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ap_http_filter (HTTP_INPUT) filter


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* Fix cases with non blocking reads from the ap_http_filter input filter where
  chunk size lines or empty lines after a chunk are read incomplete. This can
  lead to a corruption inside the dechunking algorithm.
  This patch has an issue with larger chunk-extensions which need to get thrown
  away since we ignore them anyway.

PR: 19954, 41056
Tested by: niq

* Optimize solution from r609394 and remove chunk-extensions restriction that
  was in r609394.

* Optimize alignment.

Submitted by: rpluem
Reviewed by: rpluem, jim, niq


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we add in other enhancements


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to /Device/Nul as the server is starting up, mirroring unix MPM's.

PR: 43534

Submitted by: Tom Donovan <Tom.Donovan acm.org> and William Rowe

Backports: r609354, r609366

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by recreating the bucket allocator each time the trans pool is cleared.

PR: 11427 #16 (follow-on)
Submitted by: Tom Donovan <Tom.Donovan acm.org>
Backport: r609181


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mod_dav: Fix evaluation of If-Match * and If-None-Match * conditionals.
PR 38034
Patch by Paritosh Shah
Explanation by Werner Baumann

* Style police. No functional changes.

* Avoid SEGFAULT as hooks->set_headers can be NULL. Furthermore do not set the
  ETag header permanently as setting it may not be desired for all responses.

Submitted by: niq, rpluem
Reviewed by: niq, rpluem, chrisd


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Fix handling of buffered request body for per-location SSL
renegotiation when an internal redirect occurs:

* modules/ssl/ssl_engine_io.c (ssl_io_buffer_fill): Remove
protocol-level filters before inserting the buffering filter.
(ssl_io_filter_buffer): Return an EOS if invoked with an empty
brigade; do not remove the filter after exhausting the buffer.
(ssl_io_filter_buffer): Increase the type of the buffer filter to be
AP_FTYPE_PROTOCOL.

PR: 43738
Reviewed by: rpluem, wrowe, jorton


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