import java.io.*;
import java.net.*;

class MulticastSocketServerDemo{
	public static void main (String[] args) throws IOException{
		System.out.println ("組播服務器啟動...\n"); 
		MulticastSocket s = new MulticastSocket ();//建立組播套接字
		InetAddress group = InetAddress.getByName ("228.5.6.7");
		byte [] dummy = new byte [0];
		
		//創建組播數據包并發送
		DatagramPacket dgp = new DatagramPacket (dummy,0,group,6789);
		for (int i = 0; i < 30000; i++){
			byte [] buffer = ("足球賽 " + i).getBytes ();
			dgp.setData (buffer);
			dgp.setLength (buffer.length);
			s.send (dgp);
		}
		// 關閉套接字
		s.close ();
	}
}