We can no longer save valid torrent files in the general case, because
for torrents of version 2, we need a full merkle tree to do it, but if
a torrent is added from magnet link, full merkle tree may not be available
even before the end of downloading all the data. Actually, we don't need
the full torrent file for the purposes of resuming the torrent, so we can
allow libtorrent to produce only a minimal part of the metadata as part
complete resume data, but we still want to store it in a separate file,
so we extract the resulting metadata from the complete resume data before
saving and merge it together before loading.
This also suppress the compiler warning:
src/base/bittorrent/torrentimpl.cpp:228:36: warning: comparison of integer expressions of different signedness: ‘int’ and ‘const size_t’ {aka ‘const long unsigned int’} [-Wsign-compare]
Both `lt::create_torrent` constructor and `lt::create_torrent::generate()`
can throw an exception so we need to handle it to prevent the app from crashing.
- warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
Caused by mismatch between size_type of std and Qt containers. It is safe to cast to int as all of those containers hold low number of objects.
This is to suppress the following compilation warnings:
base/bittorrent/magneturi.cpp: In constructor ‘BitTorrent::MagnetUri::MagnetUri(const QString&)’:
base/bittorrent/magneturi.cpp:87:60: warning: missing initializer for member ‘BitTorrent::TrackerEntry::message’ [-Wmissing-field-initializers]
87 | m_trackers.append({QString::fromStdString(tracker)});
If torrent failed to write, it stops downloading and goes to
"upload mode" instead of errored state so it just keeps seeding.
Now qBittorrent indicates this state as "errored" and allows
the user to manually bring the torrent out of this state.
Now the comparison function/class should be constructed before usage.
This change also make it easier to plug in into various containers which
will require a compare function type (such as std::set).
Chocobo1