| protected GetContentSize ( byte buf, int size ) : int? | ||
| buf | byte | |
| size | int | |
| return | int? | |
protected override int? GetContentSize(byte[] buf, int size)
{
// 0 = Start of message (0x7E) (already checked when we get here)
// 1 = Label
// 2 = Length LSB
// 3 = Length MSB
// 3+length = Payload
// n = End of message (0xE7)
// Need at least 3 bytes
if (size < 3)
{
return null;
}
this.label = buf[0];
return buf[1] + (buf[2] << 8) + 3; // 3 for label + length LSB/MSB
}
