public UpdatePresenter(Action<Exception> exceptionLogger, ApplicationUpdate updateData,
IWebProxy proxy, IUpdateView updateView, ISaveFileDialogView saveFileView,
IWebOperation webOperation)
{
_exceptionLogger = exceptionLogger;
_updateData = updateData;
_proxy = proxy;
_updateView = updateView;
_saveFileView = saveFileView;
_webOperation = webOperation;
_updateView.AttachPresenter(this);
}
private void PerformDownload(string url)
{
if (_webOperation == null)
{
// create
_webOperation = WebOperation.Create(url);
}
// set proxy (if applicable)
if (_proxy != null) _webOperation.WebRequest.Proxy = _proxy;
// listen for progress messages
_webOperation.ProgressChanged += WebOperationProgressChanged;
// set the view for download
SetViewControlsForDownload(url);
// execute the download
_webOperation.Download(LocalFilePath);
}
private void PerformDownloadCallback(IAsyncResult result)
{
var action = (Action<string>)result.AsyncState;
try
{
action.EndInvoke(result);
if (_webOperation.Result.Equals(WebOperationResult.Completed))
{
// verify, throws exception on error
VerifyDownload();
// no errors, set ready flag
UpdateReady = true;
// success, close the view
_updateView.CloseView();
}
// not completed, let the user try again if they wish
else
{
SetViewControlsForUpdateSelection();
}
}
catch (Exception ex)
{
LogException(ex);
string message = String.Format(CultureInfo.CurrentCulture,
"Download failed with the following error:{0}{0}{1}",
Environment.NewLine, ex.Message);
_updateView.ShowErrorMessage(message);
// download error, let the user try again if they wish
SetViewControlsForUpdateSelection();
}
finally
{
// clean up
_webOperation.ProgressChanged -= WebOperationProgressChanged;
_webOperation = null;
// signal listeners
OnDownloadFinished(EventArgs.Empty);
}
}
/// <summary>
/// Check an HTTP Connection.
/// </summary>
/// <param name="httpWebOperation">Web Operation.</param>
/// <param name="username">Http Login Username.</param>
/// <param name="password">Http Login Password.</param>
/// <exception cref="ArgumentException">Throws if httpWebOperation is null.</exception>
public void HttpCheckConnection(IWebOperation httpWebOperation, string username, string password)
{
if (httpWebOperation == null) throw new ArgumentNullException("httpWebOperation", "Argument 'httpWebOperation' cannot be null.");
httpWebOperation.OperationRequest.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
httpWebOperation.OperationRequest.Timeout = 5000; // 5 second timeout
SetNetworkCredentials(httpWebOperation.OperationRequest.Request, username, password);
SetProxy(httpWebOperation.OperationRequest.Request);
httpWebOperation.CheckConnection();
}
/// <summary>
/// Download a File via Http.
/// </summary>
/// <param name="httpWebOperation">Web Operation.</param>
/// <param name="localFilePath">Path to local file.</param>
/// <param name="username">Http Login Username.</param>
/// <param name="password">Http Login Password.</param>
/// <exception cref="ArgumentNullException">Throws if resourceUri is null.</exception>
/// <exception cref="ArgumentException">Throws if localFilePath is null or empty.</exception>
public void HttpDownloadHelper(IWebOperation httpWebOperation, string localFilePath, string username, string password)
{
if (httpWebOperation == null) throw new ArgumentNullException("httpWebOperation");
if (String.IsNullOrEmpty(localFilePath)) throw new ArgumentException("Argument 'localFilePath' cannot be a null or empty string.");
_httpWebOperation = httpWebOperation;
_httpWebOperation.WebOperationProgress += OnHttpWebOperationProgress;
_httpWebOperation.OperationRequest.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
SetNetworkCredentials(_httpWebOperation.OperationRequest.Request, username, password);
SetProxy(_httpWebOperation.OperationRequest.Request);
_httpWebOperation.Download(localFilePath);
}
/// <summary>
/// Check an FTP Connection.
/// </summary>
/// <param name="ftpWebOperation">Web Operation.</param>
/// <param name="username">Ftp Login Username.</param>
/// <param name="password">Ftp Login Password.</param>
/// <param name="ftpMode">Ftp Transfer Mode.</param>
/// <exception cref="ArgumentException">Throws if ftpWebOperation is null.</exception>
public void FtpCheckConnection(IWebOperation ftpWebOperation, string username, string password, FtpMode ftpMode)
{
if (ftpWebOperation == null) throw new ArgumentNullException("ftpWebOperation");
var ftpWebRequest = (IFtpWebRequest)ftpWebOperation.WebRequest;
ftpWebRequest.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
ftpWebRequest.KeepAlive = false; // Close the Request
ftpWebRequest.Timeout = 5000; // 5 second timeout
ftpWebRequest.SetFtpMode(ftpMode);
ftpWebOperation.WebRequest.SetNetworkCredentials(username, password);
ftpWebOperation.CheckConnection();
}
/// <summary>
/// Get the Length of the Http Download.
/// </summary>
/// <param name="httpWebOperation">Web Operation.</param>
/// <param name="username">Http Login Username.</param>
/// <param name="password">Http Login Password.</param>
/// <exception cref="ArgumentNullException">Throws if resourceUri is null.</exception>
public long GetHttpDownloadLength(IWebOperation httpWebOperation, string username, string password)
{
if (httpWebOperation == null) throw new ArgumentNullException("httpWebOperation");
_httpWebOperation = httpWebOperation;
_httpWebOperation.WebOperationProgress += OnHttpWebOperationProgress;
_httpWebOperation.OperationRequest.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
SetNetworkCredentials(_httpWebOperation.OperationRequest.Request, username, password);
SetProxy(_httpWebOperation.OperationRequest.Request);
return _httpWebOperation.GetDownloadLength();
}
/// <summary>
/// Get the Length of the Http Download.
/// </summary>
/// <param name="ftpWebOperation">Web Operation.</param>
/// <param name="username">Http Login Username.</param>
/// <param name="password">Http Login Password.</param>
/// <param name="ftpMode">Ftp Transfer Mode.</param>
/// <exception cref="ArgumentNullException">Throws if resourceUri is null.</exception>
public long GetFtpDownloadLength(IWebOperation ftpWebOperation, string username, string password, FtpMode ftpMode)
{
if (ftpWebOperation == null) throw new ArgumentNullException("ftpWebOperation", "Argument 'httpWebOperation' cannot be null.");
ftpWebOperation.WebRequest.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
((IFtpWebRequest)ftpWebOperation.WebRequest).SetFtpMode(ftpMode);
ftpWebOperation.WebRequest.SetNetworkCredentials(username, password);
return ftpWebOperation.GetDownloadLength();
}
/// <summary>
/// Download a File via Ftp.
/// </summary>
/// <param name="ftpWebOperation">Web Operation.</param>
/// <param name="localFilePath">Path to local file.</param>
/// <param name="username">Ftp Login Username.</param>
/// <param name="password">Ftp Login Password.</param>
/// <param name="ftpMode">Ftp Transfer Mode.</param>
/// <exception cref="ArgumentNullException">Throws if ftpWebOperation is null.</exception>
/// <exception cref="ArgumentException">Throws if localFilePath is null or empty.</exception>
public void FtpDownloadHelper(IWebOperation ftpWebOperation, string localFilePath, string username, string password, FtpMode ftpMode)
{
if (ftpWebOperation == null) throw new ArgumentNullException("ftpWebOperation");
if (String.IsNullOrEmpty(localFilePath)) throw new ArgumentException("Argument 'localFilePath' cannot be a null or empty string.");
ftpWebOperation.WebRequest.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
((IFtpWebRequest)ftpWebOperation.WebRequest).SetFtpMode(ftpMode);
ftpWebOperation.WebRequest.SetNetworkCredentials(username, password);
ftpWebOperation.Download(localFilePath);
}
internal void FtpUploadHelper(IWebOperation ftpWebOperation, Stream localStream, int maximumLength, string username, string password, FtpMode ftpMode)
{
if (ftpWebOperation == null) throw new ArgumentNullException("ftpWebOperation");
if (localStream == null) throw new ArgumentNullException("localStream");
ftpWebOperation.WebRequest.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
((IFtpWebRequest)ftpWebOperation.WebRequest).SetFtpMode(ftpMode);
ftpWebOperation.WebRequest.SetNetworkCredentials(username, password);
if (maximumLength >= 0 && localStream.Length >= maximumLength)
{
localStream.Position = localStream.Length - maximumLength;
}
ftpWebOperation.Upload(localStream);
}
internal void FtpUploadHelper(IWebOperation ftpWebOperation, Stream localStream, string username, string password, FtpMode ftpMode)
{
FtpUploadHelper(ftpWebOperation, localStream, -1, username, password, ftpMode);
}
internal void FtpUploadHelper(IWebOperation ftpWebOperation, string localFilePath, string username, string password, FtpMode ftpMode)
{
FtpUploadHelper(ftpWebOperation, localFilePath, -1, username, password, ftpMode);
}
