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with the implied *LWS rule, before RFC7230 eliminated the later. Whether
this is actually OWS or BWS is an editorial decision beyond our pay grade.




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no application for this yet in httpd, so hold off adding this function when
we backport the enhancements. ap_scan_http_token was entirely sufficient.
If the community wants this new function, we can add it when backporting
work is complete.

This patch, and the earlier patches Friday actually demanded an mmn major
bump due to struct member changes. In any final backport, new members must
be added to the end of the struct to retain an mmn minor designation.




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mod_http2/mod_proxy_http2: proper 100-continue handling up to backend, more robustness on connection reuse with PING frames


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Remove declaration for dropped ap_has_cntrl().


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Sorry for the noise.


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- ap_scan_http_uri_safe() was removed
- ap_scan_vchar_obstext() was introduced


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Dropped the never-released ap_has_cntrls() as it had very limited 
and inefficient application at that, added ap_scan_vchar_obstext()
to accomplish a similar purpose.

Dropped HttpProtocolOptions StrictURL option, this will be better
handled in the future with a specific directive and perhaps multiple
levels of scrutiny, use ap_scan_vchar_obstext() to simply ensure there
are no control characters or whitespace within the URI.

Changed the scanning of the response header table by check_headers()
to follow the same rulesets as reading request headers. Disallow any
CTL character within a response header value, and any CTL or whitespace
in response header field name, even in strict mode.

Apply HttpProtocolOptions Strict to chunk header parsing, invalid
whitespace is invalid, line termination must follow CRLF convention.



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dav_hooks_vsn.deliver_report() and dav_hooks_vsn.merge() hook
definitions.

* modules/dav/main/mod_dav.h
  (dav_hooks_repository.deliver, dav_hooks_vsn.deliver_report,
   dav_hooks_vsn.merge): Add notes about the API issue.


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behavior in a routine that sends <DAV:response>'s to the output filters.

The dav_send_one_response() function accepts the current head of the output
filter list as an argument, but the actual head can change between calls to
ap_pass_brigade().  This can happen with self-removing filters, e.g., with
the filter from mod_headers or mod_deflate.  Consequently, executing an
already removed filter can either cause unwanted memory usage or incorrect
behavior.

This patch changes the signature of the existing mod_dav's public API,
dav_send_one_response(), because this API is not yet a part of any 2.4.x
release.

* modules/dav/main/mod_dav.c
  (dav_send_one_response): Accept a request_rec instead of an ap_filter_t.
   Write the response to r->output_filters.
  (dav_send_multistatus, dav_stream_response): Update these calling sites
   of dav_send_one_response().

* modules/dav/main/mod_dav.h
  (dav_send_one_response): Adjust definition.


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per http://httpd.apache.org/docs/2.4/mod/core.html#comment_5866

kernel.org links here.



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