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Introduction to Node and its Core Modules
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aryoung
February 06, 2013
Programming
3
270
Introduction to Node and its Core Modules
From
http://bathcamp.org/
, February 6th 2013
aryoung
February 06, 2013
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Transcript
Introduction to Node Alex
Overview ‣ Brief
5 Years Ago... ‣ We
Thursday, 7 February 13
A
Node’s Strengths ‣ Network-oriented
Installation ‣ Wizards
Runtime Environment ‣ Every
Modules ‣ CommonJS
Core Modules ‣ Events,
"Node's
Why Bother? ‣ Events/streams
Streams var zlib = require('zlib').createGzip(); var fs = require('fs'); var
inp = fs.createReadStream('input.txt'); var out = fs.createWriteStream('output.txt.gz'); inp.pipe(gzip).pipe(out); Clean,
Events var util = require('util'); var events = require('events'); function
Player() { events.EventEmitter.call(this); } util.inherits(Player, events.EventEmitter); var player = new Player(); player.on('play', function(track) { console.log('[NP]:', track.title); }); player.emit('play', { title: 'Spit On A Stranger', artist: 'Pavement' }); Thursday, 7 February 13
Servers var net = require('net'); var server = net.createServer(function(c) {
console.log('server connected'); c.on('end', function() { console.log('server disconnected'); }); c.write('hello\r\n'); c.pipe(c); }); server.listen(8124, function() { //'listening' listener console.log('server bound'); }); Thursday, 7 February 13
HTTP Server var http = require('http'); var fs = require('fs');
http.createServer(function(req, res) { fs.readFile(__dirname + 'index.html', function(err, data) { if (err) { res.statusCode = 500; res.end(String(err)); } else { res.end(data); } }); }).listen(8000); Thursday, 7 February 13
HTTP Server var http = require('http'); var fs = require('fs');
http.createServer(function(req, res) { fs.readFile(__dirname + 'index.html', function(err, data) { if (err) { res.statusCode = 500; res.end(String(err)); } else { res.end(data); } }); }).listen(8000); Thursday, 7 February 13
HTTP Server var http = require('http'); var fs = require('fs');
http.createServer(function(req, res) { fs.readFile(__dirname + 'index.html', function(err, data) { if (err) { res.statusCode = 500; res.end(String(err)); } else { res.end(data); } }); }).listen(8000); Thursday, 7 February 13
HTTP Server var http = require('http'); var fs = require('fs');
http.createServer(function(req, res) { fs.readFile(__dirname + 'index.html', function(err, data) { if (err) { res.statusCode = 500; res.end(String(err)); } else { res.end(data); } }); }).listen(8000); Not
Streams with HTTP var http = require('http'); var fs =
require('fs'); http.createServer(function(req, res) { var stream = fs.createReadStream('index.html'); stream.pipe(res); }).listen(8000); Thursday, 7 February 13
Gzip for Free var http = require('http'); var fs =
require('fs'); var zlib = require('zlib'); http.createServer(function(req, res) { var stream = fs.createReadStream('index.html'); res.writeHead(200, { 'content-encoding': 'gzip' }); stream.pipe(zlib.createGzip()).pipe(res); }).listen(8000); Thursday, 7 February 13
Gzip for Free var http = require('http'); var fs =
require('fs'); var zlib = require('zlib'); http.createServer(function(req, res) { var stream = fs.createReadStream('index.html'); res.writeHead(200, { 'content-encoding': 'gzip' }); stream.pipe(zlib.createGzip()).pipe(res); }).listen(8000); How
TO-DO: Learn
The End http://www.flickr.com/photos/dunechaser/6884829633/ Thursday, 7 February 13