[OpenSIPS-Devel] [ opensips-Bugs-3605516 ] Failure Route on SIP 477 error (TM)

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Bugs item #3605516, was opened at 2013-02-21 01:48
Message generated for change (Comment added) made by bogdan_iancu
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Category: modules
Group: 1.8.x
Status: Open
>Resolution: Invalid
Priority: 5
Private: No
Submitted By: Christian Lahme (chris-secusmart)
Assigned to: Bogdan-Andrei Iancu (bogdan_iancu)
Summary: Failure Route on SIP 477 error (TM)

Initial Comment:
Failure Route is not executed on a 477 or IP-Blocked error.

- t_on_failure is set
- failure_route is existing
- t_relay is always positive in an if-construct
- you may catch the 477 error inscript but not as a failure route
- Status code is always send

We expected the same behaviour as on a 408 error.

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>Comment By: Bogdan-Andrei Iancu (bogdan_iancu)
Date: 2013-02-26 07:36

Message:
Hi Christian,

Actually this case is supposed to work a bit different when you think.  By
design (on logical reasons), the failure route is triggered only when there
is a SIP failure (transaction failed with negative reply).

In your case, you have a different case of failure - you were actually not
able to send the INVITE out, so it is a transport error. So failure route
is not supposed to be triggered.

What to do here is to use the "0x02" flag with t_relay() - see
http://www.opensips.org/html/docs/modules/1.9.x/tm.html#id293413 - this
will make t_relay() to return failure to script instead of sending the 477
out -> at script level you can handle the failure.

Regards,
Bogdan


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