Firebase neither give callback nor error

Question

I am retrieving data from firebase database.

When I debug the code from simulator it gives all the data from that node but when i debug the code from device it neither goes to success block nor error block. Nothing happens.

Code I have written is given below.

FIRDatabase.database().reference().child("registeredUserEmail").observeSingleEventOfType(.Value, withBlock: { (snapshot) in
        debugPrint(snapshot.value)
        if snapshot.hasChild(email.escapeEmail()) {
            debugPrint("false")
            completion(false)
        }
        else {
            debugPrint("true")
            completion(true)
        }
    }) { (error) in
        debugPrint("error in isEmailFree - " + error.localizedDescription)
        completion(false)
    }

Here are the console logs when app first time launches

2016-06-07 11:36:30.471[4067:1092564] Configuring the default app. 2016-06-07 11:36:30.530[4067:] Firebase Analytics v.3200000 started 2016-06-07 11:36:30.532 Artup[4067:] To enable debug logging set the following application argument: -FIRAnalyticsDebugEnabled 2016-06-07 11:36:30.576[4067:1092564] Firebase Crash Reporting: Successfully enabled 2016-06-07 11:36:30.590: FIRInstanceID AppDelegate proxy enabled, will swizzle app delegate remote notification handlers. To disable add "FirebaseAppDelegateProxyEnabled" to your Info.plist and set it to NO 2016-06-07 11:36:30.659 Artup[4067:] Successfully created Firebase Analytics App Delegate Proxy automatically. To disable the proxy, set the flag FirebaseAppDelegateProxyEnabled to NO in the Info.plist Config not fetched Error Error Domain=com.google.remoteconfig.ErrorDomain Code=8002 "(null)" UserInfo={error_throttled_end_time_seconds=1465279698.4105051} 2016-06-07 11:36:31.450 Artup[4067:] Firebase Analytics enabled

In the above code none of the message are printed. Console log is clear. — sant05
Hey @Shubhank I have edited the question.Please check out the console logs when app first time launches — sant05
is the method in which you are calling this even being called ? — Shubhank

Will Will · Accepted Answer · 2016-09-20T20:57:08

From other Firebase products on iOS and from the UserInfo bit, I think the request is being throttled. Firebase remote config will throttle your requests — I can't speak for the database, however. I don't see anything in the Firebase documentation about this but it seems likely the cause of this error.

Firebase neither give callback nor error

2 Answers