Flutter integration: Authentication token refresh fails after 1 hour

[TakuroNagasawa]

Description

When using Firebase iOS SDK with Flutter, all Firebase services become unavailable after approximately 1 hour of usage. This appears to be a token refresh issue, as it occurs around the default token expiration time.

Related Issues

• 🐛 [cloud_firestore] ava.lang.RuntimeException: Internal error in Cloud Firestore (24.6.0). #11087
• chore(release): prepare for release #9989
• [App Check] Set limited_use request param for App Attest firebase-ios-sdk#11544

Environment

• Flutter version: 3.27.3
• firebase_core: ^3.10.1
• firebase_auth: ^5.4.1
• Other Firebase packages listed in Flutter issue

Issue Details

The token refresh mechanism appears to fail after the initial token expires (~1 hour), causing all Firebase services to become unavailable. This includes:

• Authentication
• Firestore
• Cloud Functions

Error Messages

Multiple error types are encountered depending on the service being accessed:

PlatformException(unavailable, The service is currently unavailable...)
PlatformException(unknown, Unknown error or an error from a different error domain...)
PlatformException(internal-error, An internal error has occurred...)

Questions

1. Is there a known issue with token refresh when integrated with Flutter?
2. Are there specific iOS background task settings required for token refresh?
3. Is there a way to debug the token refresh process?

[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

[MichaelVerdon]

Duplicate of #17024 closing.