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server.js
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server.js
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/*
* This file is for server initialisation
*/
// Dependencies
const http = require('http');
const https = require('https');
const url = require('url');
const StringDecoder = require('string_decoder').StringDecoder;
const fs = require('fs');
const router = require('./router').router;
const handlers = require('./router').handlers;
// All the server logic for both http and https server
function unifiedServer(req, res) {
// Get the url and parse it
const parsedUrl = url.parse(req.url, true);
// Get the path
const path = parsedUrl.pathname;
const trimmedPath = path.replace(/^\/+|\/+$/g, '');
// Get the query string as an object
const queryStringObject = parsedUrl.query;
// Get the HTTP method
const method = req.method.toUpperCase();
// Get the headers as an object
const headers = req.headers;
// Get the payload, if any
const decoder = new StringDecoder('utf-8');
let buffer = '';
req.on('data', (data) => {
buffer += decoder.write(data);
});
// Processing the request
req.on('end', () => {
buffer += decoder.end();
// Choose the handler this request should go to
let chosenHandler = router[trimmedPath] ? handlers[trimmedPath] : handlers.notFound;
// Construct the data object to send to the handler
const data = {
trimmedPath,
queryStringObject,
method,
headers,
payload: buffer
};
// Route the request to the handler
chosenHandler(data, (statusCode, payload) => {
statusCode = typeof(statusCode) === 'number' ? statusCode : 200;
payload = typeof(payload) === 'object' && payload !== null ? payload : {};
const payloadString = JSON.stringify(payload);
// Send the response
res.setHeader('Content-Type', 'application/json');
res.writeHead(statusCode);
res.end(payloadString);
// Log the response's payload
console.log(`Response's payload: `, payloadString);
});
});
}
// Init http server
const httpServer = http.createServer(unifiedServer);
// Init https server
const httpsServerOptions = {
'key': fs.readFileSync('./https/key.pem'),
'cert': fs.readFileSync('./https/cert.pem')
};
const httpsServer = https.createServer(httpsServerOptions, unifiedServer);
module.exports = {
httpServer,
httpsServer
};