2 Jul
2021
2 Jul
'21
12:03 p.m.
You won't see proper $mb after rtpengine changes in that way. $mb will be
rewritten on the latest stage of packet processing. See sngrep or wireshark
or either use read_sdp_pv / write_sdp_pv
Also our can use apply_message_changes before log, but I would not
recommend to do so if this is a production under load.
On Fri, 2 Jul 2021, 10:28 Paul Smith, <paul.smith(a)claritytele.com> wrote:
Hi,
[Note I posted this yesterday from the wrong email address.]
I am struggling to see why my SDP is not being set correctly on the INVITE
to my supplier with Proxy-Authentication when I use uac_auth().
The initial INVITE to my supplier has correct SDP set by rtpengine_manage.
Then supplier replies with a 407. My failure route correctly handles the
Auth, and also calls NATMANAGE again... but this time the SDP is unchanged
and the private IP and original media information from the original device
is relayed to my supplier.
kamailio.cfg isbased on the default config. Running kamailio 5.4.6 and
using example from uac module for uac_auth.
My failure route calls NATMANAGE. Is there anything special about
uac_auth? Do I need some extra magic to apply the message body changes
after I have run rtpengine_manage().
I can see that the NATMANAGEr test for nat_uac_test("8") is true, and
rtpengine_manage() s being called. But the outgoing SDP is not changed.
Thanks for any hints!
Paul
====================
Extract of kamailio.cfg
failure_route[TRUNKAUTH] {
if (t_is_canceled()) {
exit;
}
route(NATMANAGE);
xlog("L_INFO","In failure route, just finshed NATMANAGE and now body
is $mb");
if(t_check_status("401|407")) {
# $avp(auser) = "test";
# $avp(apass) = "test";
# $avp(apass) = "36d0a02793542b4961e8348347236dbf";
if (uac_auth()) {
t_relay();
}
exit;
}
}
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