private void DownloadParts(Uri uri)
{
myProgressBar1.Visible = true;
myProgressBar1.Progresses = new Dictionary <string, int>();
HttpWebRequest wr = WebRequest.Create(uri) as HttpWebRequest;
wr.Method = "HEAD";
wr.AddRange(0);
WebResponse wrs = wr.GetResponse();
string filename = wrs.ResponseUri.Segments.Last();
long l = wrs.ContentLength;
int part = int.Parse(Math.Floor(l / parts).ToString());
partsready = new Dictionary <int, DownPartClass>();
for (int i = 0; i < parts; i++)
{
myProgressBar1.Progresses.Add("part_" + i, 0);
DownPartClass dpc = new DownPartClass {
uri = uri, i = i, filename = filename, part = part
};
partsready.Add(i, dpc);
ThreadPool.QueueUserWorkItem(DownPart, dpc);
}
}
private void DownloadParts(Uri uri)
{
myProgressBar1.Visible = true;
myProgressBar1.Progresses = new Dictionary<string, int>();
HttpWebRequest wr = WebRequest.Create(uri) as HttpWebRequest;
wr.Method = "HEAD";
wr.AddRange(0);
WebResponse wrs = wr.GetResponse();
string filename = wrs.ResponseUri.Segments.Last();
long l = wrs.ContentLength;
int part = int.Parse(Math.Floor(l / parts).ToString());
partsready = new Dictionary<int, DownPartClass>();
for (int i = 0; i < parts; i++)
{
myProgressBar1.Progresses.Add("part_"+i, 0);
DownPartClass dpc = new DownPartClass { uri = uri, i = i, filename = filename, part = part };
partsready.Add(i, dpc);
ThreadPool.QueueUserWorkItem(DownPart, dpc);
}
}
private void DownPart(object state)
{
DownPartClass dpc = state as DownPartClass;
try
{
this.Invoke((MethodInvoker) delegate
{
myProgressBar1.ChangeColor("part_" + dpc.i, Color.Green);
});
string file = Application.CommonAppDataPath + "\\" + dpc.filename + "_" + dpc.i;
long istart = 0;
if (File.Exists(file))
{
//File.Delete(file);
istart = (new FileInfo(file)).Length;
}
if (istart < dpc.part)
{
HttpWebRequest wrl = WebRequest.Create(dpc.uri) as HttpWebRequest;
wrl.Method = "GET";
wrl.AddRange((dpc.i * dpc.part) + istart, (dpc.i + 1) * dpc.part);
wrl.ReadWriteTimeout = int.Parse(Math.Floor((new TimeSpan(1, 0, 0)).TotalMilliseconds).ToString());
wrl.Timeout = wrl.ReadWriteTimeout;
WebResponse wrsl = wrl.GetResponse();
Stream s = wrsl.GetResponseStream();
using (FileStream fs = new FileStream(file, FileMode.OpenOrCreate))
{
byte[] buffer = new byte[650000];
int icnt = 0;
while ((icnt = s.Read(buffer, 0, buffer.Length)) > 0)
{
fs.Write(buffer, 0, icnt);
partsready[dpc.i].progress += icnt;
if (bCancel)
{
break;
}
}
}
}
else
{
partsready[dpc.i].progress = int.Parse(istart.ToString());
}
partsready[dpc.i].done = true;
}
catch (Exception ex) {
dpc.retries++;
partsready[dpc.i].retries = dpc.retries;
partsready[dpc.i].error = ex;
partsready[dpc.i].paused = true;
this.Invoke((MethodInvoker) delegate
{
myProgressBar1.ChangeColor("part_" + dpc.i, Color.Yellow);
});
if (dpc.retries >= 5)
{
dpc.done = true;
this.Invoke((MethodInvoker) delegate
{
myProgressBar1.ChangeColor("part_" + dpc.i, Color.Red);
});
}
}
if (dpc.part > dpc.progress && dpc.error == null && dpc.retries < 5)
{
dpc.paused = true;
dpc.done = false;
}
var pr = partsready.FirstOrDefault(x => x.Value.paused && !x.Value.done);
if (pr.Value != null)
{
ThreadPool.QueueUserWorkItem(DownPart, pr.Value);
}
if (!bCancel && partsready.All(x => x.Value.done))
{
AssembleFiles(dpc.filename);
}
}
