> ## Documentation Index
> Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ReceiveSubscriptionChangeMessage SignalR 用戶端方法

> ReceiveSubscriptionChangeMessage SignalR 用戶端方法，在訂閱或取消訂閱要求完成時通知 PlayFab 大廳和配對用戶端。

<Note>
  這裡記載的 REST 和 SignalR API 比用戶端 SDK 更複雜。除非這些 SDK 無法滿足您的需求，否則請考慮改用[大廳 C++ SDK](/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pflobby/pflobby_members) 或[配對 C++ SDK](/zh-TW/services/playfab/multiplayer/lobby/playfabmultiplayerreference-cpp/pfmatchmaking/pfmatchmaking_members)。
</Note>

接收 [SubscriptionChangeMessages](/zh-TW/services/playfab/multiplayer/real-time-messages/types/subscription-change-message)，讓用戶端知道其[訂閱](/zh-TW/services/playfab/multiplayer/real-time-messages/subscribing-to-resources)狀態何時變更。此訊息表示訂閱或取消訂閱的要求已完成處理。服務可能會以用戶端永遠不會收到此訊息的方式而無法執行訂閱更新。因此，用戶端應實作計時器，以便在此方法於 5 秒後仍未收到 [SubscriptionChangeMessage](/zh-TW/services/playfab/multiplayer/real-time-messages/types/subscription-change-message) 時重試訂閱呼叫。此計時器型重試可以執行數次，並對後續嘗試採用指數輪詢。

```text theme={null}
ReceiveSubscriptionChangeMessage(SubscriptionChangeMessage subscriptionChangeMessage)
```

<Tip>
  這是 SignalR 用戶端方法。請參閱在 SignalR 用戶端中[公開用戶端方法的文件](https://learn.microsoft.com/en-us/aspnet/core/signalr/dotnet-client#call-client-methods-from-hub)，這些方法將由伺服器叫用。
</Tip>

## 參數

[**`SubscriptionChangeMessage`**](/zh-TW/services/playfab/multiplayer/real-time-messages/types/subscription-change-message)

## 另請參閱

* 類型 [SubscriptionChangeMessage](/zh-TW/services/playfab/multiplayer/real-time-messages/types/subscription-change-message)
* 用戶端方法 [ReceiveMessage](/zh-TW/services/playfab/multiplayer/real-time-messages/client-methods/receive-message)
* [即時訊息 SignalR 中樞](/zh-TW/services/playfab/multiplayer/real-time-messages/signalr-hub)
* [大廳和配對 API 的即時訊息](/zh-TW/services/playfab/multiplayer/real-time-messages/overview)


## Related topics

- [ReceiveMessage SignalR 用戶端方法](/zh-TW/services/playfab/multiplayer/real-time-messages/client-methods/receive-message.md)
- [即時訊息 SignalR 中樞](/zh-TW/services/playfab/multiplayer/real-time-messages/signalr-hub.md)
- [SubscriptionChangeMessage 即時訊息類型](/zh-TW/services/playfab/multiplayer/real-time-messages/types/subscription-change-message.md)
- [Message 即時訊息類型](/zh-TW/services/playfab/multiplayer/real-time-messages/types/message.md)
- [StartOrRecoverSession SignalR 伺服器方法](/zh-TW/services/playfab/multiplayer/real-time-messages/server-methods/start-or-recover-session.md)