def __init__(self, host='localhost', port=1239, auto=QUERY_AUTO_COMPLETE):
"""
Constructor
:param host: Host name or IP (default localhost)
:param port: Port number (default 1239)
"""
self._host = host
self._port = port
self._net = Network(host, port)
self._result = None
self._query_id = -1
self._auto = auto
