}

    public void shutdown() throws IllegalStateException {
        if (client == null) {
            throw new IllegalStateException("No client to shutdown");
        }
        client.shutdown();
    }

    public static void main(String[] args) {
        if (args.length == 0 || args.length > 3) {
            usage();
            return;
        }
        String host = Constants.GEARMAN_DEFAULT_TCP_HOST;
        int port = Constants.GEARMAN_DEFAULT_TCP_PORT;
        String payload = args[args.length - 1];
        for (String arg : args) {
            if (arg.startsWith("-h")) {
                host = arg.substring(2);
            } else if (arg.startsWith("-p")) {
                port = Integer.parseInt(arg.substring(2));
            }
        }