Socket异步-BeginAccept

测试代码：

客户端：

 public partial class Form1 : Form
    {
        Socket myClientSocket;
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            button1.Text = "发送";
        }

        private void button1_Click(object sender, EventArgs e)
        {
            myClientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            IPEndPoint ipEndPoint = new IPEndPoint(IPAddress.Parse("192.168.0.105"), 49392);
            myClientSocket.Connect(ipEndPoint);
            string sendMessage = "123";
            byte[] mybyte = System.Text.Encoding.GetEncoding("gb2312").GetBytes(sendMessage);
            myClientSocket.Send(mybyte);
            byte[] receivebyte = new byte[1024];
            myClientSocket.Receive(receivebyte);
            textBox1.Text = System.Text.Encoding.GetEncoding("gb2312").GetString(receivebyte);

        }
    }

服务器端：

 public partial class Form1 : Form
    {
        Socket listenServerSocket;
        Socket socket;
        public Form1()
        {
            InitializeComponent();
            listenServerSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            listenServerSocket.Bind(new IPEndPoint(IPAddress.Parse("192.168.0.105"), 49392));
            listenServerSocket.Listen(10);
            listenServerSocket.BeginAccept(new AsyncCallback(OnConnectRequest), listenServerSocket);
 
        }
        public void OnConnectRequest(IAsyncResult ar)
        {
            //初始化一个SOCKET，用于其它客户端的连接
            Socket server1 = (Socket)ar.AsyncState;
            socket = server1.EndAccept(ar);
            //将要发送给连接上来的客户端的提示字符串
            string strDateLine = textBox1.Text;
            Byte[] byteDateLine = System.Text.Encoding.GetEncoding("gb2312").GetBytes(strDateLine);
            //将提示信息发送给客户端
            socket.Send(byteDateLine, byteDateLine.Length, 0);
            //等待新的客户端连接
            server1.BeginAccept(new AsyncCallback(OnConnectRequest), server1);
            while (true)
            {
                int recv = socket.Receive(byteDateLine);
                string stringdata = Encoding.GetEncoding("gb2312").GetString(byteDateLine, 0, recv);
                DateTimeOffset now = DateTimeOffset.Now;
                //获取客户端的IP和端口
                string ip = socket.RemoteEndPoint.ToString();
                if (stringdata == "STOP")
                {
                    //当客户端终止连接时
                   MessageBox.Show(ip + "已从服务器断开");
                    break;
                }
           
            }

        }
    }