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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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include the scheme in the error message about missing a 
mod_proxy_submodule (mod_proxy_$usually_a_scheme)


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


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Allow WatchdogInterval to be sub 1 second

Allow finer control over hcheck intervals... minimum is whatever
the watchdog slice is.

Fix remaining lint from ms capability for hchecks.

userland change = we now are OK w/ ms


Submitted by: jim
Reviewed by: jim, covener, ylavic


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mod_http2: version bump, partial fix for stream response getting stuck, see https://github.com/icing/mod_h2/issues/143

mod_http2: signalling produce IO before waiting on beam buffer to drain.

mod_http2: non-dev version for backport

Submitted by: icing
Reviewed/backported by: icing, steffenal, ylavic


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Add an Override Class Index

This page pulls in directives that declare an <override> element and
groups them by class. The documentation for each class comes from
overrides.xml. Any undocumented classes are flagged with a boilerplate
fallback text (this situation is only likely to occur with a misspelling
or otherwise invalid <override> somewhere else in the documentation).

override index: clarify this doc's purpose

Based on feedback by elukey.
Submitted by: jchampion
Reviewed by: jchampion, jim, icing


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Make sure updatelbstatus() is NULL

Submitted by: jim
Reviewed by: jim, covener, ylavic


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buildconf: allow configuration without APR sources

Previously we required copying the APR (and APR-util) source code into
srclib or some other location on disk in order to build httpd directly
from source. This is annoying if you're on a distribution that already
has the required files in its APR dev packages.

Practically speaking, if you're not building an official distribution
tarball, you only need the following files:

1) config.guess
2) config.sub
3) find_apr.m4
4) find_apu.m4
5) PrintPath

1 and 2 come from automake. 3 and 4 are included in some distributions'
(e.g. Debian's) development packages for APR/-util. That leaves
PrintPath, which has not changed meaningfully in over a decade and is
checked in completely here.

Passing an apr-config executable to buildconf's --with-apr option will
now enable a mode in which the above files (minus PrintPath) are copied
from their respective homes, removing the need for APR sources on disk.
Otherwise, if a source tree is passed, the current behavior is retained
and all of the above files are copied from APR directly.

buildconf: add --help for the new behavior

buildconf's behavior is a little complicated (and was made more so with
apr-config mode), so add some self-documentation.

buildconf: check in APR[-util] m4 macros

Suggestion by wrowe. These files haven't changed in years; since we need
them anyway, check them in directly. buildconf will still copy over the
latest versions during setup, and SVN will tell us if there are any
changes.

Submitted by: jchampion
Reviewed by: jchampion, jim, ylavic


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