title: Invalid Host Header when ngrok tries to connect to React dev server
body: <p>I'm trying to test my React application on a mobile device. I'm using ngrok to make my local server available to other devices and have gotten this working with a variety of other applications. However, when I try to connect ngrok to the React dev server, I get the error:</p>
  
  <pre><code>Invalid Host Header 
  </code></pre>
  
  <p>I believe that React blocks all requests from another source by default. Any thoughts?</p>