c#收发广播消息

收发广播消息要用到Udp协议

服务端发送广播：

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

namespace UdpBroadCast
{
    class Program
    {
        static void Main(string[] args)
        {
            UdpClient udpClient = new UdpClient(AddressFamily.InterNetwork);
            IPEndPoint broadcastIp = new IPEndPoint(IPAddress.Broadcast, 4534);
            int i = 0;
            while (true)
            {
                i++;
                Byte[] b = Encoding.UTF8.GetBytes("广播消息"+i);
                udpClient.Send(b, b.Length, broadcastIp);
                Console.WriteLine(i);
                System.Threading.Thread.Sleep(1000);
            }
        }
    }
}

客户端接收广播消息：

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

namespace UdpBroadClientRecv
{
    class Program
    {
        static void Main(string[] args)
        {
            UdpClient recevieUdpClient = new UdpClient(4534);
            IPEndPoint loaclIP = new IPEndPoint(IPAddress.Any, 0);
            while (true)
            {
                Byte[] r = recevieUdpClient.Receive(ref loaclIP);
                Console.WriteLine(Encoding.UTF8.GetString(r));
            }
        }
    }

这样一个简单的收发广播消息的系统就完成了。