dime-3----Page:22
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
|
Duplicate Detection Duplicates can occur Due to Failover Nodes re-sending un-answered requests: Due to reboot Detection End-to-End Id is unique for a node Re-sent request must have T-flag set Therefore, use T-flag as a hint for possible duplication, then Use End-to-End Id and Origin-Host AVP to detect duplication Duplicate request SHOULD cause the same answer to be sent Other Considerations Use of Session-Id for duplicate detection in accounting records Time needed to wait for duplicate messages |