一种TCP连接的延迟多次迁移技术

doi:10.3778/j.issn.1002-8331.2008.21.019

计算机工程与应用 ›› 2008, Vol. 44 ›› Issue (21): 72-74.DOI: 10.3778/j.issn.1002-8331.2008.21.019

一种TCP连接的延迟多次迁移技术

汤迪斌^1,2,倪宏²,陈晓²

1.中国科学院研究生院，北京 100039
2.中国科学院声学研究所国家网络新媒体工程技术研究中心，北京 100080

收稿日期:2008-01-31 修回日期:2008-03-26 出版日期:2008-07-21 发布日期:2008-07-21
通讯作者: 汤迪斌

Delayed multiple TCP connection handoff mechanism

TANG Di-bin^1,2,NI Hong²,CHEN Xiao²

1.Graduate School of Chinese Academy of Sciences，Beijing 100039，China
2.National Network and New Media Technology Research Center，Institute of Acoustics，CAS，Beijing 100080，China

Received:2008-01-31 Revised:2008-03-26 Online:2008-07-21 Published:2008-07-21
Contact: TANG Di-bin

摘要/Abstract

摘要： 现有的基于内容的Web交换技术不能很好地支持HTTP持久连接（P-HTTP）和流水线请求。提出了一种TCP连接的延迟多次迁移方法（DM-TCPHA），前端FE根据第一个请求将连接迁移到选中的BE，该连接上的后续请求报文由BE来调度，且通过强制手段保证BE在收到客户对HTTP回复的确认报文后再执行迁移。该方法具有TCP迁移高性能的优点，且能很好地支持P-HTTP和流水线请求。

关键词: TCP迁移, 持久连接, 流水线请求, Web集群

Abstract: The state of the art content-aware web switching mechanisms have limit support to persistent HTTP connection and pipelined requests.This paper proposes delayed multiple TCP connection handoff，front-end handoffs TCP connection to a selected back-end according to the first request，successive requests on the same persistent connection are dispatched by back-ends.A constraint is adopted to ensure that the connection is handoffed after receiving acknowledgement to the last packet of HTTP response.This method has the advantage of TCP handoff’s high performance，and supports P-HTTP and pipelined requests.

Key words: TCP handoff, persistent connection, pipelined requests, Web cluster

汤迪斌^1,2,倪宏²,陈晓². 一种TCP连接的延迟多次迁移技术[J]. 计算机工程与应用, 2008, 44(21): 72-74.

TANG Di-bin^1,2,NI Hong²,CHEN Xiao². Delayed multiple TCP connection handoff mechanism[J]. Computer Engineering and Applications, 2008, 44(21): 72-74.

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[3]	张曦煌，韩仲海. Web集群中基于接纳控制的QoS-aware请求调度算法[J]. 计算机工程与应用, 2007, 43(16): 162-164.

一种TCP连接的延迟多次迁移技术

Delayed multiple TCP connection handoff mechanism

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