Wouldn’t it make more sense to just have an aggressive timeout for the “keeping it there” aspect?
That is, if, upon receipt of a non-100 1xx message, a final dispositive reply does not follow within X seconds, route-advance to the next provider? This can be accomplished with the t_set_fr/t_reset_fr() technique previously discussed. It sounds like you might be making this unnecessarily complicated. :-) Don’t worry about how quickly they send you the progress/alerting messages; instead, worry about how slowly they send you anything else afterward. The only wrinkle I can see that in that is the caller experience... — Sent from mobile, with due apologies for brevity and errors. > On Feb 10, 2021, at 2:13 PM, David Villasmil <[email protected]> > wrote: > > > Some providers have other providers which many times just answer the call and > try to keep it there. It’s a known strategy some scammers use. Getting a > 180/3 in say; 500ms (to a real-life hard line, is probably one such call. > > >> On Wed, 10 Feb 2021 at 18:52, Raúl Alexis Betancor Santana >> <[email protected]> wrote: >> What is the point of refusing a call that answer with a 100/183 "too >> quickly" ? ... I don't get the point on that. >> >> Saludos >> -- >> Raúl Alexis Betancor Santana >> Serlink Telecom S.R.L.U. >> >> De: "David Villasmil" <[email protected]> >> Para: "Kamailio (SER) - Users Mailing List" <[email protected]> >> Enviados: Miércoles, 10 de Febrero 2021 9:57:35 >> Asunto: Re: [SR-Users] Time elapsed since previous message. >> >> Hello Alex, >> Again thanks. >> >> I'm using that calculation to, when receiving a 180/3, if it comes in too >> quickly (i.e. 100ms) i cancel that call, and send a 480 the the A leg. >> I haven't found way of doing this, is this possible at all? I trired setting >> a very low t_set_fr(10,10) (0 means set the default), but that's not >> working... >> >> Is there a way of doing this? >> >> Thanks! >> Regards, >> >> David Villasmil >> email: [email protected] >> phone: +34669448337 >> >> >>> On Tue, Feb 9, 2021 at 3:31 PM David Villasmil >>> <[email protected]> wrote: >>> Thanks Alex, >>> >>> Exactly what I was thinking. Just wondering whether there was a better way. >>> >>> Again THANKS! >>> >>> David >>> >>>> On Tue, 9 Feb 2021 at 14:56, Alex Balashov <[email protected]> >>>> wrote: >>>> Hi, >>>> You can store the timestamp of the last message of interest in a >>>> transaction-persistent variable - that is, an AVP or XAVP - using $TV(): >>>> >>>> https://www.kamailio.org/wiki/cookbooks/5.4.x/pseudovariables#tv_name >>>> >>>> Then, you can do some arithmetic like this to turn the difference between >>>> two timestamps into milliseconds. This is stolen straight from CSRP so >>>> adapt to your needs. :-) >>>> >>>> # Log request processing time. >>>> >>>> $var(cur_time) = $TV(Sn); >>>> >>>> $var(proc_diff) = ( >>>> ((( >>>> $(var(cur_time){s.select,0,.}{s.int}) - >>>> $(avp(proc_start){s.select,0,.}{s.int}) >>>> ) * 1000000) >>>> + >>>> ( >>>> $(var(cur_time){s.select,1,.}{s.int}) - >>>> $(avp(proc_start){s.select,1,.}{s.int}) >>>> ) / 1000) mod 1000 >>>> ); >>>> >>>> — Alex >>>> >>>> — >>>> Sent from my iPad >>>> >>>> On Feb 9, 2021, at 9:40 AM, David Villasmil >>>> <[email protected]> wrote: >>>> >>>> Hello all, >>>> >>>> Is it possible to know the elapsed time since the previously received >>>> message? >>>> >>>> On outgoing calls, I.e: when i get a 180, how long did the 100 arrived? Or >>>> the INVITE... >>>> >>>> Thanks >>>> >>>> David >>>> -- >>>> Regards, >>>> >>>> David Villasmil >>>> email: [email protected] >>>> phone: +34669448337 >>>> _______________________________________________ >>>> Kamailio (SER) - Users Mailing List >>>> [email protected] >>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users >>>> _______________________________________________ >>>> Kamailio (SER) - Users Mailing List >>>> [email protected] >>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users >>> -- >>> Regards, >>> >>> David Villasmil >>> email: [email protected] >>> phone: +34669448337 >> >> _______________________________________________ >> Kamailio (SER) - Users Mailing List >> [email protected] >> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users >> _______________________________________________ >> Kamailio (SER) - Users Mailing List >> [email protected] >> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > -- > Regards, > > David Villasmil > email: [email protected] > phone: +34669448337 > _______________________________________________ > Kamailio (SER) - Users Mailing List > [email protected] > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
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