2.2.2.1 Select Version Request
The Select Version Request message is sent by the client over the device enumeration channel to allow the server to select the protocol version. The client MUST set the Version field to the maximum version number supported. In response the server MUST send the Select Version Response (section 2.2.2.2) message.
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Header (2 bytes): A SHARED_MSG_HEADER (section 2.2.1) structure. The Version field MUST be set to the maximum version number supported by the client. The MessageId field MUST be set to SelectVersionRequest (3).