Works on Chrome, but can't establish connection on Firefox

[KawaiiFiveO]

network.websocket.allowInsecureFromHTTPS is already set to true.

Running Waterfox 2020.04 (64-bit).

"It seems the DPS is not running on port 6680."

However the DPS is already enabled and is working fine for the same script on Chrome.

[KawaiiFiveO]

Update: tested on Firefox latest version (76.0) and the same issue still exists.

[Jinzulen]

To be honest, I'm not sure why this is happening, I haven't had this problem with Firefox at the time of release and I'm not sure what changed since then that would cause Firefox to mess up websockets, none of the sources I found documenting similar issues were helper either, and that goes for the official Mozilla documentation too.

I tried to circumvent this issue using a less direct approach but to no avail, unfortunately; seems that for now at least, this script is dead on Firefox and its forks.