Torrent Client

This repository contains a Python-based torrent client that allows you to decode torrent files, retrieve information, find peers, perform handshakes with peers, download specific pieces, and download entire torrent files.

Features

• Decode Bencode: Decode bencoded data.
• Retrieve Torrent Info: Get tracker URL, file length, info hash, piece length, and piece hashes from a torrent file.
• Get Peers: Retrieve a list of peers from the tracker.
• Establish Handshake: Perform a handshake with a peer.
• Download Piece: Download a specific piece of a torrent file.
• Download Torrent: Download the entire torrent file from peers.

Requirements

• Python 3.x
• Required packages: requests, bencodepy

Install the required packages using pip:

pip install requests bencodepy

Usage

The torrent client supports several commands. Below are examples of how to use each command.

1. Decode Bencode Decode a bencoded value and print it as JSON.

python torrent_client.py decode <bencoded_value>

2. Retrieve Torrent Info Retrieve and display information from a .torrent file.

python torrent_client.py info <path_to_torrent_file>

3. Get Peers Retrieve and display a list of peers from the tracker.

python torrent_client.py peers <path_to_torrent_file>

4. Establish Handshake Perform a handshake with a peer and display the peer ID.

python torrent_client.py handshake <path_to_torrent_file> <peer_ip:peer_port>

5. Download Piece Download a specific piece of a torrent file and save it to an output file.

python torrent_client.py download_piece <path_to_torrent_file> <output_file> <piece_index>

6. Download Torrent Download the entire torrent file and save it to an output file.

python torrent_client.py download <path_to_torrent_file> <output_file>

Example

Here's an example of downloading a specific piece of a torrent file:

python torrent_client.py download_piece example.torrent piece_0.tmp 0

And an example of downloading the entire torrent file:

python torrent_client.py download example.torrent output_file

Notes

Make sure to customize the <path_to_torrent_file>, <peer_ip:peer_port>, <output_file>, <piece_index>, etc., with appropriate values when using the commands.