readChecksum(buf, checksumOff, checksumDataLen);
readChecksum(buf, checksumOff, checksumDataLen);
readChecksum(buf, checksumOff, checksumDataLen);
readChecksum(buf, checksumOff, checksumDataLen);
readChecksum(buf, checksumOff, checksumDataLen);
readChecksum(buf, checksumOff, checksumDataLen);