[OpenSIPS-Users] Problems with loose_route and ACK

[Bogdan-Andrei Iancu]

Hi Olle,

It is like the double-RR indication is ignored (the r2 param) from the 
top Route hdr. Are you sure that the "enable_double_rr" modparam is 
still on ?

Regards,

Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
   https://www.opensips-solutions.com
OpenSIPS Summit 2019
   https://www.opensips.org/events/Summit-2019Amsterdam/

On 9/26/19 4:30 PM, olle at zaark.com wrote:
>
> Hi ,
>
> I have stumbled on a issue with ACK on 200 OK from Freeswitch. We are 
> running 2.4.4 but I have also upgraded to 2.4.6 and testad with the 
> same result.
>
> I get an ACK from our Freeswitch (172.25.0.25), trace from ngrep (some 
> address and numbers have been anonymized).
>
> U 2019/09/26 13:00:22.614545 172.25.0.25:5060 -> 172.25.251.4:5060 #31
>
> ACK 
> sip:c22c11d0-7961-48c6-a603-e3d1872a462a at 95.195.215.15:56188;transport=TCP;ob 
> SIP/2.0.
>
> Via: SIP/2.0/UDP 172.25.0.25;rport;branch=z9hG4bK26XN3DN58vg6e.
>
> Route: 
> <sip:172.25.0.21:5070;lr;r2=on;ftag=v3rpgKD64K2me;dlg=1b3.4591f441>.
>
> Route: 
> <sip:aaa.bbb.ccc.77:5002;transport=tcp;lr;r2=on;ftag=v3rpgKD64K2me;dlg=1b3.4591f441>.
>
> Max-Forwards: 70.
>
> From: "0123456789" <sip:0123456789 at 172.25.0.25>;tag=v3rpgKD64K2me.
>
> To: 
> <sip:9876543210 at blfkfmne406w.zaark.com>;tag=3Gwq-SQeo2nkmHWzeMGXPMJbWjv1UqxR.
>
> Call-ID: 6d8b0c06-5b00-1238-3aa8-fa163e0144b5.
>
> CSeq: 10197616 ACK.
>
> Contact: <sip:gw+device at 172.25.0.25:5060;transport=udp;gw=device>.
>
> Content-Length: 0.
>
> .
>
> Our script in this case basically only have 3 steps has_to(), 
> loose_route() and t_relay()
>
> AFAIK this packed should be routed to our edge proxy on 172.25.0.21 
> which has the public IP aaa.bbb.ccc,  but what happens is that it 
> routes to the 2nd Route header and drops the first:
>
> U 2019/09/26 13:00:22.614870 172.25.251.4:5060 -> aaa.bbb.ccc.77:5002 #32
>
> ACK 
> sip:c22c11d0-7961-48c6-a603-e3d1872a462a at 95.195.215.15:56188;transport=TCP;ob 
> SIP/2.0.
>
> Via: SIP/2.0/UDP 172.25.251.4:5060;branch=z9hG4bK1d62.29103862.3.
>
> Via: SIP/2.0/UDP 
> 172.25.0.25;received=172.25.0.25;rport=5060;branch=z9hG4bK26XN3DN58vg6e.
>
> Route: 
> <sip:aaa.bbb.ccc.77:5002;transport=tcp;lr;r2=on;ftag=v3rpgKD64K2me;dlg=1b3.4591f441>.
>
> Max-Forwards: 69.
>
> From: "0123456789" <sip:0123456789 at 172.25.0.25>;tag=v3rpgKD64K2me.
>
> To: 
> <sip:9876543210 at blfkfmne406w.zaark.com>;tag=3Gwq-SQeo2nkmHWzeMGXPMJbWjv1UqxR.
>
> Call-ID: 6d8b0c06-5b00-1238-3aa8-fa163e0144b5.
>
> CSeq: 10197616 ACK.
>
> Contact: <sip:gw+device at 172.25.0.25:5060;transport=udp;gw=device>.
>
> Content-Length: 0.
>
> This used to work in an older setup with Opensips running 2.1, so not 
> sure if I’m doing something wrong here.
>
> Any hints are appreciated
>
> Thanks in advance / Olle
>
>
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