jdev - 2025-10-25

world would be so good if we all would use sortable UUIDs :/

Prosody and ejabberd do, I don't know if you will ever reach "all" :)

yeah i know ejabberd does, since when does prosody?

this is great, now can we have a mam-feature that advertises the fact, than i can also depend on it ✏

or maybe it should be a 0359 feature

Prosody since 13.0.0 I think

> world would be so good if we all would use sortable UUIDs :/ Doesn't some xep demand to use uuid v4, which is not sortable.

no

Seems xep-0388 requires a uuidv4 vor the user agent ID and as I have one getID() function I use everywhere, I use an v4 everywhere now. :D

I use uuidv7 everywhere for similar reason

0388 says it requires UUID because it wants to avoid someone picking a garbage id. The actual requirement that it be uuidv4 isn't really there in practise

Maybe the xep could be changed to require uuid >= v4.

Why?

This is for the client id

The criterion is that's it must be unique

No use case comes to mind why you would want to sort client ids

They are not even generated by the same entity

Sure. But also it doesn't matter. It should probably say "a suitably unique identifier, such as uuidv4"

Yes it should

But it's not really relevant to the the stanza id debate, there it has a use

lovetox: I find it better to have one getID() that I use everywhere, than having to use getIDv4() for one thing and another one for others. That's why I would prefer the client id from 388 to be more flexible and not nailed to v4.

That's the reason I currently use v4 everywhere. :)

The server cannot verify if you used a uuid 😉

UUIDv4 has some bits that are fixed, so it is possible to verify when it hasn't been used (except in the case where those bits coincidentally match)

You can match a form, you can not verify if it's unique

at least not globally, the server of course can check if its unique within his user base, not sure if this has any implications somewhere else

reading it looks more like a, client better use something unique, otherwise they shoot themself in the foot

UUID doesn't guarantee global uniqueness either, it's just on the balance of probabilities

thats true, still good enough

> The server cannot verify if you used a uuid 😉 True, but I usually don't knowingly violate the XEP. :D

tell me you are a new xmpp developer, without telling me

lol

So, you'd say UUIDv7 would also do, as the spirit of the xep demanding v4 is just to assure a "minimum quality"?

Yes

Will I be considered an experienced xmpp developer once I knowingly violate a xep? :D

And the XSF awards you a _Veteran XMPP Developer_ medal

they are just suggestions