
+---------------------------------------------------------------+
|                      Header (16 bits)                         |
|    +   4 bytes  +   4 bytes  +  4 bytes  +  4 bytes  +        |
|    +------------+------------+-----------+-----------+        |
|    |   Command  | length-low |   offset  | length-hi |        |
|    +------------+------------+-----------+-----------+        |
+---------------------------------------------------------------+
|         Data Part                                             |
|   +-------------------------------------------------------+   |
|   |                  Header (4 bytes)                     |   |
|   |  Type (1 byte) : DT_*  Length (3 bytes)               |   |
|   +-------------------------------------------------------+   |
|   + Data (length bytes)                                   |   |
|   +-------------------------------------------------------+   |
|   +-------------------------------------------------------+   |
|   |                  Header (4 bytes)                     |   |
|   |  Type (1 byte) : DT_*  Length (3 bytes)               |   |
|   +-------------------------------------------------------+   |
|   + Data (length bytes)                                   |   |
|   +-------------------------------------------------------+   |
