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mod_http2: adding regular memory cleanup when transferring large response bodies. This
     reduces memory footprint and avoids memory exhaustion when transferring large files
     on 32-bit architectures. Fixes PR 62325. 



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We already know the length of the string we want to copy, so use 'apr_pstrmemdup()' instead of 'apr_strdup()'.

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Rename ap_fgetline_impl() to ap_fgetline_core(), and do missing EBCDIC
translation in ap_fgetline().

Also restore EBCDIC translation for ap_getline(), as noted by Ruediger this
was changed (unexpectedly) in r1829659.



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This will make it easier to compare with an extraclean jdk9 



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 - more consistently refer to the filters declared via the harness as
   "smart filters"
 - reinforce that the providers are traditional filters.
 - drop some info about the optional type parameter
 - elaborate on examples



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Use the "c" highlight for API description.

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If this handler will not handle the request, no need to waste bytes in the request pool.

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It allows to read a line directly from an input filter, in blocking mode
or not. Since no request_rec is needed, a pool may be given.

Existing ap_[r]getline() function are now based off ap_fgetline() by calling:
    ap_fgetline(s, n, read, r->proto_input_filters, flags, bb, r->pool);

Will follow up with a new ap_get_mime_headers_*() flavor which can be used by
any filter that needs non-blocking and not necessarily has a request_rec (e.g.
ap_http_filter() to read proxied response trailers).



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Keep using ap_rgetline() as before r1829573, since ap_rgetline_core() is
EBCDIC agnostic.



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We still need them when folding, other than AP_GETLINE_FOLD itself of course.



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ResponseFieldSize actually applies to headers (not body), so the comment was
valid but did match the code (addressed by r1829642 still).



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If f->r->proxyreq is PROXYREQ_PROXY or PROXYREQ_REVERSE in ap_http_filter(),
we are still handling the request, not the response where LimitRequestBody
does not apply.



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Fix the number of available load balancer scheduler algorithms and add a link to the corresponding module. (lbmethod_heartbeat was missing in the list)

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Fixes response header thrown away after the previous one was considered too
large and truncated.

PR 62196.



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This tells the ap_getline() family of functions to consume the end of line
when the buffer is exhausted.

PR 62198.



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  for a vhost if SSLEnable is not used and no certs are configured,
  even if the Listen protocol is "https".  Restores behaviour to that
  prior to r1809303 for configs which would now otherwise fail at
  startup.


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Fix an example to add these surrounding quotes to be consistent and in line with 2.4.x

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  to take SSLConnRec * out parameter rather than SSL *.

* modules/ssl/ssl_engine_kernel.c (ssl_hook_UserCheck): Use it here.
  (ssl_hook_Fixup): Adjust use.


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consistently.

* modules/ssl/ssl_util.c (modssl_request_is_tls): New function.

* modules/ssl/ssl_engine_kernel.c (ssl_hook_Fixup): Use it.

* modules/ssl/mod_ssl.c (ssl_hook_http_scheme, ssl_hook_default_port):
  Use it.

PR: 61519


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If any, pass pending meta bucket down the chain before leaving.



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All meta buckets are now aggregated (besides FLUSH) and forwarded down
the chain, and the output filter bails out on EOS.

Proposed by: Micha Lenk <micha lenk.info>



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  fails, r1053230 removed all the places where config_error was set.


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