public void DataRequest(ushort targetShortAddr, ref Frame sdu, byte sduHandle, DataConfirmHandler handler)
{
if (!_started)
{
if (handler != null)
{
handler.Invoke(this, sduHandle, Status.NotRunning);
}
return;
}
if (targetShortAddr == _localShortAddress)
{
// deliver frame to ourself
if (handler != null)
{
handler.Invoke(this, sduHandle, Status.Success);
}
DataIndicationHandler ind = _dataIndicationHandler;
if (ind != null)
{
ind.Invoke(this, targetShortAddr, targetShortAddr, sdu);
sdu = null;
}
return;
}
DataRequestItem newItem = new DataRequestItem(targetShortAddr, ref sdu, sduHandle, handler);
OutboundFragmentationMessage outMsg = null;
bool queueFull = false;
lock (_lock)
{
// check if one can send directly the message.
if (null == _outboundAssociations.GetFragmentationMessage(_localShortAddress, targetShortAddr))
{
outMsg = CreateNewOutboundMessage(newItem);
}
else
{
// there is already a message being sent to this address. Store to queue.
if (!_dataRequestQueueSet.Add(newItem))
{
queueFull = true;
}
}
}
// release the lock before calling method in FragmentMessage class
if (outMsg != null)
{
outMsg.SendNextDataFragment(true);
}
else if (queueFull)
{
// queue is full.
if (handler != null)
{
handler.Invoke(this, sduHandle, Status.Busy);
}
newItem.Dispose();
}
}
