Spoon-P2P Content-Based File Sharing in Disconnected Manets

Present peer-to-peer (P2P) file distribution methods in mobile ad hoc networks (MANETs) can be divided into three categories: local broadcasting based advertisement (push) and discovery (pull)-based and contact-based. The first two techniques can simply be time consuming and low ability to accommodate when the demand grows higher. They are mainly developed for linked MANETs, in which end-to-end relativity among nodes is preserved. The contact-based methods adjust to the adaptable nature of disconnected MANETs but fail to regard the social contents of portable nodes, which can be subjugated to advance the file searching effectiveness. In this paper, we suggest a P2P content-based file distribution system, namely SPOON, for disconnected MANETs. The system uses an interest mining algorithm to derive a node’s concern from its files for content-based file searching. For competent file searching, SPOON assembles similar-interest nodes that frequently gather with each other as a set. It takes the benefit of node portability by designating constant nodes, which has the most common contact with neighborhood members, as community coordinator for hunt within the community and highly-mobile nodes that visit other communities frequently as community ambassador for search in other communities. An interest-oriented file searching scheme is projected for high file searching efficiency. Supplementary strategies for file transfer, request-completion and avoiding occurrence of loops and node churn consideration are measured to further enhance the file searching competence. We developed a virtual environment using JAVAFX and MYSQL to test our system. The test outcome show that our system considerably lowers communication cost and improves file searching success rate compared to present methods.