[SR-Users] Proxy for ACK

Rick van Rein rick+kamailio.org at vanrein.org
Sat May 7 10:36:49 CEST 2022


Thanks Juha,

> Sorry about the typo, Kamailio needs to add Record-Route header to INVITE
> and then it will route ACK based on Route header.

Of course.  It does mean that I am dependent on the proxy; and so, that I
might also choose to route any ACK messages with !uri==myself.  I'll play
with these options a little.  Clearly, you are suggesting that a proxy
may well relay ACK messages.

Meanwhile, I'm wondering if Contact: headers as stored for follow-ups
like ACK and REFER shouldn't always point to a SIP host (phone), so that
I might need to add DNS for host-resolution only (no SRV).  That would
be a mild complication (mostly adding concurrency) that I could consider.

-Rick



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