private void OnNewBytes(int size)
{
try
{
// Debug support
if (Globals.TRACE_RECEIVE)
{
Logger.ExceptionLogger.LogMessage("TRACE: ReceiveDataHandler.OnNewBytes() [" + topic.GetName() + "], got " + size + " bytes");
}
bytesReceived += size - headerBytes.Length;
ReadByteBuffer readBuf = new ReadByteBuffer(headerBytes);
if (readBuf.CheckProtocol())
{
int nrOfFragments = readBuf.ReadInt();
int currentFragment = readBuf.ReadInt();
if (currentFragment == (nrOfFragments - 1) && currentFragment == expectedFragment)
{
// We have received a full message, let's deserialize it and send
// it to subscribers.
SendBytesToSubscribers(new ReadByteBuffer(bytes));
expectedFragment = 0;
bytesReceived = 0;
}
else
{
if (currentFragment == expectedFragment)
{
expectedFragment++;
}
else
{
// Not so good. Sample will be lost here.
if (Globals.REPORT_DATA_FRAGMENT_LOST_ERRORS)
{
Logger.ExceptionLogger.LogMessage(this.GetType().Name + ", Fragment error, sample lost");
}
expectedFragment = 0;
bytesReceived = 0;
}
}
}
}
catch (System.IO.IOException)
{
expectedFragment = 0;
}
}
private void SendBytesToSubscribers(ReadByteBuffer readBuf)
{
OPSArchiverIn archiverIn = new OPSArchiverIn(readBuf, this.participant.getObjectFactory());
OPSMessage message = null;
// If the proper typesupport has not been added, the message may have content, but some fields may be null. How do we handle this
// How do we make the user realize that he needs to add typesupport?
message = (OPSMessage) archiverIn.Inout("message", message);
//Console.WriteLine("Bytes received = " + bytesReceived);
//Console.WriteLine("Bytes read = " + readBuf.position());
if (message == null)
{
Logger.ExceptionLogger.LogMessage(this.GetType().Name + ", message was unexpectedly null");
return;
}
if (message.GetData() == null)
{
Logger.ExceptionLogger.LogMessage(this.GetType().Name + ", message.getData() was unexpectedly null");
return;
}
CalculateAndSetSpareBytes(message, readBuf, FRAGMENT_HEADER_SIZE, bytesReceived);
string IP = "";
int port = 0;
receiver.GetSource(ref IP, ref port);
message.SetSource(IP, port);
//TODO: error checking
foreach (Subscriber subscriber in subscribers)
{
try
{
subscriber.NotifyNewOPSMessage(message);
} catch (Exception ex)
{
Logger.ExceptionLogger.LogMessage(this.GetType().Name + ", Exception thrown in event notification thread " + ex.ToString());
}
}
}
private void CalculateAndSetSpareBytes(OPSMessage message, ReadByteBuffer readBuf, int segmentPaddingSize, int bytesReceived)
{
//NOT needed since 'bytesReceived' already is compensated for all headers and 'readBuf' is all data except header data
//// We must calculate how many unserialized segment headers we have and substract
//// that total header size from the size of spareBytes.
//int nrOfSerializedBytes = readBuf.Position();
//int totalNrOfSegments = (int) (bytesReceived /fragmentSize);
//int nrOfSerializedSegements = (int) (nrOfSerializedBytes /fragmentSize);
//int nrOfUnserializedSegments = totalNrOfSegments - nrOfSerializedSegements;
int nrOfSpareBytes = bytesReceived - readBuf.Position(); ///See comment above: -(nrOfUnserializedSegments * segmentPaddingSize);
if (nrOfSpareBytes > 0)
{
message.GetData().spareBytes = new byte[nrOfSpareBytes];
// This will read the rest of the bytes as raw bytes and put
// them into spareBytes field of data.
readBuf.ReadBytes(message.GetData().spareBytes);
}
}
