A UDP Based Protocol for Distributed P2P File Sharing

Some peer-to-peer (P2P) file sharing operation models over asymmetric networks have several shortcomings that may have a significant impact to the system and network performance: data transmission paths are highly redundant wasting a lot of backbone bandwidth; the download throughput in a peer node may be limited by the upward bandwidth of other peer nodes; TCP performance is deteriorated due to the blocking of acknowledge packets on the upward channel. These shortcomings severely impair the efficiency of P2P file sharing as well as network performance. We designed a UDP based transport mechanism at the application level to alleviate parts of problems caused by TCP