mod_proxy_fcgi: avoid loops serving proxied error documents

This commit should solve the issue indicated in PR 55415.
Httpd loops while serving a error document if:
1) The error document's content is proxied.
2) ProxyErrorOverride is set.
The solution proposed is to limit the use of ap_die only
to the initial request. I tested the change with very basic
scenarios but I am not sure if I got all the use cases,
feedback is really welcome.


Submitted by: elukey
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1757671 13f79535-47bb-0310-9956-ffa450edef68

Force mod_proxy_fcgi to read the whole FCGI response 
even when the content has not been modified (HTTP 304).

The problem is described in PR 59838. This patch should 
avoid bogus reads causing the following issues with
HTTP 304 responses:
- AH01068: Got bogus version X, expected 1
- AH01069: Got bogus rid X, expected 1
- AH01075: Error dispatching request to :
- HTTP 503 logged instead of 304 (even if the external 
  client gets correctly a 304)

As discussed on IRC the HTTP_PRECONDITION_FAILED use case
should be handled like the HTTP_NOT_MODIFIED one but it will
be done in a separate commit.


Submitted by: elukey
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1757670 13f79535-47bb-0310-9956-ffa450edef68

Fix spelling in comments and text files.
No functional change.
PR 59990

Submitted by: rjung
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1757669 13f79535-47bb-0310-9956-ffa450edef68

merge of 1752145,1753498,1753541,1754129,1754414,1754534,1755323,1756844,1757524,1757534,1757540 from trunk

mod_http2: backport of latest changes
 - intermediate responses
 - graceful shutdown of connections
 - ht debug draft update



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1757542 13f79535-47bb-0310-9956-ffa450edef68

* Prevent redirect loops between workers within a balancer by limiting the
  number of redirects to the number balancer members.

PR: 59864

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


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1756563 13f79535-47bb-0310-9956-ffa450edef68

* Do not overwrite r->status with access_status if access_status is OK or DONE
  as in this case r->status might contain the true response code.

PR: 59869

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


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1756562 13f79535-47bb-0310-9956-ffa450edef68

mod_dav: Add dav_begin_multistatus, dav_send_one_response,
dav_finish_multistatus, dav_send_multistatus, dav_handle_err, 
dav_failed_proppatch, dav_success_proppatch to mod_dav.h.

Submitted by: minfrin
Reviewed by: minfrin, jim, ylavic


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1756561 13f79535-47bb-0310-9956-ffa450edef68

mod_dav: Add support for childtags to dav_error.

Submitted by: minfrin
Reviewed by: minfrin, jim, ylavic


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1756560 13f79535-47bb-0310-9956-ffa450edef68

httpoxy workarounds, first draft patch as published for all 2.2.x+ sources

Optimization to httpoxy workaround, for 2.4.23+ only.

Submitted by: Dominic Scheirlinck <dominic vendhq.com>, ylavic
Reviewed/backported by: wrowe, jim, ylavic


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1756559 13f79535-47bb-0310-9956-ffa450edef68

PR59815: rewrite per-directory + fcgi broken in 2.4.23

remove the query string from r->filename before calculating environment
(SCRIPT_FILENAME) in mod_proxy_fcgi.  Before PR59618, php-fpm would
see proxy:fcgi:// and do some of this same stripping.




Submitted by: covener
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1755077 13f79535-47bb-0310-9956-ffa450edef68

PR59844: stack-allocated ap_expr_info_t returned from mod_include




git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1753782 13f79535-47bb-0310-9956-ffa450edef68

mod_http2: removed timeouts on master connection while reuqest are being processsed
mod_http2: new H2CopyFiles directive



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1753542 13f79535-47bb-0310-9956-ffa450edef68

mod_http2: fixes flush handling for SETTINGS when no streams are open



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1752095 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1750841 13f79535-47bb-0310-9956-ffa450edef68

modssl: reset client-verify state when renegotiation is aborted
Submitted by: icing
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1750808 13f79535-47bb-0310-9956-ffa450edef68

Fix 'x' command processing in mod_sed.

This has been tested using a slighly modified example taken from:
    https://blogs.oracle.com/basant/entry/using_mod_sed_to_filter
(OutputSed "s/.\*//"             has been changed in                OutputSed "s/.*//")

OutputSed "/Sunday/ {"
OutputSed "h"
OutputSed "s/.*//"
OutputSed "N"
OutputSed "s/\^.//"
OutputSed     "/Monday/ {"
OutputSed         "x"
OutputSed         "s/Sunday/Monday/"
OutputSed         "x"
OutputSed         "s/Monday/Tuesday/"
OutputSed         "H"
OutputSed         "g"
OutputSed     "}"
OutputSed "}"

Add CHANGES entry for r1749401
Submitted by: jailletc36
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1750481 13f79535-47bb-0310-9956-ffa450edef68

of only 'few' or 'none' as fatal, but continue the ./configure

Submitted by: trawick
Backports: r1396440 [only the acinclude.m4, config5.m4 change was N/A]
Reviewed by: wrowe, rpluem, ylavic



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1750254 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1749792 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1749775 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1749336 13f79535-47bb-0310-9956-ffa450edef68

Merge r1749151 from trunk:

mod_http2: fix for request abort when connections drops, introduced in 1.5.8
Submitted by: icing
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1749331 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1748762 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1748647 13f79535-47bb-0310-9956-ffa450edef68

mod_http2: more rigid error handling in DATA frame assembly



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1748536 13f79535-47bb-0310-9956-ffa450edef68

failures under Visual Studio 2015 and other mismatched MSVCRT flavors.

PR: 59630
Submitted by: Jan Ehrhardt <phpdev ehrhardt.nl>



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1748449 13f79535-47bb-0310-9956-ffa450edef68

to opt-in previous behaviour (2.2) with CRLs verification when checking
certificate(s) with no corresponding CRL.

Submitted by: ylavic
Reviewed by: icing, minfrin


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1748338 13f79535-47bb-0310-9956-ffa450edef68

according the number of listeners buckets.

Submitted by: ylavic
Reviewed by: jim, minfrin


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1748336 13f79535-47bb-0310-9956-ffa450edef68

for case-insensitive C/POSIX-locale token comparison.

Submitted by: wrowe
Reviewed by: jim, minfrin


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1748334 13f79535-47bb-0310-9956-ffa450edef68

"UserDir" directive

Submitted by: jailletc36
Reviewed by: jim, minfrin


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1748332 13f79535-47bb-0310-9956-ffa450edef68

Cache-Control header parsing.

Submitted by: jailletc36
Reviewed by: jim, minfrin


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1748330 13f79535-47bb-0310-9956-ffa450edef68

     Example:

        Included configuration files:
          (*) .../conf/httpd.conf
            (517) .../conf/extra/proxy-html.conf
              (91) /dev/null

Submitted by: Jacob Champion <champion.pxi gmail.com>
Reviewed by: covener, gsmith, minfrin


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1748327 13f79535-47bb-0310-9956-ffa450edef68

SCRIPT_FILENAME to a FastCGI server. PR59618.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1748324 13f79535-47bb-0310-9956-ffa450edef68

mod_dav: Add dav_get_provider_name() function to obtain the name
of the provider from mod_dav.

Submitted by: minfrin
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1748215 13f79535-47bb-0310-9956-ffa450edef68

mod_proxy_http2: properly care for HTTP2 flow control of the frontend
     connection is HTTP/1.1. [Patch supplied by Evgeny Kotkov]



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1748168 13f79535-47bb-0310-9956-ffa450edef68

mod_http2: improved cleanup of connection/streams/tasks to always
     have deterministic order regardless of event initiating it. Addresses
     reported crashes due to memory read after free issues. 



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1747532 13f79535-47bb-0310-9956-ffa450edef68

mod_http2: backport of 1.5.7



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1747194 13f79535-47bb-0310-9956-ffa450edef68

such that disabling either disables both, and that enabling either will
trigger the more comprehensive SSLProxyCheckPeerName behavior.

Only a single configuration remains to enable the legacy behavior, which
is to explicitly disable SSLProxyCheckPeerName and enable SSLProxyCheckPeerCN.

Changes to the proxy config directives leads us to a different 2.4 fix...
https://github.com/wrowe/patches/blob/master/fix_proxy_check_peer-2.4.x.patch

Backports: 1746647
Reviewed by: wrowe, icing, rpluem



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1747069 13f79535-47bb-0310-9956-ffa450edef68

Add the <!--#comment ... --> syntax.
Idea from Rob.
Submitted by: jailletc36
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1747054 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1745137 13f79535-47bb-0310-9956-ffa450edef68

Merge r1722177, r1722195, r1722229, r1722320, r1722328, r1722334, r1722350, r1722351, r1722358, r1722377, r1723953, r1724879, r1724992, r1724993, r1724995, r1725018, r1725031, r1725120, r1725328, r1725387, r1725489, r1725498, r1725499, r1725523, r1725545, r1725567, r1725581, r1725602, r1725822, r1725967, r1726038, r1726049, r1726051, r1726052, r1726055, r1725090, r1728326, r1737020 from trunk:

Commit framework impl of health-check module plus
required changes. The actual health checking is
currently in progress, but wanted to add in at
this stage.

Make aware of new status: Failed Health Check.
Store the number of current passes/fails in shm

finish looping logic... place-holder for actual checking

Better check

move to per server conf, useful for adding HealthCheckCondition

Now implement the condition ruleset definition. The
actual checking will be done in the actual health check
routine.

just check watched servers... use 'hc' prefix for sub directives

Check that we have names for both templates and
...