def close(self, error=None):
""" close down this channel on both sides. """
if not self._closed:
# state transition "opened/sendonly" --> "closed"
# threads warning: the channel might be closed under our feet,
# but it's never damaging to send too many CHANNEL_CLOSE messages
put = self.gateway._send
if error is not None:
put(Message.CHANNEL_CLOSE_ERROR(self.id, str(error)))
else:
put(Message.CHANNEL_CLOSE(self.id))
if isinstance(error, RemoteError):
self._remoteerrors.append(error)
self._closed = True # --> "closed"
self._receiveclosed.set()
queue = self._items
if queue is not None:
queue.put(ENDMARKER)
self.gateway._channelfactory._no_longer_opened(self.id)
