11.6.3. Response Header

When using Hot Rod to access JBoss Data Grid, the contents of the response header consist of the following:

Table 11.3. Response Header Fields
Field Name	Data Type	Details
Magic	1 byte	Indicates whether the header is a request or response header.
Message ID	vLong	Contains the message ID. This unique ID is used to pair the response with the original request. This allows Hot Rod clients to implement the protocol in an asynchronous manner.
Opcode	1 byte	Contains the relevant operation code. In a response header, opcode can only contain the response operation codes.
Status	1 byte	Contains a code that represents the status of the response.
Topology Change Marker	1 byte	Contains a marker byte that indicates whether the response is included in the topology change information.

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