关键词: 被动测量;应用层特征;流匹配

Abstract:

For the issue of the passive measurement of BitTorrent protocol,the framework of flow-based match does not require each packet to match the application layer,instead the BT application-level features are taken as the logo of BT streams,that is,the implementation of BT stream real-time measurement based on application layer features.This method has good accuracy and scalability,high efficiency and low rates of conflict.Through the establishment of the omissions algorithm model,the relationship between the feature packet and the length of flow is also analyzed,which indicate that the focus should be put on the application layer features of long-flow.

Key words: passive measurement;application-level feature;flow-based match