def connectionLost(self, reason):
"""
Once the connection is lost, put back the client ID into the pool,
and remove the client from all the channels it has signed on to.
"""
BaseProtocol.connectionLost(self, reason)
factory = self.factory
if self._timeoutCall is not None and self._timeoutCall.active():
self._timeoutCall.cancel()
self._timeoutCall = None
if self._currentPing is not None and self._currentPing.active():
self._currentPing.cancel()
self._currentPing = None
for channel in self.channels.values():
self.leaveChannel(channel)
if self.isAccepted:
factory.userPool.putBack(self.id)
del self.factory.connections[self]
