Opc.Ua.Bindings.TcpClientChannel.Shutdown C# (CSharp) Method

        private void Shutdown(ServiceResult reason)
        {
            lock (DataLock)
            {
                // clear an unprocessed chunks.
                SaveIntermediateChunk(0, new ArraySegment<byte>());

                // halt any scheduled tasks.
                if (m_handshakeTimer != null)
                {
                    m_handshakeTimer.Dispose();
                    m_handshakeTimer = null;
                }
                
                // halt any existing handshake.
                if (m_handshakeOperation != null && !m_handshakeOperation.IsCompleted)
                {
                    m_handshakeOperation.Fault(reason);
                }

                // cancel all requests.
                List<WriteOperation> operations = new List<WriteOperation>(m_requests.Values);

                foreach (WriteOperation operation in operations)
                {
                    operation.Fault(new ServiceResult(StatusCodes.BadSecureChannelClosed, reason));
                }

                m_requests.Clear();

                uint channelId = ChannelId;

                // dispose of the tokens.
                ChannelId = 0;
                DiscardTokens();

                // clear the handshake state.
                m_handshakeOperation = null;
                m_requestedToken = null;
                m_reconnecting = false;

                // close the socket.
                State = TcpChannelState.Closed;

                if (Socket != null)
                {
                    Utils.Trace("TCPCLIENTCHANNEL SOCKET CLOSED: {0:X8}, ChannelId={1}", Socket.Handle, channelId);
                    Socket.Close();
                    Socket = null;
                }

                // set the state.       
                ChannelStateChanged(TcpChannelState.Closed, reason);
            }
        }