How to enable CORS?

Hi everybody, I have some code that runs as a cockpit plugin. I have a lot of calls to cockpit.spawn, which I want to replace by fetch calls. The problem is that the software running API is running on port 443, not 9090, so I get a big and red error message about CORS not enabled, I can check that response has Acces-Control-Allow-Origin set to mymachine:9090, in dev tools I did some googling and found that I would enable CORS by editing cockpit.conf and placing a `Origin = https://mymachine:9090 wss://mymachine:9090 https://mymachine` I tried that without success. I may be wrong here I'm running a Centos7 machine with cockpit 195, here is the content of my /etc/cockpit/cockpit.conf [WebService] Origin = https://192.168.123.2:9090 wss://192.168.123.2:9090 http://192.168.123.2 https://192.168.123.2 Any ideas? Best regards -- “If you're going to try, go all the way. Otherwise, don't even start. ..." Charles Bukowski