def announce(self, infohash, peerid):
discovery_logger.info("announcing: %s", infohash)
service_name = "_BitTorrent-%s._tcp.local." % infohash
# do I need to keep the browser around?
browser = Zeroconf.ServiceBrowser(self.server, service_name, self)
df = get_deferred_host_ip()
df.addCallback(self._announce2, peerid, service_name)
return df
