BitTorrent

BitTorrent protocol is a communication protocol for peer-to-peer networking.It is basic philosophy is that it should be faster to copy

files from one client computer to another rather than etrieving data files from some from of  cloud storage(云储存)。

SWARM of host to upload or download files from each other simultaneously 

The descriptor filr contains meta data about the file to be made available.

"seeder" by making the torrent descriptor file available to other users.

The descriptor file is given to other BitTorrent node which act as peer or “leeches”