Given all the Belchertown questions we get here, I finally got around to writing up a comprehensive howto for how to install, configure, and test that it works with full websockets support.
The toplevel README file gets you to the point where WeeWX+Belchertown are running without websockets. Then instructions then take you to a second file with how to reconfigure your setup to enable realtime weather updates via websockets.
Thanks to Gary Hammer for the help battling through this one and as another pair of eyes on documenting things.....