private void DownloadNextItem()
{
while (true)
{
DownloadClient <DownloadItem> client = _clients.Take();
DownloadItem di;
if (_filequeue.TryDequeue(out di))
{
if (di.UseTempPath)
{
client.DownloadFileAsync(di.DownloadUri, di.TempPath, di);
}
else
{
client.DownloadFileAsync(di.DownloadUri, di.Path, di);
}
RaiseDownloadStarted(new FileDownloadStartedArgs {
DownloadItem = di, ClientId = client.ClientId
});
}
if (_filequeue.Count == 0)
{
break;
}
}
}
private void OnDownloadProgressChanged(DownloadClient <DownloadItem> sender, DownloadProgressChangedArgs e, DownloadItem userToken)
{
var item = new FileDownloadProgressChangedArgs();
item.ReceivedBytes = e.ReceivedBytes;
item.ClientId = sender.ClientId;
item.TotalBytesToBeRecieved = e.TotalBytesToBeRecieved;
item.ProgressPercentage = e.ProgressPercentage;
item.DownloadItem = userToken;
item.DownloadSpeed = e.DownloadSpeed;
RaiseDownloadProgressChanged(item);
}
public DownloadMultipleFiles(ConcurrentQueue <DownloadItem> filequeue, int clientcount = 1, bool autoRedownload = false)
{
if (clientcount < CLIENT_COUNT_MIN)
{
clientcount = CLIENT_COUNT_MIN;
}
if (clientcount > CLIENT_COUNT_MAX)
{
clientcount = CLIENT_COUNT_MAX;
}
ClientCount = clientcount;
_filequeue = filequeue;
DownloadToComplete = filequeue.Count;
_clients = new BlockingCollection <DownloadClient <DownloadItem> >();
for (int i = 0; i < clientcount; i++)
{
var client = new DownloadClient <DownloadItem>(i, 200);
client.DownloadFileCompleted += OnDownloadCompleted;
client.DownloadProgressChanged += OnDownloadProgressChanged;
_clients.Add(client);
}
}
public async void OnDownloadCompleted(DownloadClient <DownloadItem> sender, DownloadCompletedArgs e, DownloadItem userToken)
{
_clients.Add(sender); //클라이언트 큐에 추가
Downloaded++; //다운로드된 아이템 추가(DownloadFileAsync는 비동기-동기화를 쓰기때문에 InterLocked를 쓸 필요가 없다.)
DownloadItem di = userToken;
FileDownloadCompletedArgs args = new FileDownloadCompletedArgs();
args.DownloadedItem = di;
args.DownloadQueue = _filequeue.Count;
args.ClientId = sender.ClientId;
args.Downloaded = Downloaded;
args.DownloadToComplete = DownloadToComplete;
args.ProgressPercentage = Math.Round((double)(100 * Downloaded) / DownloadToComplete);
if (di.UseFileIntegrityCheck) // 파일 무결성 검사
{
args.DownloadedFileHash = await FileHashing.GetFileHashAsync(di.Path, di.HashType);
if (di.FileHash != args.DownloadedFileHash)
{
args.FileIntegrity = false;
}
else
{
args.FileIntegrity = true;
}
}
if (di.UseAutoRedownloadWhenFileIsCracked) //파일 깨졌다면 재다운로드
{
if (!args.FileIntegrity)
{
if (di.UseTempPath)
{
File.Delete(di.TempPath);
}
else
{
File.Delete(di.Path);
}
EnqueueItem(userToken);
}
}
if (di.UseTempPath)
{
string path = Path.GetDirectoryName(di.Path);
if (!System.IO.Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
string temppath = Path.GetDirectoryName(di.TempPath);
if (!System.IO.Directory.Exists(temppath))
{
Directory.CreateDirectory(temppath);
}
File.Delete(di.Path);
File.Move(di.TempPath, di.Path);
}
RaiseDownloadCompleted(args);
if (Downloaded == DownloadToComplete)
{
RaiseAllDownloadCompleted(new AllFileDownloadCompletedArgs());
}
}
