Java<->；C#套接字:无法接收消息

我需要在我自己编写的java服务器和C#客户端之间进行套接字通信，问题是C#客户端无法从我的java服务器接收任何消息，但向我的java server发送消息是可行的。

我的工作流程：

1. Java:创建服务器
2. Java:正在等待客户端连接
3. c#：创建客户端
4. c#：建立与服务器的连接
5. c#：向服务器发送消息
6. Java:收到消息
7. java:向c#客户端发送消息
8. c#：从服务器接收消息<-这是客户端等待消息但从未得到消息的地方

Java服务器代码：

public class Communicator {
   private int m_port;
   private Socket m_socket;
   private ServerSocket m_serverSocket;
   public Communicator(int port) {
        this.m_port = port;
        initConnection();
    }
    private void initConnection() {
        try {
            System.out.println("Creating Server");
            m_serverSocket = new ServerSocket(m_port);
            System.out.println("Waiting for client connection");
            m_socket = m_serverSocket.accept();
            System.out.println("Connection made");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
   public String sendMsg(JSONMessage msg) {
        try {
     //get msg
     BufferedReader bufferedReader = new BufferedReader(
           new InputStreamReader(m_socket.getInputStream()));
     System.out.println("Waiting for msg...");
       String answer = bufferedReader.readLine();
       System.out.println("Received: " + answer);
       //send msg
       PrintWriter writer = new PrintWriter(m_socket.getOutputStream(),true);
       writer.print(msg.getMsg());
       System.out.println("Sending: " + msg.getMsg());
       writer.flush();
    } catch (IOException e) {
        e.printStackTrace();
    }
        return "";
    }
}

我的C#客户端代码：

class Communicator
    {
        private int m_port;
        private Thread mainThread;
        public Communicator(int port)
        {
            m_port = port;
            mainThread = new Thread(new ThreadStart(this.initConnection));
            mainThread.Start();
        }
        public void initConnection()
        {
            IPEndPoint ip = new IPEndPoint(IPAddress.Parse("127.0.0.1"), m_port);
            Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            try
            {
                Console.WriteLine("Trying to build connection");
                server.Connect(ip);
                Console.WriteLine("Connection successful");
                NetworkStream ns = new NetworkStream(server);
                StreamReader sr = new StreamReader(ns);
                StreamWriter sw = new StreamWriter(ns);
                string data;
                string welcome = "Hello";
                Console.WriteLine("Sending: " + welcome);
                sw.WriteLine(welcome);
                sw.Flush();
                Console.WriteLine("Receiving...");
                data = sr.ReadLine();
                // --> NEVER REACHING THIS POINT <---
                Console.WriteLine("Received: " + data);                                         
            }
            catch (SocketException e)
            {
                Console.WriteLine("Connection failed.");
                return;
            }
        }
    }

有人知道为什么它从未到达我的客户端代码Console.WriteLine("Received: " + data);吗？

我已经试过两边都等待了。我没有得到任何异常或错误，所以我真的不知道我的问题在哪里。

感谢