2.2.4 CLNT_UCAST_DAC
The CLNT_UCAST_DAC packet request is used to determine the TCP [RFC793] port on which the Microsoft SQL Server dedicated administrator connection (DAC) [MSDN-DAC] endpoint is listening.
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CLNT_UCAST_DAC |
PROTOCOLVERSION |
INSTANCENAME (variable) |
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CLNT_UCAST_DAC (1 byte): A single byte whose value MUST be 0x0F.
PROTOCOLVERSION (1 byte): A single byte whose value MUST be 0x01.
INSTANCENAME (variable): A variable-length null-terminated multibyte character set (MBCS) string that does not need to be byte-aligned. It MUST be no greater than 32 bytes in length, not including the null terminator.