C＃读取服务器发送的数据

我正在使用Visual Studio上的C＃开发聊天室应用程序 . 我有一个控制台服务器和一个图形界面聊天 . 我成功发送数据：chatbox - > server . 还有服务器 - >聊天箱，但仅限于已发送信息的聊天框（当聊天箱发送了信息时，服务器必须将其发送给所有人，但它仅适用于发件人） . 我希望所有应用都收到信息 . 实际上：App 1 - > Server Server - > App 1 Not App 2我不明白为什么 . 感谢您将来的帮助 .

public void start()
    {
        TcpListener l = new TcpListener(new IPAddress(new byte[] { 127, 0, 0, 1 }), port);
        l.Start();

        while(true)
        {
            TcpClient comm = l.AcceptTcpClient();
            Console.WriteLine("Connection established @" + comm);
            new Thread(new Receiver(comm).doOperation).Start();
        }
    }

class Receiver
    {
        private TcpClient comm;

        public Receiver(TcpClient s)
        {
            comm = s;
        }

        public void doOperation()
        {
            Semaphore s = new Semaphore(1, 1);
          while (true)
             {
                s.WaitOne();
                NetworkStream nwStream = comm.GetStream();
                byte[] buffer = new byte[comm.ReceiveBufferSize];

                //---read incoming stream---
                int bytesRead = nwStream.Read(buffer, 0, comm.ReceiveBufferSize);

                //---convert the data received into a string---
                string dataReceived = Encoding.ASCII.GetString(buffer, 0, bytesRead);
                Console.WriteLine("Received " + dataReceived);

                s.Release();
                s.WaitOne();

                Console.WriteLine("Send to all : " + dataReceived);
                nwStream.Write(buffer, 0, bytesRead);
                s.Release();


            }

        }
    }

我收到聊天框上的信息：

public Form1(string h, int p)
    {
       ...

        comm = new TcpClient(h, p);
        nwStream = comm.GetStream();


        Thread th1 = new Thread(receive);
        th1.Start();



    }

    public void receive()
    {
        while (true)
        {
            byte[] bytesToRead = new byte[comm.ReceiveBufferSize];
            int bytesRead = nwStream.Read(bytesToRead, 0, comm.ReceiveBufferSize);
            MessageBox.Show("Appli info received : " + Encoding.ASCII.GetString(bytesToRead, 0, bytesRead));

        }
    }