Nginx как Comet сервер

http://highload.com.ua/index.php/2010/07/21/%D0%B8%D1%81%D0%BF%D0%BE%D0%BB%D1%8C%D0%B7%D1%83%D0%B5%D0%BC-nginx-%D0%BA%D0%B0%D0%BA-long-polling-comet-%D1%81%D0%B5%D1%80%D0%B2%D0%B5%D1%80/