188.8.131.52 Initializing Push Notifications
As an alternate to polling, the client MAY<19> support receiving push notifications from the server. Push notifications use UDPdatagrams as a means to notify the client of pending notifications. To initialize push notifications and register a callback address on the server, the client sends the EcRRegisterPushNotification method, as specified in section 184.108.40.206.
Clients that do not support push notifications SHOULD use either the basic polling method or the asynchronous RPC notification method.