Created
April 1, 2020 09:57
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Node_server_without_framework
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// https://developer.mozilla.org/en-US/docs/Learn/Server-side/Node_server_without_framework | |
const http = require('http'); | |
const url = require('url'); | |
const fs = require('fs'); | |
const path = require('path'); | |
const port = process.argv[2] || 9000; | |
http.createServer(function (req, res) { | |
console.log(`${req.method} ${req.url}`); | |
// parse URL | |
const parsedUrl = url.parse(req.url); | |
// extract URL path | |
let pathname = `.${parsedUrl.pathname}`; | |
// based on the URL path, extract the file extention. e.g. .js, .doc, ... | |
const ext = path.parse(pathname).ext||'.html'; | |
// maps file extention to MIME typere | |
const map = { | |
'.ico': 'image/x-icon', | |
'.html': 'text/html', | |
'.js': 'text/javascript', | |
'.json': 'application/json', | |
'.css': 'text/css', | |
'.png': 'image/png', | |
'.jpg': 'image/jpeg', | |
'.wav': 'audio/wav', | |
'.mp3': 'audio/mpeg', | |
'.svg': 'image/svg+xml', | |
'.pdf': 'application/pdf', | |
'.doc': 'application/msword' | |
}; | |
fs.exists(pathname, function (exist) { | |
if(!exist) { | |
// if the file is not found, return 404 | |
res.statusCode = 404; | |
res.end(`File ${pathname} not found!`); | |
return; | |
} | |
// if is a directory search for index file matching the extention | |
if (fs.statSync(pathname).isDirectory()) pathname += '/index' + ext; | |
// read file from file system | |
fs.readFile(pathname, function(err, data){ | |
if(err){ | |
res.statusCode = 500; | |
res.end(`Error getting the file: ${err}.`); | |
} else { | |
// if the file is found, set Content-type and send data | |
res.setHeader('Content-type', map[ext] || 'text/plain' ); | |
res.end(data); | |
} | |
}); | |
}); | |
}).listen(parseInt(port)); | |
console.log(`Server listening on port ${port}`); |
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