更改我的客户端以使程序能够从服务器返回响应

Question

客户端

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;

public class StateObject
{
    // Client socket.
    public Socket workSocket = null;
    // Size of receive buffer.
    public const int BufferSize = 256;
    // Receive buffer.
    public byte[] buffer = new byte[BufferSize];
    // Received data string.
    public StringBuilder sb = new StringBuilder();
}

public class Program
{
    public static ManualResetEvent connectDone = new ManualResetEvent(false);
    public static ManualResetEvent sendDone = new ManualResetEvent(false);
    public static ManualResetEvent receiveDone = new ManualResetEvent(false);

    public static void Connect(EndPoint remoteEP, Socket client)
    {
        client.BeginConnect(remoteEP,
            new AsyncCallback(ConnectCallback), client);

        connectDone.WaitOne();
    }
    private static void ConnectCallback(IAsyncResult ar)
    {
        try
        {
            // Retrieve the socket from the state object.
            Socket client = (Socket)ar.AsyncState;

            // Complete the connection.
            client.EndConnect(ar);

            Console.WriteLine("Socket connected to {0}",
                client.RemoteEndPoint.ToString());

            // Signal that the connection has been made.
            connectDone.Set();
        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
        }
    }
    private static void Send(Socket client, String data)
    {
        // Convert the string data to byte data using ASCII encoding.
        byte[] byteData = Encoding.ASCII.GetBytes(data);

        // Begin sending the data to the remote device.
        client.BeginSend(byteData, 0, byteData.Length, SocketFlags.None,
            new AsyncCallback(SendCallback), client);
    }
    private static void SendCallback(IAsyncResult ar)
    {
        try
        {
            // Retrieve the socket from the state object.
            Socket client = (Socket)ar.AsyncState;

            // Complete sending the data to the remote device.
            int bytesSent = client.EndSend(ar);
            Console.WriteLine("Sent {0} bytes to server.", bytesSent);

            // Signal that all bytes have been sent.
            sendDone.Set();
        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
        }
    }
    private static void Receive(Socket client)
    {
        try
        {
            // Create the state object.
            StateObject state = new StateObject();
            state.workSocket = client;

            // Begin receiving the data from the remote device.
            client.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,
                new AsyncCallback(ReceiveCallback), state);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
        }
    }
    private static void ReceiveCallback(IAsyncResult ar)
    {
        try
        {
            // Retrieve the state object and the client socket 
            // from the asynchronous state object.
            StateObject state = (StateObject)ar.AsyncState;
            Socket client = state.workSocket;
            // Read data from the remote device.
            int bytesRead = client.EndReceive(ar);
            if (bytesRead > 0)
            {
                // There might be more data, so store the data received so far.
                state.sb.Append(Encoding.ASCII.GetString(state.buffer, 0, bytesRead));
                //  Get the rest of the data.
                client.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0,
                    new AsyncCallback(ReceiveCallback), state);
            }
            else
            {
                // All the data has arrived; put it in response.
                if (state.sb.Length > 1)
                {
                    string response = state.sb.ToString();
                    Console.WriteLine(response);
                }
                // Signal that all bytes have been received.
                receiveDone.Set();
            }
        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
        }
    }
    static void Main(string[] args)
    {
        //IPAddress ipAddress = System.Net.IPAddress.Loopback;
        IPAddress ipAddress = IPAddress.Parse("192.168.0.100");
        IPEndPoint localEndPoint = new IPEndPoint(ipAddress, 1515);
        Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        Connect(localEndPoint, sock);
        string packet;
        //while (true)
        //{
            packet = Console.ReadLine();
            packet += "<EOF>";
            Send(sock, packet);
            Receive(sock);
            connectDone.WaitOne();
        //}
    }
}

这是我的客户端和这个客户端我将通过其exe文件通过另一个程序执行，我想要改变的是这个邮件从服务器返回一个字符串响应并在服务器响应后关闭。 我需要在这段代码中改变什么？