net/http/http_proxy_client_socket_pool.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_POOL_H_
   6 #define NET_HTTP_HTTP_PROXY_CLIENT_SOCKET_POOL_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/memory/weak_ptr.h"
  14 #include "base/time/time.h"
  15 #include "net/base/host_port_pair.h"
  16 #include "net/base/net_export.h"
  17 #include "net/http/http_auth.h"
  18 #include "net/http/http_response_info.h"
  19 #include "net/http/proxy_client_socket.h"
  20 #include "net/socket/client_socket_pool.h"
  21 #include "net/socket/client_socket_pool_base.h"
  22 #include "net/socket/client_socket_pool_histograms.h"
  23 #include "net/socket/ssl_client_socket.h"
  24 #include "net/spdy/spdy_session.h"
  25
  26 namespace net {
  27
  28 class HostResolver;
  29 class HttpAuthCache;
  30 class HttpAuthHandlerFactory;
  31 class SSLClientSocketPool;
  32 class SSLSocketParams;
  33 class SpdySessionPool;
  34 class SpdyStream;
  35 class TransportClientSocketPool;
  36 class TransportSocketParams;
  37
  38 // HttpProxySocketParams only needs the socket params for one of the proxy
  39 // types.  The other param must be NULL.  When using an HTTP Proxy,
  40 // |transport_params| must be set.  When using an HTTPS Proxy, |ssl_params|
  41 // must be set.
  42 class NET_EXPORT_PRIVATE HttpProxySocketParams
  43     : public base::RefCounted<HttpProxySocketParams> {
  44  public:
  45   HttpProxySocketParams(
  46       const scoped_refptr<TransportSocketParams>& transport_params,
  47       const scoped_refptr<SSLSocketParams>& ssl_params,
  48       const GURL& request_url,
  49       const std::string& user_agent,
  50       const HostPortPair& endpoint,
  51       HttpAuthCache* http_auth_cache,
  52       HttpAuthHandlerFactory* http_auth_handler_factory,
  53       SpdySessionPool* spdy_session_pool,
  54       bool tunnel);
  55
  56   const scoped_refptr<TransportSocketParams>& transport_params() const {
  57     return transport_params_;
  58   }
  59   const scoped_refptr<SSLSocketParams>& ssl_params() const {
  60     return ssl_params_;
  61   }
  62   const GURL& request_url() const { return request_url_; }
  63   const std::string& user_agent() const { return user_agent_; }
  64   const HostPortPair& endpoint() const { return endpoint_; }
  65   HttpAuthCache* http_auth_cache() const { return http_auth_cache_; }
  66   HttpAuthHandlerFactory* http_auth_handler_factory() const {
  67     return http_auth_handler_factory_;
  68   }
  69   SpdySessionPool* spdy_session_pool() {
  70     return spdy_session_pool_;
  71   }
  72   const HostResolver::RequestInfo& destination() const;
  73   bool tunnel() const { return tunnel_; }
  74   bool ignore_limits() const { return ignore_limits_; }
  75
  76  private:
  77   friend class base::RefCounted<HttpProxySocketParams>;
  78   ~HttpProxySocketParams();
  79
  80   const scoped_refptr<TransportSocketParams> transport_params_;
  81   const scoped_refptr<SSLSocketParams> ssl_params_;
  82   SpdySessionPool* spdy_session_pool_;
  83   const GURL request_url_;
  84   const std::string user_agent_;
  85   const HostPortPair endpoint_;
  86   HttpAuthCache* const http_auth_cache_;
  87   HttpAuthHandlerFactory* const http_auth_handler_factory_;
  88   const bool tunnel_;
  89   bool ignore_limits_;
  90
  91   DISALLOW_COPY_AND_ASSIGN(HttpProxySocketParams);
  92 };
  93
  94 // HttpProxyConnectJob optionally establishes a tunnel through the proxy
  95 // server after connecting the underlying transport socket.
  96 class HttpProxyConnectJob : public ConnectJob {
  97  public:
  98   HttpProxyConnectJob(const std::string& group_name,
  99                       RequestPriority priority,
 100                       const scoped_refptr<HttpProxySocketParams>& params,
 101                       const base::TimeDelta& timeout_duration,
 102                       TransportClientSocketPool* transport_pool,
 103                       SSLClientSocketPool* ssl_pool,
 104                       HostResolver* host_resolver,
 105                       Delegate* delegate,
 106                       NetLog* net_log);
 107   virtual ~HttpProxyConnectJob();
 108
 109   // ConnectJob methods.
 110   virtual LoadState GetLoadState() const OVERRIDE;
 111
 112   virtual void GetAdditionalErrorState(ClientSocketHandle* handle) OVERRIDE;
 113
 114  private:
 115   enum State {
 116     STATE_TCP_CONNECT,
 117     STATE_TCP_CONNECT_COMPLETE,
 118     STATE_SSL_CONNECT,
 119     STATE_SSL_CONNECT_COMPLETE,
 120     STATE_HTTP_PROXY_CONNECT,
 121     STATE_HTTP_PROXY_CONNECT_COMPLETE,
 122     STATE_SPDY_PROXY_CREATE_STREAM,
 123     STATE_SPDY_PROXY_CREATE_STREAM_COMPLETE,
 124     STATE_SPDY_PROXY_CONNECT_COMPLETE,
 125     STATE_NONE,
 126   };
 127
 128   void OnIOComplete(int result);
 129
 130   // Runs the state transition loop.
 131   int DoLoop(int result);
 132
 133   // Connecting to HTTP Proxy
 134   int DoTransportConnect();
 135   int DoTransportConnectComplete(int result);
 136   // Connecting to HTTPS Proxy
 137   int DoSSLConnect();
 138   int DoSSLConnectComplete(int result);
 139
 140   int DoHttpProxyConnect();
 141   int DoHttpProxyConnectComplete(int result);
 142
 143   int DoSpdyProxyCreateStream();
 144   int DoSpdyProxyCreateStreamComplete(int result);
 145
 146   // Begins the tcp connection and the optional Http proxy tunnel.  If the
 147   // request is not immediately servicable (likely), the request will return
 148   // ERR_IO_PENDING. An OK return from this function or the callback means
 149   // that the connection is established; ERR_PROXY_AUTH_REQUESTED means
 150   // that the tunnel needs authentication credentials, the socket will be
 151   // returned in this case, and must be release back to the pool; or
 152   // a standard net error code will be returned.
 153   virtual int ConnectInternal() OVERRIDE;
 154
 155   base::WeakPtrFactory<HttpProxyConnectJob> weak_ptr_factory_;
 156   scoped_refptr<HttpProxySocketParams> params_;
 157   TransportClientSocketPool* const transport_pool_;
 158   SSLClientSocketPool* const ssl_pool_;
 159   HostResolver* const resolver_;
 160
 161   State next_state_;
 162   CompletionCallback callback_;
 163   scoped_ptr<ClientSocketHandle> transport_socket_handle_;
 164   scoped_ptr<ProxyClientSocket> transport_socket_;
 165   bool using_spdy_;
 166   // Protocol negotiated with the server.
 167   NextProto protocol_negotiated_;
 168
 169   HttpResponseInfo error_response_info_;
 170
 171   SpdyStreamRequest spdy_stream_request_;
 172
 173   DISALLOW_COPY_AND_ASSIGN(HttpProxyConnectJob);
 174 };
 175
 176 class NET_EXPORT_PRIVATE HttpProxyClientSocketPool
 177     : public ClientSocketPool,
 178       public HigherLayeredPool {
 179  public:
 180   typedef HttpProxySocketParams SocketParams;
 181
 182   HttpProxyClientSocketPool(
 183       int max_sockets,
 184       int max_sockets_per_group,
 185       ClientSocketPoolHistograms* histograms,
 186       HostResolver* host_resolver,
 187       TransportClientSocketPool* transport_pool,
 188       SSLClientSocketPool* ssl_pool,
 189       NetLog* net_log);
 190
 191   virtual ~HttpProxyClientSocketPool();
 192
 193   // ClientSocketPool implementation.
 194   virtual int RequestSocket(const std::string& group_name,
 195                             const void* connect_params,
 196                             RequestPriority priority,
 197                             ClientSocketHandle* handle,
 198                             const CompletionCallback& callback,
 199                             const BoundNetLog& net_log) OVERRIDE;
 200
 201   virtual void RequestSockets(const std::string& group_name,
 202                               const void* params,
 203                               int num_sockets,
 204                               const BoundNetLog& net_log) OVERRIDE;
 205
 206   virtual void CancelRequest(const std::string& group_name,
 207                              ClientSocketHandle* handle) OVERRIDE;
 208
 209   virtual void ReleaseSocket(const std::string& group_name,
 210                              scoped_ptr<StreamSocket> socket,
 211                              int id) OVERRIDE;
 212
 213   virtual void FlushWithError(int error) OVERRIDE;
 214
 215   virtual void CloseIdleSockets() OVERRIDE;
 216
 217   virtual int IdleSocketCount() const OVERRIDE;
 218
 219   virtual int IdleSocketCountInGroup(
 220       const std::string& group_name) const OVERRIDE;
 221
 222   virtual LoadState GetLoadState(
 223       const std::string& group_name,
 224       const ClientSocketHandle* handle) const OVERRIDE;
 225
 226   virtual base::DictionaryValue* GetInfoAsValue(
 227       const std::string& name,
 228       const std::string& type,
 229       bool include_nested_pools) const OVERRIDE;
 230
 231   virtual base::TimeDelta ConnectionTimeout() const OVERRIDE;
 232
 233   virtual ClientSocketPoolHistograms* histograms() const OVERRIDE;
 234
 235   // LowerLayeredPool implementation.
 236   virtual bool IsStalled() const OVERRIDE;
 237
 238   virtual void AddHigherLayeredPool(HigherLayeredPool* higher_pool) OVERRIDE;
 239
 240   virtual void RemoveHigherLayeredPool(HigherLayeredPool* higher_pool) OVERRIDE;
 241
 242   // HigherLayeredPool implementation.
 243   virtual bool CloseOneIdleConnection() OVERRIDE;
 244
 245  private:
 246   typedef ClientSocketPoolBase<HttpProxySocketParams> PoolBase;
 247
 248   class HttpProxyConnectJobFactory : public PoolBase::ConnectJobFactory {
 249    public:
 250     HttpProxyConnectJobFactory(
 251         TransportClientSocketPool* transport_pool,
 252         SSLClientSocketPool* ssl_pool,
 253         HostResolver* host_resolver,
 254         NetLog* net_log);
 255
 256     // ClientSocketPoolBase::ConnectJobFactory methods.
 257     virtual scoped_ptr<ConnectJob> NewConnectJob(
 258         const std::string& group_name,
 259         const PoolBase::Request& request,
 260         ConnectJob::Delegate* delegate) const OVERRIDE;
 261
 262     virtual base::TimeDelta ConnectionTimeout() const OVERRIDE;
 263
 264    private:
 265     TransportClientSocketPool* const transport_pool_;
 266     SSLClientSocketPool* const ssl_pool_;
 267     HostResolver* const host_resolver_;
 268     NetLog* net_log_;
 269     base::TimeDelta timeout_;
 270
 271     DISALLOW_COPY_AND_ASSIGN(HttpProxyConnectJobFactory);
 272   };
 273
 274   TransportClientSocketPool* const transport_pool_;
 275   SSLClientSocketPool* const ssl_pool_;
 276   PoolBase base_;
 277
 278   DISALLOW_COPY_AND_ASSIGN(HttpProxyClientSocketPool);
 279 };
 280
 281 }  // namespace net
 282
 283 #endif  // NET_HTTP_HTTP_PROXY_CLIENT_SOCKET_POOL_H_