/// <summary>
/// Allows to start a file download easily
/// </summary>
/// <param name="magnet">Magnet-link to search file</param>
/// <param name="fullSystemPath">optional complete file path to be saved</param>
/// <param name="sources">optional set of sources to use</param>
public DownloadItem DownloadFile(Magnet magnet, string fullSystemPath = null, IEnumerable <Source> sources = null)
{
if (string.IsNullOrEmpty(fullSystemPath))
{
fullSystemPath = Path.Combine(Settings.PathDownload, magnet.FileName);
}
else
{
if (Directory.Exists(fullSystemPath))
{
throw new ArgumentException("Provide full system path to the file, not the directory", fullSystemPath);
}
}
if (!FileHelper.IsValidFilePath(fullSystemPath))
{
throw new InvalidFileNameException("Storage path of the file is invalid")
{
FileName = fullSystemPath
}
}
;
if (!FileHelper.IsValidFileName(Path.GetFileName(fullSystemPath)))
{
throw new InvalidFileNameException("Storage path of the file is invalid")
{
FileName = fullSystemPath
}
}
;
if (!string.IsNullOrEmpty(magnet.FileName))
{
if (!FileHelper.IsValidFileName(magnet.FileName))
{
throw new InvalidFileNameException("Name of the file is invalid")
{
FileName = magnet.FileName
}
}
;
}
var di = new DownloadItem(magnet)
{
SaveTargets = new List <string> {
fullSystemPath
}
};
if (sources != null)
{
di.Sources.AddRange(sources);
}
var result = SearchManager.GetHubResultByTTH(di.Magnet.TTH);
if (result != null)
{
di.Sources.AddRange(result.Sources);
}
if (DownloadManager.AddDownload(di) && Active)
{
if (di.Sources.Count == 0)
{
lock (DownloadManager.SyncRoot)
SearchManager.Search(di);
}
else
{
TransferManager.RequestTransfers(di);
}
}
return(di);
}
/// <summary>
/// Performs engine control operations, need to be called periodically
/// - Checks hub connections (and restores if needed)
/// - Sends connection requests if needed
/// - Sends search requests
/// - Disconnects timeouted connections
/// </summary>
public void Update()
{
foreach (var hub in Hubs)
{
if (Settings.ReconnectTimeout != 0 && hub.IdleSeconds > Settings.ReconnectTimeout)
{
Logger.Info("{0}: Hub inactivity timeout reached [{1}]. Reconnecting", hub.Settings.HubName,
Settings.ReconnectTimeout);
hub.Disconnect();
hub.StartAsync();
}
if (Settings.KeepAliveTimeout != 0 && hub.Active && hub.IdleSeconds > Settings.KeepAliveTimeout)
{
hub.KeepAlive();
}
}
// no need to do anything before we have at least one connection
if (!Active)
{
return;
}
if (!Monitor.TryEnter(_updateSynRoot))
{
Logger.Warn("Unable to update engine, it is locked");
return;
}
try
{
using (new PerfLimit("EngineUpdate requests", 300))
foreach (var downloadItem in DownloadManager.EnumeratesItemsForProcess())
{
if (downloadItem.Priority == DownloadPriority.Pause)
{
continue;
}
if (TransferManager.RequestsAvailable)
{
TransferManager.RequestTransfers(downloadItem);
}
SearchManager.CheckItem(downloadItem);
}
using (new PerfLimit("EngineUpdate Transfers", 300))
TransferManager.Update();
using (new PerfLimit("EngineUpdate Searches", 300))
SearchManager.CheckPendingSearches();
}
catch (Exception x)
{
Logger.Error("Exception when update: {0}", x.Message);
}
finally
{
Monitor.Exit(_updateSynRoot);
}
}
