IpcMain : add support for async callbacks

Callbacks triggered by the UI are async (with respect to the web UI) but are handled with a non-async C# action:

Electron.IpcMain.On(string channel, Action<object> listener)

It is now common for C# controller methods to be async so it would be convenient to support them directly with the following overload i.e.

Electron.IpcMain.On(string channel, Func<object, Task> listener)

Bridging the sync -> async boundary, might just mean using Task.Run but I don’t know whether running it on the threadpool is actually optimal because I assume On is already being invoked on it’s own thread. By implementing this API, hopefully you are able to make the right choice about how to execute the async method without adding unnecessary overhead.

//
// Is invoking on the threadpool ideal?
//
public void On(string channel, Func<object, Task> listener) =>
    this.On(
        channel, 
        args => Task.Run(async () => await listener(args)));

[marcianobandeira]

currently, electron have handle and invoke methods, wich provides async await calls

// Renderer process ipcRenderer.invoke(‘some-name’, someArgument).then((result) => { // … })

// Main process ipcMain.handle(‘some-name’, async (event, someArgument) => { const result = await doSomeWork(someArgument) return result })

it’s possible in Electron.NET?

[GregorBiswanger]

🎉🚀 New Electron.NET version 23.6.1 released 🚀🎉

With native Electron 23 and .NET 6 support. Your problem should be fixed here. If you continue to have the problem, please let us know. Please note the correct updating of your API & CLI. Info in the README. Have fun!