def _connectionLost_ABORTING(self, reason):
        """
        Disconnect the response parser with a L{ConnectionAborted} failure, and
        move to the C{'CONNECTION_LOST'} state.
        """
        self._disconnectParser(Failure(ConnectionAborted()))
        self._state = 'CONNECTION_LOST'
        for d in self._abortDeferreds:
            d.callback(None)
        self._abortDeferreds = []

        Disconnect the response parser with a L{ConnectionAborted} failure, and
        move to the C{'CONNECTION_LOST'} state.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/web/_newclient.py