[jdev] XMPP doubt

Mickaël Rémond mickael.remond at process-one.net
Tue May 27 11:45:37 CDT 2008


Le 27 mai 08 à 18:23, vitor at easyclick.pt a écrit :

> Hi all!!!
> I'm using jabberd to develop a mobile application.
> When i send an invitation to a friend, he receives a notification.  
> If he
> does nothing (accept/deny) and logout, when he login again the  
> invitation
> doesn't appear, although in database we are not subscribed to each  
> other.
> this notification only apears once?
> where can i find more information about that?

The XMPP specification says it *should* receive the subscription  
addition demand on every login until he does something.
It might not depending on which server you are using.

RFC 3921 section 9.4: Server Delivery and Client Acknowledgement of  
Subscription Requests and State Change Notifications:

"In order to require acknowledgement, a server SHOULD send the request  
or notification to the recipient each time the recipient logs in,  
until the recipient acknowledges receipt of the notification by  
"affirming" or "denying" the notification"
Mickaël Rémond

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