Nodejs & Socket IO

Jose Chang

Nodejs

• Server side javascript• Event-driven• Non-blocking I/O

Nodejs sample

var http = require('http');var s = http.createServer(function (req, res) { res.writeHead(200, {'content-type': 'text/plain' }); res.end(‘hello world\n'); });s.listen(8083);

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Socket IO

Desktop:Internet Explorer 5.5+Safari 3+Google Chrome 4+Firefox 3+Opera 10.61+

Mobile:iPhone SafariiPad SafariAndroid WebKitWebOs WebKit

• A nodejs module• The cross-browser WebSocket for realtime

apps.

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Server.js: Client.html:

Socket IO sample

Ref: http://socket.io/

Demo

http://140.96.29.30/nodejs-svn/socketio/chatApp2/index.html

Auto generate key and pass key by URL parameter.

Connect

Index.html Phone.html?key=OOOOO

Connect Event with key

Event with key

Server.js

Reference• Learning

– DailyJS’s Node Tutorial– Mixu’s Node Book– Node Beginner Book – How To Node

• Framework– Express

• Testing– nodeunit

• Logging– Winston

• IDE– Nide– cloud 9

Thank you