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// 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_LAYER_H_
#define NET_HTTP_HTTP_NETWORK_LAYER_H_
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/power_monitor/power_observer.h"
#include "base/threading/non_thread_safe.h"
#include "net/base/net_export.h"
#include "net/http/http_transaction_factory.h"
namespace net {
class HttpNetworkSession;
class NET_EXPORT HttpNetworkLayer
: public HttpTransactionFactory,
public base::PowerObserver,
NON_EXPORTED_BASE(public base::NonThreadSafe) {
public:
// Construct a HttpNetworkLayer with an existing HttpNetworkSession which
// contains a valid ProxyService.
explicit HttpNetworkLayer(HttpNetworkSession* session);
virtual ~HttpNetworkLayer();
// Create a transaction factory that instantiate a network layer over an
// existing network session. Network session contains some valuable
// information (e.g. authentication data) that we want to share across
// multiple network layers. This method exposes the implementation details
// of a network layer, use this method with an existing network layer only
// when network session is shared.
static HttpTransactionFactory* CreateFactory(HttpNetworkSession* session);
// Forces an alternate protocol of SPDY/3 on port 443.
// TODO(rch): eliminate this method.
static void ForceAlternateProtocol();
// HttpTransactionFactory methods:
virtual int CreateTransaction(RequestPriority priority,
scoped_ptr<HttpTransaction>* trans,
HttpTransactionDelegate* delegate) OVERRIDE;
virtual HttpCache* GetCache() OVERRIDE;
virtual HttpNetworkSession* GetSession() OVERRIDE;
// base::PowerObserver methods:
virtual void OnSuspend() OVERRIDE;
virtual void OnResume() OVERRIDE;
private:
const scoped_refptr<HttpNetworkSession> session_;
bool suspended_;
DISALLOW_COPY_AND_ASSIGN(HttpNetworkLayer);
};
} // namespace net
#endif // NET_HTTP_HTTP_NETWORK_LAYER_H_
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