def announce(self, discovery):
        """
        With the passed in Discovery class, attempt to announce to the host agent.
        """
        try:
            url = self.__discovery_url()
            logger.debug("making announce request to %s" % (url))
            response = None
            response = self.client.put(url,
                                       data=self.to_json(discovery),
                                       headers={"Content-Type": "application/json"},
                                       timeout=0.8)

            if response.status_code is 200:
                self.last_seen = datetime.now()
        except (requests.ConnectTimeout, requests.ConnectionError):
            logger.debug("announce", exc_info=True)
        finally:
            return response