This blog post from a few years ago suggests that using BitTorrent services over Tor is a bad idea for multiple reasons. However, it also suggests some fixes to get over these problems.
Is using a
It doesn’t make you anonymous. Torrent protocol wasn’t designed with anonymity in mind and there are a million ways you’re going to leak your actual IP address.
Tor is a TCP only network.
While this doesn’t give you the anonymity you wanted, it will hurt the network for other users.
I’m definitely not an expert on Bittorrent, but I believe the person above was incorrect - I think there are some extensions to the protocol that enable UDP transport, but typically Bittorrent traffic occurs primarily via TCP.
What you said makes perfect sense in that hypothetical context, though!
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and sometimes we do care about successful delivery but need to handle that ourselves so we use UDP to avoid layering delivery verification mechanisms.
https://openvpn.net/faq/what-is-tcp-meltdown
Am I right to assume this is generally carried out by the users’ torrent client which is why we prefer UDP for torrenting?
Torrents are literally built around file hashes so yes
I’m definitely not an expert on Bittorrent, but I believe the person above was incorrect - I think there are some extensions to the protocol that enable UDP transport, but typically Bittorrent traffic occurs primarily via TCP.
What you said makes perfect sense in that hypothetical context, though!