/// <summary>
/// Retrieve access token for the configured "client_id" and specified scopes. Request to the server is only performed if matching valid token is not in the cache
/// </summary>
/// <param name="scopes">OAuth2 scopes to request</param>
/// <param name="token">Cancellation token</param>
/// <returns>Access token</returns>
/// <exception cref="TokenEndpointException">Exception during token endpoint communication</exception>
public Task <string> GetTokenAsync(string[] scopes, CancellationToken token = default(CancellationToken))
{
var cacheKey = string.Join(":", _partialCacheKey, ScopeHelper.ToScopeString(scopes));
return(_cache.GetOrCreateAsync(cacheKey,
ct => _customGrantTokenClient.GetTokenInternalAsync(new List <KeyValuePair <string, string> >(), scopes, ct),
token));
}
/// <summary>
/// Retrieve access token for the configured "client_id", specified scope and resource
/// </summary>
/// <param name="parameters">Custom grant parameters</param>
/// <param name="token">Cancellation token</param>
/// <returns>Access token</returns>
/// <exception cref="TokenEndpointException">Exception during token endpoint communication</exception>
public async Task <string> GetTokenAsync(ResourceScopedAccessGrantParameters parameters, CancellationToken token = default(CancellationToken))
{
var result = await _customGrantTokenClient.GetTokenInternalAsync(GetPostParams(parameters), new [] { parameters.Scope }, token).ConfigureAwait(false);
return(result.Item1);
}