Try to re-arm the branch route (t_on_branch(...)) in your failure_route.
> On Dec 16, 2022, at 10:57 AM, Benoît Panizzon <benoit.paniz...@imp.ch> wrote:
>
> Hi List
>
> Some time ago, during my learning curve with kamailio, I learned that a
> branch route is where you make modifications to callerId's.
>
> So I extensively re-engineered the config to move as much as possible
> of callerid modification into branch routes.
>
> But now I discovered, when a call is dispatched via dispatch group with
> multiple destinations and one destination fails, therefore the failure
> route is triggered, the branch route is not being called on the second
> attempt, thus callerid being in the wrong format.
>
> Example:
>
> dispatcher.lst
>
> As an example, consider having dispatcher group 2001 for national traffic
> over two
> dedicated links and Dispatcher group 2002 for international traffic.
>
> 2001 sip:192.168.1.1:5060 0 0 name="Carrier1"
> 2001 sip:192.168.2.1:5060 0 0 name="Carrier1"
>
> 2002 sip:192.168.1.3:5060 0 0 name="Carrier2"
>
> request_route
> {
> # We determine where we want to send the call
> # and choose dispatch group 2001, the 'national' one.
> # But there are are other dispatch groups and branch triggers
> # set this way and routed to DISPATCHCALL
> $avp(dispgroup) = 2001;
> t_on_branch("BR_TO_NATIONAL");
> route(DISPATCHCALL);
> }
>
> route[DISPATCHCALL]
> {
> t_set_fr(120000,1500); # Fast Failover
> t_set_max_lifetime(300000,0);
> t_set_retr(200,800);
> if (ds_select_dst("$avp(dispgroup)", "6")) {
> if (ds_is_from_list(-1,0,"$du")) {
> t_on_failure("DISPATCH_FAILURE");
> route(RELAY);
> }
> }
> }
>
> branch_route[BR_TO_NATIONAL]
> {
> # Here I make sure, all CallerId and Header are correct for the
> # national Carrier
> }
>
> failure_route[DISPATCH_FAILURE]
> {
> if (t_check_status("(5[0-9][0-9])") or (t_branch_timeout() and
> !t_branch_replied())) {
> # Try next DS.
> if (ds_next_dst()) {
> xlog("L_INFO", " --> retargeting request\n");
> t_on_failure("DISPATCH_FAILURE");
> route(RELAY); #### RIGHT HERE!
> exit;
> }
> }
> # We fail
> xlog("L_ERROR", "Call Failed\n");
> }
>
> My issue is not, that if the call is routed after the first path failed
> (marked with #### RIGHT HERE!) then the appropriate branch route is not
> triggered again and the headers are wrong. But I can not set t_on_branch
> within route[DISPATCHCALL] or route[DISPATCH_FAILURE] because this is
> called with a different pre-set branch trigger, depending on the target
> dispatch group.
>
> Is there a way to make a branch trigger more persistent?
>
> --
> Mit freundlichen Grüssen
>
> -Benoît Panizzon- @ HomeOffice und normal erreichbar
> --
> I m p r o W a r e A G - Leiter Commerce Kunden
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--
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/
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