to run the app

npm i or yarn

cp .env.example .env

then

node server.js

For broadcaster screen: http://localhost:3000/?room_id=1&user_id=1

For viewer screen: http://localhost:3000/viewer.html?room_id=1&user_id=3

For viewer screen: http://localhost:3000/viewer.html?room_id=1&user_id=4

Packet: https://www.npmjs.com/package/wrtc

You can learn it from url: https://youtu.be/GMbdEnK8h3U

Thank you: Coding With Chaim