On transport layer support for peer-to-peer networks

Authors:
Hung-Yun Hsieh;Raghupathy Sivakumar
Affiliations:
School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA;School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA
Venue:
IPTPS'04 Proceedings of the Third international conference on Peer-to-Peer Systems
Year:
2004

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Abstract

TCP is the transport protocol used predominantly in the Internet as well as in peer-to-peer networks. However, peer-to-peer networks exhibit very different characteristics from those of conventional client-server networks. In this paper, we argue that the unique characteristics of peer-to-peer networks render TCP inappropriate for effective data transport in such networks. Specifically, we motivate transport layer support for multipoint-to-point connections to address the problem of sources in peer-to-peer networks lacking server-like properties in terms of capacity and availability. We outline several key elements in designing a new transport protocol for supporting effective multipoint-to-point connections. Finally, we present a case study for a multipoint-to-point transport protocol that puts together these design elements in practice. We thus motivate further research along this direction.