qBittorrent official forums

Is there any way whenever a new torrent has been added for downloading Qbittorrent to check automatically if the files within haven't been already downloaded in another torrent file?

As long as there is checksum verification that would enable to download simultaneously the files from multiple places at the same time. Especially helpful when the files are not well seeded.

I just want to hear what your thoughts on such a feature.

Typically, a torrent client can't tell whether two files are the same until both have been downloaded.

bob2306 wrote:
> Typically, a torrent client can't tell whether two files are the same until
> both have been downloaded.


That's what I mean. How is the torrent protocol working? Isn't it first announcing the checksum? If not Probably utilizing such a feature in Qt would be quite the novelty.

A hash identifies the whole torrent and a hash is used to check the integrity of each individual part. It's only possible to identify a file if it exactly aligns with part boundaries or is padded with dummy files, as it is in BitComet torrent files.

Sooo is it possible?

AOK wrote: Tue Sep 10, 2024 6:04 pm Sooo is it possible?

If the file path and names are 100% match, it will start re-checking the contents and start seeding.
- Mind you, the path must match. If you have a temporary download folder, they will not; you will have to change path each time you add this other torrent.
- Cross-seeding is against most closed site rules, so be careful.

I don't mind cross seeding within private trackers, however can't one have hash check instead of whole file path match?

Cross leeching/seeding within a list of public torrent sites won't be a bad idea.... right?