With topoh enabled I have:

Route: sip:10.56.42.37:5070;lr;ftag=IpXq-LwNvJF6WrkOcmZNf9WjmGjK5dUv;did=90c.1132;vsf=AAAAAAAAAAAAAAAAAABlY2Bmf359HGJ6cX8bc3h9OjUwNjA7dXNlcj1waG9uZQ--;vst=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAgEAAgcAAAABAAAAAAAAAAAAAAAA Route: sip:TEST.MSS.LIFE.COM:5060;transport=UDP;lr

But with topos enabled I have:

Route: sip:TEST.MSS.LIFE.COM:5060;transport=UDP;lr,sip:10.56.42.37:5070;lr;ftag=EN0cvoXXCOgdGoO2zizq-WNmE4Enf4Nt;did=434.5ce1;vsf=AAAAAAAAAAAAAAAAAABlY2Bmf359HGJ6cX8bc3h9OjUwNjA7dXNlcj1waG9uZQ--;vst=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAgEAAgcAAAABAAAAAAAAAAAAAAAA

And kamailio trying to send ACK to TEST.MSS.LIFE.COM:5060

After this patch Route header are restores in from:

Route: sip:10.56.42.37:5070;lr;ftag=EN0cvoXXCOgdGoO2zizq-WNmE4Enf4Nt;did=434.5ce1;vsf=AAAAAAAAAAAAAAAAAABlY2Bmf359HGJ6cX8bc3h9OjUwNjA7dXNlcj1waG9uZQ--;vst=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAgEAAgcAAAABAAAAAAAAAAAAAAAA Route: sip:TEST.MSS.LIFE.COM:5060;transport=UDP;lr

Now ACK are routed correctly. You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/1124

-- Commit Summary --

* topos: correct order of Route header after restoring from b_rr

-- File Changes --

M src/modules/topos/tps_msg.c (2)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/1124.patch https://github.com/kamailio/kamailio/pull/1124.diff