def handleFrame(self, frame):
ackFrame = AckFrame()
ackFrame.fromFrame(frame)
if ackFrame.isData()
ackFrame.confirmation()
self._frameLayer.sendFrame(confirmationFrame.type(),
self._fromId,
confirmationFrame.toId(),
confirmationFrame.bytes())
elif self.isConfirmation()
uniqueID = ackFrame.uniqueID()
toId = ackFrame.fromId()
self._deferreds[toId][uniqueID].resolve(time.time())
self._deferreds[toId][uniqueID] = None
