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This should save a few bytes in case of early exit and is, IMHO, cleaner.

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HttpProtocolOptions Unsafe StrictWhitespace

I have elected not to preserve any significance to excess whitespace in the
now-deprecated obs-fold code path, that's certainly open for discussion.

This can be reviewed by tweaking t/conf/extra.conf to switch Strict to Unsafe.


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  GCC.


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http protocol tag, url and method appropriately, and attempting 
to extract values even in the presence of unusual whitespace in
keeping with section 3.5, prior to responding with whatever
error reply is needed. Conforms to RFC7230 in all respects,
the section 3.5 optional behavior can be disabled by the user
with a new HttpProtocolOptions StrictWhitespace flag. In all
cases, the_request is regenerated from the parsed components
with exactly two space characters.

Shift sf's 'strict' method check from the Strict behavior because
it violates forward proxy logic, adding a new RegisteredMethods
flag, as it will certainly be useful to some.




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cached entity (key), such that rewrites are taken into account when
running afterwards (CacheQuickHandler off).  PR 21935.
 


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in the client certificate chain.  PR 55786.

This is done by handling an empty cert chain as no/NULL chain.



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to EnforceHTTPProtocol, and invert the default behavior
to strictly observe RFC 7230 unless otherwise configured.
And Document This.

The relaxation option is renamed 'Unsafe'. 'Strict' is no
longer case sensitive. 'min=0.9|1.0' is now the verbose
'Allow0.9' or 'Require1.0' case-insenstive grammer. The
exclusivity tests have been modified to detect conflicts.

The 'strict,log' option failed to enforce strict conformance,
and has been removed. Unsafe, informational logging is possible
in any loadable module, after the request data is unsafely
accepted.

This triggers a group of failures in t/apache/headers.t as
expected since those patterns violated RFC 7230 section 3.2.4.




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s/ap_proxy_check_backend/ap_proxy_check_connection/, and r1756328 really bump the MMN :p

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s/ap_proxy_check_backend/ap_proxy_check_connection/.

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either above in ap_proxy_determine_connection(), or below in
ap_proxy_release_connection().



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Export [ap_]check_pipeline() and use it also for ap_proxy_check_connection(),
so that all the necessary checks on the connection are done before reusing it.



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Followup to r1421305.
PR 56210


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Restore AP_MODE_READBYTES cleared inadvertently in r1756060.


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