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event: Avoid possible blocking in the listener thread when shutting down
connections. PR 60956.

start_lingering_close_nonblocking() now puts connections in defer_linger_chain
which is emptied by any worker thread (all atomically) after its usual work,
hence any possibly blocking flush and lingering close run outside the listener.

The listener may create a dedicated worker if it fills defer_linger_chain or
while it's not empty, calling push2worker with a NULL cs.

The state machine in process_socket() is slighly modified to be able to enter
with CONN_STATE_LINGER directly w/o clogging_input_filters to interfer.

New abort_socket_nonblocking() allows to reset connections when nonblocking is
required and we can't do much about the connection anymore, nor we want the
system to linger on its own after close().

Many thanks to Stefan Priebe for his heavy testing on many event's changes!


Submitted by: ylavic
Reviewed by: ylavic, jim, icing


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nor corrections.--Cette ligne, et les suivantes ci-dessous, seront ignorées--

M    manual/caching.xml.fr


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mod_speling/PR 38923: don't embed Referer in link in error page.

Submitted by: niq
Reviewed by: niq, ylavic, elukey


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loadfactor now decimal

Umm. This is C :)

Fix remaining lint from ms capability for hchecks.

format typo

Reviewed by: jim, humbedooh, ylavic


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Exclude MPM modules from automatic LoadModule
enabling when configure was called with
-enable-load-all-modules. The default MPM
should still get enabled automatically.


Use different variables to track normal
modules and MPMs during build.

Normal modules and MPMs follow different
rules in the config, e.g. we are only
allowed to have one active LoadModule
for an MPM in the config.

As a side effect, LoadModule for MPMs
will now come before LoadModule for
the normal modules.


Makefile.in: fix MPM_MODULES typo
Submitted by: rjung, jchampion
Reviewed by: jchampion, icing, ylavic


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htdigest: prevent buffer overflow when strings in lines are too long.

Reported by: Hanno Böck
PR: 61511



Update CHANGES after r1808008
Submitted by: elukey
Reviewed by: elukey, icing, ylavic


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https://svn.apache.org/r1807754



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Looks fine here though.

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Add logic to read the Upgrade header and use it in the response.
Use we you are proxying to a server that has multiple upgrade on the same IP/Port.
PR 61142

Submitted by: jfclere
Reviewed by: jfclere, jim, covener


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Replaced the old list with what currently found in
https://httpd.apache.org/docs/current/mod/directives.html

This should allow a better highlight of new directives
like the mod_http2's ones



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