Remote Config not producing throttling error accurately

[aj2109]

Description

In trying to add non fatal logging specifically for throttling I have discovered what appears to be a bug. Whilst the error status of the connection is 429, as shown in the logs, and the catch let error as RemoteConfig hitting, its error code is never that of throttling (8002), its always internal errors code (8003). (minimumFetchInterval = 0 seconds btw)

Thanks!

Reproducing the issue

func forceThrottle() async {
        let RemoteConfig = RemoteConfig.remoteConfg()
       do {
       for i in 0...1000 {
          let foo = try await remoteConfig.fetchAndActivate()
       }
       } catch let error as RemoteConfigError {
       //prints false
           print("Error code is correct: \(error.code == .throttled)")
       } catch {}
}

Firebase SDK Version

10.21.0

Xcode Version

15.2

Installation Method

Swift Package Manager

Firebase Product(s)

AB Testing, Analytics, App Distribution, Crashlytics, Performance, Remote Config

Targeted Platforms

iOS

Relevant Log Output

10.21.0 - [FirebaseRemoteConfig][I-RCN000026] RCN fetch failure. Response http error code: 429

If using Swift Package Manager, the project's Package.resolved

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If using CocoaPods, the project's Podfile.lock

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[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.

[rizafran]

Thanks for reporting, @aj2109. I tried to reproduce the issue and I was able to get the same error code (8003). I'll be raising this to our engineers to investigate.

[paulb777]

Internally tracked at b/327637888