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Node.js introduction Yusuke Shinozaki @bad_at_math

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ࣗݾ঺հ ˎུˎ

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͓͸ͳ͢͠Δ͜ͱ ͳͥ/PEFKTʁ Πϯετʔϧˍϓϩάϥϛϯά ςετΛ࢖ͬͯΒͪ͘Μʹ ֦ுͰύϫϑϧʹ

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४උͰ͖ͨʁ

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/PEFKTͱ͸7ͱ͍͏(PPHMFࣾ੡+BWB4DSJQU ΤϯδϯΛར༻ͨ͠ɺΠϕϯτۦಈ͔ͭϊϯϒ ˎཧ࿦͸ུˎ /PEFKTͱ͸Կ͔ ˎ΋͠ˎڵຯ͕͋Ε͹ IUUQEIBUFOBOFKQCBEBUNBUI

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ͳͥ/PEFKTʁ ίΠπͷυί͕ ͍͍͔ͬͯʁ

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ͳͥ/PEFKTʁ ͪΐͬͱલ·Ͱ )5.-ͷϨϯμϦϯά͸ 1)1΍3BJMT SVCZ ͳͲ ͕୲͏ྖҬ

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ͳͥ/PEFKTʁ ࠷ۙͷ͓࿩ "KBYͷ׆༻΋ਐΜͰ͖ͨ

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ͳͥ/PEFKTʁ ࠷ۙͷ͓࿩ )5.-ͷϨϯμϦϯά͸ ΫϥΠΞϯτʢϒϥ΢βʣ Ͱ΍ͬͪΌ͏ɻ

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ͳͥ/PEFKTʁ ࠷ۙͷ͓࿩ έʔλΠͩͱ௨৴͸ +40/͚ͩͷ৔߹΋

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ͳͥ/PEFKTʁ ΑΓଟ਺ͷΫϥΠΞϯτ ΁ͷରԠ͕ٻΊΒΕΔ ࠷ۙͷ͓࿩

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ͳͥ/PEFKTʁ Ͱɺ ܰྔ͔ͭߴੑೳͳ"1* αʔόͷग़ݱ͕଴ͨΕͨ

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ͳͥ/PEFKTʁ ͦΜͳ࣌ʹ ઈົͳλΠϛϯάͰ /PEFKT͕ग़ݱ

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ͳͥ/PEFKTʁ /PEFͷੑೳ ଟ਺઀ଓ࣌ͷੑೳΑ͠ $16ɺϝϞϦʹ΋༏͍͠

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ͳͥ/PEFKTʁ ͔͠΋ +BWB4DSJQUͰॻ͚ͪΌ͏

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ͳͥ/PEFKTʁ ͍͍Μ͡ΌͶʁ

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·ͣॳΊʹͩͳ Πϯετʔϧ

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Πϯετʔϥ όʔδϣϯ ؅ཧγεςϜ ίϯύΠϧ Πϯετʔϧ

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Πϯετʔϧ ൺֱ ։ൃ؀ڥ Πϯετʔϧ ϥΠϒϥϦ Πϯετʔϧ /PEF Πϯετʔϧ Πϯετʔϥ όʔδϣϯ ؅ཧγεςϜ ίϯύΠϧ ͜Ε͚ͩ Πνόϯ؆୯ʂ

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Πϯετʔϧ Ͱ΋ͳɺΠϯετʔϥ ࢖͏ͱ࢖͑ͳ͍αʔυ ύʔςΟϞδϡʔϧ΋ ͋ΔΜͩɻೖ໳ऴ͑ͨΒ ։ൃ؀ڥͷߏஙʹ τϥΠʂ

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ϓϩάϥϛϯά ॳΊͯͷΞϓϦ

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var http = require('http'); var server = http.createServer(function(req,res){ ! res.writeHead(200, {"Content-Type": "text/plain"}); ! res.end('Hello World'); }); server.listen(9000, function(){ ! server.on('connection', function(socket){ ! ! console.log('client connected'); ! }) }); )FMMP8PSME͔Β ϓϩάϥϛϯά

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var http = require(‘http’); ·ͣ͸̍ߦ໨ ϓϩάϥϛϯά

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http://nodejs.jp/nodejs.org_ja/api/http.html ϚχϡΞϧΛௐ΂Δ ϓϩάϥϛϯά

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ϓϩάϥϛϯά SFRVJSF

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Ϟδϡʔϧʁ ϓϩάϥϛϯά

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ίΞϞδϡʔϧ ϓϩάϥϛϯά

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http.createServer(function(req,res){ Α͏΍࣍͘ͷߦ΁ʂ ϓϩάϥϛϯά

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http.createServer(function(req,res){ ؔ਺ͷҾ਺ʹ͍ͭͯ ϓϩάϥϛϯά

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ϓϩάϥϛϯά server.listen(9000, function(){ MJTUFOͬͯͳΜͧʁ

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ϓϩάϥϛϯά MJTUFOͬͯͳΜͧʁ server.listen(9000, function(){

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server.on(‘connection’, function(sock){ ϓϩάϥϛϯά PO ͱΠϕϯτ

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ϓϩάϥϛϯά PO ͱΠϕϯτ

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ϓϩάϥϛϯά PO ͱΠϕϯτ

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ϓϩάϥϛϯά PO ͱΠϕϯτ

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Ҿ༻͠·͘Γ αʔηϯ

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ϓϩάϥϛϯά ϓϩάϥϜͷ࣮ߦ

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͍·ͦ͜ɺΞΠπͱ ༑ୡʹͳΔνϟϯε

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No content

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J1BE͡Όͳ͍Αʁ

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ʼʊ ΞϓϦέʔγϣϯϢʔςΟϦςΟλʔϛφϧBQQ λʔϛφϧ͞· Կ͔༻ʁ

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ʼʊ ୭͕ΩϞ͍ͬͯʁ

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IUUQDJP Ͱ΋ࠓͳΒ $MPVEͬͯͷ͕ ͋Γ·ͯ͠

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ͦͬͪΛ࢖͏ͷ ΋ָͪΜ͔΋

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ςετͰָΛ͢Δ ςετΛݏ͏ͷ͸ খֶੜ·Ͱͩͬʂ

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var http = require('http'); var server = http.createServer(function(req,res){ ! res.writeHead(200, {"Content-Type": "text/plain"}); ! res.end('Hello World'); }); server.listen(9000, function(){ ! server.on('connection', function(socket){ ! ! console.log('client connected'); ! }) }); ॻ͘ ςετ͢Δ मਖ਼͢Δ ϒϥ΢βͰςετ ςετͰָΛ͢Δ αʔόىಈ ʼʊ

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/PEFͰςετ ॻ͘ ࣗಈςετ मਖ਼͢Δ αʔόىಈ ʼʊ ςετͰָΛ͢Δ var http = require('http'); var server = http.createServer(function(req,res){ ! res.writeHead(200, {"Content-Type": "text/plain"}); ! res.end('Hello World'); }); server.listen(9000, function(){ ! server.on('connection', function(socket){ ! ! console.log('client connected'); ! }) });

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var http = require('http'); var cnt = 0; var logm = function(str){ console.log('\033[32m S: ' + str + '\033[39m'); }; var server = exports.server = http.createServer(function(req,res){ logm('transmitting response header'); res.writeHead(200, {"Content-Type": "text/plain"}); logm('transmitting response body'); res.end('Hello World'); }); server.on('connection', function(socket){ cnt++; logm('client connected'); logm('sum: '+cnt); }); /* 3rd party modules */ var hello = require('./mod_server'); /* standard modules */ var http = require('http'), assert = require('assert'); /* config */ var PORT = 9000, options = { host: 'localhost', port: PORT, path: '/', method: 'GET' }; /* variables */ var server_response = ''; /* functions */ var logm = function(str){ // yellow console.log('\033[33m C: ' + str + '\033[39m'); }; /* * Error log */ var loge = function(str){ // cyan console.error('\036[33m CError: ' + str + '\033[39m'); }; /* code starts here */ hello.server.listen(PORT, function(){ console.log('starting server kicking by client'); /* using http.get() is more easier */ var req = http.request(options, function(res){ logm('status: '+res.statusCode); assert.equal(200, res.statusCode, 'status code should be 200'); res.on('data', function(chunk) { logm('body: '+chunk); server_response += chunk; }); res.on('end', function(){ logm('server response ended'); hello.server.close(); }); }); //.on('error', function(e){console.error('>>>>');}).end(); req.end(); req.on('error', function(e){ loge('an error occured: '); loge(e); }); }); /* assert response */ process.on('exit', function(){ assert.equal('Hello World', server_response); console.log('\033[7m test passed \033[27m'); }); ςετͰָΛ͢Δ ղઆʂ

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ςετͰָΛ͢Δ ίʔυΦΩό IUUQTHJTUHJUIVCDPN IUUQTHJTUHJUIVCDPN

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ςετͰָΛ͢Δ ࠓճͷςετର৅ αʔό ΫϥΠΞϯτ εςʔλείʔυ ϨεϙϯεϘσΟ

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ςετͰָΛ͢Δ ςετର৅ assert = require('assert'); BTTFSUϞδϡʔϧɺ௒ॏཁʂ

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ςετͰָΛ͢Δ ςετର৅ /* code starts here */ hello.server.listen(PORT, function(){ console.log('starting server kicking by client'); ςετεΫϦϓτͷதͰαʔόΛىಈ

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ςετͰָΛ͢Δ ςετର৅ var req = http.request(options, function(res){ IUUQΫϥΠΞϯτͱͯ͠ϦΫΤετ͢Δ Ͳ͜ʹϦΫΤετ͢Δ͔͸PQUJPOTͷதͰࢦఆ

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ςετͰָΛ͢Δ ςετର৅ assert.equal(200, res.statusCode, 'status code should be 200'); ϨεϙϯεͷεςʔλείʔυΛBTTFSUFRVBM ͰνΣοΫ͢Δ

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ςετͰָΛ͢Δ ςετର৅ res.on('data', function(chunk) { logm('body: '+chunk); server_response += chunk; }); ϨεϙϯεϘσΟΛશͯ TFSWFS@SFTQPOTFʹ֨ೲ

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ςετͰָΛ͢Δ ςετର৅ /* assert response */ process.on('exit', function(){ assert.equal('Hello World', server_response); console.log('\033[7m test passed \033[27m'); }); ऴྃ࣌ʹϨεϙϯεϘσΟͷ಺༰ΛνΣοΫ

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ςετͰָΛ͢Δ ;ʔɺۃָۃָ

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֦ுͰύϫϑϧʹ શ։Ͱߦ͜͏θ

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http://npmjs.org/ ֦ுͰύϫϑϧʹ OQN(node package manager)

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ଞͷݴޠ $PSF module plugin library Node $PSF NPEVMF QBDLBHF ֦ுͰύϫϑϧʹ Node <3 modules

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֦ுͰύϫϑϧʹ Ϟδϡʔϧͷݟ͚ͭํ npm registry (search.npmjs.org)

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֦ுͰύϫϑϧʹ Ϟδϡʔϧͷݟ͚ͭํ node-toolbox (toolbox.no.de)

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֦ுͰύϫϑϧʹ Ϟδϡʔϧͷݟ͚ͭํ nipster (eirikb.github.com/nipster/)

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֦ுͰύϫϑϧʹ Ϟδϡʔϧͷݟ͚ͭํ *3$Ͱฉ͘ͷ΋ख OPEFKT

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֦ுͰύϫϑϧʹ Ϟδϡʔϧͷݟ͚ͭํ .-Ͱฉ͘ͷ΋खʢOPEFKT@KQʣ

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{ ! "name": "firstApp", ! "version": "0.0.1", ! "dependencies": { ! ! "express": "" ! } } ֦ுͰύϫϑϧʹ ϞδϡʔϧͷΠϯετʔϧํ๏ package.jsonϑΝΠϧΛॻ͘ npm installίϚϯυͰΠϯετʔϧ Φεεϝʂ

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IUUQFYQSFTTKTDPN ֦ுͰύϫϑϧʹ ࢖ͬͯΈΑ͏

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var app = exports.server = require('express').createServer(); app.get('/', function(req, res){ res.send('Hello World'); }); var http = require('http'); var server = exports.server = http.createServer(function(req,res){ res.writeHead(200, {"Content-Type": "text/plain"}); res.end('Hello World'); }); ֦ுͰύϫϑϧʹ ࢖ͬͯΈΑ͏

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/* 3rd party modules */ var hello = require('./mod_server2'); /* standard modules */ var http = require('http'), assert = require('assert'); /* config */ var PORT = 9000, options = { host: 'localhost', port: PORT, path: '/', method: 'GET' }; /* functions */ var logm = function(str){ // yellow console.log('\033[33m C: ' + str + '\033[39m'); }; /* * Error log */ var loge = function(str){ // cyan console.error('\036[33m CError: ' + str + '\033[39m'); }; var http_req = function(options, callback, close){ var server_response = ''; var req = http.request(options, function(res){ assert.equal(200, res.statusCode, 'status code should be 200, but got '+res.statusCode); res.on('data', function(chunk) { server_response += chunk; }); res.on('end', function(){ if(close){ hello.server.close(); } callback(server_response); }); }); req.end(); req.on('error', function(e){ loge('an error occured: '); loge(e); }); }; /* code starts here */ hello.server.listen(PORT, function(){ // 1st test options.path = "/"; http_req(options, function(res){ assert.equal(res, "Hello World"); }); // 2nd test options.path = "/hello"; http_req(options, function(res){ assert.equal(res, "Hello Hello"); }); // last test options.path = "/last"; http_req(options, function(res){ assert.equal(res, "Bye!"); }, 'close'); }); /* assert response */ process.on('exit', function(){ console.log('\033[7m test passed \033[27m'); }); var app = exports.server = require('express').createServer(); app.get('/', function(req, res){ res.send('Hello World'); }); app.get('/hello', function(req, res){ res.send('Hello Hello'); }); app.get('/last', function(req, res){ res.send('Bye!'); }); ֦ுͰύϫϑϧʹ ςετ͔Βॻ͍͍ͯ͘ͱָͪΜ

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͋ͱ͸Θ͔Δͳʁ Thanks!

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http://nodejs.jp/ ಡΜͩޙʹ/PEFKT Ϣʔβάϧʔϓͷ αΠτʹΞΫηε͢Δ ·Ͱ͕ೖ໳ฤͩͬʂ