[OpenSIPS-Users] Flow stops when branch is dropped

[Bogdan-Andrei Iancu]

Hi Mickael,

If you do the "drop" in branch route, that branch will be discarded (not 
sent out at all). IF no branch is actually sent out, you will get the 
error logs from "t_forward_nonack" (as you have).

In this case, the t_relay() will fail (nothing sent) - to get that error 
in script, set flag 0x02 
(http://www.opensips.org/html/docs/modules/1.11.x/tm.html#id294578), 
otherwise the error will be internally handled.

A failure on sending does not trigger a failure route - failure route is 
triggered only if request sent out and the transaction completed with a 
negative code.

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com

On 06.10.2014 11:59, Mickael Marrache wrote:
> Hi,
>
> What happens after drop() is called from a branch_route?
>
> In my case, I armed a failure route for the incoming INVITE in the 
> request route and therefore, I would expect that the failure route 
> would be called after drop() is called. However, I see the following 
> error in the logs and the following reply is returned to the UAC.
>
> Oct  6 08:57:27 DBG:tm:pre_print_uac_request: dropping branch 
> <sip:xxxxxxxxx at xxxxxxxxx:xxxx;user=phone>
> Oct  6 08:57:27 ERROR:tm:t_forward_nonack: failure to add branches
>
> SIP/2.0 500 Server error occurred (1/TM)
>
> I use the failure route to detect current transaction failure and try 
> the next termination if there is.
>
> Thanks,
> Mickael
>
>
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