What is Swarm Merging?

PirateForDaLolz@lemmy.dbzer0.com to Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ@lemmy.dbzer0.com – 53 points –

Every now and then, when I'm connected to a torrent a peer will connect that has a reference to "Swarm Merging" in their name. What is swarm merging?

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That's awesome! I suppose it might also explain why this torrent has been sitting in my queue for several weeks and is now suddenly at 100% from this one seeder. Do you know if the process is automated? Or does the user have to do the work of finding the torrents with matching files themselves? It's a bummer that qBittorrent apparently doesn't support it.

At least in BiglyBT, the process is automated. The match is based on exact file size; it's a crappy technique* (as the odds of a false match are rather high) and the usage case is fairly small (two identical files across different torrents), so not too commonly used.

*odds are that Vuze implemented it this way because requesting a hash would break the BitTorrent protocol, and prevent interoperability of multiple clients.

Well, I might have to try it for the torrent that I'm trying to download. Merging may not be effective for most cases, but in this case, this peer was the only one that managed to get a full copy of the torrent content. They disconnected before I could grab all of it though, so now I'm stuck at 50%. :(