public void beginDownload(downloadfile file)
{
if (this.isDownloading)
{
throw new Exception("A download is already in progress.");
}
_downloadFile = file;
_downloadThread.Start();
}
private void download(object file)
{
this.isDownloading = true;
downloadfile _file = (downloadfile)file;
if (onFileDownloadStart != null)
{
//Invoked the file download start
downloadEventArgs args = new downloadEventArgs();
args.Event = DownloadEvents.DOWNLOAD_START;
args.downloadFile = _file;
args.Progress = 0;
onFileDownloadStart.Invoke(this, args);
FileStream outFile = null;
try
{
string localfolder = Properties.Settings.Default.path.ToString();
System.Diagnostics.Debug.WriteLine("downloading ??? " + localfolder + "\\" + _file.dir + "\\" + _file.filename);
Directory.CreateDirectory(Path.GetDirectoryName(localfolder + "\\" + _file.dir + "\\" + _file.filetempname));
outFile = new FileStream(localfolder + "\\" + _file.dir + "\\" + _file.filetempname, FileMode.OpenOrCreate);
string fileUrl = Properties.Settings.Default.SERVERURL.ToString() + "download.php?filename=" + _file.filemd5 + "&startpoint=" + _file.startpoint;
Uri myUriDowload = new Uri(fileUrl, UriKind.Absolute);
HttpWebRequest fileUrlRequest = (HttpWebRequest)WebRequest.Create(myUriDowload);
var myHttpWebRequest = (HttpWebRequest)fileUrlRequest;
String username = "******";
String password = "******";
String encoded = System.Convert.ToBase64String(System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes(username + ":" + password));
myHttpWebRequest.Headers.Add("Authorization", "Basic " + encoded);
HttpWebResponse fileUrlResponse = (HttpWebResponse)myHttpWebRequest.GetResponse();
// we will read data via the response stream
Stream ReceiveStream = fileUrlResponse.GetResponseStream();
ReceiveStream.ReadTimeout = 30000;
byte[] buffer = new byte[1024];
//TODO: Seek to the start point. In case of partial download, seek to resume point
outFile.Seek(_file.startpoint, SeekOrigin.Begin);
int bytesRead = 0;
double downloadsize = _file.startpoint;
while ((bytesRead = ReceiveStream.Read(buffer, 0, buffer.Length)) > 0)
{
downloadsize = downloadsize + bytesRead;
outFile.Write(buffer, 0, bytesRead);
//Download completed
args = new downloadEventArgs();
args.Event = DownloadEvents.DOWNLOAD_PROGRESS;
args.downloadFile = _file;
args.Progress = (int)((100 * downloadsize) / _file.filesize);
onFileDownloadProgress.Invoke(this, args);
if (_cancellationPending)
{
//Download completed
args = new downloadEventArgs();
args.Event = DownloadEvents.DOWNLOAD_STOPPED;
args.downloadFile = _file;
args.Progress = (int)((100 * downloadsize) / _file.filesize);;
onFileDownloadStopped.Invoke(this, args);
outFile.Close();
this.isDownloading = false;
return;
}
}
outFile.Close();
//Download completed
args = new downloadEventArgs();
args.Event = DownloadEvents.DOWNLOAD_COMPLETE;
args.downloadFile = _file;
args.Progress = 100;
onFileDownloadComplete.Invoke(this, args);
outFile.Close();
this.isDownloading = false;
}
catch (Exception ex)
{
//Download Interrupted
args = new downloadEventArgs();
args.Event = DownloadEvents.DOWNLOAD_INTERRUPTED;
args.downloadFile = _file;
args.Progress = 0;
if (outFile != null)
{
outFile.Close();
}
onFileDownloadInterrupted.Invoke(this, args);
this.isDownloading = false;
}
}
}
