Re: [sr-dev] [SR-Users] handling of locally generated 478 errors

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 &lt;sr-users(a)lists.kamailio.org&gt; *Cc:* Kamailio (SER) - Development Mailing List &lt;sr-dev(a)lists.kamailio.org&gt; *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 sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users