def request(self, method, url, **kwargs):
        """Send an http request with the specified characteristics.

        Wrapper around `requests.Session.request` to handle tasks such as
        setting headers, JSON encoding/decoding, and error handling.

        :param method: method of HTTP request
        :param url: URL of HTTP request
        :param kwargs: any other parameter that can be passed to
             requests.Session.request (such as `headers`) or `json`
             that will be encoded as JSON and used as `data` argument
        """
        kwargs.setdefault("headers", {})
        kwargs["headers"]["User-Agent"] = self.user_agent
        if self.original_ip:
            kwargs["headers"]["Forwarded"] = "for=%s;by=%s" % (
                self.original_ip, self.user_agent)
        if self.timeout is not None:
            kwargs.setdefault("timeout", self.timeout)
        kwargs.setdefault("verify", self.verify)
        if self.cert is not None:
            kwargs.setdefault("cert", self.cert)
        self.serialize(kwargs)

        self._http_log_req(method, url, kwargs)
        if self.timings:
            start_time = time.time()
        resp = self.http.request(method, url, **kwargs)
        if self.timings:
            self.times.append(("%s %s" % (method, url),
                               start_time, time.time()))
        self._http_log_resp(resp)

        self.last_request_id = resp.headers.get('x-openstack-request-id')

        if resp.status_code >= 400:
            _logger.debug(
                "Request returned failure status: %s",
                resp.status_code)
            raise exceptions.from_response(resp, method, url)

        return resp
dataset/ETHPy150Open openstack-infra/python-storyboardclient/storyboardclient/openstack/common/apiclient/client.py/HTTPClient.request/original