def test_remoteAddr(self):
        """
        The C{'REMOTE_ADDR'} key of the C{environ} C{dict} passed to the
        application contains the address of the client making the request.
        """
        d = self.render('GET', '1.1', [], [''])
        d.addCallback(self.environKeyEqual('REMOTE_ADDR', '192.168.1.1'))

        return d

        The C{'REMOTE_ADDR'} key of the C{environ} C{dict} passed to the
        application contains the address of the client making the request.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/web/test/test_wsgi.py