This is a example of how to utilize WebRTC to do peer to peer voice and video chatting between two or more people.

This example uses node.js and socket.io to create a "Signaling Server", which runs on (or near) your web server to manage who should talk to who. The purpose of the signaling server is to relay information between peers while you are setting them up to talk directly to each other.

Included is client.html which contains all of the logic to connect to the signaling server, join a virtual group chat channel, connect with peers, and stream video and audio to all party members using the raw WebRTC API.

You'll need to install node.js as well as the express and socket.io libraries:

npm install -g socket.io express

Then simply run the signaling server:

node signaling-server.js

You'll also probably want to host client.html on a web server somewhere. You'll need to edit client.html and change YOURSERVERNAMEHERE to be the hostname or IP of the signaling server.

Note: you can also simply open the file locally instead of using a web server, but at the time of writing this only firefox will let you access the webcam/microphone from a file hosted off of your local machine.

Now navigate to wherever you stuck client.html and you should be presented with a dialog asking permission to access your microphone / webcam. Once accepted, you should see a local stream appear on the page. Now open up the same page in another browser, on the same computer or another, and watch as the magic of WebRTC takes effect and both images and audio samples mysteriously move from one browser to the other. Repeat with as many browsers as you dare.