ISP-driven practical P2P traffic control technique

We propose one practical approach to control BitTorrent traffic by exploiting existing features of BitTorrent: peer exchange (PEX) and tit-for-tat (TFT). For the traffic localization within target network domain, our approach injects a set of local peers (i.e., peers in the target network domain) to each local peer through PEX that allows BitTorrent clients to exchange their neighboring peer list with each other. In addition, we try to redirect unavoidable inter-domain traffic from transit link to peering link by affecting TFT strategy. We add an artificial delay to the inter-domain traffic of the transit link going to the local peers to affect TFT strategy. Our simulation shows that our approach achieves the traffic localization and redirects the inter-domain traffic while improving the content download performance.