Retry HttpNetworkTransactions upon receipt of ERR_NETWORK_CHANGED during host resolution and …

net/http/http_network_transaction.h

 // 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.
 
 #ifndef NET_HTTP_HTTP_NETWORK_TRANSACTION_H_
 #define NET_HTTP_HTTP_NETWORK_TRANSACTION_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "net/base/net_log.h"
 #include "net/base/request_priority.h"
 #include "net/http/http_auth.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_info.h"
 #include "net/http/http_stream_factory.h"
 #include "net/http/http_transaction.h"
 #include "net/proxy/proxy_service.h"
 #include "net/ssl/ssl_config_service.h"
@@ skipping 308 matching lines @@
   // read from the socket until the tunnel is done.
   bool establishing_tunnel_;
 
   // The helper object to use to create WebSocketHandshakeStreamBase
   // objects. Only relevant when establishing a WebSocket connection.
   WebSocketHandshakeStreamBase::CreateHelper*
       websocket_handshake_stream_base_create_helper_;
 
   BeforeNetworkStartCallback before_network_start_callback_;
 
+  // How many times have we automatically retried this request after failing
+  // with ERR_NETWORK_CHANGED. Retrying is only attempted when
+  // ERR_NETWORK_CHANGED is received during host resolution or connecting
+  // (i.e. before the request has been issued). This ensures request
+  // side-effects are never duplicated.
+  int num_automatic_retries_on_network_changes_;
+
+  base::WeakPtrFactory<HttpNetworkTransaction> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(HttpNetworkTransaction);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_NETWORK_TRANSACTION_H_