[.Net 9.0] Oqtane.Maui 6.0.2 Help wanted

[Mouss-coder]

Hello everyone, I am new to Oqtane and would like to thank and congratulate you for the amazing work you have done.

I am currently trying out the solution, specifically Oqtane.Maui, to potentially propose it to a client for their needs.

I have followed all the steps, but I’ve been scratching my head for a while now.

I currently have version 6.0.2 installed, and the server, client, and Windows app work fine. However, things are more complicated with the Android emulator (API 35).

When I launch the app (the server is already running in another instance of VS), I get an error.

It stops in MAUIProgram.cs while enumerating the DLL files in LoadClientAssemblies (line 111) and provides me with the following error in the debug console:

blazor.webview.js:1 Connection failure
at Xamarin.Android.Net.AndroidMessageHandler.<>c__DisplayClass137_0.b__0() in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Xamarin.Android.Net/AndroidMessageHandler.cs:line 577
at System.Threading.Tasks.Task.InnerInvoke()
at System.Threading.Tasks.Task.<>c.<.cctor>b__292_0(Object obj)
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location ---
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of stack trace from previous location ---
at Xamarin.Android.Net.AndroidMessageHandler.DoProcessRequest(HttpRequestMessage request, URL javaUrl, HttpURLConnection httpConnection, CancellationToken cancellationToken, RequestRedirectionState redirectState) in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Xamarin.Android.Net/AndroidMessageHandler.cs:line 631
at Xamarin.Android.Net.AndroidMessageHandler.DoSendAsync(HttpRequestMessage request, CancellationToken cancellationToken) in /Users/runner/work/1/s/xamarin-android/src/Mono.Android/Xamarin.Android.Net/AndroidMessageHandler.cs:line 497
at System.Net.Http.HttpClient.g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
at Oqtane.Services.ServiceBase.d__14`1[[Oqtane.Models.Installation, Oqtane.Shared, Version=6.0.2.0, Culture=neutral, PublicKeyToken=null]].MoveNext() in C:\Boulot\OQTANE\Test\Oqtane.Client\Services\ServiceBase.cs:line 163
at Oqtane.Services.InstallationService.IsInstalled() in C:\Boulot\OQTANE\Test\Oqtane.Client\Services\InstallationService.cs:line 42
at Oqtane.UI.Routes.OnParametersSetAsync() in C:\Boulot\OQTANE\Test\Oqtane.Client\UI\Routes.razor:line 64
at Microsoft.AspNetCore.Components.ComponentBase.CallStateHasChangedOnAsyncCompletion(Task task)
at Microsoft.AspNetCore.Components.ComponentBase.RunInitAndSetParametersAsync()
at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle, ComponentState owningComponentState)

Do you have any ideas to guide me in solving this issue?

Additionally, I am wondering whether Oqtane.Maui is still active, as I haven't seen any contributions to the project for a while apart from dependency updates.

If I can help in any way with my modest knowledge, it would be a pleasure to contribute to this great project! 😊

Thank you.

[sbwalker]

@Mouss-coder yes, Oqtane.Maui is still active. The reason why there have not been any contributions to Oqtane.Maui recently is because it is just a thin shell for running the main Oqtane project within various native clients using Blazor Hybrid.

The error message appears to be a configuration error where the Android client is not able to connect to the backend API.

I suggest you step through MauiProgram.cs to see how it retrieves the Url for the backend API.

If the Url is correct then the problem could be that the Android emulator does not know how to resolve the Url to a resource on your local machine ie. the emulator is essentially running as an independent process so you need to understand how it is able to access services outside that process.

Google "how to configure maui android emulator to access API"

[Mouss-coder]

Thank you for your quick response @sbwalker!
I better understand the logic behind the Maui project.
As for my error I will investigate further.
By following this discussion, #2367, I am starting to realize that I will probably have to host my oqtane server in https somewhere.
Moreover, is the server https://www.dnfprojects.com/ accessible to everyone for our MAUI test apps?

I hope not to disturb too much, I know you have a lot of work and thank you for what you give to the .Net community.