/* Methode zum asynchronen Download einer Datei */
public void DownloadAsync(string url, Stream destStream, int blockSize,
DownloadProgress downloadProgress, DownloadEnd downloadEnd)
{
// Das Download-Status-Objekt, das über das Status-
// Feld des asynchronen Aufrufs weitergegeben wird,
// erzeugen und initialisieren
DownloadStatus downloadStatus = new DownloadStatus();
downloadStatus.BlockSize = blockSize;
downloadStatus.ReadBuffer = new Byte[blockSize];
downloadStatus.DownloadProgress = downloadProgress;
downloadStatus.DownloadEnd = downloadEnd;
downloadStatus.DestStream = destStream;
downloadStatus.manualResetEvent = new ManualResetEvent(false);
downloadStatus.manualResetEvent.Reset();
// WebRequest-Instanz für den Download erzeugen
downloadStatus.Request = WebRequest.Create(url);
// Die Antwort asynchron abfragen
IAsyncResult asyncResult = (IAsyncResult)downloadStatus.Request.BeginGetResponse(
new AsyncCallback(ResponseCallback), downloadStatus);
//downloadStatus.manualResetEvent.WaitOne();
}
/* Konstruktor */
public Download(string url, Stream destStream, int blockSize,
DownloadProgress downloadProgress, DownloadEnd downloadEnd,
DownloadError downloadError)
{
this.Url = url;
this.BlockSize = blockSize;
this.DownloadProgress = downloadProgress;
this.DownloadEnd = downloadEnd;
this.DestStream = destStream;
this.DownloadError = downloadError;
}
/* Methode zum synchronen Download einer Datei */
public void DownloadSync(string url, Stream destStream, int blockSize,
DownloadProgress downloadProgress, DownloadEnd downloadEnd,
DownloadError downloadError)
{
// Download-Objekt erzeugen und initialisieren
Download download = new Download(url, destStream, blockSize,
downloadProgress, downloadEnd, downloadError);
// Download synchron starten
download.PerformDownload();
}
/* Konstruktor */
public Download(string url, Stream destStream, int blockSize,
DownloadProgress downloadProgress, DownloadEnd downloadEnd,
DownloadError downloadError)
{
this.Url = url;
this.BlockSize = blockSize;
this.DownloadProgress = downloadProgress;
this.DownloadEnd = downloadEnd;
this.DestStream = destStream;
this.DownloadError = downloadError ;
}
/* Methode zum synchronen Download einer Datei */
public void DownloadSync(string url, Stream destStream, int blockSize,
DownloadProgress downloadProgress, DownloadEnd downloadEnd,
DownloadError downloadError)
{
// Download-Objekt erzeugen und initialisieren
Download download = new Download(url, destStream, blockSize,
downloadProgress, downloadEnd, downloadError);
// Download synchron starten
download.PerformDownload();
}
/* Methode zum asynchronen Download einer Datei */
public void DownloadAsync(string url, Stream destStream, int blockSize,
DownloadProgress downloadProgress, DownloadEnd downloadEnd,
DownloadError downloadError)
{
// Download-Objekt erzeugen und initialisieren
Download download = new Download(url, destStream, blockSize,
downloadProgress, downloadEnd, downloadError);
// Thread für den Download starten
Thread downloadThread = new Thread(new ThreadStart(download.PerformDownload));
downloadThread.Start();
}
/* Methode zum asynchronen Download einer Datei */
public void DownloadAsync(string url, Stream destStream, int blockSize,
DownloadProgress downloadProgress, DownloadEnd downloadEnd,
DownloadError downloadError)
{
// Download-Objekt erzeugen und initialisieren
Download download = new Download(url, destStream, blockSize,
downloadProgress, downloadEnd, downloadError);
// Thread für den Download starten
Thread downloadThread = new Thread(new ThreadStart(download.PerformDownload));
downloadThread.Start();
}
private void Completed(object sender, AsyncCompletedEventArgs e)
{
sw.Reset();
if (e.Cancelled == true)
{
MessageBox.Show("Download has been canceled.");
}
else
{
Debug.WriteLine("Download completed!");
DownloadEnd?.Invoke(this, EventArgs.Empty);
}
}
/* Methode zum synchronen Download einer Datei */
public void DownloadSync(string url, Stream destStream, int blockSize,
DownloadProgress downloadProgress, DownloadEnd downloadEnd)
{
// WebRequest-Instanz für den Download erzeugen
WebRequest request = WebRequest.Create(url);
// Die Antwort anfordern
WebResponse response = request.GetResponse();
long fileSize = response.ContentLength;
// Den Antwort-Stream ermitteln
Stream responseStream = response.GetResponseStream();
// Stream blockweise lesen und in den Zielstream schreiben
int bytesRead = 0;
int totalBytesRead = 0;
byte[] buffer = new byte[blockSize];
do
{
bytesRead = responseStream.Read(buffer, 0, blockSize);
totalBytesRead += bytesRead;
destStream.Write(buffer, 0, bytesRead);
// Fortschritt melden
if (downloadProgress != null)
{
downloadProgress(DownloadState.ReadingData, totalBytesRead, fileSize);
}
} while (bytesRead > 0);
// Den Response-Stream und das WebResponse-Objekt schließen
responseStream.Close();
response.Close();
// Ende des Download melden
if (downloadEnd != null)
{
downloadEnd(destStream);
}
}
private Task <bool> RunSyncItem(Manifest.SyncItem f,
bool verify, bool simulate,
DownloadProgressChanged dpc, DownloadEnd de, DownloadMessage dm,
CancellationTokenSource cts,
string overrideDestination = null)
{
switch (f.type)
{
case "rsync":
RSyncDownloader dd = new RSyncDownloader(this);
dd.appPath = AppPath;
dd.tmpPath = TmpPath;
dd.VerifyChecksums = verify;
dd.Simulate = simulate;
return(dd.Download(LatestManifest.rsyncUrl + "/" + f.name, f, RootPath,
dpc, de, dm, cts, overrideDestination));
case "delete":
return(Task <bool> .Run(() =>
{
if (f.name.EndsWith("/") && Directory.Exists(RootPath + "/" + f.name))
{
dm.Invoke("Deleting directory " + f.name);
Directory.Delete(RootPath + "/" + f.name, true);
}
else if (File.Exists(RootPath + "/" + f.name))
{
dm.Invoke("Deleting file " + f.name);
File.Delete(RootPath + "/" + f.name);
}
return true;
}));
default:
return(null);
}
}
private Task<bool> RunSyncItem(Manifest.SyncItem f,
bool verify, bool simulate,
DownloadProgressChanged dpc, DownloadEnd de, DownloadMessage dm,
CancellationTokenSource cts,
string overrideDestination = null)
{
switch (f.type)
{
case "rsync":
RSyncDownloader dd = new RSyncDownloader(this);
dd.appPath = AppPath;
dd.tmpPath = TmpPath;
dd.VerifyChecksums = verify;
dd.Simulate = simulate;
return dd.Download(LatestManifest.rsyncUrl + "/" + f.name, f, RootPath,
dpc, de, dm, cts, overrideDestination);
case "delete":
return Task<bool>.Run(() =>
{
if (f.name.EndsWith("/") && Directory.Exists(RootPath + "/" + f.name)) {
dm.Invoke("Deleting directory " + f.name);
Directory.Delete(RootPath + "/" + f.name, true);
} else if (File.Exists(RootPath + "/" + f.name)) {
dm.Invoke("Deleting file " + f.name);
File.Delete(RootPath + "/" + f.name);
}
return true;
});
default:
return null;
}
}
public static void OnDownloadEnd(object sender, DownloadEventArgs ev) => DownloadEnd?.Invoke(sender, ev);
private void OnDownloadEnd(DownloadEndEventArgs e)
{
try { DownloadEnd?.Invoke(this, e); } catch { }
}
