Xamarin Essentials WebAuthenticator.AuthenticateAsync method doesn't return any result - xamarin.forms

Question

I have added a WebAuthenticator.AuthenticateAsync method in my xamarin forms app with start up Url as "https://accounts.google.com/o/oauth2/auth"
and call back url as "myapp://"
I have also tried with call back url as "com.googleusercontent.apps.{clientId}:/oauth2redirect"
I am doing this to add google login in my xamarin forms app.
On this browser with available google accounts are been showing up and after successful completion of email authentication it returns to app but result is not returned from WebAuthenticator.AuthenticateAsync method.
On second time invocation of this method returns the first invocation result as cancelled by user and the browser opens again for second time email authentication.
But it works in ios.
I have added 3 classes
public class Auth0Client
{
private readonly OidcClient oidcClient;
public Auth0Client(Auth0ClientOptions options)
{
var discovery = new DiscoveryPolicy
{
ValidateEndpoints = false,
Authority = "https://accounts.google.com"
};
oidcClient = new OidcClient(new OidcClientOptions
{
Authority = $"https://accounts.google.com/o/oauth2/auth",
ClientId = options.ClientId,
Scope = options.Scope,
RedirectUri = options.RedirectUri,
Browser = options.Browser,
ProviderInformation = options.ProviderInformation,
Policy = new Policy
{
Discovery = discovery,
RequireAccessTokenHash = false
},
});
}
public IdentityModel.OidcClient.Browser.IBrowser Browser
{
get
{
return oidcClient.Options.Browser;
}
set
{
oidcClient.Options.Browser = value;
}
}
public async Task<LoginResult> LoginAsync()
{
return await oidcClient.LoginAsync();
}
}
public class Auth0ClientOptions
{
public Auth0ClientOptions()
{
}
public string Domain { get; set; }
public string ClientId { get; set; }
public string RedirectUri { get; set; }
public string Scope { get; set; }
public IBrowser Browser { get; set; }
public ProviderInformation ProviderInformation { get; set; }
}
public class WebBrowserAuthenticator : IBrowser
{
public async Task<BrowserResult> InvokeAsync(BrowserOptions options, CancellationToken cancellationToken = default)
{
try
{
WebAuthenticatorResult result = await WebAuthenticator.AuthenticateAsync(
new Uri(options.StartUrl),new Uri(options.EndUrl));
var url = new RequestUrl(options.EndUrl)
.Create(new Parameters(result.Properties));
return new BrowserResult
{
Response = url,
ResultType = BrowserResultType.Success
};
}
catch (Exception ex)
{
return new BrowserResult
{
ResultType = BrowserResultType.UserCancel,
ErrorDescription = "Login canceled by the user."
};
}
}
}
In view model we are creating authoclient
private async void NavigateToGoogleLogin(object obj)
{
string clientId = null;
string redirectUri = null;
switch (Device.RuntimePlatform)
{
case Device.iOS:
clientId = AppConstants.GoogleiOSClientId;
redirectUri = AppConstants.GoogleiOSRedirectUrl;
break;
case Device.Android:
clientId = AppConstants.GoogleAndroidClientId;
redirectUri = AppConstants.GoogleAndroidRedirectUrl;
break;
}
var auth0client = new Auth0Client(new Auth0ClientOptions()
{
Domain = "accounts.google.com/o/oauth2/auth",
ClientId = clientId,
RedirectUri = redirectUri,
Scope = AppConstants.GoogleScope,
Browser = new WebBrowserAuthenticator(),
ProviderInformation = new ProviderInformation
{
IssuerName = "accounts.google.com",
AuthorizeEndpoint = AppConstants.GoogleAuthorizeUrl,
TokenEndpoint = AppConstants.GoogleAccessTokenUrl,
UserInfoEndpoint = AppConstants.GoogleUserInfoUrl,
KeySet = new JsonWebKeySet(),
},
});
var loginResult = await auth0client.LoginAsync();
}
We are using below constants in authoclient object creation
internal static string GoogleScope = "https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/userinfo.profile";
internal static string GoogleAuthorizeUrl = "https://accounts.google.com/o/oauth2/auth";
internal static string GoogleAccessTokenUrl = "https://www.googleapis.com/oauth2/v4/token";
internal static string GoogleUserInfoUrl = "https://www.googleapis.com/oauth2/v3/userinfo";
Xamarin forms version:5.0.0.2012
Xamarin essentials: 1.7.3
Thanks in advance