updated SIP-XMPP gatewaying specs

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Last night I refreshed the following specifications covering protocol
mappings between SIP and XMPP for addresses and errors, presence,
single messages, one-to-one chat sessions, and multi-user chat...

https://datatracker.ietf.org/doc/draft-saintandre-sip-xmpp-core
https://datatracker.ietf.org/doc/draft-saintandre-sip-xmpp-presence
https://datatracker.ietf.org/doc/draft-saintandre-sip-xmpp-im
https://datatracker.ietf.org/doc/draft-saintandre-sip-xmpp-chat
https://datatracker.ietf.org/doc/draft-saintandre-sip-xmpp-groupchat

These specs have been around in one form or another for years. More
recently, a number of people have asked me whether they can be
finished off and published as RFCs. I think they can, although the
specs farther down the list are a bit less mature and need to be
aligned with work on MSRP and SIMPLE-based chat. I've received
feedback offlist in the last few months about several of these
(especially the groupchat spec), which I have not yet incorporated,
but I will endeavor to do that soon.

Thanks for listening,

Peter

- -- 
Peter Saint-Andre
https://stpeter.im/


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