CAJ | 학술논문

P2P IPTV网络测量是研究P2P IPTV行为和特征的重要手段,不仅有利于设计出更符合真实网络环境的系统或协议,也是实现P2P IPTV监测、引导和控制等方面的重要依据和基础.爬行器是P2P IPTV网络的一种主动测量技术,也是目前P2P IPTV测量的主要方式之一.提出了一个P2P IPTV多协议爬行器--TVCrawler,能够对PPLive、PPStream和UUSee三个系统的直播频道进行测量.TVCrawler主要具有三个特点:1)采用基于反馈的引导节点集构造机制;2)采用主从结构,并行爬行获取拓扑数据;3)采用基于拓扑增长系数的自适应爬行时长控制.实验表明,TVCrawler的爬行测量速度达到20～100节点/秒和130～500边/秒.
P2P IPTV망락측량시연구P2P IPTV행위화특정적중요수단,불부유리우설계출경부합진실망락배경적계통혹협의,야시실현P2P IPTV감측、인도화공제등방면적중요의거화기출.파행기시P2P IPTV망락적일충주동측량기술,야시목전P2P IPTV측량적주요방식지일.제출료일개P2P IPTV다협의파행기--TVCrawler,능구대PPLive、PPStream화UUSee삼개계통적직파빈도진행측량.TVCrawler주요구유삼개특점:1)채용기우반궤적인도절점집구조궤제;2)채용주종결구,병행파행획취탁복수거;3)채용기우탁복증장계수적자괄응파행시장공제.실험표명,TVCrawler적파행측량속도체도20～100절점/초화130～500변/초.
Network measurement is a significant means of Peer-to-Peer (P2P) IPTV research. It can not only help design IPTV systems or protocols more fit for the network in reality, but also lays the foundation for the monitoring, directing and dominating of P2P IPTV. As an active network measurement technology, crawler is a principal method of P2P IPTV measurement. In this paper, a multi-protocol P2P IPTV crawler named TVCrawler was proposed, which can be used to measure and research the live channel of three P2P IPTV systems: PPLive, PPStream and UUSee. The TVCrawler has three characteristics: 1) feedback-based construction mechanism of boot node sets; 2) master-slave framework, and multiple crawler terminals can simultaneously run to gather data; 3) topology increasing coefficient-based control of crawling interval. The experimental results demonstrate that TVCrawler can reach the speed of 20～100 peers per second and 130～500 edges per second.