Merge of r1897753 from trunk:

  *) mod_http2: remove mention of Cache Digest functionality
     since the draft has been redacted for some time.

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* Vote, comment [skip ci]

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Vote, promote [skip ci]

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Vote, [skip ci]

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* Another fix to the changes entry [skip ci]

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* Add proposal [skip ci]

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fr doc rebuid.

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fr doc XML file update.

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Fixes ambiguous example, as per https://bz.apache.org/bugzilla/show_bug.cgi?id=63714

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fr doc rebuild.

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fr doc XML files updates.

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Add some small comments

[skip ci]

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Adds link to bugzilla as requested in  https://bz.apache.org/bugzilla/show_bug.cgi?id=61218

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Removes link to long-gone website.
Fixes https://bz.apache.org/bugzilla/show_bug.cgi?id=65651

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Patch from Vedran Miletić in
https://bz.apache.org/bugzilla/show_bug.cgi?id=65821  Notes the version
in which MDContactEmail was added.

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* Backported [skip ci]

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Merge r1896505 from trunk:

mpm_event: Fix a possible listener deadlock.  PR 65769.

When the listener starts accepting more connections than the number of workers
already started (due to scheduling), the listening sockets gets disabled (per
AH03269) but nothing was re-enabling them before the end of the connections,
despite the creation of more idle/available workers in the meantime.
In the wost case there is no idle worker when the listener accepts the first
connection thus nothing to wake up the listener blocked in poll() with no
socket, hence a deadlock.

Fix this by waking up the listener when a worker becomes idle and this unblocks
connections_above_limit(). This is also worthwhile when all the workers are
started (fully initialized runtime) since the number of idle workers is a
condition for connections_above_limit() anyway so the sooner the listeners are
re-enabled the better (the other condition is the number of connections which
is unblocked appropriately by decrement_connection_count() already).

Also when a child exists with ps->quiescing == 1 and it's caught by
server_main_loop() before perform_idle_server_maintenance(), active_daemons was
not decrement as needed (including accross restarts), leading to an invalid
active_daemons accounting.

* server/mpm/event/event.c(should_enable_listensocks):
  New helper that returns whether listenning sockets can be poll()ed again.

* server/mpm/event/event.c(decrement_connection_count, listener_thread):
  Use should_enable_listensocks() where previously open-coded.

* server/mpm/event/event.c(worker_thread):
  Wake up the listener when is_idle => 1 and should_enable_listensocks().
  Have a single point of exit when workers_may_exit to make sure that the
  wake always occurs (even when exiting).

* server/mpm/event/event.c(server_main_loop):
  Decrement active_daemons not only when !ps->quiescing but also when
  ps->quiescing == 1, i.e. all the cases not handled by
  perform_idle_server_maintenance() already.

Submitted by: ylavic
Reviewed by: rpluem, ylavic, gbechis

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* Promote [skip ci]

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Propose.

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Propose.

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Propose.

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Propose.

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fr doc rebuild.

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fr doc XML files updates.

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vote [skip ci]

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+1

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Merge r1893410, r1893411, r1893414, r1893473, r1893476, r1893478, r1896746, r1896758, r1896759, r1896784, r1896785, r1896890, r1896891 from trunk:

ci: print error_log on perl-framework failure.

ci: show non-traceX logs only.

ci: show >debug logs only.

test -n wants a single argument.

More of test -n wants a single argument.

No nullglob with ls..

Try to get more perl-framework traces for the ocsp failure on travis.

Let's see if mod_dumpio gives more ocsp hints..

Revert r1896758 and r1896746 (travis debug temporaries). [skip ci]

Ignore debug logs when checking segfaults. [skip ci]

ocsp failure debugging, still.

OCSP test should pass now, revert r1896785.

Revert r1896715 and r1896740 to restore OCPS test.

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* Add proposal [skip ci]

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Propose pcre2 support for backport

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Merge r1896715, r1896740 from trunk:

Temporarily disable the OCSP test.

Try disabling OCSP test before running it (duh).

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Fix a typo.
Prefer <code> to <var> when giving the value of a parameter
Add a missing space
Add a missing link

r1896413 in trunk

+ synch with trunk

[skip ci]

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Fix a typo and add a missing link to a directive

r1896411 on trunk

[skip ci]

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Fix some typo.

Add some missing spaces spotted here and there to better comply with coding style.

mod_md is CTR.
r1896409 on trunk

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Backport CTR changes for mod_tls and /test/*

This is only typo fixes.

r1896386 + r1896393 in trunk

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Fix typos in CHANGES

[skip ci]

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Rebuild doc

[skip ci]

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Improve mod_tls documentation layout

Merge 1896372, 1896373, 1896374, 1896377, 1896378 from trunk

[skip ci]

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Add a few missing hyper links and use <em> for parameters that need to be replaced with actual values

r1896363 in trunk

[skip ci]

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Credits [skip ci]

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Restore a 2.4.30 CHANGES entry unintentionally axed by r1824866 [skip ci].

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publishing release httpd-2.4.52

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fr doc rebuild.

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fr doc XML file update.

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fr doc rebuild.

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fr doc XML file update.

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Add some installation information, if it can help s.o.

[skip ci]

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Add a compatibility note for MDExternalAccountBinding
(r1896105 in trunk)

+ backport part of r1890574 to fix some typo
+ backport r1874331 to s/https:/TLS/

[skip ci]

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Tweak CHANGES wording on autoconf fix and credit jfclere. [skip ci]

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Sync docs [skip ci].

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Merge r1896062 from trunk: [skip ci]

Improve ProxyPass mapping= docs.

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docs update. convenience.map now generated in utf-8.

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Merge r1896048 from trunk: [skip ci]

docs/mod_proxy.xml: syntax.

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cleanup after backport. [skip ci]

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Merge of r1895981,r1895986 from trunk:

  *) mod_proxy: Don't prevent forwarding URIs w/ no hostname.
                (fix for r1895955 already in 2.4.x)

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vote and promote. [skip ci]

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cleanup after backport. [skip ci]

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Merge r1895970 from trunk:

  *) mod_lua: Improve error handling

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vote and promote. [skip ci]

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Merge r1895973 from trunk: (CTR for Travis changes)

Test against OpenSSL 3.0.1.

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* Propose. Yann let me know to add him to +1 [skip ci]

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Move to SHOWSTOPPERS (-1 ongoing in current 2.4.x code) [skip ci]

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Propose [skip ci]

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 *) test: adding building of librustls in case TEST_MOD_TLS is set.

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  *) test: adding and enabling travis tests for modules core, http2, md and tls.

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Backported [skip ci]

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Merge r1895914, r1895921 from trunk:

  *) http: Enforce that fully qualified uri-paths not to be forward-proxied
     have an http(s) scheme, and that the ones to be forward proxied have a
     hostname, per HTTP specifications.
     trunk patch: http://svn.apache.org/r1895914
                  http://svn.apache.org/r1895921
     2.4.x patch: https://patch-diff.githubusercontent.com/raw/apache/httpd/pull/286.patch
     backport PR: https://github.com/apache/httpd/pull/286
     +1: ylavic, minfrin, gbechis

mod_proxy: Detect unix: scheme syntax errors at load time.

* modules/proxy/mod_proxy.c(add_pass, add_member, set_proxy_param,
                            proxysection):
  Check return value of ap_proxy_de_socketfy().

* modules/proxy/proxy_util.c(ap_proxy_get_worker_ex):
  Check return value of ap_proxy_de_socketfy().

http: Enforce that fully qualified uri-paths not to be forward-proxied
      have an http(s) scheme, and that the ones to be forward proxied have a
      hostname, per HTTP specifications.

The early checks avoid failing the request later on and thus save cycles
for those invalid cases.

Submitted by: ylavic
Reviewed by: ylavic, minfrin, gbechis
Closes #286

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Promote [skip ci]

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vote [skip ci]

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Vote.

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  *) test: added modules/core test cases from trunk.

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  *) test: adding modules/tls test cases from trunk.

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  *) test: adding modules/md test suite

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895947 13f79535-47bb-0310-9956-ffa450edef68

  *) test: ignoring generated config.ini

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895946 13f79535-47bb-0310-9956-ffa450edef68

  * test: updated pytest test/modules/http2 suite from trunk
    with skips for cases where backports have not been done.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895945 13f79535-47bb-0310-9956-ffa450edef68

update after backport. [skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895944 13f79535-47bb-0310-9956-ffa450edef68

Merge r1889494,r1892563,r1892917 from trunk:

     - mod_proxy_balancer: add missing spaces in HTML output
     - mod_proxy_http: Avoid a double call to apr_table_get()
     - mod_ssl: Fix some typo and doxygen issues
     [Jean-Frederic Clere]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895943 13f79535-47bb-0310-9956-ffa450edef68

vote and promote. [skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895942 13f79535-47bb-0310-9956-ffa450edef68

Update mergeinfo after latest backports [skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895934 13f79535-47bb-0310-9956-ffa450edef68

Propose, vote [skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895933 13f79535-47bb-0310-9956-ffa450edef68

Update proposal.

Note for me: always try building before submitting. It is not because a
patch looks trivial and applies cleanly, that it builds  :(

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895926 13f79535-47bb-0310-9956-ffa450edef68

Backport:

  *) OpenSSL autoconf detection improvement
     trunk patch: http://svn.apache.org/r1834497
     2.4.x patch: svn merge -c 1834497 ^/httpd/httpd/trunk .
     +1: jorton, ylavic, minfrin

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895924 13f79535-47bb-0310-9956-ffa450edef68

Vote and promote.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895923 13f79535-47bb-0310-9956-ffa450edef68

Merge r1895787, r1895905 from trunk: [under CTR for Travis changes]

Add Travis build job building/testing mod_ssl against OpenSSL 3.

Add Travis job for 2.4.x against OpenSSL 3, using APR 1.7/apr-util 1.6.
Disable TEST_MALLOC (enabled by accident) for OpenSSL 3 / trunk job.
Restrict OpenSSL 3 / apr trunk build to non-2.4.x.

Github: closes #285

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895909 13f79535-47bb-0310-9956-ffa450edef68

Merge r1890477, r1895895, r1895907 from trunk: [skip ci]

Add mapping = servlet / encoded

Improve docs for ProxyPass mapping= parameter.

Add a note about aliging mapping= with the backend's.

Submitted by: jfclere, ylavic, ylavic

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895908 13f79535-47bb-0310-9956-ffa450edef68

Vote [skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895906 13f79535-47bb-0310-9956-ffa450edef68

Propose one, defer one. [skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895904 13f79535-47bb-0310-9956-ffa450edef68

Backport.

  *) mod_proxy_connect, mod_proxy: Do not change the status code after we
     already sent it to the client.
     Trunk version of patch:
        https://svn.apache.org/r1895715
     Backport version for 2.4.x of patch:
       https://patch-diff.githubusercontent.com/raw/apache/httpd/pull/283.diff
     Can be applied via apply_backport_pr.sh 283
     +1: rpluem, icing, minfrin

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895903 13f79535-47bb-0310-9956-ffa450edef68

Vote and promote.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895902 13f79535-47bb-0310-9956-ffa450edef68

consolidate CHANGES. [skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895901 13f79535-47bb-0310-9956-ffa450edef68

vote [skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895899 13f79535-47bb-0310-9956-ffa450edef68

cleanup after backport. [skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895898 13f79535-47bb-0310-9956-ffa450edef68

Merge r1895719 from trunk:

  *) mod_http: Correctly sent a 100 Continue status code when sending an interim
     response as result of an Expect: 100-Continue in the request and not the
     current status code of the request. PR 65725 [Ruediger Pluem]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895897 13f79535-47bb-0310-9956-ffa450edef68

vote and promote. [skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895896 13f79535-47bb-0310-9956-ffa450edef68

cleanup after backport [skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895894 13f79535-47bb-0310-9956-ffa450edef68

Merge r1879889,r1879889,r1893644 from trunk:

  *) mod_dav: Some DAV extensions, like CalDAV, specify both document
     elements and property elements that need to be taken into account
     when generating a property. The document element and property element
     are made available in the dav_liveprop_elem structure by calling
     dav_get_liveprop_element(). [Graham Leggett]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895893 13f79535-47bb-0310-9956-ffa450edef68

Merge r1877122, r1879827 from trunk:

Travis docs updates.

Test VPATH build in Travis, update docs.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895892 13f79535-47bb-0310-9956-ffa450edef68

vote and promote [skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895891 13f79535-47bb-0310-9956-ffa450edef68

correction of patch message (not content) I backported. I am stupid. [skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1895889 13f79535-47bb-0310-9956-ffa450edef68