Websockify has been accepted into Fedora. noVNC support is close:
As of now, I am just working on init scripts for the Openstack
For Java based servers, you are probably going to want to get a Java
based Websocket solution. The best bet is the Webscoekte support that
is going into Tomcat.
The appropriate JSR to monitor is JSR 356
which has A Red Hatter (Rémy) in
the expert group.