[Standards] LAST CALL: XEP-0186 (Invisible Command)

Stefan Karlsson sk at synergysky.com
Sun Jul 6 19:09:33 UTC 2014

I am also a bit too late but; how does this work with XEP 0184?


Christian Schudt skrev 06/07/14 20:56:
> I might be too late to the party, but I just began implementing it on client side and I think 3.1.2 Client Handling lacks some point:
> After becoming invisible the client should (automatically?) send directed presence (which equals the last undirected presence) to all entities in the "communicants list"!?
> Here's my other feedback:
>> 1. Is this specification needed to fill gaps in the XMPP protocol stack or to clarify an existing protocol?
> Yes. I remember using invisibility in ICQ back in the 90s :-) so it should be in XMPP in 2014...
>> 2. Does the specification solve the problem stated in the introduction and requirements?
> Yes, maintaining a privacy list on client side is cumbersome.
>> 3. Do you plan to implement this specification in your code? If not, why not?
> Yes.
>> 4. Do you have any security concerns related to this specification?
> Maybe presence leaks, while being invisible and in a MUC room (and some occupants are also on your roster) could be mentioned?
>> 5. Is the specification accurate and clearly written?
> Mostly yes. But some points:
> Is "communicants" a good term in this context?
> http://en.wiktionary.org/wiki/communicant says its obsolete and has primarily a religious meaning.
> I'm no native speaker though.
> I think there's a typo "the client behave as follows". Should be "behaves"?
> Integration with privacy lists: How does the server know what are the "relevant privacy lists". Is it by convention the list named "invisible", which is being activated for the session?
> If yes, wouldn't it prevent directed presence?
> XEP-0126 could have been linked in this section.
> -- Christian

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