The Design And Implementation Of Deep HTTP Packet Parsing & Extraction Engine

With the rapid development of communication techniques, the network needs to provide high usability, load-balancing and intelligibility functions such as content-based billing, layer-7 switching and Internet security services. The recent researches focus on payload inspection for applications. Most of these applications need to search for predefined signatures in the packet payload. Hence an important building block of these processors is string matching infrastructure. Since conventional software-based algorithms for string matching have not kept pace with high network speeds, specialized high-speed, hardware-based solutions are needed.The thesis firstly evaluates and analyzes the background of the high-level switching, the importance of deep packet parsing and extraction technique, the software design and implementation of content-based switching. Then it brings out the essentiality of hardware-based solution. We bring forward a solution scheme for deep HTTP packets parsing and extraction, and provide the design and implementation of URL Parsing & Extraction module and the pattern match module.Finally, the thesis brings forward a building scheme of atpg-based ASIC verification environment, provides the test scheme of this HTTP deep P&E engine. The design and implementation scheme is provided with advisable reference significance.