Re: [SR-Users] Problem with t_relay() and VPN tunnel

The IP: *192.168.2.102 *corresponds to address in LAN *A*, *10.8.0.1* is the VPN address of the same machine in the *A* network. Switching from one to another still results in Perl script working and Kamailio not working.

On Thu, Aug 5, 2010 at 7:48 PM, Carlos Ruiz Diaz carlos.ruizdiaz@gmail.comwrote:

Hi,

I have two SIP servers, *A* and *B*, connected each other though a OPENVPN tunnel. The server *B* needs to t_relay() every SIP message containing the method MESSAGE to the server *A* but these messages never reach destination.

I have tested the tunnel connectivity and works fine. I wrote a Perl script (located in *B*) that sends SIP MESSAGES to Kamailio (located in * A*) trying to figure out what is happening but these messages are received by *A* and processed correctly but when *B* does the same from Kamailio, it is never received.

Here is the route part of kamailio.cfg in *B*:

Observation: ($rU == "1004") result is *true*

if(is_method("MESSAGE")) { if($rU == "1004") { xlog("L_INFO","En 1004");

                    rewritehost("10.8.0.1");

                    if (!t_relay())
                            xlog("L_INFO","MIO Error en t_relay");

                    t_reply("200", "Ok");
                    xlog("L_INFO","MIO despues rewrite");
                    exit;
         }

.....*

The perl script that WORKS:

*$msg = 'MESSAGE sip:1004@192.168.1.2:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.1.2 From: "2002" <sip:2002@192.168.1.2 sip%3A2002@192.168.1.2

...

;tag=1837944796

To: <sip:1004@192.168.1.2 sip%3A1004@192.168.1.2> Call-ID: 19722852989@192.168.1.2 CSeq: 15773 MESSAGE Contact: sip:2002@**PublicIP-protected**:5060 Max-Forwards: 29 User-Agent: DBL Content-Type: text/plain Content-Length: 34

+595981[protected] hello from kamailio ';

use IO::Socket;

my $sock = IO::Socket::INET->new( Proto=>'udp', PeerHost=>'192.168.2.102', PeerPort=>'5060');

print "Sending msg $msg\n";

$sock->send($msg) or die "error sending $!\n";

*Please help!

Thanks in advance.

Carlos.