public void sendPublicMessage(String from, String message) throws IOException
	{
		byteArray = (from+": "+message).getBytes("UTF-8");
		sendPacket = new DatagramPacket(byteArray, byteArray.length, InetAddress.getByName("234.5.6.7"), 9998);
		sc.getMulticastSocket().send(sendPacket);
	}