[OpenSIPS-Users] B2BUA Topo-Hiding - Cancel Propagation

[Salman Zafar]

Could this be a version bug?, or there is something wrong with the
configs/concept.


On Fri, Nov 22, 2013 at 12:52 PM, Salman Zafar <msalman212 at gmail.com> wrote:

> Hello all,
>          While using basic topo-hiding *script_scenario, *I am facing a
> problem of CANCEL packet not being able to relayed to CALLEE by B2BUA
> opensip.
>
> The scenario is as follow:
>
> Caller ->Carrier ( x.x.36.69) -> B2BUA(x.x.x.171) -> Proxy(x.x.x.142) ....
>
> When caller CANCEL the call, B2BUA server replies back with 200
> cancenling but does not intimate callee resulting in request timeout.
>
> SIP Traces are attached, and following is the brief config
>
>
> *MODParameter*
> modparam("b2b_entities", "script_req_route", "b2b_request")
> modparam("b2b_entities", "script_reply_route", "b2b_reply")
> modparam("b2b_logic", "use_init_sdp", 1)
>
> *CANCEL BLOCK*
>         if (is_method("CANCEL"))
>         {
>                 if (t_check_trans()){
>                         t_relay();
>                 }
>                 exit;
>         }
>
> *INVITE*
> force_send_socket(udp:192.168.226.171:5060);
>                 setflag(ACC_DO); # do accounting
>                 if(src_ip==192.168.36.69) {
>                         $rd = "192.168.226.142";
>                         $rp = "5060";
>                 } else  {
>                         $rd = "192.168.36.69";
>                         $rp = "5060";
>                 }
>
>        b2b_init_request("top hiding");
>        record_route();
>        exit;
>
> --
> Regards
>
> M. Salman Zafar
> VoIP Professional
>
>


-- 
Regards

M. Salman Zafar
VoIP Professional
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