We developed a simple peer-to-peer file-sharing application using the WebRTC DataChannel API. Using it, two peers can establish a direct connection between each other and send files to each other. You can choose just one file to transmit or you can select a list of files and they will be transmitted one by one.

You also got a brief practical introduction to the HTML5 File API and learned how to use it to work with the filesystem from JavaScript.

In the next chapter, we will delve deeply into the WebRTC API and develop an application that will be able to stream a prerecorded peer-to-peer video. This application will also be able to share a desktop to the remote peer.