1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef NET_HTTP_HTTP_NETWORK_LAYER_H_ 6 #define NET_HTTP_HTTP_NETWORK_LAYER_H_ 7 8 #include <string> 9 10 #include "base/basictypes.h" 11 #include "base/compiler_specific.h" 12 #include "base/memory/ref_counted.h" 13 #include "base/memory/scoped_ptr.h" 14 #include "base/power_monitor/power_observer.h" 15 #include "base/threading/non_thread_safe.h" 16 #include "net/base/net_export.h" 17 #include "net/http/http_transaction_factory.h" 18 19 namespace net { 20 21 class HttpNetworkSession; 22 23 class NET_EXPORT HttpNetworkLayer 24 : public HttpTransactionFactory, 25 public base::PowerObserver, 26 NON_EXPORTED_BASE(public base::NonThreadSafe) { 27 public: 28 // Construct a HttpNetworkLayer with an existing HttpNetworkSession which 29 // contains a valid ProxyService. 30 explicit HttpNetworkLayer(HttpNetworkSession* session); 31 virtual ~HttpNetworkLayer(); 32 33 // Create a transaction factory that instantiate a network layer over an 34 // existing network session. Network session contains some valuable 35 // information (e.g. authentication data) that we want to share across 36 // multiple network layers. This method exposes the implementation details 37 // of a network layer, use this method with an existing network layer only 38 // when network session is shared. 39 static HttpTransactionFactory* CreateFactory(HttpNetworkSession* session); 40 41 // Forces an alternate protocol of SPDY/3 on port 443. 42 // TODO(rch): eliminate this method. 43 static void ForceAlternateProtocol(); 44 45 // HttpTransactionFactory methods: 46 virtual int CreateTransaction(RequestPriority priority, 47 scoped_ptr<HttpTransaction>* trans) OVERRIDE; 48 virtual HttpCache* GetCache() OVERRIDE; 49 virtual HttpNetworkSession* GetSession() OVERRIDE; 50 51 // base::PowerObserver methods: 52 virtual void OnSuspend() OVERRIDE; 53 virtual void OnResume() OVERRIDE; 54 55 private: 56 const scoped_refptr<HttpNetworkSession> session_; 57 bool suspended_; 58 59 DISALLOW_COPY_AND_ASSIGN(HttpNetworkLayer); 60 }; 61 62 } // namespace net 63 64 #endif // NET_HTTP_HTTP_NETWORK_LAYER_H_ 65