On the trunk:

mod_http2: connection IO event handling reworked. Instead of reacting on 
     incoming bytes, the state machine now acts on incoming frames that are 
     affecting it. This reduces state transitions. 


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


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  *) http: Enforce consistently no response body with both 204 and 304
     statuses.  [Yann Ylavic]



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Resolved in https://lists.apache.org/thread.html/30de08a569bc12161aacc4785d409b86e90702f7d63e398d23c02d5a@%3Cdev.httpd.apache.org%3E



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* mod_proxy: Remove load order and link dependency between mod_lbmethod_*
  modules and mod_proxy by providing mod_proxy's ap_proxy_balancer_get_best_worker
  as an optional function.

PR: 62557


* Remove invalid copy and paste comments

* Always retrieve conditional function. static variable might contain garbage if module was reloaded in a static build.

* Add missing log numbers

* ap_proxy_balancer_get_best_worker cannot be exported and used as an optional
  function at the same time. So rename ap_proxy_balancer_get_best_worker to
  proxy_balancer_get_best_worker and make it static which is then used as an
  optional function and recreate ap_proxy_balancer_get_best_worker as an
  exported thin wrapper of proxy_balancer_get_best_worker.

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


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mpm_winnt: Factor out a helper function to parse the type of an accept
filter and use an appropriate enum for it.

This makes the code in winnt_accept() a bit easier to follow.  As a minor
side effect, it also fixes a small bug where the "unrecognized AcceptFilter
'%s'" log entry would always contain "none" instead of the actually
unrecognized kind of the accept filter.


mpm_winnt: Fix typo in the logged message in winnt_get_connection().


mpm_winnt: Following up on r1801144, use the new accept_filter_e enum
values in a couple of missed places in winnt_accept().

Submitted by: kotkov
Reviewed by: jailletc36, jim (via inspection), wrowe


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conversion from apr_time_t to milliseconds instead
of hard-coded division by 1000.

Backport of r1839780 from trunk.

Submitted by: rjung
Reviewed by: rjung, rpluem, jim


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in milliseconds.

Backport of remaining parts of r1837590 from trunk
(only html mode changes, auto parts were already
backported).

Submitted by: rjung
Reviewed by: rjung, jim, ylavic


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in mod_status when "ProxyStatus" is "On":
add "busy" count to html mode.

Backport of remaining parts of r1837588 from trunk
(only html mode changes, auto parts were already
backported).

Submitted by: rjung
Reviewed by: rjung, jim, ylavic


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server-status proposals back to the list.

I have only applied the uncontroversial "auto"
mode part of the accepted patches.

The "html" part is now back in STATUS (with
adjusted smaller patches) to give some more
time for feedback whether the HTML output
format is allowed to change during a patch
release.


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format.

Followon to r1839533.


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in milliseconds to auto mode.

Partial backport of r1839532 from trunk
(only auto mode changes, html parts not yet
backported).

Submitted by: rjung
Reviewed by: rjung, jim, ylavic


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in mod_status when "ProxyStatus" is "On":
add "busy" count to auto mode and show byte counts
in auto mode always in units of kilobytes.

Partial backport of r1837588 from trunk
(only auto mode changes, html parts not yet
backported).

Submitted by: rjung
Reviewed by: rjung, jim, ylavic


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processes in the "cu" and "cs" values.
Add CPU time of the parent process to the
"c" and "s" values.

Backport of r1837595 from trunk.

Submitted by: rjung
Reviewed by: rjung, jim, ylavic


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MPMs in "auto" mode.  Added number of processes,
number of stopping processes and number
of busy and idle workers.

This changes only the key/value list of the
server-status "auto" output. The data is already
part of the "html" output.

Backport of r1837589 from trunk.


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mod_ratelimit: Don't interfere with "chunked" encoding.

By the time ap_http_header_filter() sends the header brigade and adds the
"CHUNK" filter, we need to garantee that the header went through all the
filters' stack, and more specifically above ap_http_chunk_filter() which
assumes that all it receives is content data.
Since rate_limit_filter() may retain the header brigade, make it run after
ap_http_chunk_filter(), just before AP_FTYPE_CONNECTION filters.

Also, ap_http_header_filter() shouldn't eat the EOS for HEAD/no-body responses.
For instance mod_ratelimit depends on it since r1835168, but any next request
filter may as well to flush and/or bail out approprietely.

This fixes the regression introduced in 2.4.34 (r1835168).
PR 62568.

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


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