[SR-Users] Does Kamailio support PRACK ?

[Alex Balashov]

On 05/13/2013 11:49 AM, Alex Solt wrote:

> Just to confirm:
> Kamaili is forwarding the PRAK packet. However, it seems the kamailio
> ignore the Cseq increase within the PRAK and therefore it ignore the 200
> Ok after that. Then, Kamailio re-send 180 again.

Incorrect on all counts.

1) Kamailio does not "ignore" anything in the PRACK;

2) Kamailio cannot "ignore" 200 OKs; it simply passes all replies that 
it receives.  It is not a recipient of 200 OKs.  Its job is to pass them 
back to the user agent that is.

3) Kamailio likewise cannot originate replies, so it does not re-send 
the 180.  The UAS does.

In other words, the problem you are seeing is between the endpoints that 
are calling each other through the proxy.  Kamailio is just a dumb, 
disinterested messenger here.

-- Alex

-- 
Alex Balashov - Principal
Evariste Systems LLC
235 E Ponce de Leon Ave
Suite 106
Decatur, GA 30030
United States
Tel: +1-678-954-0670
Web: http://www.evaristesys.com/, http://www.alexbalashov.com/