private void CheckMessageLength()
{
byte[] lenHdr = new byte[_msgCfg.LengthHeader];
Array.Copy(_bytes, 0, lenHdr, 0, _msgCfg.LengthHeader);
int length = (int)MessageUtility.BytesToInt(lenHdr);
if (_bytes.Length - _msgCfg.LengthHeader != length)
{
throw new MessageParserException("Incompatible length header value with the actual message length.");
}
_token += _msgCfg.LengthHeader;
}
private byte[] Receive()
{
if (MessageStream == null)
{
return(null);
}
int readLength = config.MaskConfig.MinBytesCountToCheck;
byte[] checkData = new byte[readLength];
int offset = 0, numberReadData = 0;
do
{
numberReadData = MessageStream.Receive(checkData, offset, readLength);
offset += numberReadData;
readLength -= numberReadData;
} while (readLength > 0 && numberReadData > 0);
config.MessageToModelConfig cfg = config.MessageConfigs.GetQulifiedMessageToModel(checkData);
MessageToModelConfig = cfg;
if (cfg == null)
{
throw new MessageProcessorException("Unrecognized message. Check message-to-model elements in configuration file."
+ Environment.NewLine
+ readLength + " first bytes of message: " + MessageUtility.HexToReadableString(checkData));
}
byte[] lengthHeader = new byte[cfg.ModelCfg.MessageCfg.LengthHeader];
Array.Copy(checkData, lengthHeader, lengthHeader.Length);
int messageLength = (int)MessageUtility.BytesToInt(lengthHeader);
messageLength += lengthHeader.Length;
byte[] data = new byte[messageLength];
Array.Copy(checkData, data, checkData.Length);
offset = checkData.Length;
readLength = messageLength - checkData.Length;
do
{
numberReadData = MessageStream.Receive(data, offset, readLength);
offset += numberReadData;
readLength -= numberReadData;
} while (readLength > 0 && numberReadData > 0);
return(data);
}