Add a feature to the HostResolverRules to be able to match rules only...

net/base/host_mapping_rules.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/base/host_mapping_rules.h"
 
 #include "base/logging.h"
 #include "base/string_tokenizer.h"
 #include "base/string_util.h"
 #include "net/base/host_port_pair.h"
@@ skipping 10 matching lines @@
     const ExclusionRule& rule = *it;
     if (MatchPatternASCII(host_port->host(), rule.hostname_pattern))
       return false;
   }
 
   // Check if the hostname was remapped.
   for (MapRuleList::const_iterator it = map_rules_.begin();
        it != map_rules_.end(); ++it) {
     const MapRule& rule = *it;
 
-    if (!MatchPatternASCII(host_port->host(), rule.hostname_pattern))
-      continue;  // This rule doesn't apply.
+    // The rule's hostname_pattern will be something like:
+    //     www.foo.com
+    //     *.foo.com
+    //     www.foo.com:1234
+    //     *.foo.com:1234
+    // First, we'll check for a match just on hostname.
+    // If that fails, we'll check for a match with both hostname and port.
+    if (!MatchPatternASCII(host_port->host(), rule.hostname_pattern)) {
+      std::string host_port_string = host_port->ToString();
+      if (!MatchPatternASCII(host_port_string, rule.hostname_pattern))
+        continue;  // This rule doesn't apply.
+    }
 
     host_port->set_host(rule.replacement_hostname);
     if (rule.replacement_port != -1)
       host_port->set_port(rule.replacement_port);
     return true;
   }
 
   return false;
 }
 
@@ skipping 33 matching lines @@
   map_rules_.clear();
 
   StringTokenizer rules(rules_string, ",");
   while (rules.GetNext()) {
     bool ok = AddRuleFromString(rules.token());
     LOG_IF(ERROR, !ok) << "Failed parsing rule: " << rules.token();
   }
 }
 
 }  // namespace net