Re: [libtorrent] Libtorrent 0.15.8 select file to DL

[<ar...@cs...>]

Quoting Александр Новосёлов <no...@to...>:

> Hello everyone!
> 
>   I use rasterbar libtorrent to download torrent as stream and play on
> STB. It's wonderful BT library, thank you so much! Now I try make
> downloading one file from torrent. I have torrent with two files:
>   1. Goon/kinopoisk.ru-Goon-74991.mp4 - 38'201'816 bytes
>   2. Goon/kinopoisk.ru-Goon-81563.mp4 - 17'434'052 bytes
> 
>   To test selective downloading I have modify sample simple-client.cpp:
> ---
> int main (int argc, char* argv[])
> {
>         using namespace libtorrent;
> #if BOOST_VERSION < 103400
>         namespace fs = boost::filesystem;
>         fs::path::default_name_check(fs::no_check);
> #endif
> 
>         if (argc != 2)
>         {
>                 std::cerr << "usage: ./simple_client torrent-file\n"
>                         "to stop the client, press return.\n";
>                 return 1;
>         }
> 
>         session_settings settings;
>         // optimizing for stream video
>         settings.disk_cache_algorithm = session_settings::lru;
> 
>         session s;
>         s.set_settings(settings);
>         s.listen_on(std::make_pair(6881, 6889));
> 
>         add_torrent_params p;
>         // STB creates files very slow on FAT32
>         p.storage_mode = storage_mode_compact;

Unfortunately you can't combine compact storage with deselecting files.
Set the storage_mode to storage_mode_sparse instead and it should work.

>         p.save_path = "./";
> 
>         error_code ec;
>         p.ti = new torrent_info(argv[1], ec);
> 
>         if (ec)
>         {
>                 std::cout << ec.message() << std::endl;
>                 return 1;
>         }
> 
>         torrent_handle handle = s.add_torrent(p, ec);
>         // get BT as a stream
>         handle.set_sequential_download(true);
> 
>         // ignore this file
>         handle.file_priority(0, 0);
>         // file we want
>         handle.file_priority(1, 7);
> 
>         if (ec)
>         {
>                 std::cerr << ec.message() << std::endl;
>                 return 1;
>         }
> 
>         // wait for the user to end
>         char a;
>         std::cin.unsetf(std::ios_base::skipws);
>         std::cin >> a;
>         return 0;
> }
> ---
> 
>   After downloading I have only one file:
>   1. Goon/kinopoisk.ru-Goon-74991.mp4 - 17'498'112 bytes
> 
>   And VLC can't playback it.
> 
>   What I do wrong?
>   How I built libtorrent:
>   1. configure --disable-geoip --disable-encryption
>   2. make && sudo make install
> 
>   Thank you.

-- 
Arvid Norberg