![]() IIM incentivizes seeding and mitigates problems of unfairness and exploitation while at the same time achieving linear scalability. We introduce a centralized extension for the BitTorrent protocol which we refer to as the indirect interaction mechanism (IIM). We demonstrate through measurements that BitTorrent peers are able to barter pieces of different files (indirect interaction) which is a previously unknown property The need to design scalable mechanisms that mitigate such problems is evident. Current solutions like reputation systems and sharing ratio enforcement are complex, exploitable, inaccurate or unfair at times. Many peers freeride on the good intentions of others and BitTorrent is no exception. The fundamental problem with P2P networks in general is that quality of service highly depends on altruistic resource sharing by participating peers. BitTorrent has turned into the most popular P2P file sharing protocol and is used for various purposes such as Video on Demand and Media Streaming. ![]()
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