[Kamailio-Users] t_check_trans() fails

[Daniel-Constantin Mierla]

Hello,

On 01/09/2009 08:45 PM, Alex R.S.M wrote:
> Hi,
>
> What might be the cause that t_check_trans() function fails and ACK 
> message is not being routed?
either it comes too late and invite transaction does not exist, or it 
has something wrong in the headers? Can you paste the invite-200ok-ack 
sip trace of such situation?

Cheers,
Daniel


> This is a simple SIP to SIP call.
>
>
>
>          if ( is_method("ACK") )
>          {
>             if ( t_check_trans() )
>             {
>                # non loose-route, but stateful ACK; must be an ACK 
> after a 487 or e.g. 404 from upstream server
>                t_relay();
>                exit;
>             }
>             else
>             {
>                # ACK without matching transaction ... ignore and 
> discard.\n");
>                exit;
>             }
>          }
>
>
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-- 
Daniel-Constantin Mierla
http://www.asipto.com