AzureADB2C.UI doesn't allow customizing post-logout redirect URI

I’m using Microsoft.AspNetCore.Authentication.AzureADB2C.UI to provide B2C login in a (server-side) Blazor app. The problem is that after the user logs out (by navigating to AzureADB2C/Account/SignOut), they are logged out and redirected back to a generic ‘signed out’ page at /AzureADB2C/Account/SignedOut.

I would like to be able to customize where the user is redirected back to after logout, but my app is just a simple SPA and I’d rather not add controllers or extra pages just for that functionality. If it were possible to configure the callback URL used by the AzureADB2C.UI library, that would solve the issue.

I’ve worked around the issue by re-writing calls to /AzureADB2C/Account/SignedOut using app.UseRewriter as suggested on StackOverflow. It seems like making AzureADB2C.UI’s callback URL configurable would be an even cleaner solution, though.

[jH-]

@MauriRojas Made some changes to this, seems to work:

options.Events.OnSignedOutCallbackRedirect = async context =>
{
    context.HttpContext.Response.Redirect(context.Options.SignedOutRedirectUri);
    context.HandleResponse();
};

Redirects to root by default, set SignedOutRedirectUri if you’re using a custom logout component.

[mjrousos]

You can use IApplicationBuilder.UseRewriter to redirect requests to /AzureADB2C/Account/SignedOut to a different URL. Here’s the code I added towards the beginning of my Startup.Configure method to use the rewriter:

app.UseRewriter(new RewriteOptions().AddRedirect("AzureADB2C/Account/SignedOut", "/"));