Design And Implementation Of HTTP Protocol Restore System

As the popularity of Internet technology, the network has become indispensable in our daily life. Network media is a double-edged sword, through Web content management can effectively reduce the negative impact of the net. Implementations of Web content management are based on network packet protocol restore, including packet capture, protocol analysis, application-layer data restore. This article's goal is to design and implement a network packet protocol restore system, which dedicated to restore the used most HTTP protocol.Currently, many network packet protocol restore related products have appeared, but because of the rapid growth of network bandwidth, increasingly rich of network information, there are new requirements in performance and functionality of the network packet protocol restore system. This article studies on the network packet protocol restore principles and key technology, designs and implements a HTTP protocol restore system. The design of the system is strictly according to the hierarchical relationships of the network protocol stack, and has a good data structure design, so it is very convenient for maintenance and extensions. The system uses regular expressions to extract HTTP message headers, improves the performance of the HTTP protocol restore. The system designs a set of shared memory management mechanism, which can provide easily data sharing between processes. The system achieves a similar Web page filter base on URL addresses to reduce the amount of network data restore processing. The system also adds black/white list feature for different management needs to provide a more personalized data. After testing, the HTTP protocol restore system's restore ability could reach 600Mbps, and the similar Web page filter could reduce about 30% to 40% amount of the restore data, the black/white list could reach the match speed need.This article adds the similar Web page filter base on URL addresses and black/white list feature to the HTTP protocol restore system, also designs amount of methods to improve the restore ability of the system, provides some new ideas for the HTTP protocol restore.