QUIC - disable QUIC if packet loss rate is bad for a connection.

net/http/http_stream_factory_impl.cc

 // 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_impl.h"
 
 #include <string>
 
 #include "base/logging.h"
 #include "base/stl_util.h"
@@ skipping 214 matching lines @@
 
     if (session_->HasSpdyExclusion(origin))
       return kNoAlternativeService;
 
     *alternate_url = UpgradeUrlToHttps(original_url, alternative_service.port);
   } else {
     DCHECK_EQ(QUIC, alternative_service.protocol);
     if (!session_->params().enable_quic)
       return kNoAlternativeService;
 
+    if (session_->quic_stream_factory()->IsQuicDisabled(origin.port()))
+      return kNoAlternativeService;
+
     // TODO(rch):  Figure out how to make QUIC iteract with PAC
     // scripts.  By not re-writing the URL, we will query the PAC script
     // for the proxy to use to reach the original URL via TCP.  But
     // the alternate request will be going via UDP to a different port.
     *alternate_url = original_url;
   }
   return alternative_service;
 }
 
 void HttpStreamFactoryImpl::OrphanJob(Job* job, const Request* request) {
@@ skipping 55 matching lines @@
   delete job;
 }
 
 void HttpStreamFactoryImpl::OnPreconnectsComplete(const Job* job) {
   preconnect_job_set_.erase(job);
   delete job;
   OnPreconnectsCompleteInternal();
 }
 
 }  // namespace net