internal ReceiveProcessor()
{
_currentStepReadBuffer = FrameFormat.EmptyBytes;
_readBufferCache = new byte[NetworkSettings.ReadBufferSize];
_tempFrameHeaderData = new FrameHeaderData();
}
internal void Reset()
{
_unprocessCount = 0;
_bufferStartIndex = 0;
_messageBytesReadLength = 0;
_headerExtentionBytes = FrameFormat.EmptyBytes;
_titleBytes = FrameFormat.EmptyBytes;
_contentBytes = FrameFormat.EmptyBytes;
_currentFrameHeaderData = null;
}
internal ReceiveProcessor()
{
_readBuffer = new byte[NetworkSettings.ReadBufferSize];
_tempFrameHeaderData = new FrameHeaderData();
}
internal int CheckCurrentStep(int readCount)
{
_messageBytesReadLength += readCount;
_bufferStartIndex += readCount;
if (_currentFrameHeaderData == null)
{
if (_messageBytesReadLength < FrameFormat.FrameHeaderSize)
{
return(0);
}
if (FrameFormat.CheckFrameHeader(_readBuffer) == false)
{
return(-1);
}
var frameHeaderData = _tempFrameHeaderData;
FrameFormat.ReadDataFromHeaderBuffer(_readBuffer, ref frameHeaderData);
_headerExtentionLength = frameHeaderData.HeaderExtentionLength;
_titleLength = frameHeaderData.TitleLength;
_contentLength = frameHeaderData.ContentLength;
_stateCode = frameHeaderData.StateCode;
_messageId = frameHeaderData.MessageId;
_currentFrameHeaderData = frameHeaderData;
_headerExtentionBytes = _headerExtentionLength == 0 ? FrameFormat.EmptyBytes : new byte[_headerExtentionLength];
_titleBytes = _titleLength == 0 ? FrameFormat.EmptyBytes : new byte[_titleLength];
_contentBytes = _contentLength == 0 ? FrameFormat.EmptyBytes : new byte[_contentLength];
if (GetBodyLength() == 0)
{
return(_messageBytesReadLength == FrameFormat.FrameHeaderSize ? 1 : -1);
}
readCount = readCount - FrameFormat.FrameHeaderSize;
}
_unprocessCount += readCount;
var messageLength = GetBodyLength() + FrameFormat.FrameHeaderSize;
// message format error,return error code
if (_messageBytesReadLength > messageLength)
{
return(-1);
}
// read datas and return success code
if (_messageBytesReadLength == messageLength)
{
ReadBufferDatas(_unprocessCount);
return(1);
}
// message is not complete,return continue-reading code
// if buffer is full,move datas to cache and clear buffer
if (_bufferStartIndex == _readBuffer.Length)
{
ReadBufferDatas(_unprocessCount);
_unprocessCount = 0;
_bufferStartIndex = 0;
}
//continue to read
return(0);
}
