public void Authorize(Uri targetAddress)
{
if (targetAddress == null)
{
throw new ArgumentNullException(nameof(targetAddress));
}
string target = targetAddress.Host + targetAddress.AbsolutePath;
if (!target.StartsWith(Audience.TrimEnd(new char[] { '/' }), StringComparison.OrdinalIgnoreCase))
{
throw new UnauthorizedAccessException("Invalid target audience");
}
}