Hello, you should be able to disable sending internal replies inside tm in case of t_relay() failure with:
* https://www.kamailio.org/docs/modules/stable/modules/tm.html#tm.f.t_set_disable_internal_reply The to handling in the IF branch of t_relay() execution if it returns false. There is no need to use event_route from sl module in this case. Cheers, Daniel On 27.11.20 09:41, Henning Westerholt wrote: > > Hello, > > > > any comment on this topic? Would be great to get an opinion at least > on the first question, then I could document it or open an issue for it. > > > > Thanks, > > > > Henning > > > > -- > > Henning Westerholt – https://skalatan.de/blog/ <https://skalatan.de/blog/> > > Kamailio services – https://gilawa.com <https://gilawa.com/> > > > > *From:*Henning Westerholt > *Sent:* Wednesday, November 25, 2020 6:53 PM > *To:* Kamailio (SER) - Users Mailing List <[email protected]> > *Cc:* Kamailio (SER) - Development Mailing List > <[email protected]> > *Subject:* handling of locally generated 478 errors > > > > Hello, > > > > I want to ask for your opinion on the best approach regarding the > handling of locally generated 478 errors. > > > > To give an example, like the ones generated from TM during t_relay() > on an unresolvable destination. > > > > Nov 25 17:40:13 kamailio[19345]: ERROR: {28607414 INVITE > bba500ac-a9df-1239-6693-00505682c04d} tm [ut.h:286]: uri2dst2(): > failed to resolve "invalid.skalatan.de" :unresolvable A or AAAA > request (-7) > Nov 25 17:40:13 kamailio[19345]: ERROR: {28607414 INVITE > bba500ac-a9df-1239-6693-00505682c04d} tm [t_fwd.c:1738]: > t_forward_nonack(): failure to add branches > Nov 25 17:40:13 kamailio[19345]: CRITICAL: {28607414 INVITE > bba500ac-a9df-1239-6693-00505682c04d} rtpengine > [../../core/parser/../ip_addr.h:658]: ip_addr2sbuf(): unknown address > family 0 > > > > These errors will not show up in onreply or failure_route. A long > time ago this was discussed on the list [1], as some functionality > were phased out out that support these scenarios. > > > > Kamailio will try to generate a 478 with TM, this will obviously fail > as well, and then generate a 478 with SL. > > > > Question 1) > > > > Is this intentional that the internally generated 478 is not showing > up in the failure_route, like for for 408? This has been tested > several times, but it is a complicated configuration. > > > > Question 2) > > > > Are there any other (better) ideas how to handle that besides using a > “event_route[sl:local-response]” to catch this, e.g. to tear down > otherwise stale rtpengine sessions etc..? As a side note, > event_route[tm:local-response] seems not to work as well because of > the tm failure. > > > > Thanks, > > > > Henning > > > > [1] > https://lists.kamailio.org/pipermail/sr-users/2011-June/069020.html > <https://lists.kamailio.org/pipermail/sr-users/2011-June/069020.html> > > > > -- > > Henning Westerholt – https://skalatan.de/blog/ <https://skalatan.de/blog/> > > Kamailio services – https://gilawa.com <https://gilawa.com/> > > > > > _______________________________________________ > Kamailio (SER) - Users Mailing List > [email protected] > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda Funding: https://www.paypal.me/dcmierla
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