Hello all,

 

There is something I can’t understand using Kamailio as proxy to route SUBSCRIBE/NOTIFY dialogs between a client and a server

 

I do record_route() on the first SUBSCRIBE received by Kamailio

The next SUBSCRIBE is well handled by Kamailio in the [WITHIN_DIALOG] bloc but the 200/OK no more contains record-route header

So the 3^rd SUBSCRIBE no more sets a relevant route and Kamailio rejets it with a 404 ?

How to proceed so that 200/Ok within dialog still contains Record-route header ?

 

Here are the piece of routing logic involved

        if (is_method("PUBLISH|SUBSCRIBE")) {

                record_route();

  $ru = "sip:192.168.0.250:6070";

  route(RELAY);

  exit;

      }

And the as-is route[WITHINDLG] function

route[WITHINDLG] {

        if (has_totag()) {

                # sequential request withing a dialog should

                # take the path determined by record-routing

                if (loose_route()) {

#!ifdef WITH_WEBSOCKETS

                        if ($du == "") {

                                if (!handle_ruri_alias()) {

                                        xlog("L_ERR", "Bad alias <$ru>\n");

                                        sl_send_reply("400", "Bad Request");

                                        exit;

                                }

                        }

#!endif

                        route(RELAY);

                }

Thanks for your help

Olivier