internal virtual bool accumulate(
int frameNumber, int headerSize, IncomingFrame frame)
{
if (frameNumber == 1)
{
// this is the first frame for this message
// (the header size is taken from the first frame only,
// information from other frames is ignored)
messageHeaderSize = headerSize;
}
int realFrameNumber;
if (frameNumber >= 0)
{
realFrameNumber = frameNumber;
}
else
{
// the given frame is a closing one
realFrameNumber = -frameNumber;
messageLastFrameNumber = realFrameNumber;
}
if (frames.Keys.Contains(realFrameNumber))
{
// the frame with the same number was already store
// - treat it as malformed network junk
throw new UnexpectedValueException(
"Corrupted message received.");
}
frames.Add(realFrameNumber, frame);
if (messageLastFrameNumber != 0)
{
// the last frame was already stored for this message
// - the message is complete if all other frames
// are already collected
return(frames.Count == messageLastFrameNumber);
}
// the last frame was not yet received
// - the message is not complete
return(false);
}
internal virtual bool accumulate(
int frameNumber, int headerSize, IncomingFrame frame)
{
if (frameNumber == 1)
{
// this is the first frame for this message
// (the header size is taken from the first frame only,
// information from other frames is ignored)
messageHeaderSize = headerSize;
}
int realFrameNumber;
if (frameNumber >= 0)
{
realFrameNumber = frameNumber;
}
else
{
// the given frame is a closing one
realFrameNumber = -frameNumber;
messageLastFrameNumber = realFrameNumber;
}
if(frames.Keys.Contains(realFrameNumber))
{
// the frame with the same number was already store
// - treat it as malformed network junk
throw new UnexpectedValueException(
"Corrupted message received.");
}
frames.Add(realFrameNumber, frame);
if (messageLastFrameNumber != 0)
{
// the last frame was already stored for this message
// - the message is complete if all other frames
// are already collected
return frames.Count == messageLastFrameNumber;
}
// the last frame was not yet received
// - the message is not complete
return false;
}
private void createCurrentIncomingFrame(int payloadSize)
{
currentIncomingFrame = new IncomingFrame(payloadSize);
}
internal virtual void getAllBuffers(
IList <byte[]> headerBuffers, IList <byte[]> bodyBuffers)
{
int remainedForHeader = messageHeaderSize;
for (int frameNumber = 1;
frameNumber <= messageLastFrameNumber;
++frameNumber)
{
IncomingFrame frame = frames[Convert.ToInt32(frameNumber)];
byte[] frameData = frame.data;
int frameDataLength = frameData.Length;
if (remainedForHeader > 0)
{
// there is still some header data to be collected
if (frameDataLength > remainedForHeader)
{
// this frame needs to be split
// between header and body parts
byte[] headerPart = new byte[remainedForHeader];
Array.Copy(frameData, headerPart, remainedForHeader);
byte[] bodyPart =
new byte[frameDataLength - remainedForHeader];
Array.Copy(
frameData, remainedForHeader,
bodyPart, 0, bodyPart.Length
);
headerBuffers.Add(headerPart);
bodyBuffers.Add(bodyPart);
remainedForHeader -= headerPart.Length;
}
else
{
// this frame contains only header data
headerBuffers.Add(frameData);
remainedForHeader -= frameDataLength;
}
}
else
{
// this frame contains only body data
bodyBuffers.Add(frameData);
}
}
if (remainedForHeader > 0)
{
// the collection of frames does not have enough data
// for the message header
throw new UnexpectedValueException(
"Corrupted message received.");
}
}
private void createCurrentIncomingFrame(int payloadSize)
{
currentIncomingFrame = new IncomingFrame(payloadSize);
}
