On 13.04.21 20:35, Daniel-Constantin Mierla wrote: > On 13.04.21 19:56, Juha Heinanen wrote: >> Test topology using K 5.4 where topos module is loaded in Proxy1: >> >> A - Proxy1 - Proxy2 - Proxy1 - B >> >> A sends INVITE, B responds with 183 Session Progress, and A sends PRACK. >> >> The result is that PRACK starts to loop in second Proxy1 instance >> instead of being forwarded to B. >> >> If topos module is not loaded in Proxy1, it forwards PRACK to B as it >> should. >> >> Also, if Proxy1 loads topos module, but A does not send PRACK, other >> in-dialog requests (e.g. BYE) work fine. > The topos module was not designed for spirals, so the messages of the > same dialog have to pass only one time through topos processing. For > example, t should work if you load topos in the proxy2. For spirals, it > may work in some cases, but not guaranteed, you may get it working > better by playing with its event_routes to skip topos processing in one > of the Porxy1 steps. > > If you need to do two different topology striping, one for each Porxy1 > steps, you have to try the development version and set different context > for initial requests on Proxy1 steps. I didn't really test it for this > use case, I needed context for some grouping without the case of > spiralling, but thinking a bit about what it does internally, it may > make it work better with spirals.
Btw, just to add as I forgot about, parallel forking was not something really taken in consideration, the case of topos being int he node after a proxy doing parallel forking, it may work, just that was also not part of initial design, you should test it in case you needed for such scenarios. Cheers, Daniel -- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio Advanced Training - Online May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone) * https://www.asipto.com/sw/kamailio-advanced-training-online/ _______________________________________________ Kamailio (SER) - Users Mailing List [email protected] https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
