void AddChecksum(OutputMessage message)
{
if (ChecksumEnabled)
{
uint checksum = Adler32(message.GetBuffer().ToArray(), (uint)message.GetBufferLength());
int pos = message.Tell();
message.Seek(0);
message.AddU32(checksum);
message.IncreaseHeaderLength(sizeof(uint));
message.Seek(pos + sizeof(uint));
}
}