All output responses have the following header format (Each Cell is a Byte)
| 0x0 | 0x01 | 0x02 | 0x03 |
|---|---|---|---|
| Protocol Version | Error Code | Transaction ID | Transaction ID |
Exchange Protocol Specified in the original Request.
Value of 0x00 means no Error. Else see the Error Response
Transaction ID from the original Request header.
If the value of the Error Code is 0x00, it's safe to assume at least 4 more bytes exist,
which may or may not contain more response information, please see the specific
API's Spec for precise details.