[SR-Users] event_route[tm:branch-failure] question

Daniel-Constantin Mierla miconda at gmail.com
Mon Apr 14 12:05:16 CEST 2014

On 14/04/14 11:59, Juha Heinanen wrote:
> i called t_newtran() also when request came from proxy itself and after
> that $ru was aor, not contact uri, in branch-failure route also during
> the second iteration.
> so somehow calling t_newtran() before t_relay() breaks branch-failure
> route.  it would be nice to get it fixed.
t_newtran() before t_relay() doesn't break branch-failure. The fact is 
that branch-failure is executed with the sip request from the moment 
when transaction is created.

In your case, for first iteration of request, the transaction is created 
by t_newtran() having the aor in r-uri. For second iteration, looped 
request, the transaction is created by t_relay(), after location lookup, 
thus r-uri is the contact of the target.

The fix (or a new option to run if the current behavior was wanted by 
developer) is to run branch-failure with the attributes from outgoing 
request of the branch (not the incoming request, as it is now).

Hope is more clear now.


Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda

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