Hello Daniel, I think your guess about failure_route is correct. Here is the related piece of config. Actually I can not find any append_branch() call in config (which is not originally developed by me). failure_route[1] { if (t_was_cancelled()) { exit; } if (t_check_status("408|403|404|488|480|415|50[0-4]")) { if (next_gw()) { t_on_failure("1"); route(6); } else { route(6); } } } route[6] { if (!t_relay()) { sl_reply_error(); } exit; } Cheers, Max. On Tue, Jul 19, 2011 at 3:37 PM, Daniel-Constantin Mierla <miconda(a)gmail.com

Hello Daniel, Where were my eyes?! Thank you for this. It works now. Max. On Wed, Jul 20, 2011 at 4:47 PM, Daniel-Constantin Mierla &lt;miconda(a)gmail.com > Hello, > > > On 7/19/11 12:10 PM, Max Doronin wrote: > > Hello Daniel, > > I think your guess about failure_route is correct. Here is the related > piece of config. Actually I can not find any append_branch() call in config > (which is not originally developed by me). > > failure_route[1] { > if (t_was_cancelled()) { > exit; > } > > if (t_check_status("408|403|404|488|480|415|50[0-4]")) { > if (next_gw()) { > t_on_failure("1"); > route(6); > } > else > { > route(6); > > you should not call route(6) in the above line, but rather exit -- there > was no next gw to try. > > Cheers, > Daniel > > } > } > } > > route[6] { > if (!t_relay()) { > sl_reply_error(); > } > exit; > } > > Cheers, > Max. > > On Tue, Jul 19, 2011 at 3:37 PM, Daniel-Constantin Mierla < > miconda(a)gmail.com> >> Hello, >> >> >> On 7/13/11 5:51 PM, Max Doronin wrote: >> >>> Hello guys, >>> >>> I have strange behavior on my Kamailio-1.5.1-notls instance. >>> >>> I have LCR and TM modules enabled.For a particular destination I have >>> 4 routes to try. When I call to non-existing number, it tries >>> - route 1 (404 Not Found) >>> - route 2 (404 Not Found) >>> - route 3 (503 Service unavailable) >>> >>> And the problem is with the last 503. >>> >>> Kamailio ACKs it, immediately drops these 2 lines into syslog >>> Jul 13 04:14:47 /usr/local/sbin/kamailio[23572]: >>> ERROR:tm:t_forward_nonack: no branch for forwarding >>> Jul 13 04:14:47 /usr/local/sbin/kamailio[23572]: ERROR:tm:w_t_relay: >>> t_forward_nonack failed >>> And sends >>> SIP/2.0 500 Server error occurred (19/SL). >>> To the call originator. >>> >>> 30 microseconds later it sends >>> SIP/2.0 500 Service Unavailable. >>> to the originator again >>> >>> Latter 500 looks like the relayed original "503 Service unavailable". >>> I think so because the Reason header is the same: >>> Reason: SIP;cause=503;text="Service >>> Unavailable";icodetext="NoCircuitAvailable";iintcode=10034;isubsystem=3. >>> >>> Obviously call is terminated. >>> >>> I noticed that that last peer rewrites my Via headers like this: >>> Original: >>> == >>> Via: SIP/2.0/UDP 187.45.214.132;branch=z9hG4bK3dac.fae9b793.2. >>> Via: SIP/2.0/UDP >>> 192.168.2.33:5622 >>> ;received=49.49.59.23;branch=z9hG4bK-d8754z-a6ba40014f97fb7c-1---d8754z-;rport=23832. >>> == >>> >>> Rewritten >>> == >>> Via: SIP/2.0/UDP >>> >>> 187.45.214.132;received=187.45.214.132;branch=z9hG4bK3dac.fae9b793.2,SIP/2.0/UDP >>> 192.168.2.33:5622;received=49.49.59.23;branch=z9hG4b >>> == >>> >>> I tried to modify via1_matching parameter (1 -> 0) but no changes. >>> >>> My questions are: >>> - What can be the reason of that 500 with 19/SL >>> - Can kamailio properly handle this 1 line Via header? >>> - What can be the reason of that "t_forward_nonack: no branch for >>> forwarding"? >>> >> >> it seems you try to forward one more time, but there is no new branch >> where to send. I guess there is some issue in the failure_route, like >> calling t_relay() even if the new branch is not added. If you can paste it >> here, I can tell more clear if something is wrong there. >> >> Cheers, >> Daniel >> >> -- >> Daniel-Constantin Mierla -- http://www.asipto.com >> Kamailio Advanced Training, Oct 10-13, Berlin: http://asipto.com/u/kat >> http://linkedin.com/in/miconda -- http://twitter.com/miconda >> >> > > > _______________________________________________ > 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 Mierla -- http://www.asipto.com > Kamailio Advanced Training, Oct 10-13, Berlin: http://asipto.com/u/kathttp://linkedin.com/in/miconda -- http://twitter.com/miconda > >