[Kamailio-Users] Retransmitted SUBSCRIBEs

[Iñaki Baz Castillo]

2009/10/9 catalina oancea <catalina.oancea at gmail.com>:
> If a phone re-sends a presence SUBSCRIBE requests even after 5 or 500
> milliseconds, kamailio replied with '400 Bad request' to the second
> SUBSCRIBE
>
> The scenario is:
>
> Phone                           Kamailio
>   SUBSCRIBE    ---------->
>         401    <----------
>   SUBSCRIBE    ---------->
>         202    <----------
>       Pause    [      5ms]              (or 500 ms, the same thing
> happens)
>   SUBSCRIBE    ---------->         (previous SUBSCRIBE retransmitted)
> 400 Bad request <----------
>
> Is this the expected behavior? Is there any way to get kamailio to
> recognize the retransmission?
> This causes problems with Snom phones because they receive 400 reply
> when they retransmit the SUBSCRIBE, and presence stops working.

Ensure you use "t_newtran()" when the SUBSCRIBE is received.


-- 
Iñaki Baz Castillo
<ibc at aliax.net>