def get_results(self, scheduler_instance_id):
        """Send a HTTP request to the satellite (GET /_results)
        Get actions results from satellite (only passive satellites expose this method.

        :param scheduler_instance_id: scheduler instance identifier
        :type scheduler_instance_id: str
        :return: Results list on success, [] on failure
        :rtype: list
        """
        res = self.con.get('_results', {'scheduler_instance_id': scheduler_instance_id}, wait=True)
        logger.debug("Got %d results from %s: %s", len(res), self.name, res)
        return res