Socket怎么加入组播组

byte[] b = new byte[10240];
try
{
    String multiAddress = "225.0.38.123 ";//Datagrams.getMultiIPAddress( "192.168.2.106 ");
    Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
    IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 9000);
    s.Bind(ipep);
    IPAddress ip = IPAddress.Parse(multiAddress);
    s.SetSocketOption(SocketOptionLevel.IP,
            SocketOptionName.AddMembership,
                    new MulticastOption(ip, IPAddress.Any));

    s.ReceiveTimeout = 5000;
    s.Receive(b);

    Console.WriteLine("b.length: " + b[4] + "   " + b[5] + "   " + b[6] + "   " + b[7]);
}
catch (Exception ex)
{
    Console.WriteLine("receive   multicast   exception: " + ex.ToString());

}


这是我上国外网站找的例子!网址是:http://www.codeproject.com/cs/internet/multicast.asp

 

用UdpClient.JoinMulticastGroup,但是UdpClient没有延时设置,如果万一给组播地址发送组播数据包的机器挂了,我这个UdpClient不是一直在那里等待接受数据包吗?这样下来,程序就down在那里啦!

在C#中利用Keep-Alive处理Socket网络异常断开的方法  http://aabbc1122.blog.163.com/blog/static/5704325720118482253640/

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