private void DownloadingThread(CancellationToken token)
{
for (; ;)
{
if (token.WaitHandle.WaitOne(1000 * 10))
{
return;
}
var items = new List <DownloadItemInfo>();
lock (_lockObject)
{
items.AddRange(CollectionUtils.Unite(_volatileDownloadItemInfoManager, _downloadItemInfoManager).ToArray()
.Where(n => n.State == DownloadState.Downloading));
}
foreach (var item in items)
{
try
{
if (!this.CheckSize(item))
{
throw new ArgumentException("download size too large.");
}
if (item.Depth == 0)
{
if (!_cacheManager.Contains(item.Clue.Hash))
{
item.State = DownloadState.Downloading;
_networkManager.Download(item.Clue.Hash);
}
else
{
item.State = DownloadState.Decoding;
}
}
else
{
if (!item.Index.Groups.All(n => _existManager.GetCount(n, true) >= n.Hashes.Count() / 2))
{
item.State = DownloadState.Downloading;
foreach (var group in item.Index.Groups.Randomize())
{
if (_existManager.GetCount(group, true) >= group.Hashes.Count() / 2)
{
continue;
}
foreach (var hash in _existManager.GetHashes(group, false))
{
_networkManager.Download(hash);
}
}
}
else
{
item.State = DownloadState.ParityDecoding;
}
}
}
catch (Exception e)
{
item.State = DownloadState.Error;
Log.Error(e);
}
}
}
}