protected override Task AuthenticateServer(X509Certificate serverCertificate, bool clientCertificateRequired, bool checkCertificateRevocation)
{
return Task.Factory.FromAsync(
(callback, state) => _serverStream.BeginAuthenticateAsServer(serverCertificate, clientCertificateRequired, checkCertificateRevocation, callback, state),
_serverStream.EndAuthenticateAsServer,
state:null);
}
}