Measurement based PPStream client behavior analysis

PPStream is one of the most popular p2p media streaming applications. Our early study finds the design philosophy for both PPStream and PPLive is different. As a preliminary study for further deeply modeling, in this paper we try to study PPStream client behavior based on our recent measurement dataset. The report focuses on several aspects of peer: some specific mechanisms applied in the new version of PPStream client; overlay network environment of the system including the round-trip time, packet loss and replication; the concurrency of sessions, fetching buffer blocks and chunks; the chunk fetching behavior as well as the reciprocity between our client and its neighbors. We think our finds and discussions are of great values to further studies for researchers.