def dataReceived(self, data):
        """
        Interpret data from a request or response body which uses the
        I{chunked} Transfer-Encoding.
        """
        data = self._buffer + data
        self._buffer = b''
        while data:
            data = getattr(self, '_dataReceived_%s' % (self.state,))(data)

        Interpret data from a request or response body which uses the
        I{chunked} Transfer-Encoding.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/web/http.py