Method and system for transport protocol reconstruction and timer synchronization for non-intrusive capturing and analysis of packets on a high-speed distributed network
US7349400B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 29, 2003 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | May 30, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/326
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A transport protocol data flow reconstruction method delays determination that a missing packet is lost for a period of time. For an evaluated TCP packet in a first direction, the method determines if a TCP packet is missing in a second direction, in which case the method stores the evaluated TCP packet in a list and creates an acknowledgement timer indicating a maximum time to wait until treating the missing TCP packet as lost. Expiration of the acknowledgment timer indicates a missing packet in the second direction. The method determines if a TCP packet is missing in the first direction, in which case the method stores the evaluated TCP packet in the list and creates a retransmission timer indicating a maximum time to wait until treating the missing TCP packet as lost. Expiration of the retransmission timer indicates a missing packet in the first direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.