internal InboundFragmentationMessage(
UInt16 source,
UInt16 destination,
byte sequenceNumber,
DataRequestHandler lowerLayerRequestHandler,
int maxPduSize,
int reservedHeaderSize,
int reservedTailSize,
FragmentationMessageTimer timer)
: base(source, destination, sequenceNumber, lowerLayerRequestHandler, maxPduSize, reservedHeaderSize, reservedTailSize, timer)
{
}
public void Start(UInt16 localAddress)
{
lock (_lock)
{
if (_started)
{
Stop();
}
_localShortAddress = localAddress;
_outboundAssociations = new FragmentationMessageAssociationSet();
_inboundAssociations = new FragmentationMessageAssociationSet();
_dataRequestQueueEvent = new AutoResetEvent(false);
_dataRequestQueueSet = new DataRequestQueueSet(_maxRequestNumberPerDestination, _dataRequestQueueEvent);
_started = true;
_timer = new FragmentationMessageTimer(50);
_transmissionCharacteristicStorage = new TransmissionCharacteristicStorage();
}
}
public void Start(UInt16 localAddress)
{
lock (_lock)
{
if (_started)
{
Stop();
}
_localShortAddress = localAddress;
_outboundAssociations = new FragmentationMessageAssociationSet();
_inboundAssociations = new FragmentationMessageAssociationSet();
_dataRequestQueueEvent = new AutoResetEvent(false);
_dataRequestQueueSet = new DataRequestQueueSet(_maxRequestNumberPerDestination, _dataRequestQueueEvent);
_started = true;
_timer = new FragmentationMessageTimer(50);
_transmissionCharacteristicStorage = new TransmissionCharacteristicStorage();
}
}
internal FragmentationMessage(
UInt16 source,
UInt16 destination,
byte messageSeqNumber,
DataRequestHandler lowerLayerRequestHandler,
int maxPduSize,
int reservedHeaderSize,
int reservedTailSize,
FragmentationMessageTimer timer)
{
_timer = timer;
_lowerLayerRequestHandler = lowerLayerRequestHandler;
_currentState = FragmentationMessageState.Initial;
_source = source;
_destination = destination;
_messageSeqNumber = messageSeqNumber;
_lock = new object();
_timeoutTicks = long.MaxValue;
_maxPduSize = maxPduSize;
_reservedHeaderSize = reservedHeaderSize;
_reservedTailSize = reservedTailSize;
_lastFragmentSeqNumberReceived = 0xFF;
_lastFragmentSeqNumberSent = 0xFF;
}
internal OutboundFragmentationMessage(
UInt16 source,
UInt16 destination,
byte messageSeqNumber,
DataRequestHandler lowerLayerRequestHandler,
ref Frame sdu,
Byte sduHandle,
DataConfirmHandler handler,
int maxPduSize,
int reservedHeaderSize,
int reservedTailSize,
FragmentationMessageTimer timer
)
: base(source, destination, messageSeqNumber, lowerLayerRequestHandler, maxPduSize, reservedHeaderSize, reservedTailSize, timer)
{
if (sdu.LengthDataUsed == 0)
{
Frame.Release(ref sdu);
throw new ArgumentException("sdu is empty", "sdu");
}
int payloadSize = maxPduSize - 2 - 2; // 2 for our own header, 1 for nb fragment, 1 for fragment id
if (payloadSize == 0)
{
Frame.Release(ref sdu);
throw new ArgumentException("PDU is too small", "maxPduSize");
}
ushort flag = (ushort)(1 << 15);
_isBroadcast = (destination & flag) > 0 ? true : false;
_sdu = sdu;
sdu = null;
_sduHandle = sduHandle;
_dataConfirmHandler = handler;
_messageSeqNumber = messageSeqNumber;
_timeoutForResending = c_defaultTimeoutForResending;
_maxFragmentsBeforeAck = c_defaultMaxFragmentsBeforeAck;
// compute required nb fragments and respective indices.
int nbFragments = ((_sdu.LengthDataUsed % payloadSize) == 0) ? _sdu.LengthDataUsed / payloadSize : 1 + _sdu.LengthDataUsed / payloadSize;
if (nbFragments > byte.MaxValue)
{
throw new ArgumentException("sdu is too large.");
}
_nbFragments = (byte)nbFragments;
_endingIndices = new int[_nbFragments];
int lastIndex = -1;
for (int i = 0; i + 1 < _nbFragments; i++)
{
lastIndex += payloadSize;
_endingIndices[i] = lastIndex;
}
lastIndex += ((_sdu.LengthDataUsed % payloadSize) == 0) ? payloadSize : _sdu.LengthDataUsed % payloadSize;
_endingIndices[_nbFragments - 1] = lastIndex;
_successfullyTransmittedFragments = new BitArray(_nbFragments, false);
_lastFragmentSent = new BitArray(_nbFragments, false);
}
internal InboundFragmentationMessage(
UInt16 source,
UInt16 destination,
byte sequenceNumber,
DataRequestHandler lowerLayerRequestHandler,
int maxPduSize,
int reservedHeaderSize,
int reservedTailSize,
FragmentationMessageTimer timer)
: base(source, destination, sequenceNumber, lowerLayerRequestHandler, maxPduSize, reservedHeaderSize, reservedTailSize, timer)
{
}
internal OutboundFragmentationMessage(
UInt16 source,
UInt16 destination,
byte messageSeqNumber,
DataRequestHandler lowerLayerRequestHandler,
ref Frame sdu,
Byte sduHandle,
DataConfirmHandler handler,
int maxPduSize,
int reservedHeaderSize,
int reservedTailSize,
FragmentationMessageTimer timer
)
: base(source, destination, messageSeqNumber, lowerLayerRequestHandler, maxPduSize, reservedHeaderSize, reservedTailSize, timer)
{
if (sdu.LengthDataUsed == 0)
{
Frame.Release(ref sdu);
throw new ArgumentException("sdu is empty", "sdu");
}
int payloadSize = maxPduSize - 2 - 2; // 2 for our own header, 1 for nb fragment, 1 for fragment id
if (payloadSize == 0)
{
Frame.Release(ref sdu);
throw new ArgumentException("PDU is too small", "maxPduSize");
}
ushort flag = (ushort)(1 << 15);
_isBroadcast = (destination & flag) > 0 ? true : false;
_sdu = sdu;
sdu = null;
_sduHandle = sduHandle;
_dataConfirmHandler = handler;
_messageSeqNumber = messageSeqNumber;
_timeoutForResending = c_defaultTimeoutForResending;
_maxFragmentsBeforeAck = c_defaultMaxFragmentsBeforeAck;
// compute required nb fragments and respective indices.
int nbFragments = ((_sdu.LengthDataUsed % payloadSize) == 0) ? _sdu.LengthDataUsed / payloadSize : 1 + _sdu.LengthDataUsed / payloadSize;
if (nbFragments > byte.MaxValue)
throw new ArgumentException("sdu is too large.");
_nbFragments = (byte)nbFragments;
_endingIndices = new int[_nbFragments];
int lastIndex = -1;
for (int i = 0; i + 1 < _nbFragments; i++)
{
lastIndex += payloadSize;
_endingIndices[i] = lastIndex;
}
lastIndex += ((_sdu.LengthDataUsed % payloadSize) == 0) ? payloadSize : _sdu.LengthDataUsed % payloadSize;
_endingIndices[_nbFragments - 1] = lastIndex;
_successfullyTransmittedFragments = new BitArray(_nbFragments, false);
_lastFragmentSent = new BitArray(_nbFragments, false);
}
internal FragmentationMessage(
UInt16 source,
UInt16 destination,
byte messageSeqNumber,
DataRequestHandler lowerLayerRequestHandler,
int maxPduSize,
int reservedHeaderSize,
int reservedTailSize,
FragmentationMessageTimer timer)
{
_timer = timer;
_lowerLayerRequestHandler = lowerLayerRequestHandler;
_currentState = FragmentationMessageState.Initial;
_source = source;
_destination = destination;
_messageSeqNumber = messageSeqNumber;
_lock = new object();
_timeoutTicks = long.MaxValue;
_maxPduSize = maxPduSize;
_reservedHeaderSize = reservedHeaderSize;
_reservedTailSize = reservedTailSize;
_lastFragmentSeqNumberReceived = 0xFF;
_lastFragmentSeqNumberSent = 0xFF;
}
