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roster management
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ayyrk 2008-02-13, 23:50 #1
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Subject: roster management
Alex,

I am reviewing how my application adds and removes contacts from the roster.

I have looked at the mini client example but I still want to ask these questions:

Is the XmppCon_OnRosterItem callback the place to handle ALL additions or removals from the roster?

Should I be acting on the PresenceType.subscribed and PresenceType.unsubscribe in the XmppCon_OnPresence callback?

Say I want to write a client that automatically accepts invitations. What does the client have to do when it receives an invitation in order to set up a “both” relationship? Where should it issue the ApproveSubscriptionRequest and XmppCon.PresenceManager.Subcribe.

I am not getting exactly how to use the API in this case.

Thanks and Best regards,
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Alex 2008-02-14, 06:39 #2
Member since Feb 2003 · 4449 posts · Location: Germany
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Quote by ayyrk:
Is the XmppCon_OnRosterItem callback the place to handle ALL additions or removals from the roster?
yes, also for updates and changes of a contact. Eg user wants to change the nickname/display name of a contact.

Quote by ayyrk:
Should I be acting on the PresenceType.subscribed and PresenceType.unsubscribe in the XmppCon_OnPresence callback?
no interaction on the xmpp layer is required there. Only in your user interface if you want to show your user a notification that he is subscribed or unsubscribed now.

Quote by ayyrk:
Say I want to write a client that automatically accepts invitations. What does the client have to do when it receives an invitation in order to set up a “both” relationship? Where should it issue the ApproveSubscriptionRequest and XmppCon.PresenceManager.Subcribe.
I am not getting exactly how to use the API in this case.

If you get a subscribe Presence send back automatically a subscribed Presence. As you mentioned this can be done with the PresenceManager. But to get a mutual subscription (both) you have to check whether the requesting person is already in your roster or not. If not then add this person and send a subscription request.

Alex
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ayyrk 2008-02-14, 14:37 #3
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If you get a subscribe Presence send back automatically a subscribed Presence.


Do I look for and handle the subscribe Presence in the XmppCon_OnPresence(object sender, Presence pres) callback by looking at pres.Type?

Or do I handle it in the XmppCon_OnRosterItem(object sender, RosterItem item) by looking at item.Ask?
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Alex 2008-02-14, 14:46 #4
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Quote by ayyrk:
Do I look for and handle the subscribe Presence in the XmppCon_OnPresence(object sender, Presence pres) callback by looking at pres.Type?
Yes
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ayyrk 2008-02-15, 15:41 #5
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Hi,

I'm using XmppCon.PresenceManager.Subcribe(jid);

If I send a subscription to a client running the same resource then it works. That is to say sending subscription requests to other instances of my agsxmpp based client works. But if I send a subscription to a different client resource it doesn't work.

In the fail case the requesting JID ends up in the receivers roster but the subscription type is NONE.

Question: What is the relationship between resource and the PresenceManager.Subscribe API call?

Basically here's what I am doing: I am sending a subscription request from my mobile device to a spark client. The spark client doesn't popup the "accept deny" dialog box.

Thanks!
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Alex 2008-02-15, 16:11 #6
Member since Feb 2003 · 4449 posts · Location: Germany
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Use always Bare Jabber IDs (without resource) for roster and presence management.
Never use Jids with resources for roster management and Subscriptions

Alex
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ayyrk 2008-02-15, 16:26 #7
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Thanks Alex -   I'm happy to say I figured that out just a minute ago.  Thanks again!!

-Mark
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