blob: 76c03f9ffa755455d91654e022e87e60141f83fa [file] [log] [blame]
* Copyright 2015 Google Inc. All Rights Reserved.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/message_loop.h"
#include "base/threading/non_thread_safe.h"
#include "build/build_config.h"
#include "net/base/address_list.h"
#include "net/base/completion_callback.h"
#include "net/base/net_log.h"
#include "net/socket/stream_socket.h"
#include "starboard/configuration.h"
#include "starboard/socket.h"
#include "starboard/socket_waiter.h"
namespace net {
// A client socket that uses TCP as the transport layer.
class TCPClientSocketStarboard : public StreamSocket, base::NonThreadSafe {
static const int kReceiveBufferSize = SB_NETWORK_RECEIVE_BUFFER_SIZE;
// The IP address(es) and port number to connect to. The TCP socket will try
// each IP address in the list until it succeeds in establishing a
// connection.
TCPClientSocketStarboard(const AddressList& addresses,
net::NetLog* net_log,
const net::NetLog::Source& source);
virtual ~TCPClientSocketStarboard();
// AdoptSocket causes the given, connected socket to be adopted as a TCP
// socket. This object must not be connected. This object takes ownership of
// the given socket and then acts as if Connect() had been called. This
// function is used by TCPServerSocket() to adopt accepted connections
// and for testing.
int AdoptSocket(SbSocket socket);
// Binds the socket to a local IP address and port.
int Bind(const IPEndPoint& address);
// StreamSocket implementation.
int Connect(const CompletionCallback& callback) override;
void Disconnect() override;
bool IsConnected() const override;
bool IsConnectedAndIdle() const override;
int GetPeerAddress(IPEndPoint* address) const override;
int GetLocalAddress(IPEndPoint* address) const override;
const BoundNetLog& NetLog() const override;
void SetSubresourceSpeculation() override;
void SetOmniboxSpeculation() override;
bool WasEverUsed() const override;
bool UsingTCPFastOpen() const override;
int64 NumBytesRead() const override;
base::TimeDelta GetConnectTimeMicros() const override;
bool WasNpnNegotiated() const override;
NextProto GetNegotiatedProtocol() const override;
bool GetSSLInfo(SSLInfo* ssl_info) override;
// Socket methods:
// Multiple outstanding requests are not supported.
// Full duplex mode (reading and writing at the same time) is supported
int Read(IOBuffer* buf,
int buf_len,
const CompletionCallback& callback) override;
int Write(IOBuffer* buf,
int buf_len,
const CompletionCallback& callback) override;
bool SetReceiveBufferSize(int32 size) override;
bool SetSendBufferSize(int32 size) override;
virtual bool SetKeepAlive(bool enable, int delay);
virtual bool SetNoDelay(bool no_delay);
virtual bool SetWindowScaling(bool enable);
// State machine states for connecting the socket asynchronously.
enum ConnectState {
// Returns true if a Connect() is in progress.
bool waiting_connect() const {
return next_connect_state_ != CONNECT_STATE_NONE;
// State machine used by Connect().
int DoConnectLoop(int result);
int DoConnect();
int DoConnectComplete(int result);
// Helper to add a TCP_CONNECT (end) event to the NetLog.
void LogConnectCompletion(int net_error);
// Helper used by Disconnect(), which disconnects minus the logging and
// resetting of current_ai_.
void DoDisconnect();
void DoReadCallback(int rv);
void DoWriteCallback(int rv);
void DidCompleteRead();
void DidCompleteWrite();
void DidCompleteConnect();
// current state of the connect state machine
ConnectState next_connect_state_;
// The net error that CONNECT_STATE_CONNECT last completed with.
int connect_error_;
// Record of connectivity and transmissions, for use in speculative
// connection histograms.
UseHistory use_history_;
scoped_ptr<MessageLoopForIO::SocketWatcher> socket_watcher_;
class Watcher;
scoped_ptr<Watcher> watcher_;
// External callback; called when connect or read is complete.
CompletionCallback read_callback_;
// External callback; called when write is complete.
CompletionCallback write_callback_;
// The buffer used by OnSocketReady to retry Read requests
scoped_refptr<IOBuffer> read_buf_;
int read_buf_len_;
// The buffer used by OnSocketReady to retry Write requests
scoped_refptr<IOBuffer> write_buf_;
int write_buf_len_;
BoundNetLog net_log_;
// the socket descriptor used by this object
SbSocket socket_;
// Local IP address and port we are bound to. Set to NULL if Bind()
// was't called (in that cases OS chooses address/port).
scoped_ptr<IPEndPoint> bind_address_;
// The list of addresses we should try in order to establish a connection.
AddressList addresses_;
// Where we are in above list. Set to -1 if uninitialized.
int current_address_index_;
base::TimeTicks connect_start_time_;
base::TimeDelta connect_time_micros_;
int64 num_bytes_read_;
// This socket was previously disconnected and has not been re-connected.
bool previously_disconnected_;
// The various read/write states that a full-duplex socket can be in.
bool waiting_read_;
bool waiting_write_;
} // namespace net