3.5.5.2 Receiving a Success Response to SUBSCRIBE

  • Article

When a client receives a success response (that is, a 200 OK to the SUBSCRIBE request), it MAY determine whether the server supports BENOTIFY. In a 200 OK response to a SUBSCRIBE request, the server indicates whether it supports BENOTIFY for this client by including the following header:

 Supported: ms-benotify

If the preceding header is present in 200 OK, the client MAY set the BENOTIFYEnabled flag to true.

The server MAY choose not to enable BENOTIFY for clients that are known to have unreliable network connectivity. The client SHOULD also be prepared to handle regular NOTIFY requests.