private async Task <bool> RenewTokensAsync(CancellationToken cancellationToken)
{
if (await _lock.WaitAsync(Timeout, cancellationToken).ConfigureAwait(false))
{
try
{
var response = await _tokenClient.RequestClientCredentialsAsync(_scope, cancellationToken : cancellationToken).ConfigureAwait(false);
if (!response.IsError)
{
_accessToken = response.AccessToken;
#pragma warning disable 4014
Task.Run(() =>
{
foreach (EventHandler <TokenRenewedEventArgs> del in TokenRenewed.GetInvocationList())
{
try
{
del(this, new TokenRenewedEventArgs(response.AccessToken, response.ExpiresIn));
}
catch { }
}
}).ConfigureAwait(false);
#pragma warning restore 4014
return(true);
}
}
finally
{
_lock.Release();
}
}
return(false);
}