PeerJS - Javascript

PeerJS is a simple yet powerful JavaScript library that enables peer-to-peer communication between browsers or nodes. It eliminates the need for a server to facilitate communication between two or more clients, making communication faster and more efficient.

Features

• Peer-to-peer communication without the need for a server
• Cross-browser and cross-platform compatibility
• Easy to set up and use
• Support for various data types, including audio and video streams
• Advanced features such as multiparty communication, binary data transfer, and more
• Fully open-source library

Getting started

Install

PeerJS can be easily installed using NPM or included as a script in your HTML file.

npm install peer

<script src="https://cdn.peerjs.com/peerjs.min.js"></script>

Usage

To use PeerJS, you need to create a Peer instance in your application.

const peer = new Peer();

Once you have a Peer instance, you can connect to other peers using their ID.

const conn = peer.connect('some-other-peer-id');

You can also receive connections from other peers using the on method.

peer.on('connection', (conn) => {
  // Handle incoming connection
});

To exchange data with other peers, you can use the send method on the connection object.

conn.send('Hello World!');

Advanced features

PeerJS comes with advanced features such as multiparty communication, binary data transfer, and more. Here is an example of how to use multiparty communication.

const room = peer.joinRoom('my-room-name');

room.on('open', () => {
  console.log('Room opened');
});

room.on('peerJoin', (peer) => {
  console.log('Peer joined:', peer);
});

room.on('peerLeave', (peer) => {
  console.log('Peer left:', peer);
});

room.on('data', (data) => {
  console.log('Data received:', data);
});

room.send('Hello World!');

Conclusion

PeerJS is a powerful library that enables peer-to-peer communication in the browser or NodeJS environment. It's easy to set up, fully open-source, and comes with advanced features to handle complex use cases. Whether you're building a real-time chat application or a multiplayer game, PeerJS can help you achieve your goals.