[SR-Users] Record-route in dialog requests
Spencer Thomason
spencer at 5ninesolutions.com
Fri Oct 18 19:46:27 CEST 2013
Thanks Daniel,
That did the trick!
BR,
Spencer
On Oct 18, 2013, at 10:32 AM, Daniel-Constantin Mierla <miconda at gmail.com> wrote:
> Hello,
>
> On 10/18/13 7:25 PM, Spencer Thomason wrote:
>> Hello,
>> In our network topology we use Kamailio at the edge of our network proxying requests from a core set of FreeSWITCH servers.
>>
>> I have a new termination provider where a session timer ReINVITE fails because the ACK is sent to the contact address of the FreeSWITCH server, not the proxy. Can I Record-Route these in dialog requests? If so, where should I do it in the config?
>>
>> A quick google search returned this thread:
>> https://lists.cs.columbia.edu/pipermail/sip-implementors/2003-June/005089.html
>> which confused me a little.
> yes, you can re-enforce record route for requests within dialog, although not required by specs. See below the position.
>
>>
>>
>> My in dialog config block looks like this:
>> # Handle requests within SIP dialogs
>> route[WITHINDLG] {
>> if (has_totag()) {
>> # sequential request withing a dialog should
>> # take the path determined by record-routing
>> if (loose_route()) {
>
> Add it after the above line, like:
>
> record_route();
>
>> if (is_method("BYE")) {
>> setflag(FLT_ACC); # do accounting ...
>> setflag(FLT_ACCFAILED); # ... even if the transaction fails
>> setflag(FLT_SIPTRACE);
>> }
>> if (is_method("ACK")) {
>> # ACK is forwarded statelessy
>> route(NATMANAGE);
>> }
>> route(RELAY);
>> } else {
>> if ( is_method("ACK") ) {
>> if (t_check_trans()) {
>> # no loose-route, but stateful ACK;
>> # must be an ACK after a 487
>> # or e.g. 404 from upstream server
>> t_relay();
>> exit;
>> } else {
>> # ACK without matching transaction ... ignore and discard
>> exit;
>> }
>> }
>> sl_send_reply("404","Not here");
>> }
>> exit;
>> }
>> }
> Cheers,
> Daniel
>
> --
> Daniel-Constantin Mierla - http://www.asipto.com
> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
> Kamailio Advanced Trainings - Berlin, Nov 25-28; Miami, Nov 18-20, 2013
> - more details about Kamailio trainings at http://www.asipto.com -
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>
More information about the sr-users
mailing list