27 May
2008
27 May
'08
3:57 a.m.
El Monday 26 May 2008 20:28:05 Höskuldur escribió:
Hi
I have two user clients behind separate NAT networks. My OpenSER is
directly connected to the Internet and has it's own external IP address.
Both clients are using STUN to get their external IP address and correct
port for SIP messages.
They successfully register with Openser, which is using Nathelper module
and Mediaproxy.
In this case, since the client is behind NAT, it puts the wrong port in the
Contact field of a SIP message.
As a result, SOME SIP messages from OpenSER are never received by the
client.
But with the help of Nathelper, OpenSER should correct the port in Contact
field, by replacing the NAT port with the src port of a SIP message (UDP
pack).
The problem is, that it looks like OpenSER only corrects the port in
Contact field for client A (The one who initiates the call) but not Client
B(The one who's called).
Try this in onreply_route[2]:
if (status =~ "(180)|(183)|2[0-9][0-9]") {
if (isbflagset(BFLAG_NAT_CALLED) || nat_uac_test("1")) {
xlog("L_INFO", "--- NAT detected\n");
fix_nated_contact();
}
use_media_proxy();
}
Tell me if it works.
--
Iñaki Baz Castillo
ibc(a)in.ilimit.es