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Socket io. Learn how to harness real-time communication on the web. W/Cluster Module, React and a real time game!
What you’ll learn
Socketio. That’s (mostly) all we cover so when you finish, you’ll know it!
Setup a socketio application between the browser and an Express server and run real-time back and forth
Understand the basics of websockets and how they work
The basics of the transport layer and how a packet works
May 2023: Version 4 update is complete. I have left the v2 sections up for a sunset period. This means, at the moment, roughly half the course is the same content in different versions. Please take note of the section title if you are just starting out to make sure you are taking the version you want.
Websockets are one of the coolest api’s to ever hit the web. They allow the browser real-time communication, bridging one of the last gaps in both human and web-based communication. Socket io is the king library that uses websockets under the hood. There’s a good chance if you’re reading this, you’ve heard about socketio. Maybe even done a tutorial on it. But how far did you get? In my experience, the vast majority of the material on the web goes no farther than a quick-start, instant chat app. You don’t learn how anything works, never look at the docs, and are stuck at the end wondering what to do now. Is that all socketio can do? The remaining shred of material is waaaaay over everyone’s head. The fact that the websocket API was standardized in 2011 and most developers still don’t know how to use it is evidence of the gap.
I first used socketIO in 2013 for a tiny company directory app. I’ve been following since and have been frustrated that it hasn’t gotten more mainstream notice because it opens the way for so many improvements to existing applications and obvious groundwork for new ones. Let’s change that 🙂 Prepare to for a detailed look at socketio and websockets and start going real-time.
Introduction – course overview, github link, and the state of socketio and websockets
Before SocketIO… – TCP, network sockets, & a native websockets app
Socket.IO-101 – Why you’d want to use socketio (instead of just websockets), and how it works (simple chat app)
Socket.IO-201 – Making the chat app into a slack clone with namespaces and rooms
Project – real-time canvas game (agar.io-clone)
Project – Real-time performance data (uses React, Cluster, and the Cluster Module. Rotated Redis out until the new module is stable)
Supplemental – HTTP (for those in need of a review)
LEGACY – version 2 – Socket.IO-101
LEGACY – version 2 – Socket.IO-201
LEGACY – multi-player canvas game
LEGACY – Advanced Project
I hope to add sections for a streaming videos/socket.io-stream app, as well as a React Native app.
Who this course is for:
JS/Node developers who want to actually learn how to use Socketio for more than a chat app tutorial
JS developers interested in how node & JS combine to make the networking happen
Developers interested in building real time applications
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