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How does one learn how to develop BT clients and servers? Or use libBT at a competent level? Every time I’ve looked for a book or in-depth tutorials I get swa

• ikatson 3y ago
  For rqbit at least, there were only a few things necessary to start off with: 1. The bittorrent protocol specification: https://www.bittorrent.org/beps/bep_0003.html https://www.bittorrent.org/beps/bep_0003.html 2. Wireshark dumps of some existing BitTorrent clients to write unit-tests for RPC serialization/deserialization. I used qBittorrent, but you can use any other existing client. 3. (kind of optional) DHT protocol: https://www.bittorrent.org/beps/bep_0005.html https://www.bittorrent.org/beps/bep_0005.html. This actually came later, you can download torrents using just #1. But if you try to do so, you'll discover that most peer information is stored in DHT, and not in trackers. Everything else was heuristics, observing real network behaviour, and tweaking the code accordingly. That said, I'm not exactly the go-to expert on "how to develop BT clients and servers", as rqbit isn't as fully featured as the more mature clients. But given that the above links got me that far, I'm sure they can give a very decent start.
  • mixmastamyk 3y ago
    Thank you.
• joshka 3y ago
  Take a watch of Jon Gjengset's vids on this (there's a codecrafters challenge for building out a bittorent protocol that he's going through). - https://www.youtube.com/watch?v=jf_ddGnum_4 https://www.youtube.com/watch?v=jf_ddGnum_4 - https://www.youtube.com/watch?v=r0srf3kfZbs https://www.youtube.com/watch?v=r0srf3kfZbs