TCP proxy with data redundancy elimination and compressing technology

摘要

TCP protocol is a connection-oriented transmission protocol with mechanisims such as sliding window, data acknowledgement, slow start and congestion avoidance to ensure reliability. But these machanisims bring low efficiency because of delay and loss. Thus, we need to design an improved TCP protocol to achieve the purpose of WAN acceleration. This paper mainly introduces two kinds of WAN accelebration technology of TCP flow optimization and data cache technology. TCP flow optimization uses TCP transparent proxy technology based on an improved TCP protocol to solve the problem of large delay and high packet loss rate. The improved TCP protocol includes slow start improved, large receive buff, the improvement algorithm of congestion avoidance, etc. Besides, data redundancy elimination and compression technology are also used in TCP data interation to reduce link load and improve transmission efficiency.