System.Net.Security.SecureChannel.CreateShutdownToken C# (CSharp) Method

        public ProtocolToken CreateShutdownToken()
        {
            if (NetEventSource.IsEnabled) NetEventSource.Enter(this);

            SecurityStatusPal status;
            status = SslStreamPal.ApplyShutdownToken(ref _credentialsHandle, _securityContext);

            if (status.ErrorCode != SecurityStatusPalErrorCode.OK)
            {
                if (NetEventSource.IsEnabled) NetEventSource.Info(this, $"ApplyAlertToken() returned {status.ErrorCode}");

                if (status.Exception != null)
                {
                    throw status.Exception;
                }

                return null;
            }

            ProtocolToken token = GenerateAlertToken();
            if (NetEventSource.IsEnabled) NetEventSource.Exit(this, token);
            return token;
        }