[Kamailio-Devel] How does Kamailio match an ACK for a stateless [3456]XX replied by Kamailio itself?

Klaus Darilion klaus.mailinglists at pernau.at
Mon Dec 15 12:24:15 CET 2008

Iñaki Baz Castillo wrote:
> El Lunes, 15 de Diciembre de 2008, Klaus Darilion escribió:
>> AFAIK the sl module registers a callback. It can detect ACK
>> corresponding to stateless responses by certain parameter - I think it
>> is encoded in the totag.
> Wouldn't be better the Via "branch" parameter? (the ACK for a negative reply 
> has the same "branch" since it's part of the same transaction).
> But there can be multiple's ACK with same To_tag (due to re-INVITE's during a 
> dialog).

Maybe it is the branch parameter. I do not know. I only know that it 
uses one of these parameters.


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