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Backporting documentation commits from trunk (new mod_ssl note about ECC): r1734058,r1734060,r1734067,r1734069

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Note that Timeout on a new connection can be "hidden" by an
AcceptFilter.




Timeout scenarios are more of an unordered list.




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mixmatched sections reported in comments




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mod_ssl: when SSLVerify is disabled (NONE), don't force a renegotiation if
the SSLVerifyDepth applied with the default/handshaken vhost differs from
the one applicable with the finally selected vhost.

Submitted by: ylavic
Reviewed/backported by: jim


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Fix crash in ap_mpm_pod_check call caused by NULL dereference of its parameter
when starting httpd as single process (httpd -X).


Revert changes on mpm_event and mpm_worker from r1711479.
The POD is not used in one process mode for those MPMs.

Follow up to r1711479 and r1733064: CHANGES entry.
Submitted by: jkaluza, ylavic, ylavic
Reviewed/backported by: jim


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mod_proxy: Play/restore the TLS-SNI on new backend connections which
had to be issued because the remote closed the previous/reusable one
during idle (keep-alive) time.


mod_proxy: follow up to r1729826: really copy conn->ssl_hostname.

mod_proxy: follow up to r1729826 + r1729847.
Adjust stacked ssl_hostname maximum size.

mod_proxy: follow up to r1729826 + r1729847 + r1732986.
Don't use magic constants.
Submitted by: ylavic
Reviewed/backported by: jim


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event: slave connection init, vhost early config
Submitted by: icing
Reviewed/backported by: jim


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but the first fix is bad.


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             backported in r1729495 but without this "server/core.c" change)



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mod_proxy: add missing APLOGNO()s.
Submitted by: ylavic
Reviewed/backported by: jim


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hostname: Test and log useragent_host per-request across various modules,
including the scoreboard, expression and rewrite engines, setenvif,
authz_host, access_compat, custom logging, ssl and REMOTE_HOST variables.
PR55348  [William Rowe]

This is the complete change set which applies cleanly to 2.4.x as well,
the server/scoreboard.c will follow, which does not apply due to drift.



A rather ugly patch since the code was refactored recently to exclude
the simple patch for 2.4.x, illustrated below.

Completes the changeset r1729930 and resolves all 2.4.19-dev corrections,
but other 2.5.0-dev specific changes may still be needed on trunk.

--- server/scoreboard.c	(revision 1729907)
+++ server/scoreboard.c	(working copy)
@@ -491,9 +491,8 @@
             ws->conn_bytes = 0;
         }
         if (r) {
-            const char *client = ap_get_remote_host(c, r->per_dir_config,
-                                 REMOTE_NOLOOKUP, NULL);
-            if (!client || !strcmp(client, c->client_ip)) {
+            const char *client;
+            if (!(client = ap_get_useragent_host(r, REMOTE_NOLOOKUP, NULL))) {
                 apr_cpystrn(ws->client, r->useragent_ip, sizeof(ws->client));
             }
             else {


Submitted by: wrowe
Reviewed/backported by: jim


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Introduce an ap_get_useragent_host() accessor to replace the old
ap_get_remote_host() in most applications, but preserve the original
behavior for all ap_get_remote_host() consumers (mostly, because we
don't have the request_rec in the first place, and also to avoid any
unintended consequences).

This accessor continues to store the remote_host of connection based
uesr agents within the conn_rec for optimization.  Only where some
other module modifies the useragent_addr will we perform a per-request
query of the remote_host.

(Fixed compilation issues noted by Ranier, applies to 2.4.x trunk,
modulo CHANGES and ap_mmn.h)


Submitted by: wrowe
Reviewed/backported by: jim


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