QuickBooks Web Connector and subdomains

You don't have to use SSL/TLS (HTTPS) when testing against the QuickBooks Web Connector. You can just use something like http://localhost or basically some URL with localhost at the start e.g. http://localhost-qbsdk or if a subdomain like this http://localhost.localhost but this http://demo.localhost will not work. Again, it must have localhost right after the http://.