WebRTC wssURL and ICE Setup

Question

I'm trying to build an app that will need to be able to connect multiple peers together over WebRTC.

I'm working from the example at: https://github.com/webrtc/apprtc

I'm stuck on how to setup what is needed for the following 4 lines of code:

  iceServerRequestUrl: '{{ ice_server_url }}',
  iceServerTransports: '{{ ice_server_transports }}',
  wssUrl: '{{ wss_url }}',
  wssPostUrl: '{{ wss_post_url }}',

That would be part of this section of loading parameters:

var loadingParams = {
  errorMessages: [],
  isLoopback: false,
  warningMessages: [],    
  mediaConstraints: {"audio": true, "video": {"optional": [{"minWidth": "1280"}, {"minHeight": "720"}], "mandatory": {}}},
  offerOptions: {},
  peerConnectionConfig: {"rtcpMuxPolicy": "require", "bundlePolicy": "max-bundle", "iceServers": []},
  peerConnectionConstraints: {"optional": []},
  iceServerRequestUrl: '{{ ice_server_url }}',
  iceServerTransports: '{{ ice_server_transports }}',
  wssUrl: '{{ wss_url }}',
  wssPostUrl: '{{ wss_post_url }}',
  bypassJoinConfirmation: false,
  versionInfo: {"gitHash": "06b18b54af995bab9e16c2648ddb7edbbe553541", "branch": "master", "time": "Mon Sep 14 17:52:24 2020 +0200"},

};

I understand that a web socket is needed, but I'm unsure how to set this up for a web app. I'm working with cPanel.

How do I set up the iceServerRequestUrl, iceServerTransports, wssUrl, and wssPostUrl?