title: How to get cerificate for socket.io without domain (I dont prefer self-signed)
body: <p>how I currently host my socket.io server: </p>
  
  <pre class="lang-js prettyprint-override"><code>const io = require('socket.io')(port);
  </code></pre>
  
  <p>and I am new at this.. so I would like some help..</p>