private void temp_DownloadPartCompleted(object sender, EventArgs e)
{
WaitOrResumeAll(PartialDownloaderList, true);
if (TotalBytesReceived == Size)
{
UpdateProgress();
MergeParts();
return;
}
OrderByRemaining(PartialDownloaderList);
int rem = PartialDownloaderList[0].RemainingBytes;
if (rem < 50 * 1024)
{
WaitOrResumeAll(PartialDownloaderList, false);
return;
}
int from = PartialDownloaderList[0].CurrentPosition + rem / 2;
int to = PartialDownloaderList[0].To;
if (from > to)
{
WaitOrResumeAll(PartialDownloaderList, false);
return;
}
PartialDownloaderList[0].To = from - 1;
WaitOrResumeAll(PartialDownloaderList, false);
PartialDownloader temp = new PartialDownloader(_url, TempFileDirectory, Guid.NewGuid().ToString(), from, to, true);
temp.DownloadPartCompleted += temp_DownloadPartCompleted;
temp.DownloadPartProgressChanged += temp_DownloadPartProgressChanged;
PartialDownloaderList.Add(temp);
temp.Start();
}
/// <summary>
/// 唤醒下载
/// </summary>
public void Resume()
{
int count = PartialDownloaderList.Count;
for (int i = 0; i < count; i++)
{
if (PartialDownloaderList[i].Stopped)
{
int from = PartialDownloaderList[i].CurrentPosition + 1;
int to = PartialDownloaderList[i].To;
if (from > to)
{
continue;
}
PartialDownloader temp = new PartialDownloader(_url, TempFileDirectory, Guid.NewGuid().ToString(), from, to, _rangeAllowed);
temp.DownloadPartProgressChanged += temp_DownloadPartProgressChanged;
temp.DownloadPartCompleted += temp_DownloadPartCompleted;
PartialDownloaderList.Add(temp);
PartialDownloaderList[i].To = PartialDownloaderList[i].CurrentPosition;
temp.Start();
}
}
}
void CreateFirstPartitions()
{
Size = GetContentLength(_url, ref _rangeAllowed, ref _url);
int maximumPart = (int)(Size / (25 * 1024));
maximumPart = maximumPart == 0 ? 1 : maximumPart;
if (!_rangeAllowed)
{
NumberOfParts = 1;
}
else if (NumberOfParts > maximumPart)
{
NumberOfParts = maximumPart;
}
for (int i = 0; i < NumberOfParts; i++)
{
PartialDownloader temp = CreateNewPd(i, NumberOfParts, Size);
temp.DownloadPartProgressChanged += temp_DownloadPartProgressChanged;
temp.DownloadPartCompleted += temp_DownloadPartCompleted;
PartialDownloaderList.Add(temp);
temp.Start();
}
}