2.2.1 Packet Header
Each packet of the WDS Multicast Application Protocol MUST specify the packet header as follows:
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2 |
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Packet-Size |
OpCode |
Packet-specific fields (variable) |
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Packet-Size (2 bytes): Specifies the total length of the packet in bytes.
OpCode (1 byte): A unique numeric value that is assigned to each packet of WDS Multicast Application Protocol and is used to identify the format for the rest of the packet.
Packet-specific fields (variable): Based on the OpCode field of the packet header, additional fields can be specified for each OpCode as shown in the following table:
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OpCode
Meaning
WDSMC_PKTYPE_SRV_CIR
0x01
Section 2.2.2
WDSMC_PKTYPE_CNT_CIR
0x02
Section 2.2.3
WDSMC_PKTYPE_SRV_DATA
0x03
Section 2.2.4
WDSMC_PKTYPE_CNT_PROGRESS
0x04
Section 2.2.5