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// Copyright 2015 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_PROXY_CLIENT_SOCKET_WRAPPER_H_
#define NET_HTTP_HTTP_PROXY_CLIENT_SOCKET_WRAPPER_H_
#include <string>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "net/base/completion_callback.h"
#include "net/base/host_port_pair.h"
#include "net/base/load_timing_info.h"
#include "net/http/http_auth_controller.h"
#include "net/http/proxy_client_socket.h"
#include "net/log/net_log.h"
#include "net/socket/next_proto.h"
#include "net/socket/ssl_client_socket.h"
#include "net/socket/ssl_client_socket_pool.h"
#include "net/socket/transport_client_socket_pool.h"
#include "net/spdy/spdy_session.h"
namespace net {
class ClientSocketHandle;
class IOBuffer;
class HttpAuthCache;
class HttpResponseInfo;
class HttpStream;
class IOBuffer;
class ProxyDelegate;
class SpdySessionPool;
class SSLClientSocketPool;
class TransportClientSocketPool;
// Class that establishes connections by calling into the lower layer socket
// pools, creates a HttpProxyClientSocket / SpdyProxyClientSocket, and then
// wraps the resulting socket.
//
// This class is needed to handle auth state across multiple connection. On
// auth challenge, this class retains auth state in its AuthController, and can
// either send the auth response to the old connection, or establish a new
// connection and send the response there.
//
// TODO(mmenke): Ideally, we'd have a central location store auth state across
// multiple connections to the same server instead.
class HttpProxyClientSocketWrapper : public ProxyClientSocket {
public:
HttpProxyClientSocketWrapper(
const std::string& group_name,
RequestPriority priority,
base::TimeDelta connect_timeout_duration,
base::TimeDelta proxy_negotiation_timeout_duration,
TransportClientSocketPool* transport_pool,
SSLClientSocketPool* ssl_pool,
const scoped_refptr<TransportSocketParams>& transport_params,
const scoped_refptr<SSLSocketParams>& ssl_params,
const std::string& user_agent,
const HostPortPair& endpoint,
HttpAuthCache* http_auth_cache,
HttpAuthHandlerFactory* http_auth_handler_factory,
SpdySessionPool* spdy_session_pool,
bool tunnel,
ProxyDelegate* proxy_delegate,
const BoundNetLog& net_log);
// On destruction Disconnect() is called.
~HttpProxyClientSocketWrapper() override;
// Returns load state while establishing a connection. Returns
// LOAD_STATE_IDLE at other times.
LoadState GetConnectLoadState() const;
scoped_ptr<HttpResponseInfo> GetAdditionalErrorState();
// ProxyClientSocket implementation.
const HttpResponseInfo* GetConnectResponseInfo() const override;
HttpStream* CreateConnectResponseStream() override;
int RestartWithAuth(const CompletionCallback& callback) override;
const scoped_refptr<HttpAuthController>& GetAuthController() const override;
bool IsUsingSpdy() const override;
NextProto GetProtocolNegotiated() const override;
// StreamSocket implementation.
int Connect(const CompletionCallback& callback) override;
void Disconnect() override;
bool IsConnected() const override;
bool IsConnectedAndIdle() const override;
const BoundNetLog& NetLog() const override;
void SetSubresourceSpeculation() override;
void SetOmniboxSpeculation() override;
bool WasEverUsed() const override;
bool UsingTCPFastOpen() const override;
bool WasNpnNegotiated() const override;
NextProto GetNegotiatedProtocol() const override;
bool GetSSLInfo(SSLInfo* ssl_info) override;
void GetConnectionAttempts(ConnectionAttempts* out) const override;
void ClearConnectionAttempts() override;
void AddConnectionAttempts(const ConnectionAttempts& attempts) override;
int64_t GetTotalReceivedBytes() const override;
// Socket implementation.
int Read(IOBuffer* buf,
int buf_len,
const CompletionCallback& callback) override;
int Write(IOBuffer* buf,
int buf_len,
const CompletionCallback& callback) override;
int SetReceiveBufferSize(int32 size) override;
int SetSendBufferSize(int32 size) override;
int GetPeerAddress(IPEndPoint* address) const override;
int GetLocalAddress(IPEndPoint* address) const override;
private:
enum State {
STATE_BEGIN_CONNECT,
STATE_TCP_CONNECT,
STATE_TCP_CONNECT_COMPLETE,
STATE_SSL_CONNECT,
STATE_SSL_CONNECT_COMPLETE,
STATE_HTTP_PROXY_CONNECT,
STATE_HTTP_PROXY_CONNECT_COMPLETE,
STATE_SPDY_PROXY_CREATE_STREAM,
STATE_SPDY_PROXY_CREATE_STREAM_COMPLETE,
STATE_SPDY_PROXY_CONNECT_COMPLETE,
STATE_RESTART_WITH_AUTH,
STATE_RESTART_WITH_AUTH_COMPLETE,
STATE_NONE,
};
void OnIOComplete(int result);
// Runs the state transition loop.
int DoLoop(int result);
// Determine if need to go through TCP or SSL path.
int DoBeginConnect();
// Connecting to HTTP Proxy
int DoTransportConnect();
int DoTransportConnectComplete(int result);
// Connecting to HTTPS Proxy
int DoSSLConnect();
int DoSSLConnectComplete(int result);
int DoHttpProxyConnect();
int DoHttpProxyConnectComplete(int result);
int DoSpdyProxyCreateStream();
int DoSpdyProxyCreateStreamComplete(int result);
int DoRestartWithAuth();
int DoRestartWithAuthComplete(int result);
void NotifyProxyDelegateOfCompletion(int result);
void SetConnectTimer(base::TimeDelta duration);
void ConnectTimeout();
const HostResolver::RequestInfo& GetDestination();
State next_state_;
const std::string group_name_;
RequestPriority priority_;
const base::TimeDelta connect_timeout_duration_;
const base::TimeDelta proxy_negotiation_timeout_duration_;
TransportClientSocketPool* const transport_pool_;
SSLClientSocketPool* const ssl_pool_;
const scoped_refptr<TransportSocketParams> transport_params_;
const scoped_refptr<SSLSocketParams> ssl_params_;
const std::string user_agent_;
const HostPortPair endpoint_;
HttpAuthCache* const http_auth_cache_;
HttpAuthHandlerFactory* const http_auth_handler_factory_;
SpdySessionPool* const spdy_session_pool_;
const bool tunnel_;
ProxyDelegate* const proxy_delegate_;
bool using_spdy_;
NextProto protocol_negotiated_;
scoped_ptr<HttpResponseInfo> error_response_info_;
scoped_ptr<ClientSocketHandle> transport_socket_handle_;
scoped_ptr<ProxyClientSocket> transport_socket_;
// Called when a connection is established. Also used when restarting with
// AUTH, which will invoke this when ready to restart, after reconnecting
// if necessary.
CompletionCallback connect_callback_;
SpdyStreamRequest spdy_stream_request_;
scoped_refptr<HttpAuthController> http_auth_controller_;
BoundNetLog net_log_;
base::OneShotTimer connect_timer_;
DISALLOW_COPY_AND_ASSIGN(HttpProxyClientSocketWrapper);
};
} // namespace net
#endif // NET_HTTP_HTTP_PROXY_CLIENT_SOCKET_WRAPPER_H_
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