Change SSL/TLS encryption mode to Off, but cloudflared access tcp --hostname http://keyshot-restful.spykar2024.cloudns.ch/ ... kept telling me the TLS handshake have failed.
Setting hostname of cloudflared to http, but it kept validating the TLS infomation.
I’ve found out that if I use Internet Explorer to view the http page, every thing is OK. However, I’ve tried to force cloudflared.exe to use the http connection (ws connection) instead of https connection (wss connection) in order not to validate the certificate, but I failed.
You will need contact ClouDNS, about their delegation mess, if you want to have any kind of success with their “*.cloudns.*” (sub-)domains, using other name servers than ClouDNS’s own.