Proposed by: Arne de Bruijn <apache arbruijn.dds.nl
Reviewed by: ylavic


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succeeds, it is the new reference for further renegotiation or SNI check.


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Failing to do this may lead to a race condition where we send a new request
before the backend really closes the connection (or lost SSL-Alert/FIN make
us think the connection is still alive, until the retransmission).


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This has been undocumented for about 3 years now (see r1415960)

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Also, check c->aborted before apr_socket_shutdown() because it is set earlier,
and there is no point in calling shutdown() before close().


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Make systems without unlink() semantic happy by destroying (detaching) the SHM
before removing the base file.
Windows is supposed to have the "delete on last handle closed" semantic but yet
fails here when this handle is owned by the same process (go figure!).


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as possible, so that hooks/modules can query it at config stage.
This is (e.g.) needed by r1702501 for PR 58024.


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r1702450 changed the behaviour of slotmem_{create,attach}() when given
given an absolute (SHM file )name.
Don't mangle the SHM file name in this case, it's up to the caller to
provide a unique name per call when this matters.


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httpd compiles warning free on gcc and every new warning will be treated as an error, standard c-89 is enforced

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changing r->protocol to HTTP/2 for all directly handles requests, fixing handling of H2SerializeHeader config to have an effect

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by Protocols/ProtocolsHonorOrder in r1692486/r1695727)


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instead of prepending !aNULL:!eNULL:!EXP: (as was the case in 2.4.7
and later). Enables support for configuring the SUITEB* cipher
strings introduced in OpenSSL 1.0.2. PR 58213.

Apply the same treatment to the "SSLOpenSSLConfCmd CipherString ..." directive.


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Use the generation number from the MPM (AP_MPMQ_GENERATION) since AP_SQ_CONFIG_GEN is irrelevent
in non-forked MPMs children.

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Rename ap_slotmem_instance_t's field 'name' to 'fname' since it really stores
the file path/name of the file-based SHM.


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restart when new ones are added (Windows and OS/2 only).  PR 58024.

Since Windows and OS/2 don't have the unlink() but the "delete on last close"
semantic for opened files being removed, we can't reuse the same SHM files
names for processes of different generation.  Let's append the generation
number in the files names for those.

This commit also axes unused Unix specifics about mutexes/semaphores.


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For example, sparse spotted that the following line was spurious:
        newcond->flags &= ~CONDFLAG_NOCASE;
It this particular case, 2 bits were resetted (instead of only 1). This was harmless because the first bit (i.e. CONDFLAG_NONE) is never tested as-is.

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