C#实现局域网UDP广播

接收端:

            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);//初始化一个Scoket协议

             IPEndPoint iep = new IPEndPoint(IPAddress.Any, 9095);//初始化一个侦听局域网内部所有IP和指定端口

             EndPoint ep = (EndPoint)iep;

             socket.Bind(iep);//绑定这个实例

            while (true)
            ...{
                byte[] buffer = new byte[1024];//设置缓冲数据流

                 socket.ReceiveFrom(buffer, ref ep);//接收数据,并确把数据设置到缓冲流里面

                 Console.WriteLine(Encoding.Unicode.GetString(buffer).TrimEnd('\u0000') + " " + DateTime.Now.ToString());

                    }

发送端:

             Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);//初始化一个Scoket实习,采用UDP传输

             IPEndPoint iep = new IPEndPoint(IPAddress.Broadcast, 9095);//初始化一个发送广播和指定端口的网络端口实例

             sock.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1);//设置该scoket实例的发送形式

            string request = "你好,TEST SEND!";//初始化需要发送而的发送数据

            byte[] buffer = Encoding.Unicode.GetBytes(request);

             sock.SendTo(buffer, iep);

             sock.Close();

这样就可以实现对整个局域网内广播数据,和接收数据了.