Hi Daniel, would it be inappropriate to increase the branch number to the maximum possible, by default?
Regards, Carlos On Tue, Sep 30, 2014 at 5:28 AM, Daniel-Constantin Mierla <mico...@gmail.com > wrote: > Hello, > > > On 29/09/14 22:47, João Vitor Arruda wrote: > > Hi folks, > > I have a question related with the limited number of branches being 12 > in config.h > #define MAX_BRANCHES 12 /*!< maximum number of branches > per transaction */ > > I am trying to implement a Call Group that consists in trying each > member of the group (that can result in a parallel forking when lookup() is > used) in sequence (similar to serial forking). > > Currently I have written code that is similar to the one described here: > > > http://www.kamailio.org/dokuwiki/dokuphp/tutorials:avpops#serial_forking > > The only difference is that for each member I call lookup() and then in > the failure_route(), I pull the next member from the stack and call > lookup() again. The code works fine when used for groups with less than 12 > members. However, call groups with 12 or more members fails as I can never > reach remaining extensions once MAX_BRANCHES limit is reached. > > I've tried another approach using the functions described here: > > > http://kamailio.org/docs/modules/4.1.x/modules/tm.html#tm.serial_forking > > but it too uses a new branch for every group member until the 12 limit > is reached out. > > I also tried to use the functions "remove_branch(index)" and > "clear_branches()" (both of which are poorly documented. In fact the only > reference I ever found for these functions was here: > http://www.kamailio.org/wiki/features/new-in-3.2.x#functions). > Unfortunately, I wasn't able to prevent the MAX_BRANCHES limit from being > reached. > > Ultimately, my goal is to have a limitless Call Group. Do you have any > suggestions? (other than increasing the hard coded MAX_BRANCHES limit) > > the easiest is probably recompiling with more branches. There was someone > saying that he is going to submit a patch on making the number of branches > more dynamic, but I haven't seen it back. > > From routing point of view, you can try a workaround with: > - append 11 branches to the same sip address (see append_branch() > function) and relay > - be sure you allow traffic from server itself > - now you get 12 INVITE coming back to kamailio, so you get 12 INVITE > requests and you can set 12 different destinations for each, ending up with > 144 over-all branches in the group call > - if you need more, you can loop back again one or more of those INVITE > requests with branches pointing to same SIP address > > Cheers, > Daniel > > -- > Daniel-Constantin Mierlahttp://twitter.com/#!/miconda - > http://www.linkedin.com/in/miconda > > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users > > -- Carlos http://caruizdiaz.com
_______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users