+------------------------------+
|      Protocol Version        |
+----------------------+-------+
| DDTPv1               |   1   |
| DDTPv2               |   2   |
+----------------------+-------+

+------------------------------+
|     Encryption Cipher        |
+----------------------+-------+
| Plaintext            |   1   |
| Blowfish             |   2   |
+------------------------------+

+------------------------------+
|        Packet Type           |
+----------------------+-------+
| Update Query         |   1   |
| Update Reply         |   2   |
| Alive Query          |   3   |
| Alive Reply          |   4   |
+----------------------+-------+

+------------------------------+
|      Update Reply Status     |
+----------------------+-------+
| Update Suceeded      |   0   |
| Update failed        |   1   |
| Invalid password     |   2   |
| Invalid account      |   3   |
| Invalid Opcode       |   4   |
+----------------------+-------+

+------------------------------+
|      Update Query Opcode     |
+----------------------+-------+
| Mark online          |   0   |
| Mark offline         |   1   |
| Mark static          |   2   |
+----------------------+-------+
