http_network_layer.h revision ddb351dbec246cf1fab5ec20d2d5520909041de1 
1// Copyright (c) 2011 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#pragma once
8
9#include <string>
10
11#include "base/memory/ref_counted.h"
12#include "base/memory/scoped_ptr.h"
13#include "base/threading/non_thread_safe.h"
14#include "net/http/http_transaction_factory.h"
15
16namespace net {
17
18class CertVerifier;
19class ClientSocketFactory;
20class DnsCertProvenanceChecker;
21class DnsRRResolver;
22class HostResolver;
23class HttpAuthHandlerFactory;
24class HttpNetworkSession;
25class NetLog;
26class NetworkDelegate;
27class ProxyService;
28class SpdySessionPool;
29class SSLConfigService;
30class SSLHostInfoFactory;
31
32class HttpNetworkLayer : public HttpTransactionFactory,
33                         public base::NonThreadSafe {
34 public:
35  // Construct a HttpNetworkLayer with an existing HttpNetworkSession which
36  // contains a valid ProxyService.
37  explicit HttpNetworkLayer(HttpNetworkSession* session);
38  virtual ~HttpNetworkLayer();
39
40  // Create a transaction factory that instantiate a network layer over an
41  // existing network session. Network session contains some valuable
42  // information (e.g. authentication data) that we want to share across
43  // multiple network layers. This method exposes the implementation details
44  // of a network layer, use this method with an existing network layer only
45  // when network session is shared.
46  static HttpTransactionFactory* CreateFactory(HttpNetworkSession* session);
47
48  // Enable the spdy protocol.
49  // Without calling this function, SPDY is disabled.  The mode can be:
50  //   ""            : (default) SSL and compression are enabled, flow
51  //                   control disabled.
52  //   "no-ssl"      : disables SSL.
53  //   "no-compress" : disables compression.
54  //   "flow-control": enables flow control.
55  //   "none"        : disables both SSL and compression.
56  static void EnableSpdy(const std::string& mode);
57
58  // HttpTransactionFactory methods:
59  virtual int CreateTransaction(scoped_ptr<HttpTransaction>* trans);
60  virtual HttpCache* GetCache();
61  virtual HttpNetworkSession* GetSession();
62  virtual void Suspend(bool suspend);
63
64 private:
65  const scoped_refptr<HttpNetworkSession> session_;
66  bool suspended_;
67};
68
69}  // namespace net
70
71#endif  // NET_HTTP_HTTP_NETWORK_LAYER_H_
72