public async static Task<AuthorizeResponse> DoImplicitFlowAsync(Uri endpoint, string clientId, string scope, Uri callbackUri)
{
var client = new OAuth2Client(endpoint);
var startUri = client.CreateImplicitFlowUrl(
clientId,
scope,
callbackUri.AbsoluteUri);
try
{
var result = await WebAuthenticationBroker.AuthenticateAsync(
WebAuthenticationOptions.None,
new Uri(startUri));
switch (result.ResponseStatus)
{
case WebAuthenticationStatus.Success:
return new AuthorizeResponse(result.ResponseData);
case WebAuthenticationStatus.UserCancel:
throw new Exception("User cancelled authentication");
case WebAuthenticationStatus.ErrorHttp:
throw new Exception("HTTP Error returned by AuthenticateAsync() : " + result.ResponseErrorDetail.ToString());
default:
throw new Exception("Error returned by AuthenticateAsync() : " + result.ResponseStatus.ToString());
}
}
catch
{
// Bad Parameter, SSL/TLS Errors and Network Unavailable errors are to be handled here.
throw;
}
}