unity3d - Unity Firebase Cloud Messaging SendAsync Missing

Question

https://firebase.google.com/docs/cloud-messaging/unity/topic-messaging Stated in the document that you're able to send a message. But in my version, 7.0.2, there is no SendAsync method. Does anyone know how I can send a message from a device?

Answer 1

The SendAsync method you found in the documentation is only available in the (.NET) Admin SDK:

await FirebaseMessaging.DefaultInstance.SendAsync(message);

This SendAsync does not exist in the Android/iOS SDK or the Unity wrappers around that. There is no way to send messages directly from a device, as this would be an insecure operation - allowing all users to send whatever message you want to all other users.

Instead, you'll need to send the messages from a trusted environment, such as the Firebase console, your development machine, a server you control, or Cloud Functions. See How to send one to one message using Firebase Messaging