Authentication with Google OpenOAuthProvider

Question

I created the default ASP.NET project template in Visual Studio and moved to the AuthConfig folder inside App_Start . Then I uncommented the following line:

 OpenAuth.AuthenticationClients.AddGoogle(); 

I got a button to enter google as follows:

When I click the Google button, I get this error:

 An exception of type 'DotNetOpenAuth.Messaging.ProtocolException' occurred in DotNetOpenAuth.OpenId.RelyingParty.dll but was not handled in user code Additional information: No OpenID endpoint found. 

WE.config File

  <?xml version="1.0" encoding="utf-8"?> <!-- For more information on how to configure your ASP.NET application, please visit http://go.microsoft.com/fwlink/?LinkId=169433 --> <configuration> <configSections> <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --> <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" /> </configSections> <system.web> <compilation debug="true" targetFramework="4.5" /> <httpRuntime targetFramework="4.5" /> <pages> <namespaces> <add namespace="System.Web.Optimization" /> </namespaces> <controls> <add assembly="Microsoft.AspNet.Web.Optimization.WebForms" namespace="Microsoft.AspNet.Web.Optimization.WebForms" tagPrefix="webopt" /> </controls></pages> <authentication mode="Forms"> <forms loginUrl="~/Account/Login" timeout="2880" defaultUrl="~/" /> </authentication> <profile defaultProvider="DefaultProfileProvider"> <providers> <add name="DefaultProfileProvider" type="System.Web.Providers.DefaultProfileProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" applicationName="/" /> </providers> </profile> <membership defaultProvider="DefaultMembershipProvider"> <providers> <add name="DefaultMembershipProvider" type="System.Web.Providers.DefaultMembershipProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" applicationName="/" /> </providers> </membership> <roleManager defaultProvider="DefaultRoleProvider"> <providers> <add name="DefaultRoleProvider" type="System.Web.Providers.DefaultRoleProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" applicationName="/" /> </providers> </roleManager> <sessionState mode="InProc" customProvider="DefaultSessionProvider"> <providers> <add name="DefaultSessionProvider" type="System.Web.Providers.DefaultSessionStateProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" /> </providers> </sessionState> </system.web> <runtime> <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> <dependentAssembly> <assemblyIdentity name="DotNetOpenAuth.Core" publicKeyToken="2780ccd10d57b246" /> <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.1.0.0" /> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="DotNetOpenAuth.AspNet" publicKeyToken="2780ccd10d57b246" /> <bindingRedirect oldVersion="0.0.0.0-4.1.0.0" newVersion="4.1.0.0" /> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="EntityFramework" publicKeyToken="b77a5c561934e089" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-5.0.0.0" newVersion="5.0.0.0" /> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" culture="neutral" /> <bindingRedirect oldVersion="0.0.0.0-1.5.2.14234" newVersion="1.5.2.14234" /> </dependentAssembly> </assemblyBinding> </runtime> <entityFramework> <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" /> </entityFramework> <appSettings> <add key="ValidationSettings:UnobtrusiveValidationMode" value="None" /> </appSettings> </configuration> 

Please help me. What am I missing?

Answer 1

In fact, such an implementation (OpenId) is deprecated . If possible, you should upgrade to MVC5. In MVC5, this is very direct . This solution will still work. If you cannot, you need to either write this one or use a third-party component that uses OAuth2 to communicate with Google. See this answer for more information on deprecated features.

Answer 2

As you mentioned in your chat comment, using the Web Form Application .On click Google Event.

 protected void lnkbtngplus_Click(object sender, EventArgs e) { try { var Googleurl = "https://accounts.google.com/o/oauth2/auth?response_type=code&redirect_uri=" + ConfigurationManager.AppSettings["googleplus_redirect_url"] + "&scope=googleapis.com/auth/…" + ConfigurationManager.AppSettings["googleplus_client_id"]; Session["loginWith"] = "google"; Response.Redirect(Googleurl); } catch (Exception ex) { Master.Messages(ex.Message); } } 

At your redirect url, you can collect parameter values ​​as below

  try { var url = Request.Url.Query; if (url != "") { string queryString = url.ToString(); char[] delimiterChars = { '=' }; string[] words = queryString.Split(delimiterChars); string code = words[1]; SocialNetwork.GoogleUserOutputData json_data = SocialNetwork.Googlemethod(code); String email = String.Empty; String id = String.Empty; email = json_data.email; id = json_data.given_name; if (email != null && email != "") { txtFname.Text = id; txtemail.Text = email; } } } catch (Exception ex) { } 

In the SocialNetwork class file , I have the following methods

 #region Google protected static string Parameters; public static GoogleUserOutputData Googlemethod(string code) { GoogleUserOutputData serStatus1 = new GoogleUserOutputData(); string json_data = string.Empty; if (code != null) { //get the access token HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create("https://accounts.google.com/o/oauth2/token"); webRequest.Method = "POST"; Parameters = "code=" + code + "&client_id=" + googleplus_client_id + "&client_secret=" + googleplus_client_sceret + "&redirect_uri=" + googleplus_redirect_url + "&grant_type=authorization_code"; byte[] byteArray = Encoding.UTF8.GetBytes(Parameters); webRequest.ContentType = "application/x-www-form-urlencoded"; webRequest.ContentLength = byteArray.Length; Stream postStream = webRequest.GetRequestStream(); // Add the post data to the web request postStream.Write(byteArray, 0, byteArray.Length); postStream.Close(); WebResponse response = webRequest.GetResponse(); postStream = response.GetResponseStream(); StreamReader reader = new StreamReader(postStream); string responseFromServer = reader.ReadToEnd(); GooglePlusAccessToken serStatus = JsonConvert.DeserializeObject<GooglePlusAccessToken>(responseFromServer);//JsonConvert.DeserializeObject<GooglePlusAccessToken>(responseFromServer); //GooglePlusAccessToken serStatus = new GooglePlusAccessToken(); if (serStatus != null) { string accessToken = string.Empty; accessToken = serStatus.access_token; if (!string.IsNullOrEmpty(accessToken)) { using (var w = new WebClient()) { json_data = w.DownloadString("https://www.googleapis.com/oauth2/v1/userinfo?access_token=" + accessToken); serStatus1 = JsonConvert.DeserializeObject<GoogleUserOutputData>(json_data); } } else { } } else { } } return serStatus1; } public class GoogleUserOutputData { public string id { get; set; } public string name { get; set; } public string given_name { get; set; } public string email { get; set; } public string picture { get; set; } } public class GooglePlusAccessToken { public string access_token { get; set; } public string token_type { get; set; } public int expires_in { get; set; } public string id_token { get; set; } public string refresh_token { get; set; } } #endregion 

adding a google autentication screenshot based on my working example as above

Answer 3

You can lose ConfigureAuth for Google Authentication by adding the following code:

  app.UseGoogleAuthentication(new GoogleOAuth2AuthenticationOptions() { ClientId = "*****************.googleusercontent.com", ClientSecret = "********************" }); 

In Startup.Auth.cs

  public void ConfigureAuth(IAppBuilder app) { // Configure the db context, user manager and signin manager to use a single instance per request app.CreatePerOwinContext(ApplicationDbContext.Create); app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create); app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create); // Enable the application to use a cookie to store information for the signed in user // and to use a cookie to temporarily store information about a user logging in with a third party login provider // Configure the sign in cookie app.UseCookieAuthentication(new CookieAuthenticationOptions { AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie, LoginPath = new PathString("/Account/Login"), Provider = new CookieAuthenticationProvider { // Enables the application to validate the security stamp when the user logs in. // This is a security feature which is used when you change a password or add an external login to your account. OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, ApplicationUser>( validateInterval: TimeSpan.FromMinutes(30), regenerateIdentity: (manager, user) => user.GenerateUserIdentityAsync(manager)) } }); app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie); // Enables the application to temporarily store user information when they are verifying the second factor in the two-factor authentication process. app.UseTwoFactorSignInCookie(DefaultAuthenticationTypes.TwoFactorCookie, TimeSpan.FromMinutes(5)); // Enables the application to remember the second login verification factor such as phone or email. // Once you check this option, your second step of verification during the login process will be remembered on the device where you logged in from. // This is similar to the RememberMe option when you log in. app.UseTwoFactorRememberBrowserCookie(DefaultAuthenticationTypes.TwoFactorRememberBrowserCookie); // Uncomment the following lines to enable logging in with third party login providers //app.UseMicrosoftAccountAuthentication( // clientId: "", // clientSecret: ""); //app.UseTwitterAuthentication( // consumerKey: "", // consumerSecret: ""); //app.UseFacebookAuthentication( // appId: "", // appSecret: ""); // The same with Facebook, Twitter, MicrosoftAccount app.UseGoogleAuthentication(new GoogleOAuth2AuthenticationOptions() { ClientId = "*****************.googleusercontent.com", ClientSecret = "********************" });