Hello, doesn't the ACK have a Route header for K1 and double Route headers for K2? K1 should use the first Route of K2 for routing, not the R-URI. Cheers, Daniel On 03/03/15 05:14, Kelvin Chua wrote: I have 2 kamailio servers and 1 asterisk server. 1. asterisk calls kamailio1 2. kamailio1 relays INVITE to kamailio2 3. kamailio2 relays INVITE to client registered using TLS 4. client answers with 200 OK, sends to kamailio2 5. kamailio2 relays 200 OK to kamailio1 6. kamailio1 relays 200 OK to asterisk 7. asterisk sends ACK to kamailio1 8. kamailio1 complains "forward_request(): forward_req: ERROR: cannot forward to af 2, proto 3 no corresponding listening socket" which is because 200 OK has a contact header with tls transport from client 9. call drops in 30 secs which is expected because client never received the ACK any ideas on a fix or workaround? Kelvin Chua _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing listsr-users@lists.sip-router.orghttp://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierlahttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda Kamailio World Conference, May 27-29, 2015 Berlin, Germany - http://www.kamailioworld.com _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

Hello, We need to review this in rr. Meanwhile you can use s.substr transformation to get whats after sips and prefix it with sip in r-uri. Cheers, Daniel On Tuesday, March 3, 2015, Kelvin Chua &lt;kelchy(a)gmail.com&gt; wrote: -- Daniel-Constantin Mierla - http://www.asipto.com http://twitter.com/#!/miconda - http://www.linkedin.com/in/micond <http://www.linkedin.com/in/miconda>

i was thinking of changing the record-route before sending out. I tried it, but it's not working subst_hf("Record-route", "/^<sips:1.2.3.4:6055 <http://1.2.3.4:6055>\(.*\)$/<sip:1.2.3.4:6055 <http://1.2.3.4:6055>\1/", "a"); Kelvin Chua On Wed, Mar 4, 2015 at 2:52 PM, Kelvin Chua &lt;kelchy(a)gmail.com <mailto:kelchy@gmail.com>> wrote: just an idea, will it work if i used subst_hf? Kelvin Chua On Tue, Mar 3, 2015 at 5:16 PM, Daniel-Constantin Mierla &lt;miconda(a)gmail.com <mailto:miconda@gmail.com>> wrote: Hello, We need to review this in rr. Meanwhile you can use s.substr transformation to get whats after sips and prefix it with sip in r-uri. Cheers, Daniel On Tuesday, March 3, 2015, Kelvin Chua &lt;kelchy(a)gmail.com <mailto:kelchy@gmail.com>> wrote: Found the problem, on the 200 OK, I have this record route list Record-Route: <sips:<K2 IP>:6056;transport=tls;r2=on;lr;ftag=as620b910c;did=242.fd92;nat=yes>. Record-Route: <sips:<K2 IP>:6055;r2=on;lr;ftag=as620b910c;did=242.fd92;nat=yes>. Record-Route: <sip:<K1 IP>:5080;lr=on;did=242.968> the second entry is wrong. it should be sip: and not sips: how can we force this? protocol pv is read-only Kelvin Chua On Tue, Mar 3, 2015 at 2:43 PM, Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; wrote: Hello, doesn't the ACK have a Route header for K1 and double Route headers for K2? K1 should use the first Route of K2 for routing, not the R-URI. Cheers, Daniel On 03/03/15 05:14, Kelvin Chua wrote: -- Daniel-Constantin Mierla http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/miconda Kamailio World Conference, May 27-29, 2015 Berlin, Germany - http://www.kamailioworld.com _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla - http://www.asipto.com http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/micond <http://www.linkedin.com/in/miconda>