def check_for_delay(self, verb, path, username=None):
        body = jsonutils.dumps({"verb": verb, "path": path})
        headers = {"Content-Type": "application/json"}

        conn = httplib.HTTPConnection(self.limiter_address)

        if username:
            conn.request("POST", "/%s" % (username), body, headers)
        else:
            conn.request("POST", "/", body, headers)

        resp = conn.getresponse()

        if resp.status < 300 >= 200:
            return None, None

        return resp.getheader("X-Wait-Seconds"), resp.read() or None

    # Note: This method gets called before the class is instantiated,
    # so this must be either a static method or a class method.  It is
    # used to develop a list of limits to feed to the constructor.
    # This implementation returns an empty list, since all limit
    # decisions are made by a remote server.
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/api/openstack/compute/legacy_v2/limits.py/WsgiLimiterProxy.check_for_delay/swapped operands of `>=`