On 2016-12-22 15:06, Steve Kille wrote:
> I do not think there is a need to attribute messages to specific
> clients.   From a recipient perspective, messages come from other
> users.

I strongly disagree. Having a proper end-to-end message attribution to clients is a requirement for many XMPP protocols, be it Chat State Notifications,
Message Acks, Last Message Correction or file transfers.
Once the basics are set, we could also use MIX-PM-to-ourself to synchronize
the read-state of individual MIXes.

IMO, providing client attribution is the main selling point for the significantly
increased complexity of MIX over MUC, and reverting that won't do the
protocol any good. Feel free to add this to the Brussels list.

[Steve Kille]

I am not sure what benefit you would have in knowing that a message
comes from [email protected]/df45o5678  (client) rather than
[email protected]  (user)

Hello,

As Georg said, some protocols depend on it, especially XEP-0296, but many others like message correction, chat states, have hard requirements on full JIDs; if only because the XEPs specify that the client should adapt to the remote party
capabilities.

Best regards,

Mathieu
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