Method for sharing and downloading files in P2P protocol

Abstract

The invention discloses a method for sharing and downloading files in the P2P protocol. The method includes the steps of issuing the files, generating a URL, informing a Tracker of the URL, and directly positioning and downloading the files to be downloaded through the URL by means of a Peer; when the Peer requests for obtaining file segmenting information or other Peers are reminded to obtain a certain piece or certain pieces of segmenting information, reducing the information length by modifying information parameters, and automatically calculating starting positions and lengths of segments in the files according to the segmenting rule through an information receiver Peer, wherein only index information of the segments need to be contained in the information; after a Peer providing sharing and downloading receives the Peer information of requesting for obtaining the segments, calculating the starting positions of the requested or informed segments in the files according to the segment index information contained in the information, obtaining ending positions of the segments, and transmitting requested segment data to a requester Peer according to the calculated position information. By means of the method, information transmission communication traffic can be reduced, and communication efficiency can be improved.

Description

technical field [0001] The present invention relates to a file sharing and transmission method that does not rely on file block length information and torrent seed information files when P2P file sharing and downloading, and realizes the purpose of reducing information transmission traffic and improving communication efficiency during P2P file sharing, downloading and transmission, and belongs to the Internet communication technology field. Background technique [0002] The file sharing download based on the P2P protocol is used to replace the file download in the traditional centralized C / S mode. Its main purpose is to save the overall bandwidth in the network system or improve the utilization efficiency of the network bandwidth. The contact obtains data, on the one hand, it utilizes the remaining uplink bandwidth of the shared service contact, and at the same time avoids the overload of Tracker (or central server), thereby improving the overall effectiveness of the network...

AI Technical Summary

Problems solved by technology

However, according to Moore's Law, the computer's computing speed increases rapidly, but the increase in Internet transmission speed is difficult to catch up with the increase in transmission speed requirements; Strong, the cost savings brought by parallel processing is not obvious, therefore, improving the transmission efficiency is the key to improving the efficiency of P2P sharing, and the current method can not meet the above requirements well

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