Making Changes To Your apple-app-site-association File for Universal Links

When you add Universal Links to your app, you have to add a file to your server with the name apple-app-site-association. This is a JSON file that iOS checks so that it knows if it should open a URL in your app instead of in the web browser. So let's say you already have this set up, and now you want to add a new deeplink into your app. You've added the code to the iOS app and shipped it via the App Store. Now you need to update the apple-app-site-association file on your server, to enable the deeplink into your app. Updating apple-app-site-association But iOS doesn't hit your server directly to get that file. It gets scooped up by Apple's CDN, and iOS checks the CDN at a URL like this: https://app-site-association.cdn-apple.com/a/v1/www.neilmacy.co.uk. The CDN refreshes "within 24 hours" of your update. So after you deploy your change to your apple-app-site-association file, it can take a while for your app to follow the universal link as you'd expect. It's useful to know that…