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    Bug when sending segmented messages

    BACnet4J general discussion
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    • R
      robert bouwens
      last edited by

              if (segmentsRequired > request.getMaxSegmentsAccepted() || segmentsRequired > 128)
                  throw new BACnetException("Response too big to send to device; too many segments required:" + segmentsRequired + ", accepted: " + request.getMaxSegmentsAccepted());
      

      above the code to determine the amount of acceptable segment messages.

      the implementation for getMaxSegmentsAccepted is wrong. it is defined as a bitmap.
      so we should change that piece of code to:

          public int getMaxSegmentsAccepted() {
          	switch (maxSegmentsAccepted)
          	{
          	case 0:
          		return 64;
          	case 1:
          		return 2;
          	case 2:
          		return 4;
          	case 3:
          		return 8;
          	case 4:
          		return 16;
          	case 5:
          		return 32;
          	case 6:
          		return 64;
          	case 7:
          		return 128;
          	
          	}
          	// 3 bits - we can't get here
              return 64;
          }
      
      

      this is in the class ConfirmedRequest.

      regards
      robert

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