2.2.2.1 Version PDU (MSG_SNDIN_VERSION)
The Version PDU is sent by the server and the client to negotiate which version of the protocol MUST be used.
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Header |
Version |
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Header (1 byte): A SNDIN_PDU header (section 2.2.1). The MessageId field of the SNDIN_PDU header MUST be set to MSG_SNDIN_VERSION (0x01).
Version (4 bytes): A 32-bit unsigned integer. This field specifies the protocol version used by the client or server that sent this PDU.
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Value
Meaning
0x00000001
Version 1
0x00000002
Version 2
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The advertised version affects the usage of the Format Change PDU (section 3.3.5.3.1).