In older versions of iOS, it's not possible to call `NETunnelProviderManager.loadAllFromPreferences()` from inside the network extension process. We were seeing `NETunnelProviderManager objects cannot be instantiated from NEProvider processes` errors in iOS 16. It's unclear exactly when the change happened to allow it, but as far as we can tell it was in iOS 17.
To Test:
1. On a real device running iOS 16, ensure that enrolling as a Managed Nebula host works correctly.
2. Start the site.
3. Update the host in the admin panel and wait at least 15 minutes for a `checkForUpdate` from the mobile client. You should get a `Host renewed` audit log for the host.
4. Verify that there's a log for "Reloading Nebula" in the mobile host, and that it has an up-to-date config.
The main thing here is that it will support edge-to-edge when we target android 15, and it changes the default for deep links.
The update to mobile_scanner should improve ios simulator support, but I'm finding that the app still won't load in the simulator (even without mobile_scanner at all), so there's some other work to do there.
https://medium.com/flutter/whats-new-in-flutter-3-27-28341129570c
This fixes a few issues:
1) When updates are made, we will no longer create duplicate VPN profiles, rather we will update existing ones.
2) We will correctly update an existing profile when the site is running and an update is received, rather than attempting to create a new profile, which failed due to permissions errors.
3) We will always reload nebula, even if we can't successfully save the VPN profile.
4) The default polling interval of 15 minutes is restored (previously set to 30 seconds during testing).
So far in manual testing I've confirmed that I do not lose the tunnel to my lighthouse even after the original 30 minute expiration of a certificate. This confirms that reloads are occurring correctly. Additionally, duplicate sites are not created when updates occur while the site is disconnected.
And target iphoneos 12, to avoid some warnings.
We only use the file picker to allow users to load in nebula certs/keys, we don't need access to pictures.
This updates flutter to 3.24.1, the latest stable version, and also updates our flutter dependencies to latest.
It targets the latest android sdk, 34, which is required if we want to publish a new version to the Google Play store.
I also needed to make a few adjustments to handle deprecations. The biggest change is that I needed to wrap the main widget in MaterialApp to avoid problems with AdaptiveSwitch in iOS.
