Installing SSL in NodeJS (didn't send any data, ERR_EMPTY_RESPONSE) - php

Question

I have downloaded a SSL certificate that I have recieved from app.zerossl.com and placed it in the same directory as my main node script; and have used this code to install it.
var fs = require('fs');
let options = {
cert: fs.readFileSync(__dirname + '/certificate.crt'),
ca: fs.readFileSync(__dirname + '/ca_bundle.crt'),
key: fs.readFileSync(__dirname + '/private.key')
};
My configuration for running the server is the following:
var express = require('express');
var app = express();
var server = require('https').createServer(options, app);
var io = require('socket.io')(server);
Now i'm running MYSQL and PHP on XAMPP with the port set to 1337. In my modem i've set the DMZ to my Computer/Servers' internal IP Address. When I try to access my domain over the internet it comes up with an error. (didn't send any data, ERR_EMPTY_RESPONSE) assumingly from my Node JS server.
Now when I go on the https version of my website using the address bar, it comes up with a warning then redirects to my XAMPP server. The port is not set on the address bar, so i'm not sure why it's redirecting to the XAMPP server.
I'm wondering why isn't my SSL working and why is it redirecting to my XAMPP server instead of using the NodeJS server when I place in https?

Answer 1

Since you are running two servers and one public entry point, then you will need to use something like nginx to be able to access both from your external IP.
XAMPP is probably taking priority over the express server which is why is going there.
NOTE: If you are dealing with HTTPS, make sure to add router rule to utilize port 443.
Here are some docs on how to host two servers in one. In this case, it's two websites but you can change it to make it works for one website and one backend server since this is specifically for routing to different ports.
NOTE: You can skip server_name and just add the port forward in each configuration. This way you can have one port forward to 1337 for your xampp, and another port for your express server.
https://webdock.io/en/docs/how-guides/how-configure-nginx-to-serve-multiple-websites-single-vps#:~:text=If%20you%20are%20using%20a,to%20host%20all%20your%20domains.