[Standards] Burner JIDs and MIX [WAS A possible MIX approach: hiding multiple clients]

Sam Whited sam at samwhited.com
Fri Jan 6 16:06:18 UTC 2017

On Fri, Jan 6, 2017 at 1:50 AM, Steve Kille <steve.kille at isode.com> wrote:
> The radical change is to make MIX presence "per user" (at least for JID
> Hidden channels).

I would like to propose an alternative based on XEP-0383: Burner JIDs [1].

If the MIX service itself were to provide burner JIDs a few simple
rules could be enforced by the MIX service to make them work. Burner
JIDs alocated by the MIX service:

  1. MUST have a 1:1 mapping with a real JID
  2. SHOULD NOT expire (although one might envision a situation where
a user starts getting spam to their burner JID so they want to copy
over their roster to a new one to rotate it; this sort of thing could
also be described in the MIX spec if desirable, or maybe the user
really does just want a different proxy JID each time: either way, I
suppose that's a matter of server policy and/or user choice).

This means that users are authenticated using their normal account,
and are authorized to use the MIX service by virtue of having been
assigned a burner JID.

The only real downsides I see to this are that rooms will not show up
in a users normal roster (although this could be solved easily by
clients in the UI, which may even be good because it would mean they
don't show up in clients that don't support MIX), and that it requires
a separate connection to the server for each burner JID in use (if you
wanted a different one per room, that could get expensive). I'm sure
we could solve this by multiplexing multiple sessions over one TCP
connection though, and that's a problem that can be addressed later if
it ever becomes an issue.



[1]: https://xmpp.org/extensions/xep-0383.html

Sam Whited

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