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Preserve initial torrent progress while checking resume data

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PR #21784.
This commit is contained in:
Vladimir Golovnev 2024-11-10 12:01:12 +03:00 committed by GitHub
parent 3ec645674a
commit 69f19d4a0b
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GPG key ID: B5690EEEBB952194
1 changed files with 38 additions and 21 deletions
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59
src/base/bittorrent/torrentimpl.cpp
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@ -1647,9 +1647,19 @@ void TorrentImpl::forceRecheck()
return;
m_nativeHandle.force_recheck();
// We have to force update the cached state, otherwise someone will be able to get
// an incorrect one during the interval until the cached state is updated in a regular way.
m_nativeStatus.state = lt::torrent_status::checking_resume_data;
m_nativeStatus.pieces.clear_all();
m_nativeStatus.num_pieces = 0;
m_ltAddTorrentParams.have_pieces.clear();
m_ltAddTorrentParams.verified_pieces.clear();
m_ltAddTorrentParams.unfinished_pieces.clear();
m_completedFiles.fill(false);
m_filesProgress.fill(0);
m_pieces.fill(false);
m_unchecked = false;
if (m_hasMissingFiles)
{
@ -1662,14 +1672,6 @@ void TorrentImpl::forceRecheck()
}
}
m_unchecked = false;
m_completedFiles.fill(false);
m_filesProgress.fill(0);
m_pieces.fill(false);
m_nativeStatus.pieces.clear_all();
m_nativeStatus.num_pieces = 0;
if (isStopped())
{
// When "force recheck" is applied on Stopped torrent, we start them to perform checking
@ -2163,6 +2165,7 @@ void TorrentImpl::handleSaveResumeDataAlert(const lt::save_resume_data_alert *p)
m_ltAddTorrentParams.have_pieces.clear();
m_ltAddTorrentParams.verified_pieces.clear();
m_ltAddTorrentParams.unfinished_pieces.clear();
m_nativeStatus.torrent_file = m_ltAddTorrentParams.ti;
@ -2205,23 +2208,37 @@ void TorrentImpl::handleSaveResumeDataAlert(const lt::save_resume_data_alert *p)
void TorrentImpl::prepareResumeData(const lt::add_torrent_params &params)
{
if (m_hasMissingFiles)
{
const auto havePieces = m_ltAddTorrentParams.have_pieces;
const auto unfinishedPieces = m_ltAddTorrentParams.unfinished_pieces;
const auto verifiedPieces = m_ltAddTorrentParams.verified_pieces;
decltype(params.have_pieces) havePieces;
decltype(params.unfinished_pieces) unfinishedPieces;
decltype(params.verified_pieces) verifiedPieces;
// The resume data obtained from libtorrent contains an empty "progress" in the following cases:
// 1. when it was requested at a time when the initial resume data has not yet been checked,
// 2. when initial resume data was rejected
// We should preserve the initial "progress" in such cases.
const bool needPreserveProgress = m_hasMissingFiles
|| (!m_ltAddTorrentParams.have_pieces.empty() && params.have_pieces.empty());
const bool preserveSeedMode = !m_hasMissingFiles && !hasMetadata()
&& (m_ltAddTorrentParams.flags & lt::torrent_flags::seed_mode);
if (needPreserveProgress)
{
havePieces = std::move(m_ltAddTorrentParams.have_pieces);
unfinishedPieces = std::move(m_ltAddTorrentParams.unfinished_pieces);
verifiedPieces = std::move(m_ltAddTorrentParams.verified_pieces);
}
// Update recent resume data but preserve existing progress
m_ltAddTorrentParams = params;
m_ltAddTorrentParams.have_pieces = havePieces;
m_ltAddTorrentParams.unfinished_pieces = unfinishedPieces;
m_ltAddTorrentParams.verified_pieces = verifiedPieces;
}
else
{
const bool preserveSeedMode = (!hasMetadata() && (m_ltAddTorrentParams.flags & lt::torrent_flags::seed_mode));
// Update recent resume data
m_ltAddTorrentParams = params;
if (needPreserveProgress)
{
m_ltAddTorrentParams.have_pieces = std::move(havePieces);
m_ltAddTorrentParams.unfinished_pieces = std::move(unfinishedPieces);
m_ltAddTorrentParams.verified_pieces = std::move(verifiedPieces);
}
if (preserveSeedMode)
m_ltAddTorrentParams.flags |= lt::torrent_flags::seed_mode;
}