SubscribeToTopic() results in 401 #439
Description
[READ] Step 1: Are you in the right place?
- For issues related to the code in this repository file a Github issue.
- For general technical questions, post a question on StackOverflow
with the firebase tag. - For general Firebase discussion, use the firebase-talk
google group. - For help troubleshooting your application that does not fall under one
of the above categories, reach out to the personalized
Firebase support channel.
[REQUIRED] Step 2: Describe your environment
- Operating System version: Ubuntu 22.04.5 LTS
- Firebase SDK version: 3.1.0
- Firebase Product: Firebase Cloud Messaging
- .NET version: 8.0.10
- OS: Ubuntu
[REQUIRED] Step 3: Describe the problem
We have 2 projects on GCP, project A is used to host workloads on GKE, and project B is set with Firebase
We have a service/api that will handle notifications requests from client apps and will send them to FCM.
The authentication is done via ACD and workload federation, the SAs are given all permissions required.
We are able to send notification and data messages to the devices, but when we send a subscribe to topic request we get 401
Steps to reproduce:
- intiialize the default instace for the app,
- get the messaging service
- use SubscribeToTopicAsync to subscribe a device/s to topic
Relevant Code:
FirebaseApp app = FirebaseApp.Create(
new AppOptions
{
ProjectId = firebase_project_id,
Credential = GoogleCredential.GetApplicationDefault(),
});
var firebaseMessaging= FirebaseMessaging.GetMessaging(app);
TopicManagementResponse response = firebaseMessaging
.SubscribeToTopicAsync(new[] { "device_token" }, "test_topic")
.GetAwaiter()
.GetResult();