Issues with RTCDataChannel API

[danielwegener]

Hi folks,

I just tried to migrate my data-channel playground app to current 0.9.0-SNAPSHOT using WebRTC API provided by #203 and found some small issues:

• RTCPeerConnection.createDataChannel is not callable, its missing its RTCDataChannelInit parameter
• RTCPeerConnection.ondatachannel does not emit an RTCDataChannelEvent, so one can not react on data channels requested by the peer.
• some properties on RTCPeerConnection are val but their value change over time. Wonder if it would make more sense to expose them as def.

[sjrd]

some properties on RTCPeerConnection are val but their value change over time. Wonder if it would make more sense to expose them as def.

Yes, they should be defs in this case!