title: react-native fetch and basic authentication
body: <p>I tried to use fetch with this syntax: </p>
  
  <pre><code>fetch("https://user:password@url", {
     ...
  }).then((response) =&gt; {
     ...
  }).done();
  </code></pre>
  
  <p>The same url works in CURL but returns 401 in React Native.</p>
  
  <p>Any ideas?</p>
  
  <p>Thanks,
  Paul</p>