Socket连接监听发送的例子

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Net.Sockets;

using System.Net;

using System.Threading;



namespace Imps.Services.WebSocketServices

{

    public class ps

    {

        static ManualResetEvent clientDone = new ManualResetEvent(false);



        public static void Demo()

        {



            SocketAsyncEventArgs socketEventArg = new SocketAsyncEventArgs();

            IPEndPoint hostEntry = new IPEndPoint(System.Net.IPAddress.Parse("192.168.0.102"), 5001);



            // Create a socket and connect to the server

            Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            

            sock.Bind(hostEntry);

            sock.Listen(80);

            socketEventArg.Completed += new EventHandler<SocketAsyncEventArgs>(SocketEventArg_Completed);

            socketEventArg.RemoteEndPoint = hostEntry;

            socketEventArg.UserToken = sock;

            sock.AcceptAsync(socketEventArg);

            

            

            //clientDone.WaitOne();

        }





        // A single callback is used for all socket operations. 

        // This method forwards execution on to the correct handler 

        // based on the type of completed operation

        static void SocketEventArg_Completed(object sender, SocketAsyncEventArgs e)

        {

            switch (e.LastOperation)

            {

                case SocketAsyncOperation.Connect:

                    ProcessConnect(e);

                    break;

                case SocketAsyncOperation.Receive:

                    ProcessReceive(e);

                    break;

                case SocketAsyncOperation.Send:

                    ProcessSend(e);

                    break;

                default:

                    throw new Exception("Invalid operation completed");

            }

        }



        // Called when a ConnectAsync operation completes

        private static void ProcessConnect(SocketAsyncEventArgs e)

        {

            if (e.SocketError == SocketError.Success)

            {

                // Successfully connected to the server



                // Send 'Hello World' to the server

                byte[] buffer = Encoding.UTF8.GetBytes("Hello World");

                e.SetBuffer(buffer, 0, buffer.Length);

                Socket sock = e.UserToken as Socket;

                bool willRaiseEvent = sock.SendAsync(e);

                if (!willRaiseEvent)

                {

                    ProcessSend(e);

                }

            }

            else

            {

                throw new SocketException((int)e.SocketError);

            }

        }



        // Called when a ReceiveAsync operation completes

        // </summary>

        private static void ProcessReceive(SocketAsyncEventArgs e)

        {

            if (e.SocketError == SocketError.Success)

            {

                // Received data from server



            // Data has now been sent and received from the server. 

            // Disconnect from the server

                Socket sock = e.UserToken as Socket;

                sock.Shutdown(SocketShutdown.Send);

                sock.Close();

                clientDone.Set();

            }

            else

            {

                throw new SocketException((int)e.SocketError);

            }

        }





        // Called when a SendAsync operation completes

        private static void ProcessSend(SocketAsyncEventArgs e)

        {

            if (e.SocketError == SocketError.Success)

            {

                // Sent "Hello World" to the server successfully



                //Read data sent from the server

                Socket sock = e.UserToken as Socket;

                bool willRaiseEvent = sock.ReceiveAsync(e);

                if (!willRaiseEvent)

                {

                    ProcessReceive(e);

                }

            }

            else

            {

                throw new SocketException((int)e.SocketError);

            }

        }

    }

}