服务器的socket编程UDP协议,C#编程 socket编程之udp服务器端和客户端-.net

using System;

using System.Collections.Generic;

using System.Linq;

using System.Net;

using System.Net.Sockets;

using System.Text;

using System.Threading;

using System.Threading.Tasks;

namespace _023_socket编程_UDP协议_服务器端 {

class Program

{

private static Socket udpServer;

static void Main(string[] args) {

//1,创建socket

udpServer = new Socket (AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

//2,绑定ip跟端口号

udpServer.Bind( new IPEndPoint ( IPAddress.Parse("192.168.1.101")

,7788 ) );

//3，接收数据

new Thread(ReceiveMessage){ IsBackground = true}.Start();

Console.WriteLine("服务器启动...");

Console.ReadKey();

}

static void ReceiveMessage()

{

while (true)

{

EndPoint remoteEndPoint = new IPEndPoint(IPAddress.Any,

0);

byte[] data = new byte[1024];

int length = udpServer.ReceiveFrom (data, ref

remoteEndPoint);//这个方法会把数据的来源(ip:port)放到第二个参数上

string message = Encoding.UTF8.GetString(data,

0, length);

Console.WriteLine("从ip：" + (remoteEndPoint

as IPEndPoint).Address.ToString() + "："

+ (remoteEndPoint as IPEndPoint).Port + "收到了数据："

+ message);

}

}

}

}