Documentation update: part 2

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Documentation rebuild

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mod_proxy*.xml: improve connection reuse documentation

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extended warning catch

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Rebuild.

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XML updates.

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Withdraw my mod_proxy_fcgi backport proposal

There has been some discussion over IRC about
possible performance issues with the current
code in certain scenarios (like a simple echo
FCGI backend that returns data as it comes in).

Jacob is working on a different solution, waiting
for his feedback before proceeding any further.

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Propose syslog backport re: PR 60525

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update xforms

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Merge r1802336 from trunk:

UDS does support reuse

Reviewed by: jim

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Agreement between example and explanation

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Easy proposal.

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Merge r1762580, r1762701, r1762702, r1762718, r1762723, r1762742, r1762743, r1774538, r1779354 from trunk:

event: use atomics for *timeout_queue->total since it's updated concurrently,
and move TO_QUEUE_*() macros to functions.

event: add/remove from/to the pollset outside of the critical sections.

We don't need external locking since it's created with APR_POLLSET_THREADSAFE,
hence reduce those sections to the lowest cycles possible.

A spinlock may be interesting instead of the mutex now, we won't block and the
TO_QUEUE_*() and process_timeout_queue() operations are fast...

event: follow up to r1762701: update log tag.

event: avoid unnecessary listener/polling wake ups (context switches) by using
apr_pollset_wakeup(), when implemented, to signal the listener according to the
next timers or timeout queues expiry (updated at insert and maintenance time).

Follow up to r1762718: CHANGES entry.

event: follow up to r1762718.
We still need to kill kept-alive connections in normal/expiry processing if
the workers are busy or dying.

event: follow up to r1762718 and r1762742: put de condition where it belongs.

event: follow up to r1762718.

On graceful shutdown/restart, kill kept-alive connections before poll()ing
again, avoiding to wait for their "normal" timers (before being woken up)
when they remain the last handled connections.

event: follow up to r1762701.
Keep QUEUE_APPEND()+pollset_add() or QUEUE_REMOVE()+pollset_remove() atomic.

Otherwise when a worker adds an entry in some queue (e.g. KA, lingering), it
might race with the listener in the time between the mutex is released and the
pollset is updated; meanwhile the listener might process the queue and find an
entry no yet in its pollset.

For the lingering queue, the entry could then have been used after its pool
destroyed.

Submitted by: ylavic
Reviewed by: ylavic, icing, jim

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Merge r1754164, r1801994, r1801995 from trunk:

mod_proxy_wstunnel: we want to detect whether some response was sent to
the client when forwarding data from the backend to the client, not the
reverse.

Follow up to r1754164: CHANGES entry.

Follow up to r1801994: CHANGES' PR reference.
Submitted by: ylavic
Reviewed by: ylavic, jchampion, jim

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promotes

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some votes

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Note release date for 2.4.27

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Credits.

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Add CHANGES' security entries for 2.4.27.

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Propose backport of r1802040

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Vote.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1801999 13f79535-47bb-0310-9956-ffa450edef68

Propose.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1801997 13f79535-47bb-0310-9956-ffa450edef68

Propose.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1801668 13f79535-47bb-0310-9956-ffa450edef68

Propose fix for PR 61142

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Propose.

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Point to 2.4.28-dev version of patch

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typo

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And we are 2.4.28-dev

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Get ready to tag 2.4.27

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make COMPATIBILITY entries explicit

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more meat re: lua compatibility "break"

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CHANGES: note mod_lua compatibility break

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Merge r1800978 from trunk:

On the trunk:

mod_http2: Simplify ready queue, less memory and better performance. Update
     mod_http2 version to 1.10.7.

Submitted by: icing
Reviewed by: icing, jim, ylavic

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Vote, promote.

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vote on http2 backport

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propose backport

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Fix negotiation type parsing to be strict about "*", "*/*" and "type/*"
comparisons.

Submitted by: wrowe, Robert Święcki <robert swiecki.net>
Backports: r1800917
Reviewed by: wrowe, jim, jchampion

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800956 13f79535-47bb-0310-9956-ffa450edef68

SECURITY: CVE-2017-9788: Uninitialized memory reflection in mod_auth_digest.

The value placeholder in [Proxy-]Authorization headers type 'Digest' was not
initialized or reset before or between successive key=value assignments by
mod_auth_digest.  Providing an initial key with no '=' assignment could reflect
the stale value of uninitialized pool memory used by the prior request, leading
to leakage of potentially confidential information, and a segfault.

Submitted by: wrowe
Backports: r1800919
Reviewed by: wrowe, jim, jchampion

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Vote/promote another.

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Vote/promote one.

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vote

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Two more string parsing oddities for consideration

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Mark backported patch 1800173 in commit 1800215

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800903 13f79535-47bb-0310-9956-ffa450edef68

Merge r1800788 from trunk:

Add mod_proxy_hcheck to generated httpd.spec file.  PR 60506.

Submitted by: ylavic
Reviewed by: ylavic, rpluem, jim

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800862 13f79535-47bb-0310-9956-ffa450edef68

promote

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800861 13f79535-47bb-0310-9956-ffa450edef68

vote on rpm change

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* Vote

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800842 13f79535-47bb-0310-9956-ffa450edef68

mod_lua: Improve compatibility with Lua 5.1, 5.2 and 5.3.
PR58188, PR60831, PR61245.

CTR

The following lua 5.2 and 5.3 compat change
should be checked for runtime correctness
by someone more knowledgeable about lua.

Index: modules/lua/lua_apr.c
--- modules/lua/lua_apr.c (original)
+++ modules/lua/lua_apr.c Tue Jul  4 20:48:43 2017
@@ -82,7 +82,11 @@ static const luaL_Reg lua_table_methods[
 int ap_lua_init(lua_State *L, apr_pool_t *p)
 {
     luaL_newmetatable(L, "Apr.Table");
+#if LUA_VERSION_NUM < 502
     luaL_register(L, "apr_table", lua_table_methods);
+#else
+    luaL_newlib(L, lua_table_methods);
+#endif
     lua_pushstring(L, "__index");
     lua_pushstring(L, "get");
     lua_gettable(L, 2);

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Propose.

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Merge r1800594 from trunk:

* Do not apply the strict permissions of the temporary file to a possibly
  existing passwd file.
  This long standing bug was triggered by fixing a bug in APR in r1791029.

PR: 61240

Submitted by: rpluem
Reviewed by: rpluem, ylavic, jim

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800775 13f79535-47bb-0310-9956-ffa450edef68

SECURITY: CVE-2017-9789: Read after free in mod_http2.

When under stress, closing many connections, the HTTP/2
handling code would sometimes access memory after it has
been freed, resulting in potentially erratic behaviour.

Merge r1800689 from trunk:

Disable and give warning when mpm_prefork is encountered.
The server will continue to work, but HTTP/2 will no longer be negotiated.

Submitted by: icing
Reviewed by: icing, ylavic, jim

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800774 13f79535-47bb-0310-9956-ffa450edef68

promote

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Votes on backports

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Votes.

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* Propose

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On the 2.4.x branch:

propose backport of http2/prefork disabling.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800692 13f79535-47bb-0310-9956-ffa450edef68

Note proposed T&R for this Thurs (July 6th)

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Merge r1800306, r1800393 from trunk:

proxy_fcgi: remove FPM-specific logic

Reverts r1780328, r1780329, and their associated followups, which
incorrectly manipulated SCRIPT_NAME by default. All proxy_fcgi.t
regression tests now pass.

PR: 61202

Partial reversal of r1800306... note virtual scripts in notes

Submitted by: jchampion, jim
Reviewed by: jchampion, jim, covener

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800618 13f79535-47bb-0310-9956-ffa450edef68

vote/promote fcgi

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800578 13f79535-47bb-0310-9956-ffa450edef68

vote on fcgi backport

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800507 13f79535-47bb-0310-9956-ffa450edef68

PR61202: add virtual_script note back to backport (un-revert)

Per ML discussion; thanks to Jim for pointing this out.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800472 13f79535-47bb-0310-9956-ffa450edef68

Propose showstopper.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800307 13f79535-47bb-0310-9956-ffa450edef68

Merge r1551611, r1783765, r1788996, r1788998, r1789000, r1795651 from trunk:

Log a warning when the LDAP authn provider is configured but an AuthLDAPURL
isn't -- IOW, avoid silently skipping a misconfigured [or buggy?] LDAP provider.

Follow up to r1772919: update APLOGNO().

Save a few cycles.
'apr_pstrcatv' can compute the length of the new string for us.

Improve indentation

Group bit field values in order to save some memory.

Add an explicit NULL to initialise a field in an authn_provider structure, as done in all other places.  PR 60636
Submitted by: covener, ylavic, jailletc36, jailletc36, jailletc36, jailletc36
Reviewed by: jailletc36, jim, ylavic

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800268 13f79535-47bb-0310-9956-ffa450edef68

Merge r1735906 from trunk:

Avoid a call to 'prep_walk_cache' if possible, just as in 'ap_if_walk' and 'ap_location_walk'
Submitted by: jailletc36
Reviewed by: jailletc36, jim, ylavic

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800267 13f79535-47bb-0310-9956-ffa450edef68

Restore single-char field names inadvertantly disallowed in 2.4.25.
Backports: r1800173
PR: 61220
Submitted by: ylavic
Reviewed by: wrowe, jchampion, ylavic

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800215 13f79535-47bb-0310-9956-ffa450edef68

Vote, promote.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800206 13f79535-47bb-0310-9956-ffa450edef68

Vote, promote.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800193 13f79535-47bb-0310-9956-ffa450edef68

Actually this was a vote for 1800111, not the revised patch

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800188 13f79535-47bb-0310-9956-ffa450edef68

Vote, promote.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800181 13f79535-47bb-0310-9956-ffa450edef68

Propose Yann's alternative

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800176 13f79535-47bb-0310-9956-ffa450edef68

* Vote

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800123 13f79535-47bb-0310-9956-ffa450edef68

Proposed

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800112 13f79535-47bb-0310-9956-ffa450edef68

Merge r1799784, r1799786 from trunk:

Since r1753257, "HEAD" method is registered into the registry hash with the M_GET ID.
(r1757672 in 2.4.x)

We iterate over all the values of the registery, so there is no need anymore to have a special case for "HEAD" in  'make_allow()'. It has its own entry now.

With the current code, we have "HEAD" 3 times in the Allow Header field.
This is because we find M_GET 2 times in the registry hash. The first one gives "GET" and "HEAD" (as the special handling), and the second "HEAD" and "HEAD" (as the special handling).

BTW, use APR_ARRAY_PUSH instead of hand coding it, in oder to have the code more readable.

PR 61207

Add  CHANGE entry
Submitted by: jailletc36
Reviewed by: jailletc36, rpluem, jim

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promote proposal

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vote on 61207

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mod_http2 is no longer experimental nor CTR

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* Vote

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Rebuild.

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XML updates.

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documentation rebuild

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core.xml: Wrap a Define directive sentence in a <note>

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Proposal

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1799787 13f79535-47bb-0310-9956-ffa450edef68

Remove a dead link (/docs/STATUS)
Remove a link to an EOL branch (2.0)

Add some links to APR & APR-Util 1.6.
Add release date for 2.4.26

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combine duplicates

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NOTE CVEs

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smash dup

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And we are now 2.4.27-dev

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Roll on 2.4.26

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xform

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wrong module :) Thx eric

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xform

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more tags

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Note that as of 2.4.26, HTTP/2 is no longer considered "experimental"

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xforms

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no longer experimental

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xforms

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Will be no longer experimental

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Fix Typo.

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Rebuild.

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XML updates.

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