code: def getresponse(self):
          
          if self._error:
              raise compat.saved_exc(self._error)
          elif self._transport is None:
              raise HttpError('not connected')
          message = self._queue.get(timeout=self._timeout)
          if isinstance(message, Exception):
              raise compat.saved_exc(message)
          return message
docs: Wait for and return a HTTP response.
  
          The return value will be a :class:`HttpMessage`. When this method
          returns only the response header has been read. The response body can
          be read using :meth:`~gruvi.Stream.read` and similar methods on
          the message :attr:`~HttpMessage.body`.
  
          Note that if you use persistent connections (the default), it is
          required that you read the entire body of each response. If you don't
          then deadlocks may occur.