backport of latest mod_http2 related changes.



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The typo is already fixed in trunk

+ synch a bit with trunk (tab vs space, trailing space)

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Backport of r1776956 from trunk.


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mod_http2: adding support for MergeTrailers directive. 

mod_http2: limiting DATA frame sizes by TLS record sizes in use on the     
    connection. Flushing outgoing frames earlier. 



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Sébastien Santoro (dereckson AT espace-win.org)
sent a bug report about one typo in core.xml
and I executed the aspell tool on the whole file.



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Because of the missing upper case, "La documentation de cette directive n'a pas encore t traduite. Veuillez vous reporter la version en langue anglaise." is displayed.

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mod_http2: removing debug logs leftover in previous commit

* modules/http2/h2_bucket_beam.c
 removed log warnings from debug session


Modified:
   httpd/httpd/trunk/modules/http2/h2_bucket_beam.c



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Cleanup mod_http2 beamer registry on server reload. Fixes PR60510.

* modules/http2/h2_bucket_beam.c
  register cleanup function on installation that NULLs the beamer
  registry on pool cleanup.

Patch by: Pavel Mateja <pavel@verotel.cz
         me



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pass along error buckets

In 2.4, they are generated by LimitRequestBody failures. trunk no 
longer uses error buckets in this path, but someone else could.

PR60375

Submitted By: Eric Covener,Lubos Uhliarik <luhliari  redhat.com>
Committed By: covener



Submitted by: covener
Reviewed/backported by: jim


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http_header_filter: on check_headers() failure, use AP_FILTER_ERROR and EOC
semantics to respectively warn the caller and cleanly terminate the connection
afterwards.

Suggested by: rpluem


Submitted by: ylavic
Reviewed/backported by: jim


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Fix strict Host: header checking on EBCDIC

on zOS, isascii() really means 7 bit ascii, but our strings
are in ebcdic for 99.95% of the lifetime of the server.



remove initial isascii check entirely

We are already checking an even narrower set of characters
just below.


Submitted by: covener
Reviewed/backported by: jim


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Silence compiler warning:
"686: warning: 'ok' may be used uninitialized in
this function"
This is a false positive, because the value of "ok"
will only be used if stapling_get_cached_response()
sets "rsp" to non-NULL in which case it will always
have set "ok".

Submitted by: rjung
Reviewed/backported by: jim


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* Silence compiler warning
Submitted by: rpluem
Reviewed/backported by: jim


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mod_http2: version bump after backport

* modules/http2/h2_version.h: increased version number



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Merge r1775813 from trunk:

Fix mod_h2/github issue #126: correct lifetime of data sent on temp pools

* modules/http2/h2_bucket_beam.c 
 - ignore send pools that are sub-pools of the existing one
 - added h2_beam_send_from() to allow explicit registering of the
   correct pool for the sending

* modules/http2/h2_bucket_beam.h
 - add prototype for h2_beam_send_from()

* modules/http2/h2_mplx.c
 - adding logging of output beam state

* modules/http2/h2_stream.c
 - register stream pool for sending data on input beam

* modules/http2/h2_task.c
 - register task pool on output beam on creation
 - adding trace logging

* modules/http2/h2_proxy_session.c
 - fixing a type in a comment while we're at it



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