https-relay.mjs

import https from 'https';
import request from 'request';
import fs from 'fs';
import bodyParser from 'body-parser';

var jsonParser = bodyParser()

const backend = {
  'proto': 'https',
  'host': 'your-instance-name.openai.azure.com'
}

// should match the https host you are planning to connect with
const sslOptions = {
  key: fs.readFileSync(process.env["CERTIFICATE_KEY"]),
  cert: fs.readFileSync(process.env["CERTIFICATE_CRT"]),
};

const server = https.createServer(sslOptions, (req, res) => {
  const url = backend["proto"] + '://' + backend["host"] + req.url;
  const headers = {
    ...req.headers,
    host: backend["host"]
  }


  const options = {
    url,
    headers,
    method: req.method,
  };

  if(req.method === 'POST') {
    console.log("POST CAUGHT")
    jsonParser(req, res, (error) => {
      console.log(req.body)
      options["body"] = JSON.stringify(req.body)
      relayRequest(req, res, options, req.body)
    })
  } else {
    relayRequest(req, res, options)
  }
});

function relayRequest(req, res, options, body) {
  console.log("\n\n\n# Options\n\n\n")
  console.log(options["url"])
  console.log(req.method)
  console.log(req.body)
  console.log(req)
  
  request(options)
    .on('error', (error) => {
      res.statusCode = 500;
      res.end('Error occurred while relaying request to the backend');
      console.log(error)
    })
    .on("complete", (resp, body) => {
      console.log("\n\n# RESPONSE\n\n")
      console.log(resp.toJSON())
    })
    .pipe(res); // this is the trick, pipe is directly...
}

// Start the server
const port = 44351; // Replace with your desired port number
server.listen(port, () => {
  console.log(`Server listening on port ${port}`);
});