From 63d78448caf501c837fcddd924e347b809f65250 Mon Sep 17 00:00:00 2001
From: Eric Covener <covener@apache.org>
Date: Sat, 1 Nov 2014 17:57:47 +0000
Subject: [PATCH] Merge r1634237 from trunk:

fix another case of 304 response sent to an unconditional request

Submitted By: covener
Reviewed By:  covener, jim, ylavic




git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1636001 13f79535-47bb-0310-9956-ffa450edef68
---
 CHANGES                   | 3 +++
 STATUS                    | 6 ------
 modules/cache/mod_cache.c | 5 +++++
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/CHANGES b/CHANGES
index 85cd4d5bee2..4110e57ed5a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2,6 +2,9 @@
 
 Changes with Apache 2.4.11
 
+  *) mod_cache: Avoid a 304 response to an unconditional requst when an AH00752
+     CacheLock error occurs during cache revalidation. [Eric Covener]
+ 
   *) mod_ssl: Move OCSP stapling information from a per-certificate store to
      a per-server hash. PR 54357, PR 56919. [Alex Bligh <alex alex.org.uk>,
      Yann Ylavic, Kaspar Brand]
diff --git a/STATUS b/STATUS
index bbdfed6b689..9368864c017 100644
--- a/STATUS
+++ b/STATUS
@@ -102,12 +102,6 @@ RELEASE SHOWSTOPPERS:
 PATCHES ACCEPTED TO BACKPORT FROM TRUNK:
   [ start all new proposals below, under PATCHES PROPOSED. ]
 
-   * mod_cache: Restore original request headers when skipping updating the cache due to
-     a busy/broken CacheLock.  Can result in a 304 to an uncoditional request.
-     trunk patch: http://svn.apache.org/r1634237
-     2.4.x patch: trunk works
-     +1 covener, jim, ylavic
-
    * mod_proxy_connect: EBCDIC fix for ProxyRemote to HTTPS. PR57092
      trunk patch: http://svn.apache.org/r1634425
      2.4.x patch: trunk works
diff --git a/modules/cache/mod_cache.c b/modules/cache/mod_cache.c
index 1a47f021b85..0c3b5f97027 100644
--- a/modules/cache/mod_cache.c
+++ b/modules/cache/mod_cache.c
@@ -234,6 +234,11 @@ static int cache_quick_handler(request_rec *r, int lookup)
                     ap_log_rerror(APLOG_MARK, APLOG_DEBUG, rv,
                             r, APLOGNO(00752) "Cache locked for url, not caching "
                             "response: %s", r->uri);
+                    /* cache_select() may have added conditional headers */
+                    if (cache->stale_headers) {
+                        r->headers_in = cache->stale_headers;
+                    }
+
                 }
             }
             else {
-- 
2.47.2