private void Process()
{
try
{
if (Info == null)
{
State = Status.GettingHeaders;
GetHeaders();
aop.Post(delegate { DownloadInfoReceived.Raise(this, EventArgs.Empty); }, null);
}
var append = RemainingRangeStart > 0;
var bytesRead = 0;
var buffer = new byte[2 * 1024];
State = Status.SendingRequest;
using (var response = RequestHelper.CreateRequestGetResponse(Info, RemainingRangeStart, BeforeSendingRequest, AfterGettingResponse))
{
State = Status.GettingResponse;
using (var responseStream = response.GetResponseStream())
using (var file = FileHelper.CheckFile(FullFileName, append))
{
while (allowDownload && (bytesRead = responseStream.Read(buffer, 0, buffer.Length)) > 0)
{
State = Status.Downloading;
file.Write(buffer, 0, bytesRead);
TotalBytesReceived += bytesRead;
speedBytesTotal += bytesRead;
aop.Post(delegate
{
ProgressChanged.Raise(this,
new ProgressChangedEventArgs(SpeedInBytes, this.Progress, TotalBytesReceived));
}, Progress);
}
}
}
if (RemainingRangeStart > Info.Length)
{
throw new Exception("Total bytes received overflows content length");
}
if (TotalBytesReceived == Info.Length)
{
State = Status.Completed;
DownloadCompleted.Raise(this, EventArgs.Empty);
}
else if (!allowDownload)
{
State = Status.Paused;
}
}
catch (Exception ex)
{
State = Status.ErrorOccured;
aop.Post(delegate
{
ErrorOccured.Raise(this, new ErrorEventArgs(ex));
}, null);
}
}
private void cd_ResponseReceived(object sender, ResponseReceivedEventArgs e)
{
var cd = (HttpRangeDownloader)sender;
if (Info == null)
{
Info = HttpDownloadInfo.GetFromResponse(e.Response, Url);
LastInfo = Info.Clone();
cd.Info = Info.Clone();
cd.Wait = Info.AcceptRanges;
var chunkedHeader = e.Response.Headers[HttpResponseHeader.TransferEncoding];
UseChunk = Info.AcceptRanges && chunkedHeader != null && chunkedHeader.ToLower() == "chunked";
Ranges.First().End = Info.ContentSize - 1;
//NofThread = Info.AcceptRanges ? NofThread : 1;
DownloadInfoReceived.Raise(this, EventArgs.Empty);
}
if (NofActiveThreads > 1 && Info.AcceptRanges && Info.ResumeCapability != Resumeability.Yes)
{
Info.ResumeCapability = Resumeability.Yes;
foreach (var a in cdList)
{
Info.AcceptRanges = true;
a.Info.AcceptRanges = true;
}
foreach (var item in cdList.Where(x => x.Wait))
{
item.Wait = false;
}
}
if (Info.ContentSize < 10 * 1024 + 1)
{
foreach (var item in cdList.Where(x => x.Wait))
{
item.Wait = false;
}
}
createNewThreadIfRequired();
}
private void Process()
{
try
{
//Get the download headers if not exists
if (Info == null)
{
State = Status.GettingHeaders;
GetHeaders();
aop.Post(delegate { DownloadInfoReceived.Raise(this, EventArgs.Empty); }, null);
}
//Gets where download left
var append = RemainingRangeStart > 0;
var bytesRead = 0;
var buffer = new byte[2 * 1024];
State = Status.SendingRequest;
using (var response = RequestHelper.CreateRequestGetResponse(Info, RemainingRangeStart, BeforeSendingRequest, AfterGettingResponse, Info.IsChunked))
{
State = Status.GettingResponse;
using (var responseStream = response.GetResponseStream())
using (var file = FileHelper.CheckFile(FullFileName, append, LastMD5Checksum))
{
while (allowDownload && (bytesRead = responseStream.Read(buffer, 0, buffer.Length)) > 0)
{
State = Status.Downloading;
file.Write(buffer, 0, bytesRead);
TotalBytesReceived += bytesRead;
speedBytesTotal += bytesRead;
aop.Post(delegate
{
ProgressChanged.Raise(this,
new ProgressChangedEventArgs(SpeedInBytes, this.Progress, TotalBytesReceived));
}, Progress);
}
}
}
if (Info.Length > 0 && RemainingRangeStart > Info.Length)
{
throw new Exception("Total bytes received overflows content length");
}
if (TotalBytesReceived == Info.Length || (Info.Length < 1 && allowDownload))
{
State = Status.Completed;
DownloadCompleted.Raise(this, EventArgs.Empty);
}
else if (!allowDownload)
{
State = Status.Paused;
DownloadPaused.Raise(this, EventArgs.Empty);
}
}
catch (Exception ex)
{
if (TotalBytesReceived == Info.Length)
{
State = Status.Completed;
DownloadCompleted.Raise(this, EventArgs.Empty);
}
else if (!allowDownload)
{
State = Status.Paused;
DownloadPaused.Raise(this, EventArgs.Empty);
}
else
{
LastError = ex;
State = Status.ErrorOccured;
aop.Post(delegate
{
ErrorOccured.Raise(this, new ErrorEventArgs(ex));
}, null);
}
}
finally
{
if (LastError == null || !(LastError is FileValidationFailedException))
{
LastMD5Checksum = FileHelper.CalculateMD5(FullFileName);
}
}
}
