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for memcache:

* modules/cache/ap_socache.h (struct ap_socache_hints): New structure.
  Change init callback to take namespace string and hints structure pointer.

* modules/cache/mod_socache_dc.c (socache_dc_init): Adjust accordingly.

* modules/cache/mod_socache_dbm.c (struct ap_socache_instance_t): Rename
  timeout field to expiry_interval.
  (socache_dbm_init, socache_dbm_create): Take expiry interval from
  hints rather than hard-code to 30.
  (socache_dbm_expire): Update for timeout field rename.

* modules/cache/mod_socache_shmcb.c (socache_shmcb_init): Adjust for
  hints and namespace; adjust subcache index sizing heuristics to use
  passed-in hints.

* modules/cache/mod_socache_memcache.c (struct ap_socache_instance_t):
  Add tag, taglen fields.
  (socache_mc_init): Store the passed-in namespace in instance
  structure.
  (mc_session_id2sz): Adjust to not take context, use configured
  tag as string prefix, and not use a return value.
  (socache_mc_store, socache_mc_retrieve, socache_mc_remove):
  Adjust for mc_session_id2sz interface changes.

* modules/ssl/ssl_scache.c (ssl_scache_init): Pass namespace and hints
  to socache provider init function.


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* modules/ssl/ssl_scache.c: Switch to using socache constants.


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Switch mod_ssl to use the ap_socache interface.

* modules/ssl/ssl_scache_shmcb.c, modules/ssl/ssl_scache_memcache.c,
  modules/ssl/ssl_scache_dc.c, modules/ssl/ssl_scache_dbm.c: Remove
  files.

* modules/ssl/mod_ssl.c (modssl_register_scache): Remove function.

* modules/ssl/ssl_private.h: Remove modssl_sesscache_provider etc.
  (SSLModConfigRec): Switch to using socache types.

* modules/ssl/ssl_engine_config.c (ssl_cmd_SSLSessionCache): Switch to
  use socache provider.

* modules/ssl/ssl_engine_mutex.c, modules/ssl/ssl_scache.c: Switch to
  using socache constants.

* modules/ssl/config.m4: Drop distache/memcache configuration, remove
  old objects.


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  Adjust the provider interface to use this instance type throughout.

* modules/cache/mod_socache_dbm.c,
  modules/cache/mod_socache_memcache.c,
  modules/cache/mod_socache_shmcb.c,
  modules/cache/mod_socache_dc.c: Adjust all implementations to 
  define the instance object in place of the "struct context", and
  to take this object directly in the provider interface.


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  Changes to mod_session.c only fix line endings again. No functional
  changes.


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Abstract out the mod_ssl session caching interface into a separate set
of modules, mod_socache_*.

* modules/cache/ap_socache.h: New file.

* modules/cache/config.m4: Copy CHECK_DISTCACHE from ../ssl/config.m4; 
  add new socache modules.

* modules/cache/mod_socache_dbm.c: Copied from ../ssl/ssl_scache_dbm.c.
  s/ssl_scache_/socache_/; add module structure and register_hooks.

* modules/cache/mod_socache_shmcb.c: Copied from ../ssl/ssl_scache_shmcb.c.
  s/ssl_scache_/socache_/; add module structure and register_hooks.
  Add SHMCB_MAX_SIZE definition, replacing APR_SHM_MAXSIZE.

* modules/cache/mod_socache_memcache.c: Copied from
  ../ssl/ssl_scache_memcache.c.
  s/ssl_scache_/socache_/; add module structure and register_hooks.
  Enable for APR-Util 1.3.x at compile-time, omitting configure-time
  checks.

* modules/cache/mod_socache_dc.c: Copied from ../ssl/ssl_scache_dc.c.
  s/ssl_scache_/socache_/; add module structure and register_hooks.


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  we are a reverse proxy request shutdown the connection WITHOUT ANY response
  to trigger a retry by the client if allowed (as for idempotent requests).
  BUT currently we should not do this if the request is the first request on
  a keepalive connection as browsers like seamonkey only display an empty page
  in this case and do not do a retry.

Related to PR 37770



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Reviewed by: Orhan Berent <berent belgeler.org>



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left for debugging purposes.


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* modules/ssl/ssl_engine_io.c (ssl_filter_io_shutdown): Remove
  redundant return value (which was always success).
  (ssl_io_filter_handshake): Return APR_ECONNABORTED on handshake
  failure, rather than success.
  (ssl_io_filter_output): Ignore ssl_filter_io_shutdown return
  value.


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* modules/ssl/ssl_engine_io.c: Define new error codes in the APR status
  code range, MODSSL_ERROR_BAD_GATEWAY and MODSSL_ERROR_HTTP_ON_HTTPS;
  use these HTTP_* constants directly as apr_status_t values.
  (ssl_io_filter_error): Use new constants.
  (ssl_io_filter_handshake): Return purely an APR status value rather
  than a mixture of HTTP_* constants, OpenSSL error codes, and APR
  status values.


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gcc -Wall.


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