DHT Protocol-based Search Engine

Peer network P2P(peer to peer) technology is widely used in the Internet, such as DHT protocol-based BT download software (of which there are eMule, BitComet, Nora and so on), based on P2P video-on-demand systems (pps and uusee, etc.). P2P can be simply defined as the direct exchange of information between by peers to achieve the sharing of computer resources and services of the two roles, with the technology to build a network is called a peer. With a central server for central network systems, both for each client, such as a node in the network, there are server functionality, a node can not find any other node directly and must rely on their user base for information exchange, where each node to some maintain their own routing table when the other node sends a request, the node from the routing table with a series of algorithms to find the best match through node information.Because many resources are released in the form of forums, and forum and set permissions problem, so that ordinary users can not access resources, this article is based on DHT protocol explore vertical search engines, in order to solve this problem. DHT protocol simulation program based on the agreement of the four most important request, hash value index DHT network node requests and hash information saved, and then download via BT protocol The seeds parsed into a text message and save it to the database, indexing, search engine DHT formation, in which the Chinese word choice and full-text search engine will be described in detail in the text. In order to enrich the diversity of search engine results, but also will eDonkey, Nora, Baidu video resources are added to the database, which eDonkey aMule open source resources to crawl through, while Nora and Baidu video resources can be directed reptiles program can grab some sites.