Sending silent push notifications to iOS using FCM

[Moiz Hayder]

How can we send a silent push notification to the iOS app through FCM Downstream messages ? Here is my Downstream message :

https://fcm.googleapis.com/fcm/send

{ 

  "content_available":true ,

  "priority": "high",

  "data":{"verify_url":"http://example.com"},

  "to": "<device token>"

}

I received a success response from Firebase, but the notification is not delivered to the iOS app.

Also, when I send a Downstream Message with the notification payload, it is successfully delivered to the iOS app but its not silent.

[Spundun Bhatt]

Hmm, most likely it's a case of APNS dropping the notification while the app is in background.  If you see this being constantly broken, can you report this through https://firebase.google.com/support/ ? Either "trouble shooting" or "report a bug" should do it.

-S

[Silvano Luciani]

Hi Moiz,

I think the problem is that you're not supposed to use high priority with silent notifications, from Apple's docs on high priority:

"Notifications with this priority must trigger an alert, sound, or badge on the target device. It is an error to use this priority for a push notification that contains only the content-available key. It is an error to use this priority for a push notification that contains only the content-available key."

Can you try again removing the high priority?