Blazor WebAssembly - Passing acr_values to IdentityServer4

[Ef0Dev]

I have a Blazor WebAssembly app where I need to authenticate with an existing, external Identity Server. I'm following the documentation here utilizing the AddOidcAuthentication middleware. When the request is made to the identity server, I need to pass acr_values. The specific use case I have for acr_values is that I need to pass the tenant - this is a multi-tenant application where the user must login to particular tenant.

I am not seeing any properties I can configure on the OidcProviderOptions for acr_values.

Is there a way to do this I'm not seeing, or is this feature simply not supported?

Thanks.


cc: @guardrex who suggested I raise the issue here.

[vanillajonathan]

I've been able to set it using JavaScript.

window.AuthenticationService.instance._userManager._settings._acr_values = `tenant:contoso`;

I think you can do it in your Program.cs file too, something like this:

builder.Services.AddOidcAuthentication(options =>
{
    builder.Configuration.Bind("Local", options.ProviderOptions);
    options.ProviderOptions.ResponseType = "code";
    options.ProviderOptions.AdditionalProviderParameters.Add("acr_values", "tenant:contoso");
});