System.Net.ConnectStream.IOError C# (CSharp) Method

        private void IOError(Exception exception, bool willThrow)
        {
            GlobalLog.Enter("ConnectStream#" + ValidationHelper.HashString(this) + "::IOError", "Connection# " + ValidationHelper.HashString(m_Connection));
            GlobalLog.ThreadContract(ThreadKinds.Unknown, "ConnectStream#" + ValidationHelper.HashString(this) + "::IOError");

            string Msg;

            if (m_ErrorException == null)
            {
                if ( exception == null ) {
                    if ( !WriteStream ) {
                        Msg = SR.GetString(SR.net_io_readfailure, SR.GetString(SR.net_io_connectionclosed));
                    }
                    else {
                        Msg = SR.GetString(SR.net_io_writefailure, SR.GetString(SR.net_io_connectionclosed));
                    }

                    Interlocked.CompareExchange<Exception>(ref m_ErrorException, new IOException(Msg), null);
                }
                else
                {
                    willThrow &= Interlocked.CompareExchange<Exception>(ref m_ErrorException, exception, null) != null;
                }
            }

            m_ChunkEofRecvd = true;

            ConnectionReturnResult returnResult = null;

            if (WriteStream)
                m_Connection.HandleConnectStreamException(true, false, WebExceptionStatus.SendFailure, ref returnResult, m_ErrorException);
            else
                m_Connection.HandleConnectStreamException(false, true, WebExceptionStatus.ReceiveFailure, ref returnResult, m_ErrorException);


            CallDone(returnResult);

            GlobalLog.Leave("ConnectStream#" + ValidationHelper.HashString(this) + "::IOError");

            if (willThrow)
            {
                throw m_ErrorException;
            }
        }