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By Andres Aguiar

Sample Project

Download a sample project specific to this tutorial configured with your Auth0 API Keys.

System Requirements
  • Microsoft Visual Studio 2015
  • .NET Framework 4.5.2
Show requirements

At the end of this tutorial, you will have a working website that calls a ServiceStack API with authenticated users.

Before Starting

We assume you are familiar with ServiceStack

Create a Simple MVC4 Website and Install ServiceStack Through NuGet

For this example, we will use the standard template that ships with Visual Studio. Select "FILE > New project > ASP.NET Web Application > MVC" .

Once the default template unfolds, use NuGet to install the ServiceStack.Host.Mvc nuget, running the command:

Install-Package ServiceStack.Host.Mvc

Change HomeController to return the default.htm page. Under the Controllers folder add:

public class HomeController : Controller
    public ActionResult Index()
        return Redirect("default.htm");

Install Auth0 OAuthProvider

We provide a Nuget package to simplify integration of Auth0 with ServiceStack based applications.

Run this command on the Package Manager Console:

Install-Package Auth0-ServiceStack-OAuthProvider

This command will add two classes to your project under the App_Start folder: Auth0Provider and Auth0UserSession.

Auth0Provider extends ServiceStack's OAuthProvider and handles the authentication transaction for you.

Enable Authentication and Plugin Auth0's Provider

Open the AppHost.cs file (also under the App_Start folder) generated by the ServiceStack NuGet. Uncomment the following call under the Configure method:


And then uncomment (if it is commented out) and edit the ConfigureAuth method to look like this:

private void ConfigureAuth(Funq.Container container){
 var appSettings = new AppSettings();
 Plugins.Add(new AuthFeature(() => new Auth0UserSession(),
  new IAuthProvider[]
     new Auth0Provider(appSettings, appSettings.GetString("oauth.auth0.OAuthServerUrl"))

In this sample we are not interested in user registration. So we are leaving that section out.

Configuring Callback URLs

After authenticating the user on Auth0, we will do a POST to a URL on your website. For security purposes, you have to register this URL on the Application Settings section on Auth0 Admin app (make sure to change the port).


Enter Configuration Settings

Open your web.config file and change the three Auth0's parameters under <appSettings>:

<add key="oauth.auth0.AppId" value="YOUR_CLIENT_ID" />
<add key="oauth.auth0.AppSecret" value="YOUR_CLIENT_SECRET" />
<add key="oauth.auth0.OAuthServerUrl" value="https://YOUR_AUTH0_DOMAIN" />

Add Backend Code to Test the App

Open the WebServiceExamples.cs file.

6.1. Add the Authenticate Attribute to the Hello DTO:

public class Hello
  public string Name { get; set; }

6.2. Add an IAuthSession Property to the HelloResponse DTO:

public class HelloResponse
  public IAuthSession UserInfo { get; set; }
  public string Result { get; set; }
  public ResponseStatus ResponseStatus { get; set; } //Where Exceptions get auto-serialized

6.3. Modify the HelloService to Return the Current User's UserInfo Object

public class HelloService : Service
  public object Any(Hello request)
    IAuthSession session = this.GetSession();
    var sb = new StringBuilder();
    sb.AppendLine("Id: " + session.Id);
    sb.AppendLine("DisplayName: " + session.DisplayName);

    return new HelloResponse { Result = "Hello, " + request.Name, UserInfo = session };

Notice we are not doing anything useful with these properties. You can place a breakpoint here and explore the session object.

Call the Auth0 Authorization endpoint

You will need to redirect the user to the Auth0 Authorization endpoint in order to log in to the application. We will use the Auth0.NET SDK to construct the redirect URL. First, install the Auth0.AuthenticationApi NuGet package:

Install-Package Auth0.AuthenticationApi

Then, add an AccountController class to your MVC application with a Login action. This action will construct the authorization URL, and then redirect the user to that URL.

public class AccountController : Controller
    public ActionResult Login()
        string clientId = WebConfigurationManager.AppSettings["oauth.auth0.AppId"];
        string domain = WebConfigurationManager.AppSettings["oauth.auth0.OAuthServerUrl"].Substring(8);

        var redirectUri = new UriBuilder(this.Request.Url.Scheme, this.Request.Url.Host, this.Request.Url.IsDefaultPort ? -1 : this.Request.Url.Port, "api/auth/auth0");

        var client = new AuthenticationApiClient(new Uri($"https://{domain}"));
        var authorizeUrlBuilder = client.BuildAuthorizationUrl()
            .WithScope("openid profile")

        return Redirect(authorizeUrlBuilder.Build().ToString());

Add UI Code to Log In and display user info

Open default.htm and add a login button which will redirect the user to the /Account/Login route:

    <a class="btn" href="/Account/Login">Log In</a>

Also add the following statement in the jQuery.ready body which will call the /api/hello endpoint which will return the logged in user's information:

// get user info from hello endpoint
$.getJSON('/api/hello', function (data) {
    $('#userInfo').text(JSON.stringify(data.userInfo, 1, 2));

Add a section to display the UserInfo:

<div>User Info:
     <pre><code id="userInfo">Not logged in</code></pre>

Run the app

You can now run the application, and click on the Log In button. After successful authentication, the user profile will be displayed on the page.

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