socket接收任务

 public static int SendReceiveTest3(Socket server)
        {
            byte[] msg = Encoding.UTF8.GetBytes("This is a test");
            byte[] bytes = new byte[256];
            try
            {

                while(true)

{

              // Blocks until send returns.
                int i = server.Send(msg, msg.Length, SocketFlags.None);
                Console.WriteLine("Sent {0} bytes.", i);

                // Get reply from the server.
                int byteCount = server.Receive(bytes, server.Available,
                                                   SocketFlags.None);
                if (byteCount > 0)
                    Console.WriteLine(Encoding.UTF8.GetString(bytes));
            }
            catch (SocketException e)
            {
                Console.WriteLine("{0} Error code: {1}.", e.Message, e.ErrorCode);
                return (e.ErrorCode);
            }
            return 0;
        }

}
              
        static void Main(string[] args)
        {

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

            IPEndPoint addr = new IPEndPoint(IPAddress.Any, 30002);

            socket.Bind(addr); //使socket与本地终结点相关联
            socket.Listen(0);

            Socket st = socket.Accept(); //创建一个连接

            SendReceiveTest3(st);