Duplicate Notifications Delivered through FC

Không có tệp repository hoặc test nào được nêu tên. Bắt đầu từ lệnh gọi FirebaseMessaging.getInstance.send và so sánh ID tin nhắn phía máy chủ cùng các log gửi với các log nhận của Notification Service Extension. Hoàn tất khi xác định được việc trùng lặp bắt nguồn từ SDK, Firebase Cloud Messaging hay quá trình phân phối downstream, kèm theo một kiểm chứng có thể tái hiện hoặc một nguyên nhân bên ngoài được ghi lại.

Environment:

• Operating System version: Java 8
• Firebase SDK version: 10.11.0
• Library version: 8.1.0
• Firebase Product: messaging (auth, database, storage, etc)

Problem:

We're seeing multiple instances of a single message being sent via Cloud Messaging using the Firebase Admin SDK, and users seeing duplicates on iOS. We have logs both on the server side, directly before and after on the server side, and on the client side upon receipt in a Notification Service Extension.

We've verified through these logs (tied to data from user screenshots), that the message is sent only once on our server, we receive a success response from the Firebase SDK, and the user receives that exact notification twice.

Server Logs:

16:08:16.542 | al-pool-2228 |  INFO | w.SendNotificationWorker$ | 303 | 31ec5101-b43e-4519-99a1-9bb3650471c7: Successfully sent notification 2273480
16:08:16.537 | al-pool-7377 |  INFO | .n.NotificationDispatcher | 342 | Notification id 2273480 sent status true
16:08:16.537 | al-pool-7377 |  INFO | c.s.f.s.FirebaseService$  | 158 | Submitted notification to Firebase with messageId: projects/{redacted}/messages/{redacted} for notification id: 2273480
16:08:16.336 | al-pool-4602 |  INFO | w.SendNotificationWorker$ |  92 | 31ec5101-b43e-4519-99a1-9bb3650471c7: Sending notification 2273480

Client Logs:

16:08:21.092 AM -0700 |	INFO | {redacted} | NotificationService | did receive notification | notificationId = 2273480
16:08:21.091 AM -0700	| INFO | {redacted} | NotificationService | did receive notification | notificationId = 2273480

Relevant Code:

val messageId = FirebaseMessaging.getInstance.send(messageBuilder.build)
logger.info(s"Submitted notification to Firebase with messageId: $messageId for notification id: ${notificationId
          .getOrElse(0L)}")