Followup to 1855409.
CTR docs.


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mod_reqtimeout: factorize structs and code.

With a bit of macro magic, this is to avoid more code duplication when adding
new stages (next commit will add TLS/handshake timeouts handling in addition to
existing header and body ones).

No functional change here.


mod_reqtimeout: Allow to configure (TLS-)handshake timeouts.

The timeouts apply between the process_connection and pre_read_request hooks.
They are disabled by default for compatibily reasons.


mod_reqtimeout: follow up to r1853906: adjust hooks priorities comments.


mod_reqtimeout: follow up to r1853901: fix macro args.


mod_reqtimeout: follow up to r1853901: init stage name outside INIT_STAGE().

It helps both code readability where stages are initilized and potential
logging in the input filter (even if the stage is disabled).


mod_http2: fix for latest mod_reqtimeout change re handshake timeouts

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


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mod_cache_socache: avoid pool to heap reallocation.

Below some threshold, the previous code tried free (sub-)pooled memory ASAP by
moving small buffers (< capacity / 2) to a heap bucket. But this is not really
an optimization because first it requires at some point to allocate more than
the configured capacity, and second since this happens during response handling
the pool is about to be destroyed soon anymay.

This commit simply keeps the data in the subpool and uses a pool bucket for the
output brigade to take care of the lifetime until it's consumed (or not).


Follow up to r1853874: CHANGES entry.
Submitted by: ylavic
Reviewed by: ylavic, icing, jim


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mod_http2: enable re-use of slave connections again.


mod_http2: fixed slave connection keepalives counter.

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


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  *) http: Fix possible empty response with mod_ratelimit for HEAD requests.



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* dav_stream_response processes data that has been allocated from the propdb
  pool. Hence close the propdb *after* dav_stream_response which clears thei
  probdb pool.

Submitted by: rpluem
Reviewed by: jailletc36, icing, ylavic


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mod_ssl: AH10129 from ERR to DEBUG level.

No error here, just debug information.

Submitted by: ylavic
Reviewed by: ylavic, rpluem, jorton


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MPMs unix: bind the bucket number of each child to its slot number

We need not remember each child's bucket number in SHM for restarts, for the
lifetime of the httpd main process the bucket number can be bound to the slot
number such that: bucket = slot % num_buckets.

This both simplifies the logic and helps children maintenance per bucket in
threaded MPMs, where previously perform_idle_server_maintenance() could create
or kill children processes for the buckets it was not in charge of.

Submitted by: ylavic
Reviewed by: ylavic, rpluem, jorton


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Clarify the existing behavior.

* modules/generators/mod_info.c: Constify fixed tables and mark
  module-private global variables static. No functional change.

Axe an old and apparently out-dated comment.

There is a typo in the comment.
HN_UPDATE_SEC has been renamed HM_UPDATE_SEC.
The TODO seems to have been taken into account in r759862.

* modules/filters/mod_deflate.c
  (deflate_out_filter): Fix typo setting output note. (Coverity warning)
  (deflate_in_filter): Fix redundant assignment. (clang warning)

* modules/md/md_acme_authz.c (md_acme_authz_update): Fix typo in log
  message.

* modules/dav/main/mod_dav.c (dav_method_propfind): Tag the scratchpool.

Submitted by: minfrin, jorton, jailletc36
Reviewed by: jailletc36, icing, jorton


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Fix a race condition.  Authentication with valid credentials could be
refused in case of concurrent accesses from different users.

PR: 63124
Submitted by: Simon Kappel <simon.kappel axis.com>
Reviewed by: jailletc36, icing, jorton


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