Issue:

Asynchronous Route Blocks gets executed as a failure_route, even though there never ever was a failure.

Version:

GIT Trunk (dev), not checked earlier versions.

Example Config / how to reproduce

I've got the following main route:

route {
        [...]
    if (is_method("PUBLISH") && search("^(Event|o)([ \t]*):([ \t]*)reg")) {
                route(PUBLISH);
                break;
        }

    async_sleep("1");

    #Set DLG flag to track dialogs using dialog2
    if (!is_method("REGISTER|SUBSCRIBE"))
        setflag(FLT_DIALOG);
        [...]
}

With debugger module enabled, it shows as follows in syslog:

Aug 17 15:41:09 ubuntu-2gb-fra1-01 [6968]: ERROR: *** cfgtrace:request_route=[DEFAULT_ROUTE] c=[/etc/kamailio/kamailio.cfg] l=397 a=25 n=is_method
Aug 17 15:41:09 ubuntu-2gb-fra1-01 [6968]: ERROR: *** cfgtrace:request_route=[DEFAULT_ROUTE] c=[/etc/kamailio/kamailio.cfg] l=407 a=16 n=if
Aug 17 15:41:09 ubuntu-2gb-fra1-01 [6968]: ERROR: *** cfgtrace:request_route=[DEFAULT_ROUTE] c=[/etc/kamailio/kamailio.cfg] l=402 a=25 n=is_method
Aug 17 15:41:09 ubuntu-2gb-fra1-01 [6968]: ERROR: *** cfgtrace:request_route=[DEFAULT_ROUTE] c=[/etc/kamailio/kamailio.cfg] l=407 a=25 n=async_sleep
Aug 17 15:41:09 ubuntu-2gb-fra1-01 [6975]: ERROR: *** cfgtrace:failure_route=[DEFAULT_ROUTE] c=[/etc/kamailio/kamailio.cfg] l=414 a=16 n=if
Aug 17 15:41:09 ubuntu-2gb-fra1-01 [6975]: ERROR: *** cfgtrace:failure_route=[DEFAULT_ROUTE] c=[/etc/kamailio/kamailio.cfg] l=410 a=25 n=is_method

Why is route_type suddenly a failure-route? At a different part of my logic, this leads to unexpected results.

Looking at modules/tm/t_suspend.c (lines 277 ff.), I see the reason:

        route_type_bk = get_route_type();
        set_route_type(FAILURE_ROUTE);
        /* execute the pre/post -script callbacks based on original route block */
        if (exec_pre_script_cb(&faked_req, cb_type)>0) {
            if (run_top_route(route, &faked_req, 0)<0)
                LM_ERR("failure inside run_top_route\n");
            exec_post_script_cb(&faked_req, cb_type);
        }
        set_route_type(route_type_bk);

Any particular reason, why the route-type is explicitly set to FAILURE_ROUTE?

Thanks,
Carsten

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