Hi all. I make Ubuntu packages of the Nginx development releases, so if you want to try out the WebSocket proxying and you're using Ubuntu, these should make it pretty easy to do:

https://launchpad.net/~chris-lea/+archive/nginx-devel

I've written up a very quick tutorial on how to set things up here:

https://chrislea.com/2013/02/23/proxying-websockets-with-ngi...

Hope people find these useful.