[OpenSIPS-Users] loose_route: loop on ACK requests

[Noel R. Morais]

Hi guys,

I'm having problems about loose_route(). Opensips is routing ACK
requests to itself.

I know that posting code and traces are ugly, but I think I do not
have choices. Sorry.

Follow bellow the code regarding loose_route:
if (has_totag()) {
                if (loose_route()) {
                        if(method=="INVITE") {
                                route(5); #Check authentication of re-invites
                        }
                        route(1);
                } else {
                        if ( is_method("ACK") ) {
                                if ( t_check_trans() ) {
                                        route(1);
                                }
                }
        }
}


Follow bellow the trace, 192.168.191.188 is the opensips ip address:
U 2009/03/11 14:46:53.950565 192.168.191.188:5060 -> 192.168.192.233:5060
SIP/2.0 200 OK.
Via: SIP/2.0/UDP 192.168.192.233;branch=z9hG4bKac74079177.
Contact: <sip:XXXXXXXXX at 192.168.193.20:5060>.
Record-Route: <sip:192.168.191.188;lr=on;ftag=1c74077990;did=f9e.d32b00d2>.
Call-ID: 74077637112200051548 at 192.168.192.233.
From: "Jeff002" <sip:YYYYYYYYYY at 192.168.193.20>;tag=1c74077990.
To: <sip:XXXXXXXXX at 192.168.191.188;user=phone>;tag=a94c095b773be1dd6e8d668a785a9c8469ec.
CSeq: 1 INVITE.
Server: Cantata-SIP/10.3.2.51932 IMG 0.
Allow: INVITE, BYE, REGISTER, ACK, OPTIONS, CANCEL, INFO.
Supported: path.
Accept: application/sdp.
Content-Type: application/sdp.
Content-Length: 236.
.
v=0.
o=Cantata_SDP 0 1 IN IP4 192.168.193.20.
s=Cantata-SIP.
c=IN IP4 192.168.193.21.
t=0 0.
m=audio 8944 RTP/AVP 18 101.
a=rtpmap:18 G729/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:101 0-15.
a=silenceSupp:off - - - -.
a=ptime:20.


U 2009/03/11 14:46:53.997019 192.168.192.233:5060 -> 192.168.191.188:5060
ACK sip:XXXXXXXXX at 192.168.193.20:5060 SIP/2.0.
Via: SIP/2.0/UDP 192.168.192.233;branch=z9hG4bKac82192814.
Max-Forwards: 70.
From: "Jeff002" <sip:YYYYYYYYYY at 192.168.193.20>;tag=1c74077990.
To: <sip:XXXXXXXXX at 192.168.191.188;user=phone>;tag=a94c095b773be1dd6e8d668a785a9c8469ec.
Call-ID: 74077637112200051548 at 192.168.192.233.
CSeq: 1 ACK.
Contact: <sip:YYYYYYYYYY at 192.168.192.233>.
Route: <sip:192.168.191.188;lr=on;ftag=1c74077990;did=f9e.d32b00d2>.
Supported: em,timer,replaces,path.
Allow: REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO,SUBSCRIBE,UPDATE.
User-Agent: Audiocodes-Sip-Gateway-MP-102 FXS/v.4.60A.035.001.
Content-Length: 0.
.


U 2009/03/11 14:46:53.998178 192.168.191.188:5060 -> 192.168.191.188:5060
ACK sip:192.168.191.188;lr=on;ftag=1c74077990;did=f9e.d32b00d2 SIP/2.0.
Record-Route: <sip:192.168.191.188;lr=on;ftag=1c74077990>.
Via: SIP/2.0/UDP 192.168.191.188;branch=z9hG4bKef17.5d8b81f4.2.
Via: SIP/2.0/UDP 192.168.192.233;branch=z9hG4bKac82192814.
Max-Forwards: 69.
From: "Jeff002" <sip:YYYYYYYYYY at 192.168.193.20>;tag=1c74077990.
To: <sip:XXXXXXXXX at 192.168.191.188;user=phone>;tag=a94c095b773be1dd6e8d668a785a9c8469ec.
Call-ID: 74077637112200051548 at 192.168.192.233.
CSeq: 1 ACK.
Supported: em,timer,replaces,path.
Allow: REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO,SUBSCRIBE,UPDATE.
User-Agent: Audiocodes-Sip-Gateway-MP-102 FXS/v.4.60A.035.001.
Content-Length: 0.