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fix: qbt reuse existing torrent #121

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fix: qbt reuse existing torrent #121

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ff3d638
Adopt an existing qBittorrent torrent instead of failing the grab
benjitobz Sep 1, 2026
3c35000
Merge remote-tracking branch 'upstream/develop' into sync/fix/qbt-reu…
benjitobz Sep 10, 2026
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26 changes: 26 additions & 0 deletions src/NzbDrone.Core/Download/Clients/QBittorrent/QBittorrent.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -91,6 +91,24 @@ public bool ShouldPreserveItemAfterImport(DownloadClientItem downloadClientItem)
Settings.EbookImportedCategory);
}

private bool TorrentExistsInClient(string hash)
{
if (hash.IsNullOrWhiteSpace())
{
return false;
}

try
{
return Proxy.GetTorrents(Settings).Any(t => hash.Equals(t.Hash, StringComparison.OrdinalIgnoreCase));
}
catch (Exception ex)
{
_logger.Debug(ex, "Unable to check whether torrent {0} already exists in qBittorrent", hash);
return false;
}
}

protected override string AddFromMagnetLink(RemoteBook remoteBook, string hash, string magnetLink)
{
if (!Proxy.GetConfig(Settings).DhtEnabled && !magnetLink.Contains("&tr="))
Expand All @@ -113,6 +131,10 @@ protected override string AddFromMagnetLink(RemoteBook remoteBook, string hash,
{
throw new DownloadClientRejectedReleaseException(remoteBook.Release, "qBittorrent rejected the magnet link due to a conflict", ex);
}
catch (DownloadClientException) when (TorrentExistsInClient(hash))
{
_logger.Info("qBittorrent already has torrent {0}; adopting the existing download instead of failing the grab", hash);
}

if ((!addHasSetShareLimits && setShareLimits) || moveToTop || forceStart)
{
Expand Down Expand Up @@ -178,6 +200,10 @@ protected override string AddFromTorrentFile(RemoteBook remoteBook, string hash,
{
throw new DownloadClientRejectedReleaseException(remoteBook.Release, "qBittorrent rejected the torrent file due to a conflict", ex);
}
catch (DownloadClientException) when (TorrentExistsInClient(hash))
{
_logger.Info("qBittorrent already has torrent {0}; adopting the existing download instead of failing the grab", hash);
}

if ((!addHasSetShareLimits && setShareLimits) || moveToTop || forceStart)
{
Expand Down