createFcmNotification - ServiceBusNotification-Format "gcm" vs "fcm", about azure-notificationhubs-java-backend

[amit70]

@hangryfabian Did you get the solution for the above problem statement. Even I'm facing the same issue and being forced to FCM from google.

[hangryfabian]

No :(

[jvbeck]

The C# equivalent code sends "gcm" too - thanks to line 1794 of NotificationHubClient.cs In the SendNotificationImplAsync method we have
// Convert FcmNotification into GcmNotification
notification = FcmToGcmNotificationTypeCast(notification);

Problems could be caused by FcmRegistration. This sends a GcmRegistrationDescription entity in the XML whereas the C# equivalent sends an FcmRegistrationDescription entity. However, the C# code also converts any GcmRegistrationDescription objects that it receives to FcmRegistrationDescription objects so the back-end could handle this.

[mpodwysocki]

As noted on our ReadMe that GCM is the only valid value as FCM will throw an error as we do not fully support the FCM protocol, only the FCM-Legacy protocol via the GCM setting.