jdev - 2019-08-24

hi

OMEMO question: when talking to somebody not in my roster, how do I get updates for their devicelist/bundles?

does directed presence help?

(although *they* would have to send directed presence to you)

How would that help me in knowing when something OMEMO-related has been changed?

PEP is presence-based

you’re subscribed as long as you receive presence

So if I have +notify and somebody sends me a directed presence and I also send one, I'd get PEP notifications?

only they need to send you directed presence for you to get notifications

that’s my rough understanding, I haven’t dug much into PEP

interesting

PEP doesn't work with directed presence AFAIK

less interesting

So I'd have to pull every so often?

IFF you have "PEP+", ie full blown pubsub, then you can subscribe manually

oh

I guess I can try that

I've looked at directed presence and PEP but it gets a bit complicated.

But then when do I unsubscribe

Do I ever unsubscribe

You should, yes, or you would be subscribed forever!

Is the subscription associated to the account? That is if I disconnect/reconnect it's still there?

Anyways, if directed presence gave you PEP read access, that would solve some PEP-in-MUC issues, but at the same time probably give more open access than what one normally wants

How so

You could already subscribe manually

I mean for the default "presence" access model that normally limits access to your roster contacts

Directed presence and access_model=open might work

Yeah that's certainly enough for omemo at least.

I think implementations somewhat agreed to have access_model=open, right?

Even if that leaks the existence of the account

(but then vcard-temp already does that anyway?)

right

Is that specified somewhere? That a directed presence would give you PEP notifications?

Nope

Not that I know of

It makes some logical sense tho, at least for open nodes

Ok I'll send something on standards at least

seems reasonable

Are directed presence tracked and eventually followed by an unavailable once my session times out?

Yes