A general presentation about WebSockets and why you should use them.

1. My Adventure
with
WebSockets

2. Michiel De Mey
Twitter: @michieldemey
Website: michieldemey.be

3. So, what are websockets?

4. “WebSocket is a web technology providing fullduplex communications channels over a single
TCP connection.
”

5. A few things you should know
You're sending messages
UTF-8 text or binary data
Messages from client to server are “obfuscated”
WebSockets automatically signal when the connection is
about to be terminated
Built-in heartbeating support
Not all browsers currently support the transfer of binary data

6. Why should you bother?

7. Two-way communication (full duplex)
Real-time data
No firewall getting in your way

8. The downsides
Your network has to be compatible with websockets.
Load balancers
HTTP Proxies
...

9. The lifecycle

12. My final project on
websockets
The stack and stuff

13. High performant HTTP and reverse proxy server.
Running on Port 80
Proxying websockets on port 80 to port 8080
NOTE:
Websocket proxying requires Nginx 1.3.13
(Development version)

14. Module for Nginx to deploy Ruby on Rails apps.

15. Platform running on Google's V8 JavaScript engine.
Used to build fast and scalable network applications.

16. Node.js package that makes real-time apps possible in every
browser and device.
Server running on port 8080
Falls back to different transport mechanisms
Server kept running using forever

17. CoffeeScript is a little language that compiles into JavaScript.
Both the websocket server and the client are written in
CoffeeScript.

18. Demo

19. Thank you
Twitter: @michieldemey
Artwork by Jorge Jacinto
http://blinck.deviantart.com/