4.6.6.2 ROP Response Buffer
The server then returns a ROP response buffer that resembles the following.
0000: 48 00 00 00 00 00
The composition of the response buffer is as follows:
RopId: 0x48 (RopSpoolerLockMessageROP ([MS-OXCROPS] section 2.2.7.5))
InputHandleIndex: 0x00
ReturnValue: ecNone (success) (0x00000000)
