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

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* server/mpm/prefork/prefork.c (child_main): If apr_pollset_poll()
  fails with EINTR and die_now has been set (indicating a graceful
  stop/restart), terminate the child quickly rather than re-entering
  poll().

Submitted by: jorton
Reviewed by: jim


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* server/mpm/prefork/prefork.c (child_main): Unlock the mutex before
  terminating in the multi-listener poll error path.

Submitted by: jorton
Reviewed by: jim


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* server/mpm/prefork/prefork.c (child_main): Stop processing new
connections if shutdown_pending is set, i.e. when SIGTERM is received
in single-proecss mode.

Submitted by: Garrett Rooney <rooneg apache.org>
PR: 38848

Submitted by: jorton
Reviewed by: jim


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Submitted by: kawai
Reviewed by: takashi

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Submitted by: OKANO Takayoshi <kano na.rim.or jp>
Reviewed by: kawai, takashi

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far looks good, so note these so I don't forget :)


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Submitted by: OKANO Takayoshi <kano na.rim.or jp>
Reviewed by: takashi


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English Revision: 421100

Submitted by: kawai
Reviewed by: takashi

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*  mod_proxy_http.c
   Ensure that the EOC bucket is inserted BEFORE an EOS bucket in bb as
   some resource filters like mod_deflate pass everything up to the EOS
   down the chain immediately and sent the remainder of the brigade later
   (or even never). But in this case the ap_http_header_filter does not
   get out of our way soon enough.

   http_filters.c
   Remove all data buckets that are in a brigade after an EOC bucket
   was seen, as an EOC bucket tells us that no (further) resource
   and protocol data should go out to the client. OTOH meta buckets
   are still welcome as they might trigger needed actions down in
   the chain (e.g. in network filters like SSL).
   Remark 1: It is needed to dump ALL data buckets in the brigade
             since an filter in between might have inserted data
             buckets BEFORE the EOC bucket sent by the original
             sender and we do NOT want this data to be sent.
   Remark 2: Dumping all data buckets here does not necessarily mean
             that no further data is send to the client as:
             1. Network filters like SSL can still be triggered via
                meta buckets to talk with the client e.g. for a
                clean shutdown.
             2. There could be still data that was buffered before
                down in the chain that gets flushed by a FLUSH or an
                EOS bucket.

PR: 37770

Submitted by: rpluem
Reviewed by: jim


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