XMPP, Connect Server, and SRV

Bron Gondwana brong at fastmail.fm
Mon Aug 11 02:32:44 EDT 2008

On Mon, Aug 11, 2008 at 12:32:08AM -0400, Evan Schoenberg wrote:
> On Aug 10, 2008, at 12:25 AM, Bron Gondwana wrote:
>> And you can also create an A record that resolves to multiple IP
>> addresses
> Good point.
>> or that moves over time.
> DNS doesn't typically propagate in a reliably quick fashion, does it?

No, but then neither do SRV records, so you're back at square 1 however
you manage it.  Cheap and nasty technique is to set up an IP forwarding
service on ports {5222,5269} at the old IP pointing to the new IP for
$N hours.  Also, set your TTL down to about 300 seconds beforehand and
you'll only have a few minutes before everyone gets the new IP address
except a few people behind retarded old DNS Service caches (Windows NT
I'm making faces at you right now) and a couple of other "special" 
things that don't honour TTL.

Bron ( doubt they'd know what a SRV record was if it bit them in the
       recursor either )

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