Why do we need products like Pusher and Socket.io to establish a websocket connection?

Why do we need products like Pusher and Socket.io to establish a websocket connection?

laravel websocket socket.io vue.js pusher

laravel

http://localhost:8000/broadcasting/auth 404 (Not Found)

laravel laravel-5.3 pusher vuejs2 laravel-echo

laravel

Pusher Notification received by sender and working in Chrome only. Laravel 5.4 and JQuery

laravel laravel-5.3 laravel-5.4 pusher

laravel

Laravel /broadcasting/auth Always Fails With 403 Error

php laravel pusher laravel-echo

laravel

Trigger an event to private channel in react app

reactjs laravel react-native real-time pusher

laravel

Laravel Pusher Websocket Not Working on HTTPS

php laravel websocket pusher pusher-js

laravel

Real time react web app with pusher and laravel

reactjs laravel pusher

laravel

Laravel broadcasting auth route simply returns "true"

php laravel laravel-5.3 pusher

laravel

How to troubleshoot Laravel Broadcasts + Pusher..?

laravel laravel-5.6 pusher laravel-echo

laravel

Laravel pusher Illuminate \ Broadcasting \ BroadcastException No message

laravel pusher broadcasting

laravel

laravel event not send to pusher

php laravel pusher

laravel

Laravel/Composer getting "Could not scan for classes inside" for package

laravel composer-php pusher

laravel

Laravel Pusher Presence Channel Auth error

laravel pusher

laravel

Laravel Event Broadcast not work with pusher

laravel events pusher broadcasting

laravel

Laravel Event exceeds Pusher allowed limit

laravel events serialization limit pusher

laravel