title: Setting Google domains to use https
body: <p>I purchased a domain (say, <code>example.com</code>) from Google and my Django application (say, <code>mysite.herokuapp.com</code>) runs on Heroku. The CNAME is set on Google to forward the http requests to the Django applicaiton on Heroku. Forwarding requests from <code>http://mysite.example.com</code> to <code>mysite.herokuapp.com</code> works just fine.</p>
  
  <p>Recently, I need to introduce <code>progressive-web-application</code> to my application and it requires the <code>https</code> protocol, instead of <code>http</code>, that is, the URL now has to be <code>https://mysite.example.com</code> and it doesn't work for Google domains. I tried <code>https://mysite.herokuapp.com</code> and it works fine, which means Heroku already supports <code>https</code>. However, I tried (and also googled) for a long time without finding a solution.</p>
  
  <p>So how do I set the Google domain to use <code>https</code> protocol?</p>