C# Socket编程

//初始化private void myUdp(){Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);//IP address of the server machineIPAddress ipAddress = IPAddress.Loopback;//.Parse(txtServerIP.Text);//Server is listening on port 1000IPEndPoint ipEndPoint = new IPEndPoint(ipAddress, 6002);epServer = (EndPoint)ipEndPoint;//本UDP绑定端口，不用动态端口，用于接收返回IPEndPoint myEndPoint = new IPEndPoint(ipAddress, 6005);clientSocket.Bind((EndPoint)myEndPoint);//Start listening to the data asynchronouslyclientSocket.Connect(epServer);clientSocket.BeginReceiveFrom(byteData, 0, byteData.Length, SocketFlags.None, ref epServer, new AsyncCallback(OnReceive), null);}

//接收private void OnReceive(IAsyncResult ar){ try { clientSocket.EndReceive(ar); //Convert the bytes received into an object of type Data string msgReceived = GetString(byteData); clientSocket.BeginReceiveFrom(byteData, 0, byteData.Length, SocketFlags.None, ref epServer, new AsyncCallback(OnReceive), null); } catch (ObjectDisposedException) { }}

//发送public void SendData(){ byte[] btData = GetBytes(msgToSend); //Send it to the server clientSocket.BeginSendTo(btData, 0, btData.Length, SocketFlags.None, epServer, new AsyncCallback(OnSend), null);} private void OnSend(IAsyncResult ar) { try { if (clientSocket != null) { clientSocket.EndSend(ar); } } catch (ObjectDisposedException) { }}