[IOS] Would it be possible to support non-embedded browser (so use the default system browser)

[MathiasCochet]

I have been using a fork* of this library that adds the use of a default browser to authenticate. I had to use this becasue the way my authentication works is as follows:

• user clicks on login button -> default browser opens (not in-app) -> browser opens authentication app (itsme) -> app opens callback url back in the browser -> browser closes and goes back to app.

This used to work just fine until iOS 18. If I click the login button I just get "error: unable to open Safari."

So I tried using the latest version of flutter_appauth. But then the flow breaks. it looks something like this.

• user clicks on login button -> in-app browser opens -> inapp browser opens authentication app (itsme) -> app opens callback url in default browser (so it doesnt return to the app with the in-app browser open) -> callback show an error.

*the fork: https://github.com/digitalrmdy/flutter_appauth/tree/feature/android-sdk-34

[MaikuB]

This would be something you'd need to investigate to determine. The plugin makes use of the AppAuth Android and iOS SDKs so the functionality is really provided by those SDKs

[flora-gr]

We have the same issue with our app > browser > auth app > browser > app flow. We would really like non-embedded browser support.

[CaringDev]

There was an attempt at solving this in https://github.com/MaikuB/flutter_appauth/pull/318 I'm currently rebasing these changes onto latest ExternalUserAgent feature. Extending the enum should be straightforward...

[CaringDev]

[...] #318 [...] rebasing these changes onto latest ExternalUserAgent feature. Extending the enum should be straightforward...

Turns out it is very straightforward 😀