RTCPeerConnection-v1.5.js, DataChannel.js, RTCMultiConnection.js, and more

RTCPeerConnection-v1.5.js, DataChannel.js, RTCMultiConnection.js, and
more

WebRTC DataChannel and Firefox:

https://github.com/muaz-khan/WebRTC-Experiment/wiki/WebRTC-DataChannel-and-Firefox#points

RTCPeerConnection-v1.5:
https://webrtc-experiment.appspot.com/video-conferencing/
https://webrtc-experiment.appspot.com/chat-hangout/
https://webrtc-experiment.appspot.com/file-hangout/

RTCMultiConnection:

https://googledrive.com/host/0B6GWd_dUUTT8RzVSRVU2MlIxcm8/RTCMultiConnection-v1.1

DataChannel:
https://googledrive.com/host/0B6GWd_dUUTT8RzVSRVU2MlIxcm8/DataChannel

Actually, Firefox changed their old RTCDataChannel implementation.
http://mozilla.github.com/webrtc-landing/DataChannel_changes.html

DataChannel.js supports fallback to websockets/socket.io or your
preferred signaling method.