Welcome to the Bittorrent Implementation project! This project aims to guide you through the process of building a simplified Bittorrent client in stages, covering essential functionalities step by step.

Ensure you have go (1.19) installed locally Run ./bittorrent.sh to run your program, which is implemented in cmd/bittorrent/main.go.

Bencode is a serialization format used in the BitTorrent protocol. This phase focuses on decoding strings. Here's how to run the program:

$ ./bittorrent.sh decode 5:hello

Extend the decode command to support bencoded integers:

$ ./bittorrent.sh decode i52e

Extend the decode command to support bencoded lists:

$ ./bittorrent.sh decode l5:helloi52ee

Extend the decode command to support bencoded dictionaries:

$ ./bittorrent.sh decode d3:foo3:bar5:helloi52ee

Parse a torrent file and print information about the torrent:

$ ./bittorrent.sh info sample.torrent

Calculate the info hash for a torrent file:

$ ./bittorrent.sh info sample.torrent

Print piece length and piece hashes in hexadecimal format:

$ ./bittorrent.sh info sample.torrent

Make a GET request to a HTTP tracker to discover peers:

$ ./bittorrent.sh peers sample.torrent

Establish a TCP connection with a peer and complete a handshake:

$ ./bittorrent.sh handshake sample.torrent <peer_ip>:<peer_port>

Download one piece and save it to disk:

$ ./bittorrent.sh download_piece -o /tmp/test-piece-0 sample.torrent 0

Download the entire file and save it to disk:

$ ./bittorrent.sh download -o tmp/test.txt sample.torrent

Feel free to explore each phase of the project and expand your understanding of the Bittorrent protocol implementation!