I built release 1.9.4 with ./configure --enable-utf8 --enable-geoip=mmdb (as all the documentation indicates) and when enabling real-time-html it never connects and it always fails with "unable to authenticate websocket".
I noticed when using the version that RedHat installs (1.8.1) this does not happen.
I then tried version 1.9.3 and that also does not have an issue.
I then tried rebuilding release 1.9.4 and including --with-openssl and it still fails. I did not include ws-auth in the config as I don't need authorization right now as this is on an internal server.
The web server is behind a load balancer so I specified ws-url to go directly to the server:port