[Standards] Proposed XMPP Extension: MUC presence versioning

Florian Schmaus flo at geekplace.eu
Wed Apr 1 17:11:12 UTC 2020

On 4/1/20 4:27 PM, Georg Lukas wrote:
>>> While I understand that we all love disco, wouldn't it be easier
>>> to only send the ver attribute if one was received from the muc in
>>> the past?
>> That would require that the client received a presence before from the
>> MUC, i.e., that the client joined the MUC room before.
> The client doesn't know a @ver value anyway when joining for the first
> time, and in absense of a @ver, the server will send the full presence
> list.

Ah, yes that makes sense. So indeed a feature discovery is apparently
not necessary to use this extension if the MUC service sends the 'ver'
attribute unconditionally.

I would still keep the feature in disco#info, just to have it
discoverable for feature stat surveys (but maybe only on the MUC service
address's disco#info reponse?).

- Florian

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