Ubuntu 18.04 LTS 서버에 Let's Encrypt 인증서 설치후, nodejs express 에서 , https 서버 만들기 (http 서버도 포함됨)

app.js

'use strict';
const fs = require("fs");
const http = require("http");
const https = require("https");
const express = require("express");

const app = express();  // https
const app2 = express();  // http

// yourdomain.com 은 실제로 사용중인 도메인으로 바꿔야함. -- Let's Encrypt 인증서 설치시 위치 사용.
const privateKey = fs.readFileSync("/etc/letsencrypt/live/yourdomain.com/privkey.pem", "utf8");
const certificate = fs.readFileSync("/etc/letsencrypt/live/yourdomain.com/cert.pem", "utf8")
const ca = fs.readFileSync("/etc/letsencrypt/live/yourdomain.com/chain.pem", "utf8")

const credentials = {
    key: privateKey,
    cert: certificate,
    ca: ca
};

const httpServer = http.createServer(app2);
const httpsServer = https.createServer(credentials, app);

// 80 port -- http
app2.get("/", (req, res) => {
    console.log("------ http get / -----" + (new Date()).toLocaleString());
    console.log("req.ip => " + req.ip);
    console.log("req.hostname => " + req.hostname);
    console.log(req.url);
    console.log(req.originalUrl);

    res.send("<h1>HTTP Server running on port 80</h1>");
})

// 3000 port -- https
app.get("/", (req, res) => {
    console.log("------ https get / -----" + (new Date()).toLocaleString());
    console.log("req.ip => " + req.ip);
    console.log("req.hostname => " + req.hostname);
    console.log(req.url);
    console.log(req.originalUrl);

    res.send("<h1>HTTPS Server running on port 3000</h1>");
})


httpServer.listen(80, () => {
    console.log((new Date()).toLocaleString());
    console.log('HTTP Server running on port 80');
})

httpsServer.listen(3000, ()=>{
    console.log((new Date()).toLocaleString());
    console.log(`HTTPS -- listening on port 3000 ...`);
})