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 JINGLE_GLUE_PSEUDOTCP_ADAPTER_H_ 6 #define JINGLE_GLUE_PSEUDOTCP_ADAPTER_H_ 7 8 #include "base/basictypes.h" 9 #include "base/compiler_specific.h" 10 #include "base/memory/ref_counted.h" 11 #include "base/memory/scoped_ptr.h" 12 #include "base/threading/non_thread_safe.h" 13 #include "base/timer/timer.h" 14 #include "net/base/net_log.h" 15 #include "net/socket/stream_socket.h" 16 #include "third_party/libjingle/source/talk/p2p/base/pseudotcp.h" 17 18 namespace jingle_glue { 19 20 // PseudoTcpAdapter adapts a connectionless net::Socket to a connection- 21 // oriented net::StreamSocket using PseudoTcp. Because net::StreamSockets 22 // can be deleted during callbacks, while PseudoTcp cannot, the core of the 23 // PseudoTcpAdapter is reference counted, with a reference held by the 24 // adapter, and an additional reference held on the stack during callbacks. 25 class PseudoTcpAdapter : public net::StreamSocket, base::NonThreadSafe { 26 public: 27 // Creates an adapter for the supplied Socket. |socket| should already 28 // be ready for use, and ownership of it will be assumed by the adapter. 29 PseudoTcpAdapter(net::Socket* socket); 30 virtual ~PseudoTcpAdapter(); 31 32 // net::Socket implementation. 33 virtual int Read(net::IOBuffer* buffer, int buffer_size, 34 const net::CompletionCallback& callback) OVERRIDE; 35 virtual int Write(net::IOBuffer* buffer, int buffer_size, 36 const net::CompletionCallback& callback) OVERRIDE; 37 virtual bool SetReceiveBufferSize(int32 size) OVERRIDE; 38 virtual bool SetSendBufferSize(int32 size) OVERRIDE; 39 40 // net::StreamSocket implementation. 41 virtual int Connect(const net::CompletionCallback& callback) OVERRIDE; 42 virtual void Disconnect() OVERRIDE; 43 virtual bool IsConnected() const OVERRIDE; 44 virtual bool IsConnectedAndIdle() const OVERRIDE; 45 virtual int GetPeerAddress(net::IPEndPoint* address) const OVERRIDE; 46 virtual int GetLocalAddress(net::IPEndPoint* address) const OVERRIDE; 47 virtual const net::BoundNetLog& NetLog() const OVERRIDE; 48 virtual void SetSubresourceSpeculation() OVERRIDE; 49 virtual void SetOmniboxSpeculation() OVERRIDE; 50 virtual bool WasEverUsed() const OVERRIDE; 51 virtual bool UsingTCPFastOpen() const OVERRIDE; 52 virtual bool WasNpnNegotiated() const OVERRIDE; 53 virtual net::NextProto GetNegotiatedProtocol() const OVERRIDE; 54 virtual bool GetSSLInfo(net::SSLInfo* ssl_info) OVERRIDE; 55 56 // Set the delay for sending ACK. 57 void SetAckDelay(int delay_ms); 58 59 // Set whether Nagle's algorithm is enabled. 60 void SetNoDelay(bool no_delay); 61 62 // When write_waits_for_send flag is set to true the Write() method 63 // will wait until the data is sent to the remote end before the 64 // write completes (it still doesn't wait until the data is received 65 // and acknowledged by the remote end). Otherwise write completes 66 // after the data has been copied to the send buffer. 67 // 68 // This flag is useful in cases when the sender needs to get 69 // feedback from the connection when it is congested. E.g. remoting 70 // host uses this feature to adjust screen capturing rate according 71 // to the available bandwidth. In the same time it may negatively 72 // impact performance in some cases. E.g. when the sender writes one 73 // byte at a time then each byte will always be sent in a separate 74 // packet. 75 // 76 // TODO(sergeyu): Remove this flag once remoting has a better 77 // flow-control solution. 78 void SetWriteWaitsForSend(bool write_waits_for_send); 79 80 private: 81 class Core; 82 83 scoped_refptr<Core> core_; 84 85 net::BoundNetLog net_log_; 86 87 DISALLOW_COPY_AND_ASSIGN(PseudoTcpAdapter); 88 }; 89 90 } // namespace jingle_glue 91 92 #endif // JINGLE_GLUE_STREAM_SOCKET_ADAPTER_H_ 93
