Justin Karneges wrote:

That said, on the subject of caching, XMPP servers should be a bit more strict than most of us probably are with ssh, if only to curb spam. Using dialback on the first connection might be acceptable.

And now that I think about it, the whole "use dialback for the first connection, SASL EXTERNAL for all after" concept would be a good way to optimize s2s.

Or rather, use dialback whenever there isn't a cached key available, or the cached key doesn't match the provided key. So if the other side updates their server certificate, dialback is used to re-establish its authenticity.


Regards
Stephen

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