2.2.1 PNRP Header
All PNRP Messages use the common header as follows.
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1 |
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2 |
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3 |
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FieldID |
Length |
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Identifier |
VersionMajor |
VersionMinor |
MessageType |
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Message ID |
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FieldID (2 bytes): The type of message. MUST be set to 0x0010 (PNRP_HEADER).
Length (2 bytes): The length, in bytes, of the PNRP Header. MUST be set to 0x000C.
Identifier (1 byte): MUST be set to 0x51.
VersionMajor (1 byte): Major version of protocol. MUST be set to 0x04.
VersionMinor (1 byte): Minor version of protocol. MUST be set to 0x00.
MessageType (1 byte): The type of message following the PNRP Header. MUST be one of the following.
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Value
Meaning
0x01
0x02
0x03
0x04
0x07
0x08
0x09
0x0B
Message ID (4 bytes): An arbitrary 32-bit value used for acknowledgment tracking. This value is generated by the protocol; the algorithm used to generate the Message ID value MUST minimize the probability of generating duplicate Message ID values within a window of time at least as large as the round-trip latency of a protocol message.