将推送发送到多个设备FCM（Web）无法生成通知密钥

Question

I am trying to figure how to group multiple tokens ids and do a "Group messaging" not through topic group. The document says the response will send a unique notification key:

1. Using FCM
2. Group multiple devices
3. Web push through JavaScript

Here is the Postman request I am sending:

See the response:

But I am not getting the unique notification KEY as per the document from google FCM .

Answer 1

You're using the endpoint for sending a message:

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

Resulting for it to return a response as if you sent a message. It ignores the other parameters ( operation , notification_key_name ) and uses only registration_ids .

As seen in the sample POST request in the docs (the docs is under Android, but the sample is a POST request so it shouldn't matter), you should use:

https://android.googleapis.com/gcm/notification