How to handle service down case is Azure AD B2c.

Hi, I am using Microsoft.Identity.Client version 4.22.0 in my Xamarin Forms application for Authentication. I have two questions related to handling of “The webpage is not available”. case.

Qn1 : Is there any way I can retry the login request if the service / B2c is down, after a specific time interval? Qn2: How I can comeback to the calling method if the service is down? So that I can provide a readable method to the user other than failed sign-in url.

I am calling the below methods for login and revalidating the existing token.

   var result = await _authenticationClient.AcquireTokenInteractive(_settings.Scopes)
            .WithParentActivityOrWindow(ParentActivityOrWindow)
           .WithPrompt(Prompt.ForceLogin)
           .WithUseEmbeddedWebView(true)
           .WithExtraQueryParameters(AppIdentifier)
           .ExecuteAsync();

   var accounts = await _authenticationClient.GetAccountsAsync();
                var authResult = await _authenticationClient.AcquireTokenSilent(_settings.Scopes, GetAccountByPolicy(accounts, _settings.SignInPolicy))
                 .ExecuteAsync();

And this is the situation I am trying to tackle.

Please help.

[bgavrilMS]

Hi @stezma -

I don’t think we have a good solution for this yet. The main mitigation developers use today is to detect if the network is down PRIOR to making a token request.

Generally timeouts in .NET world are done using the cancellation mechanism. Notice that ExecuteAsync accept a token. That said the library does not necessarily need to obey your cancellation request, either because it cannot or because the execution has reached a point where it’s too late to cancel.

I think currently we do not react to cancellation in this case, but we probably should, by throwing an OperationCancelledException. Would this help? Does it maybe work today?

[jennyf19]

@bgavrilMS yes, i think this is on our list of asks w/b2c. i’ll mark this as external.