SPDY - trun off spdy/2.1 by default. It could be enabled

net/http/http_stream_factory.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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/http/http_stream_factory.h"
 
 #include "base/logging.h"
 #include "base/string_number_conversions.h"
 #include "base/string_split.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/host_mapping_rules.h"
@@ skipping 63 matching lines @@
   if (!base::StringToInt(port_protocol_vector[0], &port) ||
       port <= 0 || port >= 1 << 16) {
     DLOG(WARNING) << kAlternateProtocolHeader
                   << " header has unrecognizable port: "
                   << port_protocol_vector[0];
     return;
   }
 
   AlternateProtocol protocol = ALTERNATE_PROTOCOL_BROKEN;
   // We skip NPN_SPDY_1 here, because we've rolled the protocol version to 2.
-  for (int i = NPN_SPDY_2; i < NUM_ALTERNATE_PROTOCOLS; ++i) {
+  // TODO(rtenneti): add support for SPDY/2.1 (use next_protos_ to determine the
+  // protocol).
+  for (int i = NPN_SPDY_2; i <= NPN_SPDY_2; ++i) {
     if (port_protocol_vector[1] == kAlternateProtocolStrings[i])
       protocol = static_cast<AlternateProtocol>(i);
   }
 
   if (protocol == ALTERNATE_PROTOCOL_BROKEN) {
     // Currently, we only recognize the npn-spdy protocol.
     DLOG(WARNING) << kAlternateProtocolHeader
                   << " header has unrecognized protocol: "
                   << port_protocol_vector[1];
     return;
@@ skipping 59 matching lines @@
 HttpStreamFactory::HttpStreamFactory() {}
 
 // static
 const HostMappingRules& HttpStreamFactory::host_mapping_rules() {
   if (!host_mapping_rules_)
     host_mapping_rules_ = new HostMappingRules;
   return *host_mapping_rules_;
 }
 
 }  // namespace net