2.2.1 TopologyPacketHeader
A TopologyPacketHeader packet is sent as the first element of every TopologyClientRequest (section 2.2.2) packet and every TopologyServerReply (section 2.2.3) packet.
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Version |
Type |
Reserved |
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Version (1 byte): An 8-bit value that specifies the TopologyPacketHeader version. MQSD clients MUST set all bit positions to 0. MQSD servers MUST ignore this field.
Type (1 byte): An 8-bit value that MUST specify the type of the packet that follows. The value 0x01 MUST be used to specify a TopologyClientRequest (section 2.2.2). The value 0x02 MUST be used to specify a TopologyServerReply (section 2.2.3).
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Value
Meaning
0x01
Specifies a TopologyClientRequest (section 2.2.2).
0x02
Specifies a TopologyServerReply (section 2.2.3).
Reserved (2 bytes): A 16-bit value that is not used. It MUST be set to 0x0000 by MQSD clients and MUST be ignored by MQSD servers.