Get your NameIdentifier application in Azure App Services using OnlineIdAuthenticator

Question

Get your NameIdentifier application in Azure App Services using OnlineIdAuthenticator

I use the OnlineIdAuthenticator class to get the authentication token to log in to Azure App Services, but I cannot get the ticket server in the name NameIdentifier. I need an identifier to uniquely identify the user and store him in the database.

I want to use OnlineIdAuthenticator to enable single sign-on, so the user is not prompted to log in every time I launch my application (in the application for the Windows Store).

I use this method in my application to get the token and login:

    protected override async Task<bool> LoginAsync()
    {
        var authenticator = new OnlineIdAuthenticator();

        var mobileServicesTicket = new OnlineIdServiceTicketRequest("myapp.azurewebsites.net", "JWT");

        var ticketRequests = new List<OnlineIdServiceTicketRequest>() { mobileServicesTicket };

        var authResult = await authenticator.AuthenticateUserAsync(ticketRequests, CredentialPromptType.PromptIfNeeded);

        if ((authResult.Tickets.Count == 1) && (authResult.Tickets[0].ErrorCode == 0))
        {
            var accessToken = authResult.Tickets[0];

            var token = new JObject();
            token.Add("authenticationToken", accessToken.Value);

            var _mobileServiceClient = ServiceLocator.Current.GetInstance<IMobileServiceClient>();
            var user = await _mobileServiceClient.LoginAsync(MobileServiceAuthenticationProvider.MicrosoftAccount, token);

            return true;
        }
        else
        {
            return false;
        }
    }

Server side I use this method to get a unique identifier:

    public static async Task<string> GetUserId(IPrincipal pricipal, HttpRequestMessage request)
    {         
        ProviderCredentials credentials = await pricipal.GetAppServiceIdentityAsync<MicrosoftAccountCredentials>(request);
        return credentials.Provider + ":" + credentials.Claims[ClaimTypes.NameIdentifier];
    }