Building a real-time communication application with PeerJS

Now, we can do the same, but with the help of the PeerJS library. In the previous example, you may notice that we can do a call only between two peers. In the following example, we will show you how we can initiate a call between more than two peers.

PeerJS is a wrapper for the browser's WebRTC implementation. It is aimed to simplify the peer-to-peer connection management. PeerJS provides a functionality to list the connected clients.

Server side

We will create a simple Node.js application with peer module. For example, we will add two modules: peer and ip. We can do this with the following commands:

$ npm install peer --save
$ npm install ip --save

After this installation, the package.json file might look like this:

{
  "name": "pumpidu-peerjs",
  "version": "0.0.0",
  "description": "Run a PeerJS WebRTC server",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": ...