CODEWITHSUNDEEP
pythonbittorrentlibtorrent
AlvaroAV
AlvaroAV

Reputation: 10563

Select which part of file to download

I'm trying to develop my own torrent app using Python. After some research I decided to go with libtorrent, and found this interesting answer:

I've found also another similar question with one answer:

but there I couldn't understand how to do it, I read the full documentation they link in the question and didn't get any idea about how to face this.

I've been looking around libtorrent trying to understand how could I manage the download...

My goal is to start the download the torrent "ordered", meaning I don't want to download random parts of the torrent, the ones availables at the moment, I would like to download it from the beginning to the end.

If anybody has try this and could point me to the right libtorrent documentation would be awesome !!!

But how could I wait for the pieces ? How do I configure libtorrent to wait for the first 10 pieces until begin with the next 10 ?

Upvotes: 3

Views: 1369

Answers (1)

Arvid
Arvid

Reputation: 11245

The simplest way to download pieces in order is to call set_sequential_download() on the torrent_handle for that torrent. That's piece order, starting with piece 0, 1, 2 etc. The order files are downloaded depend on the order they are specified in the .torrent file (i.e. often a seemingly arbitrary order).

Note that this will make libtorrent request pieces in order, they won't necessarily complete in-order. If what you really want is to stream files, i.e. play back as you're downloading, you want to aim for completing pieces in order, which has a subtle difference. For streaming, you want to look at set_piece_deadline(), which will request such pieces using a different piece-picking mechanism.

Upvotes: 6

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