摘要

In order to tackle the problems that selfish (malicious) nodes occupy the center of the P2P network resulting in inefficient network performance, a local historical transaction based reciprocal contribution capacity (RCC) of peers and an effective topology optimization approach (RCTO) is proposed. It is desirable for RCTO to establish connections between peers with higher RCC. Otherwise, selfish nodes would be recognized and forced to the marginal of P2P network. It is shown by experiment that RCTO can greatly shorten the search hops for authentic resource. Compared with counterpart reciprocal capacity based adaptive topology protocol, RCTO achieves higher resource distribution efficiency and incurs less cost.

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