网络编程，python服务端，C#客户端

python客户端
看注释，注释写的很清楚，copy粘贴即可运行

# coding=utf-8
# 使用utf-8编码
# 版本为python 2.*
import socket

# the max player number
playerNumber = 10

# host and port
host = "127.0.0.1"
port = 12345

# 创建socket，TCP类型的
mySocket = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
# 绑定IP和端口
mySocket.bind((host,port))
# 开始监听
mySocket.listen(playerNumber)

# 发送一个
conn,addr = mySocket.accept()
data = "你好张三，你必死\n"
conn.send(data)

# 接收一个
theGetMessage = conn.recv(1024)
print theGetMessage

# 关闭
conn.close()
mySocket.close()

C#客户端

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;

namespace TCP客户端
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建socket
            Socket mySocket = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
            //链接
            mySocket.Connect(new IPEndPoint(IPAddress.Parse("127.0.0.1"), 12345));
            //接收消息
            byte[] dataBytes = new byte[1024];
            int count = mySocket.Receive(dataBytes);
            string result = Encoding.UTF8.GetString(dataBytes, 0, count);
            Console.Write(result);

            //发送一条消息
            string sendData = Console.ReadLine();
            mySocket.Send(Encoding.UTF8.GetBytes(sendData));
            mySocket.Close();


        }
    }
}

运行结果