Are Universal Links cached in iOS? Do they work offline?
<p>I tested Universal Links in iOS by turning on Airplane mode and saw that the correct application was opened (instead of a website)</p>

<p>This indicates some level of "caching" the <code>apple-app-site-association</code>.  </p>

<p>I want to determine the extent to which this is cached, so I can determine</p>

<ul>
<li>What UX edge cases are there (e.g. Offline for x days)</li>
<li>What security considerations are there (e.g. MITM / SSLStrip + .well-known/URL)</li>
</ul>

<p>etc.</p>

<p>Ideally I would like to have details if additional logic is employed (conditional caching if HTTPS employed, DNSSec, etc)</p>