SFSafariViewController - Interacting with the parent app from a web-page
<p>I'm trying to research a way to load a web view controller into an iOS app, such that the web page can communicate data back up to the parent.</p>

<p>Is this possible with <code>SFSafariViewController</code>? Is there some mechanism like post-messaging, which will let me send data back up to the native app?</p>

<p>Note: it's pretty important that I use SFSafariViewController, since I also need the web view to persist/share cookies with Safari.</p>