一种基于DHT的应用层多播方案

A DHT-based Application Layer Multicast Scheme

由于应用层多播相对于IP多播的易于部署，得到了国内外学术界的广泛研究。该文从经典的P2P搜索协议Chord入手，构建了基于P2P覆盖网的不定叉树，支持任意源多播，将节点的加入和根的发现结合起来，并对其网络动荡（节点加入与退出）实行制约限制，使网络环境保持基本稳定，达到负载平衡，并预测了本模型发展的方向。

Since the application layer multicast is easy to be deployed of relative to IP Multicast, it has been widely researched by domestic and foreign academic circles. This paper started from the classic P2P search protocol Chord to build an undefined-degree tree based on P2P overlay network which supports any-source multicast. This Scheme combined node joined operation with root discovery and constrained its network instability （nodes join and exit）, so that to maintain the basic stability of the network environment and achieve loadbalance. At the end, we forecasted the model development.