Torrent trackers are responsible to introduce Peers to each other who are downloading/uploading the same files[torrent].
Its basically the backbone of torrent.
say for example, you have a torrent file or a magnet link. And you start downloading the file using client application, it will go to known trackers and ask them the address of peers who are uploading the file based on unique hash of it. Torrent breaks files in the chunks with size of few MB referred as pieces, Tracker will get the current status of downloaded and remaining chunks from you and give you the list of peers with same file available, at same time it will register your address for the other new peers to connect.
now connecting peers have knowledge of one anther's address they will share pieces to others and download remaining from other peers to complete the download.
so, basically peer is backbone of system, its a tool which can have multiple use legal or not, one cannot simply call its source code violating the IPs, that's just an absurd argument.
say for example, you have a torrent file or a magnet link. And you start downloading the file using client application, it will go to known trackers and ask them the address of peers who are uploading the file based on unique hash of it. Torrent breaks files in the chunks with size of few MB referred as pieces, Tracker will get the current status of downloaded and remaining chunks from you and give you the list of peers with same file available, at same time it will register your address for the other new peers to connect. now connecting peers have knowledge of one anther's address they will share pieces to others and download remaining from other peers to complete the download.
so, basically peer is backbone of system, its a tool which can have multiple use legal or not, one cannot simply call its source code violating the IPs, that's just an absurd argument.