HTTP/1.1 200 OK
Server: Apache
Date: Wed, 09 Dec 2015 03:29:14 GMT
Content-Type: text/html
Connection: keep-alive

<!doctype html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Test</title>
    <link rel="alternate" type="application/mf2+json" href="http://source.example.com/rel-alternate-fallback.json" />
  </head>
  <body>
    <div class="h-entry">
      <p class="p-content">XRay should use this content since the JSON in the rel-alternate is invalid</p>
    </div>
  </body>
</html>