Basic HTTP / HTTPS server in Node w/ Express

server.js

const express = require("express")
const fs = require("fs")
const http = require("http")
const https = require("https")

// create a basic HTTP app that just redirects requests from HTTP to HTTPS
const httpApp = express()

httpApp.use((request, response) => {
  return response.redirect("https://" + request.hostname + request.url)
})

// create the main app
const mainApp = express()

// mainApp.get(...)
// mainApp.post(...)
// mainApp.use(...)
// etc.

const sslConfig = {
  key: fs.readFileSync("path/to/key.pem"),
  cert: fs.readFileSync("path/to/cert.pem"),
}

// set the HTTP app to listen on port 80
http.createServer(httpApp).listen(80)

// set the HTTPS app to listen on port 443
https.createServer(sslConfig, mainApp).listen(443)