Message processing methods, communication devices, storage media and program products

By introducing a preset cache to store discontinuous sequence numbers at the receiving end, the problem of packet loss caused by out-of-order transmission of IPsec packets is solved, achieving efficient anti-replay processing in high-speed network environments, saving resources and reducing deployment complexity.

CN122093336APending Publication Date: 2026-05-26SHANGHAI HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI HUAWEI TECH CO LTD
Filing Date
2024-11-26
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

During IPsec packet transmission, packet loss due to out-of-order delivery is a problem that existing technologies, such as widened sliding windows or parallel IPsec SA solutions, cannot effectively solve, especially in high-speed network environments. They also consume a lot of resources and are complex to deploy.

Method used

A preset buffer is introduced at the receiving end to store sequence numbers that are not consecutive with the sequence numbers in the sliding window. By comparing the sequence number of the IPsec packet to be processed with the results of the sliding window and the preset buffer, replay protection is performed to avoid accidental dropping caused by the sudden movement of the sliding window.

Benefits of technology

It effectively avoids the accidental discarding of low-priority IPsec packets, saves system resources, reduces deployment costs, requires no negotiation with the peer, and has good compatibility.

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Abstract

This application discloses a message processing method, communication device, storage medium, and program product, relating to the field of communications. The method includes: the communication device acquiring the sequence number of an IPsec packet to be processed; and then performing anti-replay processing on the IPsec packet based on a comparison between the sequence number of the IPsec packet to be processed and the sequence numbers recorded in a preset cache and within a sliding window. The preset cache is used to record sequence numbers that are not consecutive with the sequence numbers within the sliding window. This method allows the communication device to store the sequence numbers of out-of-order packets in the preset cache during anti-replay processing, avoiding sudden large-scale window expansion and thus preventing the accidental discarding of IPsec packets.
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