正确使用Async BeginRead（）方法

Question

服务器的BeginRead部分是这样的：

    private void listen()
    {
        allDone.Reset();
        networkStream.BeginRead(buffer, 0, buffer.Length, new AsyncCallback(newDataRecievedCallback), null);
        allDone.WaitOne(10);
    }

    private void newDataRecievedCallback(IAsyncResult rst)
    {
        try
        {
            int incomeDataSize = networkStream.EndRead(rst);
            lastRecievedBuffer = convertToString(buffer, incomeDataSize).Trim();
            cleanBuffer();

            if (IsValidXml(lastRecievedBuffer)) 
                parseXML(lastRecievedBuffer);
            allDone.Set();

            //Here I call the listen() method again               
            listen();
        }
        catch (Exception ex)
        {
            LogSystem.saveServerError(ex.StackTrace, ex.Source);
        }
    }

NetworkStream的用法：

    private NetworkStream networkStream;
    private TcpClient tcpClient;

    //this part is in the constructor of the Server class
    tcpClient = new TcpClient(loginData.Host, loginData.Port);
    networkStream = tcpClient.GetStream();

这是BeginRead（）的正确用法还是我像同步逻辑一样调用Async BeginRead（）方法？

有没有更好的方法来再次调用listen（）方法呢？ 谢谢！