flutter pub add signalr_flutter根據套件公開資料產生的選型評估，僅供參考。
signalr_flutter 是一個 Flutter 插件，可實現與 ASP.NET SignalR 伺服器的即時通訊。它支援 Flutter 應用與基於 .NET 的 SignalR 後端之間的雙向訊息傳遞，具備連接管理、事件處理及自動重連等功能。專為 ASP.NET SignalR（非 .NET Core）設計，可無縫整合至 Android 與 iOS 應用中。此外，該插件簡化了在 Flutter 應用中實作即時更新、聊天系統、通知與協作工具的過程。
以下為關聯原始碼儲存庫的 README 原文快照，最新內容請造訪原始碼儲存庫。
A flutter plugin for .net SignalR client.
First of all, Initialize SignalR and connect to your server.
SignalR signalR = SignalR(
'<Your server url here>',
"<Your hub name here>",
hubMethods: ["<Your Hub Method Names>"]
statusChangeCallback: (status) => print(status),
hubCallback: (methodName, message) => print('MethodName = $methodName, Message = $message'));
signalR.connect();
Here statusChangeCallback will get called whenever connection status with server changes.
hubCallback will receive calls from the server if you subscribe to any hub method. You can do that with hubMethods.
hubMethods are the hub method names you want to subscribe.
There is a headers parameters also which takes a Map<String, String>.
You can also invoke any server method.
signalR.invokeMethod("<Your method name here>", arguments: ["argument1", "argument2"]);
If you are trying to connect with a HTTP url, then you need to add the following lines to the manifest of your android project.
<application
android:usesCleartextTraffic="true">
</application>
This is because of the Network Security Config.
R8 may strip away some SignalR classes for the Android in Release Builds. Add the following line in your proguard-rules.pro file to solve this issue.
-keep class microsoft.aspnet.signalr.client.hubs.** { *; }
For more info check example.
Any issue or PR is always welcome.
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