Demonstrate setting up an Express proxy server proxying to SSL site

server.js

const express = require('express');
const https = require('https');
const httpProxy = require('http-proxy');
const app = express();

// Omitted Code...

// Establish SSL Cert Info
// These files were generated using openSSL.
const ssl = {
  key: fs.readFileSync('./ssl/example.com.key', 'utf8'),
  cert: fs.readFileSync('./ssl/example.com.crt', 'utf8')
};

// Omitted Code...

const proxy = httpProxy.createProxyServer({
    // The agent attribute is necessary to reach backend server
    agent: new httpsProxyAgent('http://corporateproxy.example.com'), 
    headers: {
      host: 'example.com'
    },
    secure: true,
    // The ssl attribute is necessary if the backend server is SSL encrypted
    ssl: ssl,
    // The target attribute defines the backend server we are reaching
    target: 'https://example.com'
  });

  app.all('*', (req, res) => proxy.web(req, res));
  https.createServer(ssl, app).listen(process.env.listenPort);