void DownloadWindow_Closed(object sender, EventArgs e) { try { if (cAWebClient != null) { cAWebClient.CancelAsync(); cAWebClient.Dispose(); } } catch { } }
internal string UploadFileToVF(string zipFile, string swiftFilename, UploadPercent callback) { Login(); string fileUploadInfo = SendGetRequest(ServerUrl + "/testbench/client_upload_url?filename=" + HttpUtility.UrlEncode(swiftFilename)); if (fileUploadInfo == null) { // job creation failed //job.Status = Job.StatusEnum.Failed; return(null); } int maxProgress = 0; object maxProgressLock = new object(); dynamic fileUploadInfoJson = Newtonsoft.Json.Linq.JObject.Parse(fileUploadInfo); string fileUploadUrl = fileUploadInfoJson["url"].Value; try { try { using (CookieAwareWebClient webClient = new CookieAwareWebClient()) { webClient.cookies = this.AuthCookies; webClient.Timeout = HTTP_WEB_TIMEOUT_BASE; Semaphore progress = new Semaphore(0, int.MaxValue); Semaphore completed = new Semaphore(0, 1); UploadFileCompletedEventArgs completedData = null; webClient.UploadFileCompleted += delegate(object sender, UploadFileCompletedEventArgs e) { completedData = e; completed.Release(); }; webClient.UploadProgressChanged += delegate(object sender, UploadProgressChangedEventArgs e) { lock (maxProgressLock) { int percentProgress = (int)(((double)e.BytesSent / e.TotalBytesToSend) * 99.0); if (percentProgress > maxProgress) { // e.ProgressPercentage is not correct, as (almost) all the time is spent uploading maxProgress = percentProgress; callback(maxProgress); } } progress.Release(); }; webClient.UploadFileAsync(new Uri(fileUploadUrl), "PUT", zipFile); while (true) { WaitHandle[] handles = new WaitHandle[] { completed, progress }; int timeout = HTTP_WEB_TIMEOUT_BASE; lock (maxProgressLock) { // Workaround for Fiddler proxy: Fiddler accepts all the data at once, then uploads to VF if (maxProgress > 98) { handles = new WaitHandle[] { completed }; timeout = HTTP_WEB_REQUEST_TIMEOUT; } } int handle = WaitHandle.WaitAny(handles, timeout); if (handle == 0) { lock (maxProgressLock) { maxProgress = 100; callback(maxProgress); } break; } if (handle == System.Threading.WaitHandle.WaitTimeout) { webClient.CancelAsync(); throw new WebException("Connection timed out"); } if (handle != 1) { throw new Exception(); } } Trace.TraceInformation("Upload to S3 " + Encoding.UTF8.GetString(completedData.Result)); return(fileUploadUrl); } } catch (System.Reflection.TargetInvocationException ex) { throw ex.InnerException; } } catch (WebException ex) { Trace.TraceError("Error uploading to {0}. Exception follows", fileUploadUrl); Trace.TraceError(ex.ToString()); } return(null); }
private async Task <string> DownloadResumeSupportAsync([NotNull] CookieAwareWebClient client, [NotNull] FlexibleLoaderGetPreferredDestinationCallback getPreferredDestination, [CanBeNull] FlexibleLoaderReportDestinationCallback reportDestination, [CanBeNull] Func <bool> checkIfPaused, IProgress <long> progress, CancellationToken cancellation) { // Common variables string filename = null, selectedDestination = null, actualFootprint = null; Stream remoteData = null; var resumeSupported = ResumeSupported; try { // Read resume-related data and remove it to avoid conflicts var resumeDestination = CacheStorage.Get <string>(_keyDestination); var resumePartiallyLoadedFilename = CacheStorage.Get <string>(_keyPartiallyLoadedFilename); var resumeLastWriteDate = CacheStorage.Get <DateTime?>(_keyLastWriteDate); var resumePreviousFootprint = CacheStorage.Get <string>(_keyFootprint); ClearResumeData(); // Collect known information for destination callback var information = FlexibleLoaderMetaInformation.FromLoader(this); // Opening stream to read… var headRequest = HeadRequestSupported && resumeDestination != null; using (headRequest ? client.SetMethod("HEAD") : null) { Logging.Warning($"Initial request: {(headRequest ? "HEAD" : "GET")}"); remoteData = await client.OpenReadTaskAsync(Url); } cancellation.ThrowIfCancellationRequested(); // Maybe we’ll be lucky enough to load the most accurate data if (client.ResponseHeaders != null) { if (long.TryParse(client.ResponseHeaders[HttpResponseHeader.ContentLength] ?? "", NumberStyles.Any, CultureInfo.InvariantCulture, out var length)) { TotalSize = information.TotalSize = length; } if (TryGetFileName(client.ResponseHeaders, out var fileName)) { FileName = information.FileName = fileName; } // For example, Google Drive responds with “none” and yet allows to download file partially, // so this header will only be checked if value is not defined. if (resumeSupported == null) { var accept = client.ResponseHeaders[HttpResponseHeader.AcceptRanges] ?? ""; if (accept.Contains("bytes")) { resumeSupported = true; } else if (accept.Contains("none")) { resumeSupported = false; } } client.LogResponseHeaders(); } // Was the file partially loaded before? var partiallyLoaded = ResumeSupported != false && resumePartiallyLoadedFilename != null ? new FileInfo(FileUtils.EnsureFilenameIsValid(resumePartiallyLoadedFilename)) : null; if (partiallyLoaded != null) { Logging.Warning("Not finished: " + partiallyLoaded); } // Does it still exist if (partiallyLoaded?.Exists != true) { Logging.Warning($"Partially downloaded file “{partiallyLoaded?.FullName}” does not exist"); partiallyLoaded = null; } // If so, wasn’t it changed since the last time? if (partiallyLoaded?.LastWriteTime > resumeLastWriteDate + TimeSpan.FromMinutes(5)) { Logging.Warning($"Partially downloaded file is newer that it should be: {partiallyLoaded.LastWriteTime}, expected: {resumeLastWriteDate}"); partiallyLoaded = null; } // Looks like file is partially downloaded, but let’s ensure link still leads to the same content actualFootprint = GetFootprint(information, client.ResponseHeaders); if (partiallyLoaded != null && resumePreviousFootprint != actualFootprint) { Logging.Warning($"Footprints don’t match: {resumePreviousFootprint}≠{actualFootprint}"); partiallyLoaded = null; } // Let’s check where to load data, which is potentially the most actual data at this point var destination = getPreferredDestination(Url, information); selectedDestination = destination.Filename; if (partiallyLoaded != null && (!destination.CanResumeDownload || !FileUtils.ArePathsEqual(selectedDestination, resumeDestination))) { Logging.Warning($"Different destination chosen: {selectedDestination} (before: {resumeDestination})"); partiallyLoaded = null; } // TODO: Check that header? // Where to write? // ReSharper disable once MergeConditionalExpression filename = partiallyLoaded != null ? partiallyLoaded.FullName : FileUtils.EnsureUnique(true, destination.Filename); reportDestination?.Invoke(filename); // Set cancellation token cancellation.Register(o => client.CancelAsync(), null); // Open write stream if (partiallyLoaded != null) { var rangeFrom = partiallyLoaded.Length; using (client.SetRange(new Tuple <long, long>(rangeFrom, -1))) { Logging.Warning($"Trying to resume download from {rangeFrom} bytes…"); remoteData.Dispose(); remoteData = await client.OpenReadTaskAsync(Url); cancellation.ThrowIfCancellationRequested(); client.LogResponseHeaders(); // It’s unknown if resume is supported or not at this point if (resumeSupported == null) { var bytes = new byte[16]; var firstBytes = await remoteData.ReadAsync(bytes, 0, bytes.Length); cancellation.ThrowIfCancellationRequested(); if (CouldBeBeginningOfAFile(bytes)) { using (var file = File.Create(filename)) { Logging.Warning("File beginning found, restart download"); file.Write(bytes, 0, firstBytes); await CopyToAsync(remoteData, file, checkIfPaused, progress, cancellation); cancellation.ThrowIfCancellationRequested(); } Logging.Write("Download finished"); return(filename); } rangeFrom += firstBytes; } using (var file = new FileStream(filename, FileMode.Append, FileAccess.Write)) { await CopyToAsync(remoteData, file, checkIfPaused, new Progress <long>(v => { progress?.Report(v + rangeFrom); }), cancellation); cancellation.ThrowIfCancellationRequested(); } } } else { if (headRequest) { Logging.Warning("Re-open request to be GET"); remoteData.Dispose(); remoteData = await client.OpenReadTaskAsync(Url); } using (var file = File.Create(filename)) { Logging.Debug("Downloading the whole file…"); await CopyToAsync(remoteData, file, checkIfPaused, progress, cancellation); cancellation.ThrowIfCancellationRequested(); } } Logging.Write("Download finished"); return(filename); } catch (Exception e) when(e is WebException || e.IsCancelled()) { Logging.Write("Download is interrupted! Saving details to resume later…"); var download = filename == null ? null : new FileInfo(filename); if (download?.Exists == true && filename.Length > 0) { CacheStorage.Set(_keyDestination, selectedDestination); CacheStorage.Set(_keyPartiallyLoadedFilename, filename); CacheStorage.Set(_keyFootprint, actualFootprint); CacheStorage.Set(_keyLastWriteDate, download.LastWriteTime); } else { ClearResumeData(); } throw; } finally { remoteData?.Dispose(); } }
public void StopDownloadAsync() { webClient.CancelAsync(); }