Record errors that trigger a data reduction proxy bypass

net/http/http_network_transaction.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_network_transaction.h"
 
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 991 matching lines @@
     }
 #endif
 
     if (data_reduction_proxy_used || data_reduction_fallback_proxy_used) {
       net::HttpResponseHeaders::DataReductionProxyInfo
       data_reduction_proxy_info;
       proxy_bypass_event
           = response_.headers->GetDataReductionProxyBypassEventType(
               &data_reduction_proxy_info);
       if (proxy_bypass_event < ProxyService::BYPASS_EVENT_TYPE_MAX) {
+        // Bypass all proxies for one second on reception of a 4xx that
+        // originated at the proxy.
+        if (proxy_bypass_event == ProxyService::PROXY_4XX_BYPASS) {
+          data_reduction_proxy_info.bypass_all = true;
+          data_reduction_proxy_info.bypass_duration =
+              base::TimeDelta::FromSeconds(1);
+        }
+
         ProxyService* proxy_service = session_->proxy_service();
 
         proxy_service->RecordDataReductionProxyBypassInfo(
             data_reduction_proxy_used, proxy_info_.proxy_server(),
             proxy_bypass_event);
 
         ProxyServer proxy_server;
 #if defined(DATA_REDUCTION_FALLBACK_HOST)
         if (data_reduction_proxy_used && data_reduction_proxy_info.bypass_all) {
           // TODO(bengr): Rename as DATA_REDUCTION_FALLBACK_ORIGIN.
@@ skipping 577 matching lines @@
       description = base::StringPrintf("Unknown state 0x%08X (%u)", state,
                                        state);
       break;
   }
   return description;
 }
 
 #undef STATE_CASE
 
 }  // namespace net