private static void doPortForwarding() throws SocketException, UnknownHostException, IOException, SAXException, ParserConfigurationException {

		GatewayDiscover discover = new GatewayDiscover();
		discover.discover();
		GatewayDevice d = discover.getValidGateway();
		if (null != d)
		{
		    System.out.println("Found gateway device {" + d.getModelName() + "}," + "{" + d.getModelDescription() + "}");
		}
		else
		{
		    System.out.println("No valid gateway device found.");
		    return;
		}
    }