UDP问题！

Question

类似下边这种语句我不知道你在什么地方看来的
IPEndPoint dummy = null; 
byte[] res = qClient.client.Receive ( ref dummy ); 
result = System.Text.Encoding.ASCII.GetString(res); 我查找.net帮助信息好像和你的使用方法很大不同从绑定的 Socket 套接字接收数据，将数据存入接收缓冲区。 命名空间:System.Net.Sockets
程序集:System（在 system.dll 中）public int Receive (
byte[] buffer
)public static int SendReceiveTest1(Socket server)
{
    byte[] msg = Encoding.UTF8.GetBytes("This is a test");
    byte[] bytes = new byte[256];
    try 
    {
        // Blocks until send returns.
        int i = server.Send(msg);
        Console.WriteLine("Sent {0} bytes.", i);
        
        // Get reply from the server.
        i = server.Receive(bytes);
        Console.WriteLine(Encoding.UTF8.GetString(bytes));
    }
    catch (SocketException e)
    {
        Console.WriteLine("{0} Error code: {1}.", e.Message, e.ErrorCode);
        return (e.ErrorCode);
    }
    return 0;
}你的Receive的参数与返回值太让人疑惑了。

Answer 1

你看看这。。
        public void Send()
        {
            try{
            tcp=new TcpClient ("127.0.0.1",51888);
            tcp.Connect("127.0.0.1",51888);
            networkstream =tcp.GetStream ();
            byte []bt= System .Text .Encoding .Default .GetBytes(Sendtext );
                    networkstream .Write (bt,0,bt.Length );
                   networkstream .Flush ();
                    networkstream .Close ();
            }
            catch (SocketException e)
            {errstring=e.Message ;
                return ;
            }
         
        }        public void StartListen()
        {
            Thread startlistenthread = new Thread(new ThreadStart(listenPort));
           
        }
        void ListenPort()
        {
            listen.Start();
            while (true)
            {tcp =null;
                try
                {
                    tcp=listen .AcceptTcpClient();                                                  }
                catch (SocketException e)
                {
                    this.errstring =e.Message ;
                    return ;
                }
                ///////////////////////接收数据
               Thread receive=new Thread (new ThreadStart (Receive));
               riceive.Start();
                ///////////////////////////////
            }
                   }
        public void CloseListen()
        {
            throw new System.NotImplementedException();
            if(listen!=null)
            {listen =null ;}
        }        public void Receive()
        {
             networkstream =tcp.GetStream();
                while (true)
                {
                   byte []bt=new byte [1024];
                    networkstream .Read (bt,0,bt.Length );
                    recevietext =System .Text .Encoding.Default .GetString (bt);
                    networkstream .Close ();                }
           
        }

Answer 2

调试服务端程序，看看是哪里出错，你可以将程序代码用try... catch...包围，打印错误信息log到文件中看看是什么错误。