Third lesson
Build a service that listen an http port (3000). When the browser call this route (http://localhost:3000), the service must send a "Hello www world". In order to accomplish this task, use node.js and express.
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Solving third lesson
'use strict'; var express = require('express'); var app = express(); app.get('/', function(req, res){ res.send('Hello www world.'); }); var server = app.listen(3000); console.log('Servidor Express iniciado na porta %s', server.address().port);
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