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2.2.5.3.1 Query Notifications Header

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This packet data stream header allows the client to specify that a notification is to be supplied on the results of the request. The contents of the header specify the information necessary for delivery of the notification. For more information about query notifications<11> functionality for a database server that supports SQL, see [MSDN-QUERYNOTE].

Stream Specific Rules: 

 NotifyId         =   USHORT UNICODESTREAM ; user specified value
                                           ; when subscribing to 
                                           ; query notifications
 SSBDeployment    =   USHORT UNICODESTREAM
 NotifyTimeout    =   ULONG                ; duration in which the query
                                           ; notification subscription
                                           ; is valid

The USHORT field defined within the NotifyId and SSBDeployment rules specifies the length, in bytes, of the actual data value, defined by the UNICODESTREAM, that follows it.<12> The time unit of NotifyTimeout is milliseconds.

Stream Definition: 

 HeaderData       =   NotifyId
                      SSBDeployment
                      [NotifyTimeout]