// 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 JINGLE_GLUE_PSEUDOTCP_ADAPTER_H_ #define JINGLE_GLUE_PSEUDOTCP_ADAPTER_H_ #include "base/basictypes.h" #include "base/compiler_specific.h" #include "base/memory/ref_counted.h" #include "base/memory/scoped_ptr.h" #include "base/threading/non_thread_safe.h" #include "base/timer/timer.h" #include "net/base/net_log.h" #include "net/socket/stream_socket.h" #include "third_party/libjingle/source/talk/p2p/base/pseudotcp.h" namespace jingle_glue { // PseudoTcpAdapter adapts a connectionless net::Socket to a connection- // oriented net::StreamSocket using PseudoTcp. Because net::StreamSockets // can be deleted during callbacks, while PseudoTcp cannot, the core of the // PseudoTcpAdapter is reference counted, with a reference held by the // adapter, and an additional reference held on the stack during callbacks. class PseudoTcpAdapter : public net::StreamSocket, base::NonThreadSafe { public: // Creates an adapter for the supplied Socket. |socket| should already // be ready for use, and ownership of it will be assumed by the adapter. PseudoTcpAdapter(net::Socket* socket); virtual ~PseudoTcpAdapter(); // net::Socket implementation. virtual int Read(net::IOBuffer* buffer, int buffer_size, const net::CompletionCallback& callback) OVERRIDE; virtual int Write(net::IOBuffer* buffer, int buffer_size, const net::CompletionCallback& callback) OVERRIDE; virtual bool SetReceiveBufferSize(int32 size) OVERRIDE; virtual bool SetSendBufferSize(int32 size) OVERRIDE; // net::StreamSocket implementation. virtual int Connect(const net::CompletionCallback& callback) OVERRIDE; virtual void Disconnect() OVERRIDE; virtual bool IsConnected() const OVERRIDE; virtual bool IsConnectedAndIdle() const OVERRIDE; virtual int GetPeerAddress(net::IPEndPoint* address) const OVERRIDE; virtual int GetLocalAddress(net::IPEndPoint* address) const OVERRIDE; virtual const net::BoundNetLog& NetLog() const OVERRIDE; virtual void SetSubresourceSpeculation() OVERRIDE; virtual void SetOmniboxSpeculation() OVERRIDE; virtual bool WasEverUsed() const OVERRIDE; virtual bool UsingTCPFastOpen() const OVERRIDE; virtual bool WasNpnNegotiated() const OVERRIDE; virtual net::NextProto GetNegotiatedProtocol() const OVERRIDE; virtual bool GetSSLInfo(net::SSLInfo* ssl_info) OVERRIDE; // Set the delay for sending ACK. void SetAckDelay(int delay_ms); // Set whether Nagle's algorithm is enabled. void SetNoDelay(bool no_delay); // When write_waits_for_send flag is set to true the Write() method // will wait until the data is sent to the remote end before the // write completes (it still doesn't wait until the data is received // and acknowledged by the remote end). Otherwise write completes // after the data has been copied to the send buffer. // // This flag is useful in cases when the sender needs to get // feedback from the connection when it is congested. E.g. remoting // host uses this feature to adjust screen capturing rate according // to the available bandwidth. In the same time it may negatively // impact performance in some cases. E.g. when the sender writes one // byte at a time then each byte will always be sent in a separate // packet. // // TODO(sergeyu): Remove this flag once remoting has a better // flow-control solution. void SetWriteWaitsForSend(bool write_waits_for_send); private: class Core; scoped_refptr<Core> core_; net::BoundNetLog net_log_; DISALLOW_COPY_AND_ASSIGN(PseudoTcpAdapter); }; } // namespace jingle_glue #endif // JINGLE_GLUE_STREAM_SOCKET_ADAPTER_H_