Super-node selection and resource search method for peer network with node priority

Abstract

The invention relates to a super node selection and resource search method in a peer-to-peer network that introduces node importance, and belongs to the technical field of peer-to-peer networks. It identifies efficient nodes that maintain communication and guarantee service performance by calculating node importance. The steps are as follows: 1) Calculate the importance of each node in the network; 2) Determine the super node according to the importance; 3) Perform the resource search process. The distributed iterative node importance calculation method used in the present invention is a localized algorithm, which has the characteristics of flexibility, high efficiency, no single point of failure, and can quickly adapt to network topology changes in peer-to-peer networks, and its effect is obviously better than traditional The method of selecting network super nodes according to the number of node neighbors.

Description

technical field [0001] The invention provides a super node selection and resource search method in a peer-to-peer network, which belongs to the technical fields of computer network and peer-to-peer network. Background technique [0002] Among the current peer-to-peer network applications, Gnutella is the most mature and most supported peer-to-peer network protocol without central nodes. Gnutella is an open protocol. Anyone can develop Gnutella-compatible software. Developers compete with each other and improve, creating a peer-to-peer network for file sharing that is constantly improving, changing and perfecting. Anyone only needs to put the files he wants to share in a directory on the hard disk, and then use the Gnutella network to share resources with all users of the peer-to-peer network. Gnutella has no center. Gnutella allows users to directly contact other Gnutella nodes and share any kind of files. Most file sharing systems focus on media files. At present, Gnutell...

AI Technical Summary

Problems solved by technology

Supernodes carry a relatively large load, so the load on the network is very uneven. In order to improve the robustness of the peer-to-peer network of supernodes, the Gnutella0.6 protocol stipulates that each leaf node can belong to d different supernodes at the same time. The leaf node must transmit its own file index to the super node, which will increase the network traffic and occupy the effective bandwidth of the super node, so that the number of super nodes will increase, and the maximum value of d shall not exceed 3

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