Socket io - JSZurich

Socket.ioRealtime just got real.

Dienstag, 24. April 12

Dominique SandozStudent @UZH

Worker @vonwaldkirch

@streunerlein

The StoryThe tl;dr-section of this presentation

So why?

Socket.io

solves a problem

Socket.io

is for realtime exchange of data between Server and Client (Browser)

Realtime?

setInterval(check, 10)?

requestAnimationFrame()?

Real realtime.

Websockets!

Socket.io

Websocket wrapper

Node.js Module

A deeper look.

Socket.io

Socket between Server & Client

Send data from one to other

Receive data via events

asynchronous

A deeper look.

Socket.io

emit(event, data)

on(event, handler)

Easyness is easy.

Socket.io

Even Setup is easy!

Easyness is easy.

Socket.ioServer Setup

npm install socket.io

Socket.ioClient Setup

Socket.io

Compatibility

Scalability

Performance

Robustness

The Killers.

Socket.ioCompatibility

Websocket

Chrome 16, Firefox 11, IE 10, Safari 5. Opera 10

Built-in, disabled: Chrome 6, Firefox 4

Socket.ioCompatibility - Holy Fallbacks!

WebSocket

Flash Socket

AJAX long polling

AJAX multipart streaming

Forever IFrame

JSONP Polling

Socket.ioCompatibility - Holy Fallbacks!

Socket.io falls back to support

IE 5.5+Safari 3+ Chrome 4+ Firefox 3+ Opera 10+

Socket.ioScalability, Performance, Robustness

Use cases

Realtime Applications

Collaboration Software

Social Networks

Single-page Apps!

Every Project (?)

Hands-on!Demos.

#kthxbye

Socket.io official: http://socket.io/

Websocket overview: http://davidwalsh.name/websocket

Socket io - JSZurich

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