Yay! Looks like they fixed it. Now, it looks like it is a normal upgrade request so proxies, et al, should play nice. Yaaay!
WebSockets works best over SSL.
They introduced plenty of other crazy things.. but at least it works with proxies.
At least with hixie-76, connections would fail to connect if the intermediate proxies are not understanding WebSockets. Now, your connection will succeed, both client and server will believe they can successfully communicate, but communication will not work and die a slow timeout. Not very reliable, is it ?
* try websocket
* on failure, fallback to comet