private void HandleReceiving()
        {
            try
            {
                string cmd      = this.sReader.ReadLine();
                string errorMsg = "";

                DateTime timeoutFrom = DateTime.Now;
                int      loopCounter = 0;
                TimeSpan span;
                int      timeoutSeconds;

                while (!receivedCmdContainer.CheckIfEmpty())
                {
                    loopCounter++;
                    if (loopCounter % 100 != 0)
                    {
                        continue;
                    }                                         //makes CheckIfEmpty() calling faster

                    span           = DateTime.Now - timeoutFrom;
                    timeoutSeconds = (int)span.Seconds;

                    if (timeoutSeconds > ReceivingInsertionTimeout)
                    {
                        throw new Exception("timeout - command container not released");
                    }
                }

                if (!receivedCmdContainer.InsertCommand(cmd))
                {
                    throw new Exception("cannot insert command to received command container");
                }
            }
            catch (Exception exception)
            {
                this.receivingInfoPacket.Obj = false;
                this.receivingInfoPacket.Msg = exception.Message;
            }
        }