bytes: Table 16.1 Header format for commands Byte # Content Description 0 0x47 Magic byte (’G’) 1 L div 256 High byte of L 2 L mod 256 Low byte of L • Every response from the server (return value or error responses Byte # Content Description 0 0x47 Magic byte (’G’) 1 error code 0 on success, 1 on error 2 L div 256 High byte of L 3 L mod 256 Low byte of L Tip If you don’t want to get your hands dirty: there