net/http/http_proxy_client_socket.h

   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_PROXY_CLIENT_SOCKET_H_
   6 #define NET_HTTP_HTTP_PROXY_CLIENT_SOCKET_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "net/base/completion_callback.h"
  13 #include "net/base/host_port_pair.h"
  14 #include "net/base/load_timing_info.h"
  15 #include "net/http/http_auth_controller.h"
  16 #include "net/http/http_request_headers.h"
  17 #include "net/http/http_request_info.h"
  18 #include "net/http/http_response_info.h"
  19 #include "net/http/proxy_client_socket.h"
  20 #include "net/log/net_log.h"
  21 #include "net/socket/ssl_client_socket.h"
  22
  23 namespace net {
  24
  25 class AddressList;
  26 class ClientSocketHandle;
  27 class GrowableIOBuffer;
  28 class HttpAuthCache;
  29 class HttpStream;
  30 class HttpStreamParser;
  31 class IOBuffer;
  32 class ProxyDelegate;
  33
  34 class HttpProxyClientSocket : public ProxyClientSocket {
  35  public:
  36   // Takes ownership of |transport_socket|, which should already be connected
  37   // by the time Connect() is called.  If tunnel is true then on Connect()
  38   // this socket will establish an Http tunnel.
  39   HttpProxyClientSocket(ClientSocketHandle* transport_socket,
  40                         const std::string& user_agent,
  41                         const HostPortPair& endpoint,
  42                         const HostPortPair& proxy_server,
  43                         HttpAuthCache* http_auth_cache,
  44                         HttpAuthHandlerFactory* http_auth_handler_factory,
  45                         bool tunnel,
  46                         bool using_spdy,
  47                         NextProto protocol_negotiated,
  48                         ProxyDelegate* proxy_delegate,
  49                         bool is_https_proxy);
  50
  51   // On destruction Disconnect() is called.
  52   ~HttpProxyClientSocket() override;
  53
  54   // ProxyClientSocket implementation.
  55   const HttpResponseInfo* GetConnectResponseInfo() const override;
  56   HttpStream* CreateConnectResponseStream() override;
  57   int RestartWithAuth(const CompletionCallback& callback) override;
  58   const scoped_refptr<HttpAuthController>& GetAuthController() const override;
  59   bool IsUsingSpdy() const override;
  60   NextProto GetProtocolNegotiated() const override;
  61
  62   // StreamSocket implementation.
  63   int Connect(const CompletionCallback& callback) override;
  64   void Disconnect() override;
  65   bool IsConnected() const override;
  66   bool IsConnectedAndIdle() const override;
  67   const BoundNetLog& NetLog() const override;
  68   void SetSubresourceSpeculation() override;
  69   void SetOmniboxSpeculation() override;
  70   bool WasEverUsed() const override;
  71   bool UsingTCPFastOpen() const override;
  72   bool WasNpnNegotiated() const override;
  73   NextProto GetNegotiatedProtocol() const override;
  74   bool GetSSLInfo(SSLInfo* ssl_info) override;
  75
  76   // Socket implementation.
  77   int Read(IOBuffer* buf,
  78            int buf_len,
  79            const CompletionCallback& callback) override;
  80   int Write(IOBuffer* buf,
  81             int buf_len,
  82             const CompletionCallback& callback) override;
  83   int SetReceiveBufferSize(int32 size) override;
  84   int SetSendBufferSize(int32 size) override;
  85   int GetPeerAddress(IPEndPoint* address) const override;
  86   int GetLocalAddress(IPEndPoint* address) const override;
  87
  88  private:
  89   enum State {
  90     STATE_NONE,
  91     STATE_GENERATE_AUTH_TOKEN,
  92     STATE_GENERATE_AUTH_TOKEN_COMPLETE,
  93     STATE_SEND_REQUEST,
  94     STATE_SEND_REQUEST_COMPLETE,
  95     STATE_READ_HEADERS,
  96     STATE_READ_HEADERS_COMPLETE,
  97     STATE_DRAIN_BODY,
  98     STATE_DRAIN_BODY_COMPLETE,
  99     STATE_TCP_RESTART,
 100     STATE_TCP_RESTART_COMPLETE,
 101     STATE_DONE,
 102   };
 103
 104   // The size in bytes of the buffer we use to drain the response body that
 105   // we want to throw away.  The response body is typically a small error
 106   // page just a few hundred bytes long.
 107   static const int kDrainBodyBufferSize = 1024;
 108
 109   int PrepareForAuthRestart();
 110   int DidDrainBodyForAuthRestart(bool keep_alive);
 111
 112   void LogBlockedTunnelResponse() const;
 113
 114   void DoCallback(int result);
 115   void OnIOComplete(int result);
 116
 117   int DoLoop(int last_io_result);
 118   int DoGenerateAuthToken();
 119   int DoGenerateAuthTokenComplete(int result);
 120   int DoSendRequest();
 121   int DoSendRequestComplete(int result);
 122   int DoReadHeaders();
 123   int DoReadHeadersComplete(int result);
 124   int DoDrainBody();
 125   int DoDrainBodyComplete(int result);
 126   int DoTCPRestart();
 127   int DoTCPRestartComplete(int result);
 128
 129   CompletionCallback io_callback_;
 130   State next_state_;
 131
 132   // Stores the callback to the layer above, called on completing Connect().
 133   CompletionCallback user_callback_;
 134
 135   HttpRequestInfo request_;
 136   HttpResponseInfo response_;
 137
 138   scoped_refptr<GrowableIOBuffer> parser_buf_;
 139   scoped_ptr<HttpStreamParser> http_stream_parser_;
 140   scoped_refptr<IOBuffer> drain_buf_;
 141
 142   // Stores the underlying socket.
 143   scoped_ptr<ClientSocketHandle> transport_;
 144
 145   // The hostname and port of the endpoint.  This is not necessarily the one
 146   // specified by the URL, due to Alternate-Protocol or fixed testing ports.
 147   const HostPortPair endpoint_;
 148   scoped_refptr<HttpAuthController> auth_;
 149   const bool tunnel_;
 150   // If true, then the connection to the proxy is a SPDY connection.
 151   const bool using_spdy_;
 152   // Protocol negotiated with the server.
 153   NextProto protocol_negotiated_;
 154   // If true, then SSL is used to communicate with this proxy
 155   const bool is_https_proxy_;
 156
 157   std::string request_line_;
 158   HttpRequestHeaders request_headers_;
 159
 160   // Used only for redirects.
 161   bool redirect_has_load_timing_info_;
 162   LoadTimingInfo redirect_load_timing_info_;
 163
 164   const HostPortPair proxy_server_;
 165
 166   // This delegate must outlive this proxy client socket.
 167   ProxyDelegate* proxy_delegate_;
 168
 169   const BoundNetLog net_log_;
 170
 171   DISALLOW_COPY_AND_ASSIGN(HttpProxyClientSocket);
 172 };
 173
 174 }  // namespace net
 175
 176 #endif  // NET_HTTP_HTTP_PROXY_CLIENT_SOCKET_H_