How to open a http connection to RealVNC on port 5800 to session :0

Issue

• To be able to use our existing RHEL vnc installation in the estate (vnc-4.1.1-1 RealVNC Ltd) to server http requests from Firefox to open up the users Desktop session AND ideally to allow one additonal seesion for support use.
• The current setup causes the client to hang at X startup, which requires a restart of X and then to run the vncserver command manually to start up the session. That only opens a session for 5801:1, although once this session is open I can also connect to 5801:0 (the desktop users session) by changing the details in the vnc connection window.