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

[Alex Balashov]

Iñaki Baz Castillo wrote:

> El Lunes, 15 de Diciembre de 2008, Alex Balashov escribió:
>> Iñaki Baz Castillo wrote:
>>> Thanks a lot for pointintg it out, but I don't understant why "To_tag" is
>>> preferred over "branch".
>> It is not my impression that the to-tag is compared as such.  Instead,
>> it appears that a CRC digest of the Via headers is built into the to-tag.
>>
>> If you look in modules/sl/sl_funcs.c:sl_send_reply_helper() you will see
>> that calc_crc_suffix() is called there too in the generation of the
>> reply's to-tag.
>>
>> So, it appears to me that the to-tag - or some part of it - is in effect
>> a derivative of the Via values.
> 
> ahh, ok!
> Thanks.

Please note that this is just my guess - I am not a core developer and 
may be missing something here.  It is best to confirm with them.  :)

-- 
Alex Balashov
Evariste Systems
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