Thank you for the input, shurrman! I don’t see that the error is that clear, it does not mention any port?
“Failed to upgrade websocket connection”
“‘upgrade’ token not found in ‘Connection’ header”
How does this tell me that it’s about the reverse proxy?
More importantly, how do I fix this? As stated, I have already port-forwarded 8065 and 8443 directly from my gateway to my server. Is that not it? What more is needed?
For reference, the reverse proxy I currently use is the “Application Portal” built into my Synology NAS. Is “websocket” something special, something different than HTTP(S) requests, that this reverse proxy application does not support?