gistfile1.txt

def self.discover(timeout = 6)
  Timeout::timeout(timeout) do
    dns = DNSSD.browse "_airplay._tcp" do |reply|
      DNSSD.resolve reply.name, reply.type, reply.domain do |resolve_reply|
        device = self.find_or_create_by_hostname(hostname: resolve_reply.target)
        device.update_attributes(last_discovered_at: Time.now, mac_address: resolve_reply.text_record['deviceid'])
      end
    end
  end
end