Awesome
About
This project is still work in progress.
Other implementations
There are other SockJS implementations for Haskell (under construction), the two I know of are:
This project was originally fork of Yihuang's work (check out this branch). I have also toyed with Bitonic's code (check out this branch).
I have borrowed some of their ideas, but the project itself is a rewrite from the ground up.