Chapter 6. Adding File Sharing

This chapter shows you how to extend the video chat application we developed in the second and fourth chapters to add support for file sharing between the two users. After reading this chapter, you will have a clear understanding of:

• Extending the existing HTML for supporting file sharing

• Adding JavaScript for enabling file sharing

• Adding files through the standard file selector user interface

• Enabling users to drag-and-drop files into the browser window

• Adding JavaScript for transferring files over the WebSocket connection

• Extending the signaling server for supporting file transfer

• Sending thumbnails before sending the whole file

• Providing progress updates during the transfer

• Using RTCDataChannel connections between two users

• Adding JavaScript for transferring files over the RTCDataChannel connection

• Other file sharing related ideas and options