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28 #ifndef TALK_BASE_ASYNCTCPSOCKET_H_
29 #define TALK_BASE_ASYNCTCPSOCKET_H_
31 #include "talk/base/asyncpacketsocket.h"
32 #include "talk/base/scoped_ptr.h"
33 #include "talk/base/socketfactory.h"
37 // Simulates UDP semantics over TCP. Send and Recv packet sizes
38 // are preserved, and drops packets silently on Send, rather than
39 // buffer them in user space.
40 class AsyncTCPSocketBase : public AsyncPacketSocket {
42 AsyncTCPSocketBase(AsyncSocket* socket, bool listen, size_t max_packet_size);
43 virtual ~AsyncTCPSocketBase();
45 // Pure virtual methods to send and recv data.
46 virtual int Send(const void *pv, size_t cb,
47 const talk_base::PacketOptions& options) = 0;
48 virtual void ProcessInput(char* data, size_t* len) = 0;
49 // Signals incoming connection.
50 virtual void HandleIncomingConnection(AsyncSocket* socket) = 0;
52 virtual SocketAddress GetLocalAddress() const;
53 virtual SocketAddress GetRemoteAddress() const;
54 virtual int SendTo(const void *pv, size_t cb, const SocketAddress& addr,
55 const talk_base::PacketOptions& options);
58 virtual State GetState() const;
59 virtual int GetOption(Socket::Option opt, int* value);
60 virtual int SetOption(Socket::Option opt, int value);
61 virtual int GetError() const;
62 virtual void SetError(int error);
65 // Binds and connects |socket| and creates AsyncTCPSocket for
66 // it. Takes ownership of |socket|. Returns NULL if bind() or
67 // connect() fail (|socket| is destroyed in that case).
68 static AsyncSocket* ConnectSocket(AsyncSocket* socket,
69 const SocketAddress& bind_address,
70 const SocketAddress& remote_address);
71 virtual int SendRaw(const void* pv, size_t cb);
73 // Add data to |outbuf_|.
74 void AppendToOutBuffer(const void* pv, size_t cb);
76 // Helper methods for |outpos_|.
77 bool IsOutBufferEmpty() const { return outpos_ == 0; }
78 void ClearOutBuffer() { outpos_ = 0; }
81 // Called by the underlying socket
82 void OnConnectEvent(AsyncSocket* socket);
83 void OnReadEvent(AsyncSocket* socket);
84 void OnWriteEvent(AsyncSocket* socket);
85 void OnCloseEvent(AsyncSocket* socket, int error);
87 scoped_ptr<AsyncSocket> socket_;
89 char* inbuf_, * outbuf_;
90 size_t insize_, inpos_, outsize_, outpos_;
92 DISALLOW_EVIL_CONSTRUCTORS(AsyncTCPSocketBase);
95 class AsyncTCPSocket : public AsyncTCPSocketBase {
97 // Binds and connects |socket| and creates AsyncTCPSocket for
98 // it. Takes ownership of |socket|. Returns NULL if bind() or
99 // connect() fail (|socket| is destroyed in that case).
100 static AsyncTCPSocket* Create(AsyncSocket* socket,
101 const SocketAddress& bind_address,
102 const SocketAddress& remote_address);
103 AsyncTCPSocket(AsyncSocket* socket, bool listen);
104 virtual ~AsyncTCPSocket() {}
106 virtual int Send(const void* pv, size_t cb,
107 const talk_base::PacketOptions& options);
108 virtual void ProcessInput(char* data, size_t* len);
109 virtual void HandleIncomingConnection(AsyncSocket* socket);
112 DISALLOW_EVIL_CONSTRUCTORS(AsyncTCPSocket);
115 } // namespace talk_base
117 #endif // TALK_BASE_ASYNCTCPSOCKET_H_