Heroku - Socket.IO Client Always Connects To Localhost
This works for me if I use for client:
const socketURL = process.env.NODE_ENV === 'production' ? window.location.hostname : 'https://localhost:5000';const socket = io.connect(socketURL, {secure: true});
Your website runs on https, but socket on http. Use a secure URL for your initial connection, i.e. instead of "http://" use "https://"
var socket = io.connect('https://test.herokuapp.com', {secure: true});Or open your website at http://test.herokuapp.com (without ssl)