c# tcpip通讯协议

以下是一个简单的C# TCP/IP通讯协议的例子：

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

public class TCPClient
{
    public static void Main()
    {
        try
        {
            // 创建一个TCP/IP socket
            Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            // 连接到远程主机
            IPAddress ipAddress = IPAddress.Parse("127.0.0.1");
            IPEndPoint remoteEP = new IPEndPoint(ipAddress, 11000);
            clientSocket.Connect(remoteEP);

            // 发送测试信息
            byte[] sendBytes = Encoding.ASCII.GetBytes("This is a test");
            clientSocket.Send(sendBytes);

            // 接收返回信息
            byte[] recvBytes = new byte[1024];
            int bytes = clientSocket.Receive(recvBytes);
            string recvStr = Encoding.ASCII.GetString(recvBytes, 0, bytes);
            Console.WriteLine("Received: {0}", recvStr);

            // 关闭socket
            clientSocket.Shutdown(SocketShutdown.Both);
            clientSocket.Close();
        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
        }
    }
}