[SR-Users] Issues with TOPOS when not relaying an in-dialog request

[Henning Westerholt]

Hello,

Others might be able to comment in more detail, but quick question: which version of Kamailio you are using?
For 5.5.x branch some extensions were added to the topos module for SUBSCRIBEs:

+                This module is designed to work for presence (SUBSCRIBE-based) dialogs too.
+               The REGISTER and PUBLISH requests are skipped from processing

Cheers,

Henning

--
Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com<https://gilawa.com/>

From: sr-users <sr-users-bounces at lists.kamailio.org> On Behalf Of Marrold
Sent: Wednesday, August 4, 2021 10:15 PM
To: Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
Subject: [SR-Users] Issues with TOPOS when not relaying an in-dialog request

Hi,
I am currently using TOPOS to make Kamailio behave more like a B2BUA from the clients perspective. It's working well, however I have discovered a scenario where it fails.
To aid with some interoperability I am sending (sl_send_reply) 200 OK to an in-dialog SUBSCRIBE request during a call. Once this has happened, the subsequent BYE from the B leg goes to the incorrect (Private) IP. If I disable this SUBSCRIBE, or relay it to the B leg, the BYE goes to the expected IP address.

Does anyone know where I am going wrong? I have tried not calling record_route() for these messages but the result is the same.

I've attached the ladder diagram of the call below. Note the subscribe is not relayed in this scenario.

Thanks!



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