------------------------------------------------------------
revno: 11685
revision-id: squid3@treenet.co.nz-20121017004357-ud39bd5w7i7gwyfv
parent: squid3@treenet.co.nz-20121017003925-pqrs38f5ldmksy22
committer: Amos Jeffries <squid3@treenet.co.nz>
branch nick: 3.2
timestamp: Tue 2012-10-16 18:43:57 -0600
message:
  HTTP/1.1: honour Cache-Control before Pragma:no-cache
  
  HTTPbis WG clarifications on the interaction between Cache-Control and
  Pragma specify that Cache-Control may be explicitly crafted to allow
  conditional caching by HTTP/1.1 caches and Pragma:no-cache supplied to
  prevent caching by older HTTP/1.0 caches unable to understand the
  Cache-Control properly.
  
  Squid does obey Cache-Control. So we can deprecate Pragma to the side
  cases when Cache-Control is absent entirely.
------------------------------------------------------------
# Bazaar merge directive format 2 (Bazaar 0.90)
# revision_id: squid3@treenet.co.nz-20121017004357-ud39bd5w7i7gwyfv
# target_branch: http://bzr.squid-cache.org/bzr/squid3/branches\
#   /SQUID_3_2
# testament_sha1: 936f66c40171e3de62300781f2a41b6f1878626e
# timestamp: 2012-10-17 00:44:26 +0000
# source_branch: http://bzr.squid-cache.org/bzr/squid3/branches\
#   /SQUID_3_2
# base_revision_id: squid3@treenet.co.nz-20121017003925-\
#   pqrs38f5ldmksy22
# 
# Begin patch
=== modified file 'src/client_side_request.cc'
--- src/client_side_request.cc	2012-08-02 03:32:26 +0000
+++ src/client_side_request.cc	2012-10-17 00:43:57 +0000
@@ -1030,19 +1030,14 @@
         request->flags.ims = 1;
 
     if (!request->flags.ignore_cc) {
-        if (req_hdr->has(HDR_PRAGMA)) {
-            String s = req_hdr->getList(HDR_PRAGMA);
-
-            if (strListIsMember(&s, "no-cache", ','))
-                no_cache=true;
-
-            s.clean();
-        }
-
-        if (request->cache_control)
+        if (request->cache_control) {
             if (request->cache_control->noCache())
                 no_cache=true;
 
+        // RFC 2616: treat Pragma:no-cache as if it was Cache-Control:no-cache when Cache-Control is missing
+        } else if (req_hdr->has(HDR_PRAGMA))
+            no_cache = req_hdr->hasListMember(HDR_PRAGMA,"no-cache",',');
+
         /*
         * Work around for supporting the Reload button in IE browsers when Squid
         * is used as an accelerator or transparent proxy, by turning accelerated