Cleanup the client to backend brigade before returning an error (if any) to avoid buckets lifetime issues (backend connection's pool destroyed before request's one). PR 50335.
Suggested by rpluem.

Submitted by: ylavic
Reviewed/backported by: jim


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mod_proxy_http: don't recycle backend connections known to be closed (eg. EOS by close).
This saves a useless ap_is_socket_connected() call when reused.

Submitted by: ylavic
Reviewed/backported by: jim


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Log an error in mod_proxy_http when reading the request body fails.
Follow-up to r1538776 where incomplete bodies are detected and an error returned through the input filters.


Submitted by: ylavic
Reviewed/backported by: jim


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Translated by: Nilgün Belma Bugüner <nilgun belgeler.gen.tr>
Reviewed by:  Orhan Berent <berent belgeler.gen.tr>

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Translated by: Nilgün Belma Bugüner <nilgun belgeler.gen.tr>
Reviewed by:  Orhan Berent <berent belgeler.gen.tr>

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Move draft-ietf-httpbis-p1-messaging-23 fixes to proposed backport (was being worked) like in 2.2.x, with my +1 vote.

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http://httpd.apache.org/docs/2.4/mod/mod_headers.html#comment_2245



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  *) mod_rewrite: Add RewriteOptions InheritDown, InheritDownBefore,
     and IgnoreInherit to allow RewriteRules to be pushed from parent scopes
     to child scopes without explicitly configuring each child scope.
     PR56153. 

Submitted By: Edward Lu
Committed By: covener

Submitted by: covener
Reviewed/backported by: jim


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