The short version: set your http_version app parameter to "1.1" and then it will just work (this could well be our default at some point).
In celebration, there is a new Clickstart available which shows off WebRTC (real time chat, using websockets, text, voice and video ! Need a very modern browser). Something fun to play with - you can make your own Chatroullette ! **
** Please don't !
Thanks to Daniel Kutik (@danielkutik) for doing this Clickstart - there is more work in the pipeline to make it work with mobile browsers and more (watch this space).