Data packet reassembly method and device, computer equipment and readable medium

A data packet and purpose technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve the problems of poor practicability, inability to process data packets, single data processing, etc., achieve strong practicability, and solve TCP data packet chaos Effects that are flexible in sequence and usage

Active Publication Date: 2021-08-17
BEIJING BAIDU NETCOM SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the data processed by the above-mentioned existing network data packet restoration method is single, and can only analyze and reorganize POST data, and cannot handle request methods such as GET / HEAD, and cannot process data packets without content-length fields such as transfer-encoding
Therefore, the existing HTTP stream reassembly technology is very rigid, can only handle relatively single data, and has poor practicability

Method used

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  • Data packet reassembly method and device, computer equipment and readable medium
  • Data packet reassembly method and device, computer equipment and readable medium
  • Data packet reassembly method and device, computer equipment and readable medium

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Embodiment Construction

[0074] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0075] figure 1 It is a flow chart of Embodiment 1 of the data packet reassembly method of the present invention. Such as figure 1 As shown, the reassembly method of the data packet in this embodiment may specifically include the following steps:

[0076] 100. Obtain all TCP data packets within a preset time period from the routing nodes of the network;

[0077] The execution subject of the recombination method of the data packet in this embodiment is the recombination device of the data packet, and the recombination device of the data packet can recombine all TCP data packets in the network according to the TCP flow, and recombine according to the HTTP flow in each TCP flow . In practical applications, one TCP stream may include multiple HTTP...

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Abstract

The invention provides a data package recombination method and device, computer equipment and a readable medium. The method comprises: obtaining all TCP data packets within a preset time period from routing nodes of the network; obtaining a plurality of TCP data packets in each TCP flow according to quadruple information of each TCP data packet; the quadruple information Including source port identification, destination port identification, source IP address and destination IP address; according to the four-tuple information of each TCP data packet in each TCP flow and the attribute information of each TCP data packet, a plurality of TCP in each TCP flow The data packets are reassembled according to the sending order; the reassembled multiple TCP data packets of each TCP flow are reassembled according to the HTTP flow. The technical scheme of the present invention can reassemble data packets in any form of TCP flow, has a very flexible usage mode, can be applied to many scenarios, and has strong practicability.

Description

【Technical field】 [0001] The invention relates to the field of computer application technology, in particular to a method and device for recombining data packets, computer equipment and readable media. 【Background technique】 [0002] HyperText Transfer Protocol (HTTP) is an application layer protocol based on Transmission Control Protocol (Transmission Control Protocol; TCP) TCP / Internet Protocol (Internet protocol; IP), and has been widely used in the Internet field. [0003] In the era of widespread Internet and information explosion, information security has become an important issue. By analyzing the data flow, reorganizing the HTTP protocol data packets, and restoring the data packets transmitted in the network into complete application layer data, it can help people realize security behavior analysis. For example, the existing HTTP stream reassembly technology is mainly used in the field of security audits, including mining malicious and illegal user behaviors (pornog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/951H04L12/953H04L29/06H04L29/08H04L47/43
CPCH04L49/9057H04L67/02H04L69/163
Inventor 蓝秉宸王少岩
Owner BEIJING BAIDU NETCOM SCI & TECH CO LTD
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