threaded, down to the MPM itself.
  (server/mpm/FOO/config.m4, which runs before the actual MPM selection)

server/mpm/config.m4 makes some general platform checks that can be used
for MPM decisions, and contains some functions related to MPMs.

  XXX The check here for whether APR_POLLSET_THREADSAFE is available
      is a rough approximation and needs to be replaced by a run-time
      check.

Replace the limited per-platform hard-coded MPM selection and the
current defaulting to event (whether or not it works) with a selection
based on which MPMs work on the platform, as reported by the MPMs 
themselves.
  (config2.m4, which runs after the MPMs record whether they are supported)

  Order of preference:

  WinNT (mingw32 only)
    then Event
      then Worker
        then Prefork



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Dynamically allocate the AF_UNIX sockaddr based on the required filename size.
For some platforms (e.g., Solaris, OS X, FreeBSD), this allows longer
socket filenames to be used.

When the name is too long, the failure reporting is more consistent and a 
socket with truncated pathname is not left stranded.  The user still needs
to use ScriptSock to specify a shorter name.

An extra unlink() failure message may be generated when attempting to clean 
up the socket after a daemon initialization error; the message is surpressed 
for ENOTENT, but not for ENAMETOOLONG.

PR: 47037



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I'll still pay off if somebody does it legitimately, but I haven't been
to Apachecon in ages so we'll have to work out a different delivery
mechanism.  With the stability of the 2.0.x and 2.2.x releases and
Moore's Law in effect for the last decade, it might be possible...



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Translated by: Nilgün Belma Bugüner <nilgun belgeler.org>
Reviewed by:  Orhan Berent <berent belgeler.org>

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Translated by: Nilgün Belma Bugüner <nilgun belgeler.org>
Reviewed by:  Orhan Berent <berent belgeler.org>

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Submitted by: mturk


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  body by closing the connection to the backend in this case instead of reusing it.

PR: 46949
Reviewed by: jim, wrowe


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(Thanks Rüdiger).


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change the mpm hooks to return OK/DONE instead of 0/1


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data of the AJP 13 protocol.  Since the servlet spec allows
to retrieve it via getRemotePort(), we provide the port to
the Tomcat connector as an additional request attribute.
Modern/future Tomcat versions know how to retrieve
the remote port from the attribute AJP_REMOTE_PORT.

See:
https://issues.apache.org/bugzilla/show_bug.cgi?id=41263
http://svn.eu.apache.org/viewvc?view=rev&revision=756926
http://svn.eu.apache.org/viewvc?view=rev&revision=757223


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unbundled modules an MMN to check for


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calls to ap_mpm_query() must be deferred until after the register-hooks hook, since that's 
where the MPM registers its mpm-query hook


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* where needed, base on APR_VERSION_AT_LEAST() so we remember what this is about
* where not, axe


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  stricter checking of remote server certificates.

  (docs/manual/mod/mod_ssl.xml)
    Documentation of SSLProxyCheckPeerExpire and SSLProxyCheckPeerCN.

  (modules/proxy/mod_proxy_http.c)
    Set the hostname of the request URL as note on the connection.

  (modules/ssl/ssl_private.h)
    Add proxy_ssl_check_peer_expire and proxy_ssl_check_peer_cn fields to
    the SSLSrvConfigRec.

  (modules/ssl/ssl_engine_config.c)
    Directives stuff for SSLProxyCheckPeerExpire and SSLProxyCheckPeerCN.

  (modules/ssl/ssl_engine_io.c)
    Check whether the remote servers certificate is expired / if there is a
    mismatch between the requested hostanme and the remote server certificates
    CN field.
    Be able to parse ASN1 times.

  (modules/ssl/mod_ssl.c)
    Directives stuff for SSLProxyCheckPeerExpire and SSLProxyCheckPeerCN.


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. ap_mpm_query() can return APR_EGENERAL if called too early (for debugging a module)
. some hypothetical module which implements the mpm-query hook can bypass the MPM
  with APR_ENOTIMPL


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  makes no sense with loadable MPMs
axe the unnecessary MPM_DIR build variable
move the stray APACHE_SUBST(MPM_LIB) from configure.in to server/mpm/config.m4, where
  the other MPM_foos are handled


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When a script returns a no-body response code, pretend it was a HEAD
request so as to drop any body the script might erroneously generate.


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mention SIGQUIT/3 not being processed by the signal handler.  

SIGQUIT may unfortunately be a go-to signal for java users.



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consistency with existing APIs (e.g., slotmem)

don't bother changing the MMN, which doesn't reflect recent -dev changes anyway


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The watchdog has zero interval, leaving to the callback to determine the running loop.

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This allows to break the blocked callbacks

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     returns EINPROGRESS and a subsequent poll() returns only POLLERR.
     Observed on HP-UX. 



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the mpm_get_child_pid hook is unnecessary, as was the per-MPM MPM_CHILD_PID() macro which it replaced

axe this new hook, and use ap_get_scoreboard_process() instead


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