def _requestAborted(self, event):
        """
        Internal handler for when a request is aborted by a remote peer.

        @param event: The Hyper-h2 event that encodes information about the
            reset stream.
        @type event: L{h2.events.StreamReset}
        """
        stream = self.streams[event.stream_id]
        stream.connectionLost(
            ConnectionLost("Stream reset with code %s" % event.error_code)
        )
        self._requestDone(event.stream_id)

        Internal handler for when a request is aborted by a remote peer.

        @param event: The Hyper-h2 event that encodes information about the
            reset stream.
        @type event: L{h2.events.StreamReset}
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/web/_http2.py