public bool CheckDataSegment(DataSegment dataSegment)
{
if (dataSegment == null)
{
return(false);
}
return(CrcHash.Compute(dataSegment.DataString).ToString(CultureInfo.InvariantCulture) == dataSegment.Crccode);
}
public DataParameter BuildDataParameter <T>(int actionId, T data)
{
var parameter = new DataParameter {
Action = actionId
};
parameter.DataString = ProcessToString(data);
parameter.CrcCode = CrcHash.Compute(parameter.DataString).ToString(CultureInfo.InvariantCulture);
return(parameter);
}
public CrcHash(uint polynomial)
{
HashSizeValue = 32;
_crc32Table = (uint[])_crc32TablesCache[polynomial];
if (_crc32Table == null)
{
_crc32Table = CrcHash._buildCRC32Table(polynomial);
_crc32TablesCache.Add(polynomial, _crc32Table);
}
Initialize();
}
public DataSegment BuildDataSegment(int index, string dataId, int dataLength, int dataCount, string content)
{
var beginPos = index * dataLength;
var legth = index == dataCount - 1 ? content.Length - beginPos : dataLength;
var data = content.Substring(beginPos, legth);
var dataSegment = new DataSegment();
dataSegment.DataId = dataId;
dataSegment.Crccode = CrcHash.Compute(data).ToString(CultureInfo.InvariantCulture);
dataSegment.DataString = data;
dataSegment.Index = index;
return(dataSegment);
}
// static constructor
static CrcHash()
{
_crc32TablesCache = Hashtable.Synchronized(new Hashtable());
_defaultCRC = new CrcHash();
}