def getClientAddress(self):
        """
        Return the L{IAddress} of the client that made this request.

        @return: an address.
        @rtype: an L{IAddress} provider.
        """
        if self.client is None:
            return NullAddress()
        return self.client

        Return the L{IAddress} of the client that made this request.

        @return: an address.
        @rtype: an L{IAddress} provider.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/web/test/requesthelper.py