Dear all,

I see in my logs that when the call enters the route :

# Caller NAT detection route
route[NAT] {
#!ifdef WITH_NAT
        xlog("alx --- ROUTE NAT , we have nat ---");
        force_rport();
       if (nat_uac_test("8")) {
                if (method=="REGISTER") {
                        fix_nated_register();
                } else {
                        fix_nated_contact();
                }
                setflag(FLT_NATS);
                xlog("alx --- ROUTE NAT , set flag FLT_NATS ---");
        }
#!endif
        return;
}

I get the following error:

nathelper [nhelpr_funcs.c:195]: message body has length zero
nathelper [nathelper.c:1184]: cannot extract body from msg!

From traces i see that only in the SDP I have an IP which is not public but even with that I cannot engage the RTPPROXY.

My Kamailio version is 3.1.3 and the config file is plain , from installation.

Any ideas?

Thank you Alex






On Sun, Apr 17, 2011 at 2:20 PM, alex pappas <rebel.pappas@gmail.com> wrote:
Dear Alex,

The configuration is the default with WITH_NAT defined.
I have some extra logs (xlog("RTPPROXY started..")) enabled in the RTPPROXY route in order to understand if it is engaged or not.

When I make calls behind NAT the RTPPROXY is engaged but I don't see any RTP in traces.

Do you have any idea on how can I keep the RTP?

Thanks
Alex Pappas




On Fri, Apr 15, 2011 at 6:43 PM, Alex Balashov <abalashov@evaristesys.com> wrote:
On 04/15/2011 09:58 AM, alex pappas wrote:

I have a Kamailio with  RTPoxy configured. The purpose is to pass the
RTP from this server.
When I make calls behind NAT the RTProxy seems to be engaged but in
traces I don't see  any RTP.

Is there anything wrong with the idea or I'm missing something in the
configuration ?

That would be difficult to know without seeing your configuration.

--
Alex Balashov - Principal
Evariste Systems LLC
260 Peachtree Street NW
Suite 2200
Atlanta, GA 30303
Tel: +1-678-954-0670
Fax: +1-404-961-1892
Web: http://www.evaristesys.com/

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