Re: [OpenSIPS-Users] t_relay

[Gary Nyquist]

Thanks Bogdan & Liviu,

 

I have implemented the "failure_route" technique suggested by Liviu.
It is working fine.

 

Will try with t_relay("0x2") and let this forum know how it works. 
I think it should fail and return  -6  (- generic send failed), because the transport of the RURI (Callee Device) is TCP.
But not sure if "tcp_async=1" affects it... Will try with "tcp_async=0" also.

 

Need little more info on following timeout parameters:
 $T_fr_timeout
 $T_fr_inv_timeout

Is there a way to determine (inside the failure_route) which 'timeout' occurred?

 

Thanks
-Gary

 

Sent: Wednesday, July 16, 2014 at 8:37 AM
From: "Bogdan-Andrei Iancu" <bog...@opensips.org>
To: "OpenSIPS users mailling list" <users@lists.opensips.org>, "Gary Nyquist" <g...@gmx.us>
Subject: Re: [OpenSIPS-Users] t_relay

Gary,

Maybe take a look at the 0x02 flag for t_relay() :
    http://www.opensips.org/html/docs/modules/1.12.x/tm.html#id294571

by default, t_relay() is internally sending a negative reply if not able to send the request out (like DNS failure, bad IP, network error, etc).

Regards,

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

On 16.07.2014 10:43, Liviu Chircu wrote:

Hello,



t_relay() will only "fail" because of internal reasons (e.g. out of mem, max number of branches exceeded, transaction has 6XX status...).



It looks like you need to use a failure_route [1] for your transaction, and perform your error handling when it eventually expires, because no replies are being sent back. You can control the transaction timeout with the timeout variables from the TM module [2].



[1]: http://www.opensips.org/Documentation/Script-Routes-1-12#toc3

[2]: http://www.opensips.org/html/docs/modules/1.12.x/tm.html#id295701



Best regards,

Liviu Chircu
OpenSIPS Developer
http://www.opensips-solutions.com
On 07/15/2014 10:20 PM, Gary Nyquist wrote:






Hi,

 

Looking for some insight into the t_relay().

I am using the t_relay() to route INVITE to the Callee device (sip client running on a mobile device).


I was expecting the t_relay() to fail (returning a -ve number), when the sip client is not running on the mobile device.

But I find that t_relay() is not failing in this scenario.

Is this the normal behavior of t_relay()?

 


Thanks

-Gary




 

 
 

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