def __init__(self, parent_server):
        """
        Initialize; save an instance variable pointing to our
        :py:class:`~.TwistedServer`

        :param parent_server: the TwistedServer instance that started this
        :type parent_server: :py:class:`~.TwistedServer`
        """
        logger.debug("Initializing WineProcessProtocol")
        self.parent_server = parent_server
        self.have_data = False