Is there a possibility that firebase connection fails to connect to server and does not throw any error?

[Tene Patrice]

Hi all

I wrote a code to read data from database and it was working perfectly before I went to bed. However, the following morning when I try connecting using my app (the code was not modified) and it wouldn't connect. My progress dialog kept running for as  long as I left the app running (Although I dismiss this in every possible failure point).

After further investigation, I found that it was throwing an error as shown below. While trying to figure out what was happening, I realized that it wasn't reading any data or throwing any error (I wrote simple logs in each callback function for testing purpose).

I played around with the google api console by updating my SHA1 debug key and app package and it work after a while.

My question is to find out if there is a possibility that the connection to the database fails to connect and it does not throw an error? 

Android Volley - BasicNetwork.performRequest: Unexpected response code 400

The requested URL /v1/token?key=AIzaSyBE4u5DIXDUwH1bY9tcCRrGgVKAeVNx2PMwas not found on this server

[Kato Richardson]

Hello Tene,

Firebase will continue to try and reconnect if the connection is lost. It’s not likely to fail with a connection error of any sort as being offline for a while on a mobile device is perfectly acceptable.

You can learn more about connectivity to the Database by turning on debug logging:

JS:  firebase.database().enableLogging(true);
iOS:  [FIRDatabase setLoggingEnabled:YES];
Android:  FirebaseDatabase.getInstance().setLogLevel(Logger.Level.DEBUG);

And by monitoring the .info/connected path as described in offline capabilities.

☼, Kato

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Kato Richardson |

Developer Programs Eng |

kato...@google.com |

775-235-8398