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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_SPDY_SPDY_PROXY_CLIENT_SOCKET_H_
#define NET_SPDY_SPDY_PROXY_CLIENT_SOCKET_H_
#include <list>
#include <string>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.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/http_request_headers.h"
#include "net/http/http_request_info.h"
#include "net/http/http_response_info.h"
#include "net/http/proxy_client_socket.h"
#include "net/log/net_log.h"
#include "net/spdy/spdy_http_stream.h"
#include "net/spdy/spdy_protocol.h"
#include "net/spdy/spdy_read_queue.h"
#include "net/spdy/spdy_session.h"
#include "net/spdy/spdy_stream.h"
namespace net {
class AddressList;
class HttpStream;
class IOBuffer;
class SpdyStream;
class NET_EXPORT_PRIVATE SpdyProxyClientSocket : public ProxyClientSocket,
public SpdyStream::Delegate {
public:
// Create a socket on top of the |spdy_stream| by sending a SYN_STREAM
// CONNECT frame for |endpoint|. After the SYN_REPLY is received,
// any data read/written to the socket will be transferred in data
// frames. This object will set itself as |spdy_stream|'s delegate.
SpdyProxyClientSocket(const base::WeakPtr<SpdyStream>& spdy_stream,
const std::string& user_agent,
const HostPortPair& endpoint,
const HostPortPair& proxy_server,
const BoundNetLog& source_net_log,
HttpAuthController* auth_controller);
// On destruction Disconnect() is called.
~SpdyProxyClientSocket() override;
// ProxyClientSocket methods:
const HttpResponseInfo* GetConnectResponseInfo() const override;
HttpStream* CreateConnectResponseStream() override;
const scoped_refptr<HttpAuthController>& GetAuthController() const override;
int RestartWithAuth(const CompletionCallback& callback) 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 {}
// 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;
// SpdyStream::Delegate implementation.
void OnRequestHeadersSent() override;
SpdyResponseHeadersStatus OnResponseHeadersUpdated(
const SpdyHeaderBlock& response_headers) override;
void OnDataReceived(scoped_ptr<SpdyBuffer> buffer) override;
void OnDataSent() override;
void OnTrailers(const SpdyHeaderBlock& trailers) override;
void OnClose(int status) override;
private:
enum State {
STATE_DISCONNECTED,
STATE_GENERATE_AUTH_TOKEN,
STATE_GENERATE_AUTH_TOKEN_COMPLETE,
STATE_SEND_REQUEST,
STATE_SEND_REQUEST_COMPLETE,
STATE_READ_REPLY_COMPLETE,
STATE_OPEN,
STATE_CLOSED
};
void LogBlockedTunnelResponse() const;
// Calls |callback.Run(result)|. Used to run a callback posted to the
// message loop.
void RunCallback(const CompletionCallback& callback, int result) const;
void OnIOComplete(int result);
int DoLoop(int last_io_result);
int DoGenerateAuthToken();
int DoGenerateAuthTokenComplete(int result);
int DoSendRequest();
int DoSendRequestComplete(int result);
int DoReadReplyComplete(int result);
// Populates |user_buffer_| with as much read data as possible
// and returns the number of bytes read.
size_t PopulateUserReadBuffer(char* out, size_t len);
State next_state_;
// Pointer to the SPDY Stream that this sits on top of.
base::WeakPtr<SpdyStream> spdy_stream_;
// Stores the callback to the layer above, called on completing Read() or
// Connect().
CompletionCallback read_callback_;
// Stores the callback to the layer above, called on completing Write().
CompletionCallback write_callback_;
// CONNECT request and response.
HttpRequestInfo request_;
HttpResponseInfo response_;
// The hostname and port of the endpoint. This is not necessarily the one
// specified by the URL, due to Alternate-Protocol or fixed testing ports.
const HostPortPair endpoint_;
scoped_refptr<HttpAuthController> auth_;
std::string user_agent_;
// We buffer the response body as it arrives asynchronously from the stream.
SpdyReadQueue read_buffer_queue_;
// User provided buffer for the Read() response.
scoped_refptr<IOBuffer> user_buffer_;
size_t user_buffer_len_;
// User specified number of bytes to be written.
int write_buffer_len_;
// True if the transport socket has ever sent data.
bool was_ever_used_;
// Used only for redirects.
bool redirect_has_load_timing_info_;
LoadTimingInfo redirect_load_timing_info_;
const BoundNetLog net_log_;
// The default weak pointer factory.
base::WeakPtrFactory<SpdyProxyClientSocket> weak_factory_;
// Only used for posting write callbacks. Weak pointers created by this
// factory are invalidated in Disconnect().
base::WeakPtrFactory<SpdyProxyClientSocket> write_callback_weak_factory_;
DISALLOW_COPY_AND_ASSIGN(SpdyProxyClientSocket);
};
} // namespace net
#endif // NET_SPDY_SPDY_PROXY_CLIENT_SOCKET_H_
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