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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, DiffServCodePoint dscp) = 0;
47 virtual void ProcessInput(char* data, size_t* len) = 0;
48 // Signals incoming connection.
49 virtual void HandleIncomingConnection(AsyncSocket* socket) = 0;
51 virtual SocketAddress GetLocalAddress() const;
52 virtual SocketAddress GetRemoteAddress() const;
53 virtual int SendTo(const void *pv, size_t cb, const SocketAddress& addr,
54 DiffServCodePoint dscp);
57 virtual State GetState() const;
58 virtual int GetOption(Socket::Option opt, int* value);
59 virtual int SetOption(Socket::Option opt, int value);
60 virtual int GetError() const;
61 virtual void SetError(int error);
64 // Binds and connects |socket| and creates AsyncTCPSocket for
65 // it. Takes ownership of |socket|. Returns NULL if bind() or
66 // connect() fail (|socket| is destroyed in that case).
67 static AsyncSocket* ConnectSocket(AsyncSocket* socket,
68 const SocketAddress& bind_address,
69 const SocketAddress& remote_address);
70 virtual int SendRaw(const void* pv, size_t cb);
72 // Add data to |outbuf_|.
73 void AppendToOutBuffer(const void* pv, size_t cb);
75 // Helper methods for |outpos_|.
76 bool IsOutBufferEmpty() const { return outpos_ == 0; }
77 void ClearOutBuffer() { outpos_ = 0; }
80 // Called by the underlying socket
81 void OnConnectEvent(AsyncSocket* socket);
82 void OnReadEvent(AsyncSocket* socket);
83 void OnWriteEvent(AsyncSocket* socket);
84 void OnCloseEvent(AsyncSocket* socket, int error);
86 scoped_ptr<AsyncSocket> socket_;
88 char* inbuf_, * outbuf_;
89 size_t insize_, inpos_, outsize_, outpos_;
91 DISALLOW_EVIL_CONSTRUCTORS(AsyncTCPSocketBase);
94 class AsyncTCPSocket : public AsyncTCPSocketBase {
96 // Binds and connects |socket| and creates AsyncTCPSocket for
97 // it. Takes ownership of |socket|. Returns NULL if bind() or
98 // connect() fail (|socket| is destroyed in that case).
99 static AsyncTCPSocket* Create(AsyncSocket* socket,
100 const SocketAddress& bind_address,
101 const SocketAddress& remote_address);
102 AsyncTCPSocket(AsyncSocket* socket, bool listen);
103 virtual ~AsyncTCPSocket() {}
105 virtual int Send(const void* pv, size_t cb, DiffServCodePoint dscp);
106 virtual void ProcessInput(char* data, size_t* len);
107 virtual void HandleIncomingConnection(AsyncSocket* socket);
110 DISALLOW_EVIL_CONSTRUCTORS(AsyncTCPSocket);
113 } // namespace talk_base
115 #endif // TALK_BASE_ASYNCTCPSOCKET_H_