CHANGES/MMN
299 rpluem asks: Will this compile with apr-util < v1.6 and keep
300 mod_dav working (without the new features of the patch of course)?
301 I doubt that we will require apr-util 1.6 for the lifetime of 2.4.x
302 (see the discussion around ap_cstr_casecmp[n] an apr 1.6)
303 minfrin: Yes, as you can see in the patch everything applies only
304 if APR_XML_X2T_PARSED is defined, and the patch was tested with
305 both apr-util v1.6 and apr-util v1.5.
306 -1: jorton, breaks binary backwards compat per dev@ discuss
307 msgid <20160902120654.GA12674@redhat.com>
308 (& also, making the structure change with apr-util version
309 means it breaks binary compat across an apr-util upgrade?)
311 * Support PCRE2 (10.x) in place of PCRE (8.x).
312 Submitted by: wrowe, Petr Pisar [ppisar redhat.com]
314 http://svn.apache.org/r1773454
315 http://svn.apache.org/r1773741
316 http://svn.apache.org/r1773742
317 http://svn.apache.org/r1773839
318 http://svn.apache.org/r1773870
319 http://svn.apache.org/r1773882
320 wrowe notes that the current code is too inefficient, owing to the fact
321 that the ovector is a required allocation and is no longer allocated on
322 the stack, by design. The correct fix is an apr userdata allocation on
323 the appropriate pool, which would be thread-safe, but the actual API of
324 ap_regexec[_len]() offers us no pool. We cannot associate that pool with
325 the ap_regex_t, because a single regex may be used by many threads in
326 parallel and is not thread-safe beyond initialization.
327 So the only fix allowing us to use PCRE 10 in httpd 2.4 would be to write
328 this as a thread safe storage buffer for the majority of cases (<10 $args)
329 and we don't have a portable tls mechanism to do so.
332 PATCHES/ISSUES THAT ARE STALLED
334 * core: Add ap_errorlog_provider to make ErrorLog logging modular. This
335 backport keeps syslog logging as part of httpd core and only adds
336 API to allow other modules to be used for error logging.
337 trunk patch: http://svn.apache.org/r1525597
338 http://svn.apache.org/r1525664
339 http://svn.apache.org/r1525845
340 http://svn.apache.org/r1527003
341 http://svn.apache.org/r1527005
342 http://svn.apache.org/r1532344
343 http://svn.apache.org/r1539988
344 http://svn.apache.org/r1541029
345 http://svn.apache.org/r1543979
346 http://svn.apache.org/r1544156
347 http://svn.apache.org/r1626978
348 2.4.x patch: http://people.apache.org/~jkaluza/patches/httpd-2.4.x-errorlog_provider.patch
350 +1: covener w/ doc or code to fix syntax (providername:providerarg not supported like syslog or socacheproviders,
351 needs 2 args which is not valid in ErrorLog manual)
352 trawick: nit: fix "writing" in "/* NULL if we are writing to syslog */"
353 (sorry, haven't finished reviewing completely)
354 jim: What is the status of this??
356 * mod_proxy: Add ap_proxy_define_match_worker() and use it for ProxyPassMatch
357 and ProxyMatch section to distinguish between normal workers and workers
358 with regex substitutions in the name. Implement handling of such workers
359 in ap_proxy_get_worker(). Fixes the bug when regex workers were not
360 matched and used for request. PR 43513.
361 trunk patch: http://svn.apache.org/r1609680
362 http://svn.apache.org/r1609688
363 http://svn.apache.org/r1641381
364 ylavic: Merge patch provided (reusing new->real to avoid double de_socketfy() call).
365 Also added missing r1609688 to the patchset.
366 2.4.x patch: http://people.apache.org/~ylavic/httpd-2.4.x-ap_proxy_define_match_worker.patch
368 -0: covener tried to review this one in Austin with Jeff. Does the added match function
369 really cover a very narrow set of parameters with the way it skips over backreferences?
370 Also, why a new API vs. just setting the field inline?
372 * mod_systemd: New module, for integration with systemd on Linux.
373 trunk patch: http://svn.apache.org/r1393976
374 http://svn.apache.org/r1393997
375 http://svn.apache.org/r1484554
376 http://svn.apache.org/r1528032
377 http://svn.apache.org/r1528034
378 http://svn.apache.org/r1614821
379 http://svn.apache.org/r1618579
380 http://svn.apache.org/r1618588
381 2.4.x patch: http://people.apache.org/~jkaluza/patches/mod_systemd/httpd-2.4.x-mod_systemd.patch
383 sf comments: The IdleShutdown logic seems broken. Consider a single
384 active connection that is stalled for 10 seconds. That
385 connection will be broken after GracefulShutdownTimeout.
386 A better logic would be to check if there is any open
387 connection that is not in keep-alive state.
389 * mod_journald: Add new module mod_journald to log error logs into journald.
390 This patch needs changes done in mod_systemd patch (already
392 trunk patch: http://svn.apache.org/r1610339
393 http://svn.apache.org/r1621806
394 2.4.x patch: http://people.apache.org/~jkaluza/patches/httpd-2.4.x-mod_journald.patch
396 rjung, minfrin: Not understanding "This patch needs changes done in
397 mod_systemd patch", am I right in understanding this patch is
399 jkaluza: No, that patch is not committed yet. It is in STALLED section.
400 The link for that patch is: http://people.apache.org/~jkaluza/patches/mod_systemd/httpd-2.4.x-mod_systemd.patch
402 * core: Add support for systemd socket activation.
403 trunk patch: http://svn.apache.org/r1511033
404 http://svn.apache.org/r1608686
405 http://svn.apache.org/r1608694
406 http://svn.apache.org/r1608703
407 http://svn.apache.org/r1608721
408 http://svn.apache.org/r1608744
409 2.4.x patch: http://people.apache.org/~jkaluza/patches/mod_systemd/httpd-2.4.x-socket-activation.patch
412 * mod_proxy: Ensure network errors detected by the proxy are returned as
413 504 Gateway Timeout as opposed to 502 Bad Gateway
414 trunk patch: https://svn.apache.org/viewvc?view=revision&revision=1480058
415 2.4.x patch: trunk patch works modulo CHANGES
417 -1: rpluem: This change is still disputed. See
418 http://mail-archives.apache.org/mod_mbox/httpd-dev/201305.mbox/%3C1B16B9E3-87BA-4EEF-939C-7C7313B54714%40gbiv.com%3E
420 * cross-compile: allow to provide CC_FOR_BUILD so that gen_test_char will be
421 compiled by the build compiler instead of the host compiler.
422 Also set CC_FOR_BUILD to 'cc' when cross-compilation is detected.
423 Trunk patches: http://svn.apache.org/viewvc?view=revision&revision=1327907
424 http://svn.apache.org/viewvc?view=revision&revision=1328390
425 http://svn.apache.org/viewvc?view=revision&revision=1328714
426 2.4 patch: http://people.apache.org/~fuankg/diffs/httpd-2.4.x-cross_compile.diff
427 fuankg: on hold until we agree for a better and more simple solution ...
429 * Makefile.win: Added copying of .vbs / .wsf CGIs to Windows install target.
430 Moved fixing of shebang to separate target so that it is
431 no longer executed by default and all CGIs remain inactive.
432 trunk patch: http://svn.apache.org/viewvc?view=revision&revision=1387984
433 http://svn.apache.org/viewvc?view=revision&revision=1421203
434 http://svn.apache.org/viewvc?view=revision&revision=1421591
435 2.4.x patch: http://people.apache.org/~fuankg/diffs/httpd-2.4.x-Makefile.win.diff
438 This commit is essentially deciding that an httpd install on
439 Windows now has printenv/testcgi written in 2 more languages.
440 To the extent that the usefulness is that it shows how to make scripts
441 of these types executable by httpd, I believe that the documentation
442 is the proper place to solve that. To the extent that the usefullness
443 is to show how to implement a CGI in these particular languages, I believe
444 that the httpd distribution and documentation in general is not the
445 place for that. Historically these types of scripts have caused problems
446 for downstream vendorsas well as newbies (and sometimes the intersection
447 of those two groups) who don't understand that these are information leaks
448 once they are enabled, and the subtlety of the way they are disabled ("Apache
449 messed up the first line; let me fix that") contributes to that.
450 fuankg notes: I've just added a big warning to all CGI scripts which should now
451 make absolutely clear that these CGIs are for testing purpose only - so those
452 who enable those scripts with inserting the right shebang should be 100% aware
453 of any risks (this should cover your last point).
454 jim: trawick, does the above address your concerns?
455 trawick: to some extent (somebody reading the script gets an idea)
456 Why isn't the configuration requirement documented instead
457 of described indirectly in a sample?
458 Why are these new samples added to the install without three
459 votes? (I didn't veto it; put your name next to the two
460 existing ones and I'll be satisfied that enough people
461 considered this addition as an appropriate solution for a
462 real httpd usability problem.)
463 wrowe: I'd agree with trawick, and suggest that these scripts can begin
464 their life somewhere in the manual/ tree. This really seems like
465 the place where /usr/share/httpd/examples/ would be useful, but
466 there isn't an ordinary directory for that. Since we want none
467 of the scripts to function 'out of the box', what about a new
468 cgi-examples/ dir alongside cgi-bin/? Otherwise manual/cgi/examples
471 * core: block Define and Undefine in vhost and directory context. Because
472 it is EXEC_ON_READ, it "breaks out" of these contexts anyway.
473 trunk patch: http://svn.apache.org/r1656063
474 http://svn.apache.org/r1656122
475 2.4.x patch: http://people.apache.org/~covener/patches/2.4.x-define-limits.diff
476 +1: covener (I need to review the docs manually in this area)
477 -1: wrowe (blocking will break "working" .conf files on a subversion update
478 meant to pick up security fixes. "Alerting" I would agree to.)