private async Task <OAuthToken> GetTokenInnerAsync(string realm, string service, string scope, string username,
string password, CancellationToken cancellationToken = new CancellationToken())
{
var queryString = new QueryString();
queryString.AddIfNotEmpty("service", service);
queryString.AddIfNotEmpty("scope", scope);
UriBuilder builder = new UriBuilder(new Uri(realm))
{
Query = queryString.GetQueryString()
};
var request = new HttpRequestMessage(HttpMethod.Get, builder.Uri);
if (username != null && password != null)
{
// https://gist.github.com/jlhawn/8f218e7c0b14c941c41f
var bytes = Encoding.UTF8.GetBytes($"{username}:{password}");
string parameter = Convert.ToBase64String(bytes);
request.Headers.Authorization = new AuthenticationHeaderValue("Basic", parameter);
}
using (var response = await _client.SendAsync(request, cancellationToken))
{
string body = await response.Content.ReadAsStringAsync();
var token = JsonConvert.DeserializeObject <OAuthToken>(body);
return(token);
}
}
