public async Task <bool> InvokeReturnPath()
        {
            var model = await Authenticate();

            var context = new GoogleReturnEndpointContext(Request.Environment, model, _errorDetails);

            context.SignInAsAuthenticationType = Options.SignInAsAuthenticationType;
            context.RedirectUri     = model.Extra.RedirectUrl;
            model.Extra.RedirectUrl = null;

            await Options.Provider.ReturnEndpoint(context);

            if (context.SignInAsAuthenticationType != null && context.Identity != null)
            {
                ClaimsIdentity signInIdentity = context.Identity;
                if (!string.Equals(signInIdentity.AuthenticationType, context.SignInAsAuthenticationType, StringComparison.Ordinal))
                {
                    signInIdentity = new ClaimsIdentity(signInIdentity.Claims, context.SignInAsAuthenticationType, signInIdentity.NameClaimType, signInIdentity.RoleClaimType);
                }
                Response.Grant(signInIdentity, context.Extra);
            }

            if (!context.IsRequestCompleted && context.RedirectUri != null)
            {
                Response.Redirect(context.RedirectUri);
                context.RequestCompleted();
            }

            return(context.IsRequestCompleted);
        }
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        public async Task <bool> InvokeReturnPathAsync()
        {
            AuthenticationTicket model = await AuthenticateAsync();

            if (model == null)
            {
                _logger.WriteWarning("Invalid return state, unable to redirect.");
                Response.StatusCode = 500;
                return(true);
            }

            var context = new GoogleReturnEndpointContext(Context, model);

            context.SignInAsAuthenticationType = Options.SignInAsAuthenticationType;
            context.RedirectUri          = model.Properties.RedirectUri;
            model.Properties.RedirectUri = null;

            await Options.Provider.ReturnEndpoint(context);

            if (context.SignInAsAuthenticationType != null && context.Identity != null)
            {
                ClaimsIdentity signInIdentity = context.Identity;
                if (!string.Equals(signInIdentity.AuthenticationType, context.SignInAsAuthenticationType, StringComparison.Ordinal))
                {
                    signInIdentity = new ClaimsIdentity(signInIdentity.Claims, context.SignInAsAuthenticationType, signInIdentity.NameClaimType, signInIdentity.RoleClaimType);
                }
                Context.Authentication.SignIn(context.Properties, signInIdentity);
            }

            if (!context.IsRequestCompleted && context.RedirectUri != null)
            {
                if (context.Identity == null)
                {
                    // add a redirect hint that sign-in failed in some way
                    context.RedirectUri = WebUtilities.AddQueryString(context.RedirectUri, "error", "access_denied");
                }
                Response.Redirect(context.RedirectUri);
                context.RequestCompleted();
            }

            return(context.IsRequestCompleted);
        }
 public virtual Task ReturnEndpoint(GoogleReturnEndpointContext context)
 {
     return OnReturnEndpoint(context);
 }
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 /// <summary>
 /// Invoked prior to the <see cref="System.Security.Claims.ClaimsIdentity"/> being saved in a local cookie and the browser being redirected to the originally requested URL.
 /// </summary>
 /// <param name="context">Contains information about the login session as well as the user <see cref="System.Security.Claims.ClaimsIdentity"/>.</param>
 /// <returns>A <see cref="Task"/> representing the completed operation.</returns>
 public virtual Task ReturnEndpoint(GoogleReturnEndpointContext context)
 {
     return(OnReturnEndpoint(context));
 }