On 3/14/12 10:42 AM, Sergey Dobrov wrote: > On 03/14/2012 09:28 PM, Joe Hildebrand wrote: >> >> It could be used by non-PEP pubsub, by, for example, sending an ago stanza >> in your subscribe, or by translating it into a subscription option. > > Yeah, I just mean that it'd be cool to describe such way because it will > probably use iq and not presence.
Well, some non-PEP pubsub services do support presence-based notifications, right? >> XEP-292. Both my vCard that you have subscribed to as well as my list of >> contacts. I don't want the client to have to receive all of these vCards >> every time they log in, including the base64 avatars. >> > > It seems to me that the XEP-292 needs from/to subscription states to be > processed correctly too. Because it will be strange for user that he can > maintain one-way subscription but he can only get vcard updates for > "both" subscribers... Maybe I am wrong, but I am persistently see an > inconsistency here. The XMPP Core protocols provide us the one way > subscriptions but it seems that them will be completely unuseful in the > near future because modern protocols forget about them. I see the > clients complication issues here too. I agree that bidi subscriptions are much preferable! > But it's hard for me to examine the example of the XEP-292 since I don't > fully understand the necessity of instant vcard updates notifications? > Is this for the avatar updates? If so, from/to subscriptions need to be > in game. It's not instant that matters necessarily, but it seems better than polling for an updated vCard every time you log in. > At least, if I imaging me a user which doesn't know anything about XMPP > under-the-hood, I think that it will be pretty non trivial for me why I > have instant vcard updates for some accounts and don't have for another > ones. Some of your contacts are cooler than others. :) But typically I don't think you would show the user an updated vCard unless they asked for it or tried to view it. Using pubsub just improves things underneath (because your client doesn't need to poll). Peter -- Peter Saint-Andre https://stpeter.im/
