Bonus points

1. Try out RTCDataChannel file sharing with Sharefest. When would RTCDataChannel need to provide reliable delivery of data, and when might performance be more important -- even if that means losing some data?
2. Use CSS to improve page layout, and add a placeholder attribute to the dataChannelReceive textarea.
3. Test the page on a mobile device.

Finally if you are having any difficulty with putting this session together have a look at complete Session 04 HTML.