ERR_CONNECTION_TIMED_OUT when trying to connect to node.js server

Hi,

I am having trouble with clients connecting to node.js server, specifically when using the Chatroom module.

The nodejs module and server versions are compatible (according to the nodejs module releases page). Also, I checked the node.js server and it is running correctly (socket.io.js can be accessed and drupal status report). However, when on a page where Chatroom is on, I am getting this error in the Chrome console:

GET https://tapchat2-breathalert.rhcloud.com:8080/socket.io/?EIO=3&transport... net::ERR_CONNECTION_TIMED_OUT socket.io.js:3511

Versions:
Drupal 7.41
Nodejs 7.x-1.12
Nodejs server 1.0.9

Hosting:
Drupal site (HTTPS) on siteground.com
Node.js Node.js server on openshift.redhat.com (shared)

nodejs.config file:

settings = {
  scheme: 'http',
  port: 8080,
  host: process.env.OPENSHIFT_NODEJS_IP || '127.0.0.1',
  resource: '/socket.io',
  serviceKey: 'key',
  backend: {
    port: 80,
    host: 'tapcreative.services',
    scheme: 'https',
    basePath: '',
    messagePath: '/nodejs/message'
  },
  debug: true,
  sslKeyPath: '',
  sslCertPath: '',
  sslCAPath: '',
  baseAuthPath: '/nodejs/',
  extensions: [],
  clientsCanWriteToChannels: false,
  clientsCanWriteToClients: false,
  transports: ['websocket', 'polling', 'xhr-polling'],
  jsMinification: true,
  jsEtag: true,
  logLevel: 1
};

I have been working on this for too long and am desperate for and appreciate any suggestions on what to do.

Thanks,
Peide