express enable https code example

Example: express http to https

var express = require('express');var app = express(); var redirectToHTTPS = require('express-http-to-https').redirectToHTTPS // Don't redirect if the hostname is `localhost:port` or the route is `/insecure`app.use(redirectToHTTPS([/localhost:(\d{4})/], [/\/insecure/], 301)); app.get('/', function (req, res) {  res.send('Hello World!');}); app.get('/insecure', function (req, res) {  res.send('Dangerous!');}); app.listen(3000, function () {  console.log('Example app listening on port 3000!');}); app.listen(8080, function () {  console.log('Example app listening on port 8080 insecurely!');});