Introduction to Node and its Core Modules

From http://bathcamp.org/, February 6th 2013

Transcript

1. Introduction to Node Alex
2. Overview ‣ Brief
3. 5 Years Ago... ‣ We
4. Thursday, 7 February 13
5. A
6. Node’s Strengths ‣ Network-oriented
7. Installation ‣ Wizards
8. Runtime Environment ‣ Every
9. Modules ‣ CommonJS
10. Core Modules ‣ Events,
11. "Node's
12. Why Bother? ‣ Events/streams
13. 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,
14. 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
15. 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
16. 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
17. 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
18. 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
19. 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
20. 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
21. 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
22. 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
23. TO-DO: Learn
24. The End http://www.flickr.com/photos/dunechaser/6884829633/ Thursday, 7 February 13