On 11/22/11 2:04 AM, Iñaki Baz Castillo wrote:
> Hi, imagine a Proxy which first receives a 480 response and forwards
> it upstream to the UAC (and receives the ACK) but later, for some
> annoying reason, the Proxy receives a 200 for the same client
> transaction.
>
> Should the client discard it? or should it route it? (let's assume
> that it occurs in the same second so the transaction still is in
> memory, but in "completed" state.
>
> I know that in case of two 2XX, the second one would find the client
> transaction in "accepted" state (RFC 6026) so it should let the second
> 2XX to go to the UAC. But in the case I propose the first final
> response was a 480. RFC 6026 section 8.4 (in figure 5: INVITE client
> transaction) does not tell what to do in case of receiving a 2XX while
> in "completed" state.
>
> Thanks a lot.
Somebody is breaking the rules. I can see of no valid way for this to
occur. The forking proxy should not have let both responses through.
So I think you can do whatever you think will work best for you.
Thanks,
Paul
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