def __init__(self, *args, **kwargs): """Constructor.""" self._seqno, self._mode = 0, None self._payload = None # set parameters self.delay = None self.nsent, self.nrcvd = 0, 0 self.dest, self.plen = None, None self.recv, self.send = SimEvent(), SimEvent() self.recvbuffer = {} Element.__init__(self, *args, **kwargs)