[SR-Users] transport=ws causing kamailio to use wrong listen socket

Hi all,

We're hitting an issue while integrating secure websockets in our existing SIP infrastructure using Kamailio.

When the registration comes in, it causes an entry in our AOR table, with ";transport=ws" appended. When we want to send a message to this client (using t_relay), kamailio seems to take 'ws' as being *unsecure* websockets. In turn, this makes Kamailio try to send out the message using a TCP listener - while it should have picked the TLS listener.

There are some remarks in the sources about ws vs. wss, so i'm struggling to figure out where things go wrong. I've also created github issue #3340 with more details.

Any help would be appreciated. If this turns out to be a Kamailio bug, i'm happy to provide a patch.