public void run() {
		while(true) {
			byte data[]=new byte[1024];
			DatagramPacket packet=null;
			packet=new DatagramPacket(data,data.length,group,port);
			try {
				socket.receive(packet);
				String message=new String(packet.getData(),0,packet.getLength());	//ȡݱе
				inceAr.setText("ڽܵݣ\n"+message);
				inced.append(message+"\n");
			}catch(Exception e){
				e.printStackTrace();
			}
			if(b==true){
				break;
			}
		}
	}