01_server.js

const fs = require('fs');
const https = require('https');

const options = {
	key: fs.readFileSync('key.pem'),
	cert: fs.readFileSync('cert.pem')
};

https.createServer(options, (req, res) => {
	res.writeHead(200);
	res.end('hello world\n');
}).listen(443);

02_server.js

ca: fs.readFileSync('chain.pem')

03_server.js

https.createServer(options, (req, res) => {
	res.writeHead(200, {
		"Strict-Transport-Security": "max-age=31536000"
	});
	res.end('hello world\n');
}).listen(443);

04_server.js

secureProtocol: "TLSv1_2_method"

05_server.js

ecdhCurve: 'secp384r1'

06_server.js

ciphers: "HIGH:!aNULL:!MD5:!3DES:!CAMELLIA:!AES128"

server.js

const fs = require('fs');
const https = require('https');

const options = {
	key: fs.readFileSync('key.pem'),
	cert: fs.readFileSync('cert.pem'),
	ca: fs.readFileSync('chain.pem'),
	secureProtocol: "TLSv1_2_method",
	ecdhCurve: 'secp384r1',
	ciphers: "HIGH:!aNULL:!MD5:!3DES:!CAMELLIA:!AES128"
};

https.createServer(options, (req, res) => {
	res.writeHead(200, {
		"Strict-Transport-Security": "max-age=31536000"
	});
	res.end('hello world\n');
}).listen(443);