Re: [SR-Users] event_route tm:branch-failure and onreply_route shared variables

I just realized that *$T_branch(uri)* variable in *onreply_route[REPLY]* is always set to first Contact's Address from AoR list. вт, 19 бер. 2019 о 12:05 Володимир Іванець <volodyaivanets(a)gmail.com> пише: > Hello, > > I'll try to break down my scenario as detailed as I can :) > > Following happens when Kamailio receives INVITE from Asterisk: > 1. It decides if Asterisk reaches out to registered UAC. > 2. *lookup("location")* is executed. AoR can have multiple Contacts. > 3. Processing reaches branch_route[MANAGE_BRANCH]. String with > rtpengine_offer parameters is being formed here. It can have different > settings based on each Contact. *rtpengine_offer* is called. > 4. Some phones will respond with 415 or 488. These responces are > processed in event_route[tm:branch-failure:FAILURE]. > 5. Alternative rtpengine_offer parameters are compiled. This time > *call-id* is set to value from *Call-ID* plus a *suffix*. This > information is stored in Htable. *rtpengine_offer* is called. > 6. *$du* is set from apropriate Contact's data from *reg_fetch_contacts("location", > "$ru", "callee")* and *t_relay()* is called. > 7. Responce 200 for this branch will be processed in > *onreply_route[REPLY]*. rtpengine_answer parameters are formed including > *call-id* and *rtpengine_answer* is executed. > > The problem is that that I was not able to rely responce on step 7 to new > request from steps 4-6. I figured that *$(ulc(callee=>addr)[$var(i)])* > in *event_route[tm:branch-failure:FAILURE]* will be the same as > *$T(ruid)* in *t_on_reply("REPLY").* At this point I need to perform > comparison of *$T(ruid)* to saved values from Htable. > > These values have few dozens of characters and operation of comparison > does not look to be efficient. > > It also looks like *$T_branch(uri)* variable (which could be perfect to > use on step 7) is not available in responce to new branch because how I set > *$du* and called *t_relay()*. I was trying to call *lookup("location")* > before *t_relay()* and *$T_branch(uri)* would be available but since > each AoR can have multiple Contacts this will not work. > > Please let me know if I need to provide any clarifications. I will really > appreciate any suggestions on improvements that cam be made here. > > Thanks a lot! > > пн, 18 бер. 2019 о 22:51 Alex Balashov <abalashov(a)evaristesys.com> пише: > >> On Mon, Mar 18, 2019 at 12:43:25PM +0200, Володимир Іванець wrote: >> >> > I found much better description of the problem here >> > https://lists.kamailio.org/pipermail/users/2008-August/019070.html. >> >> Wow. That is some rather ancient history. And I think reflects a >> different place in the evolution of my own understanding of >> Kamailio/OpenSER; it was 11 years ago. I don't know if the question is >> very pertinent today as formulated there. >> >> -- >> Alex Balashov | Principal | Evariste Systems LLC >> >> Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) >> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ >> >> _______________________________________________ >> Kamailio (SER) - Users Mailing List >> sr-users(a)lists.kamailio.org >> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users >> >