def sendFrame(self, toId, message): ackFrame = AckFrame() ackFrame.setUniqueID(self._UIDProvider.UIDFor(toId)) ackFrame.toSend(self._fromId, toId, message) self._frameLayer.sendFrame(ackFrame.type(), ackFrame.fromId(), ackFrame.toId() ackFrame.bytes()) if self._deferreds.get(toId) == None: self._deferreds[toId] = {} self._deferreds[toId][ackFrame.uniqueID()] = AckDeferred(ackFrame) return self._deferreds[toId][ackFrame.uniqueID()].promise()