[Serusers] Re: sequential forking / t_on_failure

Alex Bligh alex at alex.org.uk
Wed Jun 2 20:03:45 CEST 2004



--On 02 June 2004 18:38 +0100 Alex Bligh <alex at alex.org.uk> wrote:

> Consider the situation whereby after an INVITE occurs which ser initially
> routes to A (which is, say, busy) and subsequently routes to B. Perhaps it
> has gone through t_on_failure or some other mechanism of sequential
> forking. Assume the INVITE has been OK'd and ACK'd.
>
> What mechanism does ser use to ensure subsequent transactions on the
> call-leg (such as BYE, re-INVITE etc.) are sent to B and not A? IE where
> is
> the state being stored and how?

I am obviously assuming (transaction) stateful forwarding and that
record_route is on (else the proxy wouldn't even get to see BYE etc.)

Alex




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