Client中有两个按钮，Server中也有两个。希望Client窗体中按button1将数据发出去，Server按Button1接收。第二个按钮相反。代码错哪

不管是Client还Server，如果Server的button2_Click按下监听了，Client按下发送了，Server能正常收到Client发送的内容，当再按button2_Click或者Client发送的按钮就无法响应了。当Server按下发送，Client按下监听时，Client也能收到Server发来的内容，但是第二次也无法响应了。这如何解决？button2_Click每按下监听才监听一次，能否始终监听？如何实现？Client也希望始终监听，并且监听的同时都希望能不妨碍Server和Client相互发送信息。
服务器：
 delegate void setText();//定义一个线程委托        private void button2_Click(object sender, EventArgs e)
        {
            Thread demoThread = new Thread(new ThreadStart(this.ThreadProcSafe));
            demoThread.Start();
        }
        private void ThreadProcSafe()
        {
            setText d = new setText(Threading); //实例化一个委托
            this.Invoke(d);  //在拥用此控件的基础窗体句柄的线程上执行指定的委托
        }
        public void Threading()
        {
            try
                {
                    int server_port = 12345;
                    string server_ip = GetLocalIp();
                    IPAddress localhost_ip = IPAddress.Parse(GetLocalIp());//将 IP 地址字符串转换为 IPAddress 实例
                    IPEndPoint server_ipe = new IPEndPoint(localhost_ip, server_port);//将网络端点表示为 IP 地址和端口号。
                    Socket server_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                    server_socket.Bind(server_ipe);//绑定
                    server_socket.Listen(50);//参数指定队列中最多可容纳的等待接受的传入连接
                    Socket temp = server_socket.Accept();
                    clientip = (IPEndPoint)temp.RemoteEndPoint;
                    //}
                    string recvStr = "";
                    byte[] recvBytes = new byte[1024*8];
                    int bytes;
                    bytes = temp.Receive(recvBytes);// 接收指定字节数的数据，并将数据存入接收缓冲区。
                    MessageBox.Show("hello"+ bytes); Encoding.UTF8.GetString(recvBytes);
                    textBox1.Text += recvStr;
                    textBox1.Text += System.Environment.NewLine;
                    textBox1.Update();
                    BeepUp.Beep(500, 700);
                    this.BringToFront();
                    this.Focus();
                }
                catch (ArgumentNullException es)
                {
                    Console.WriteLine("ArgumentNullException: {0}", es);
                }
                catch (SocketException es)
                {
                    Console.WriteLine("SocketException: {0}", es);
                }
                Console.ReadLine();
           }
 private void button1_Click(object sender, EventArgs e)
        {
            
                try
                {
                    IPEndPoint client_ipe = (IPEndPoint)this.clientip;
                    Socket server_send = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                    server_send.Connect(client_ipe);
                    string client_sendStr = this.textBox2.Text;
                    byte[] client_sendbytes = Encoding.UTF8.GetBytes(client_sendStr);
                    server_send.Send(client_sendbytes);                    server_send.Close();
                }
                catch (ArgumentNullException es)
                {
                    Console.WriteLine("ArgumentNullException: {0}", es);
                }
                catch (SocketException es)
                {
                    Console.WriteLine("SocketException: {0}", es);
                }
                Console.ReadLine();
        }客户端：
  private void pictureBox1_Click(object sender, EventArgs e)
        {
            try
            {
                int serverhost_port = Convert.ToInt32(Settings.setting_textBox3); 
                string serverhost_ip = Settings.setting_textBox2;
                IPAddress client_ip = IPAddress.Parse(serverhost_ip);
                IPEndPoint client_ipe = new IPEndPoint(client_ip, serverhost_port);
                Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                client.Connect(client_ipe);
                string client_sendStr = Settings.setting_textBox4+"，请求人工服务！！！";
                byte[] client_sendbytes = Encoding.UTF8.GetBytes(client_sendStr);
                client.Send(client_sendbytes);
                string recvStr = "";
                byte[] recvBytes = new byte[1024*8];
                int bytes;
                bytes = client.Receive(recvBytes);//接收数据，并将数据存入接收缓冲区。
                recvStr += Encoding.UTF8.GetString(recvBytes);
                  MessageBox.Show(recvStr);//服务器发过来的数据直接弹出
                  client.Close();
            }
            catch (ArgumentNullException es)
            {
                Console.WriteLine("ArgumentNullException: {0}", es);
            }
            catch (SocketException es)
            {
                Console.WriteLine("SocketException: {0}", es);
            }
            Console.ReadLine();
        }        private void pictureBox3_Click(object sender, EventArgs e)
        {
            try
            {
                int serverhost_port = Convert.ToInt32(Settings.setting_textBox3);
                string serverhost_ip = Settings.setting_textBox2; 
                IPAddress client_ip = IPAddress.Parse(serverhost_ip);
                IPEndPoint client_ipe = new IPEndPoint(client_ip, serverhost_port);
                Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                client.Connect(client_ipe);
                string client_sendStr = "";
                if (BuytextBox.Text.Length == 0)
                {                }
                else
                {
                    client_sendStr = Settings.setting_textBox4 + BuytextBox.Text;// +"ENDENDENDENDENDENDENDENDENDENDEND";
                }
                byte[] client_sendbytes = Encoding.UTF8.GetBytes(client_sendStr);
                client.Send(client_sendbytes);
                string client_recvStr = "";
                byte[] client_recvBytes = new byte[1024];
                int bytes;
                bytes = client.Receive(client_recvBytes);//接收数据，并将数据存入接收缓冲区。
                client_recvStr += Encoding.UTF8.GetString(client_recvBytes);
                                   MessageBox.Show(client_recvStr);
               
            }
            catch (ArgumentNullException es)
            {
                Console.WriteLine("ArgumentNullException: {0}", es);
            }
            catch (SocketException es)
            {
                Console.WriteLine("SocketException: {0}", es);
            }
            Console.ReadLine();
        }