Logout not Working (BlazorWebAssemblyStandaloneWithIdentity)

[Softwerker04]

Describe the issue
After register a new user and login the logout is not working. The screen is flickering and the user is not logged out.

To Reproduce
Steps to reproduce the behavior:

1. Create a new project map with regarding projects (Backend and BlazorWasmAuth)
2. Set both project as start projects
3. Register a new user
4. Login for new user
5. Try to logout

Expected behavior
User should become logged out

.NET Version
8.0.100

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Issue Details

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• Content Source: dotnet/blazor-samples
• GitHub Login: @guardrex

[guardrex]

Thanks @Softwerker04 ... I'll take a look. We just performed an update that might have accidentally broken it.

[guardrex]

Yep! We broke it! Jeremy is the sample author, and he supplied some code to prevent posting anything but an empty JSON message {}, and that code that he sent over seems to have broken the logout. Stand-by .... if I don't see the resolution, I'll ping him to take a look.

[guardrex]

@JeremyLikness ... The logout code that you sent is failing, placing the logout in a nasty loop on the following exception ...

Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1]
An unhandled exception has occurred while executing the request.
Microsoft.AspNetCore.Http.BadHttpRequestException: Expected a supported JSON media type but got "".

[guardrex]

@Softwerker04 ... Until Jeremy comes in with a fix, you can change to the prior code. You can see it on the PR diff ......

https://github.com/dotnet/blazor-samples/pull/130/files

[guardrex]

Jeremy, the code is ...

app.MapPost("/logout", async (
    SignInManager<AppUser> signInManager,
    [FromBody]object empty) =>
{
    if (empty is not null)
    {
        await signInManager.SignOutAsync();
        return Results.Ok();
    }
    return Results.NotFound();
}).RequireAuthorization();

... and I've temporarily reverted the sample back to the prior code with a note (code comment) to see this issue.

[Softwerker04]

@guardrex, @JeremyLikness After changing the handler for logout endpoint the mechanism seems to work. Great job, thanks a lot for your support!!!

[PedrooNL]

@guardrex, @JeremyLikness After changing the handler for logout endpoint the mechanism seems to work. Great job, thanks a lot for your support!!!

@Softwerker04 Can you explain what you did? Having the same issue.

[guardrex]

Revert to the prior code for now ...

https://github.com/dotnet/blazor-samples/blob/main/8.0/BlazorWebAssemblyStandaloneWithIdentity/Backend/Program.cs#L47-L51

[PedrooNL]

Revert to the prior code for now ...

https://github.com/dotnet/blazor-samples/blob/main/8.0/BlazorWebAssemblyStandaloneWithIdentity/Backend/Program.cs#L47-L51

Got it. Works. Thanks.