[OpenSER-Users] It required to test "isbflag" in "branch_route"?

[Iñaki Baz Castillo]

Hi, I've discovered en error in my conf when there is an user "B" registered 
from two devices:

- device-B1 behind NAT with NO-STUN.
- device-B2 with public IP.

If "A" from public IP calls to "B" then the blag(6) (NAT) should be tested 
inside a "branch_route", because if not, then it could return TRUE or FALSE 
depending on which device (device-B1 or device-B2) appears first 
in "location" table.

So, if I use:

-----------------------------------------------------------------
# RTP-proxy Section

route[8] {
     if (isbflagset(6)) {
            force_rtp_proxy();
     }
}
-----------------------------------------------------------------

then RtpProxy will be enabled or not enabled for **ALL** the branchs (just 
device-B1 needs RtpProxy). But the pain here is that it's possible to not 
enable RtpProxy in a branch who needs it.


So I think the solution (it seems to work i nmy testing) is to handle this 
in "branch_route":


-----------------------------------------------------------------
# RTP-proxy Section

route[8] {
        t_on_branch("8");
}
branch_route[8] {
     if (isbflagset(6)) {
            force_rtp_proxy();
     }
}
-----------------------------------------------------------------



I would like to confirm this with you, since I've never seen in any conf 
a "branch_route" to handle NAT bflag and RtpProxy. Is my conclusion correct? 
should I keep in mind other things related to this?


Thanks a lot.





-- 
Iñaki Baz Castillo
ibc at in.ilimit.es