+ parser = argparse.ArgumentParser(description='Choose an avaiable port and run ssh.', add_help=False)
+ parser.add_argument('--help', action='help')
+ parser.add_argument('-h', '--host', help='the mqtt server', default=MQTT_SERVER)
+ parser.add_argument('-p', '--port', type=int, help='the mqtt port', default=MQTT_PORT)