2.2.9.1.1.1 Usage Data Header Structure
The Usage Data Header describes the information contained by the Usage Data Binary Field structure.
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byte1 |
byte2 |
byte3 |
byte4 |
|---|---|---|---|
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Size |
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Update Counter |
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Page Data Offset |
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User Data Offset |
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Operating System Data Offset |
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Browser Data Offset |
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Referrer Data Offset |
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Reserved 1 |
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… |
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Page Data Count |
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User Data Count |
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Operating System Data Count |
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Browser Data Count |
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Referrer Data Count |
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Reserved 2 |
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|
… |
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Last Accessed Day |
Rollover Day |
Reserved 3 |
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|
… |
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… |
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… |
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Size (4 bytes): An unsigned integer that specifies the number of bytes contained by the structure.
Update Counter (4 bytes): An unsigned integer describing the number of times that the structure has been stored.
Page Data Offset (4 bytes): An unsigned integer that counts the number of bytes from the start of the structure to the start of the Page Data.
User Data Offset (4 bytes): An unsigned integer that counts the number of bytes from the start of the structure to the start of the User Data.
Operating System Data Offset (4 bytes): An unsigned integer that counts the number of bytes from the start of the structure to the start of the Operating System Data.
Browser Data Offset (4 bytes): An unsigned integer that counts the number of bytes from the start of the structure to the start of the Browser Data.
Referrer Data Offset (4 bytes): An unsigned integer that counts the number of bytes from the start of the structure to the start of the Browser Data.
Reserved 1 (8 bytes): MUST be ignored by reader.
Page Data Count (4 bytes): An unsigned integer that counts the number of entries of Page Data.
User Data Count (4 bytes): An unsigned integer that counts the number of entries of User Data.
Operating System Data Count (4 bytes): An unsigned integer that counts the number of entries of Operating System Data.
Browser Data Count (4 bytes): An unsigned integer that counts the number of entries of Browser Data.
Referrer Data Count (4 bytes): An unsigned integer that counts the number of entries of Referrer Data.
Reserved 2 (8 bytes): MUST be ignored by reader.
Last Accessed Day (2 bytes): An unsigned integer that contains the number of days since 1/1/1899 to the day that the structure was last stored.
Rollover Day (1 byte): An unsigned integer that specifies the rollover day of usage data from daily data into monthly data. The value MUST be between 1 and 27 (inclusive).
Reserved 3 (33 bytes): MUST be ignored by reader.