Playframework 2 Use websockets for binary transport

I would like to use websockets with playframework 2. One of my clients will be using flash. In the playframework 2, how can I use websockets with binary data (amf).

Could someone point me to some code that implements this, or at least an article that discusses this.

Here is one example of binary Websocket with Play 2.0: http://www.smartjava.org/content/binary-websockets-play-20-and-scala-and-bit-op-javacvopencv/

It is Scala code and it uses Iteratees.