/// <summary> /// Uploads the block list. /// </summary> /// <param name="blocks">The blocks to upload.</param> /// <param name="options">An object that specifies any additional options for the request.</param> /// <returns>A <see cref="TaskSequence"/> that uploads the block list.</returns> internal TaskSequence UploadBlockList(List <PutBlockListItem> blocks, BlobRequestOptions options) { if (options == null) { throw new ArgumentNullException("modifers"); } var request = ProtocolHelper.GetWebRequest(this.ServiceClient, options, (timeout) => BlobRequest.PutBlockList(this.TransformedAddress, timeout, this.Properties, null)); options.AccessCondition.ApplyCondition(request); BlobRequest.AddMetadata(request, this.Metadata); using (var memoryStream = new SmallBlockMemoryStream(Constants.DefaultBufferSize)) { BlobRequest.WriteBlockListBody(blocks, memoryStream); CommonUtils.ApplyRequestOptimizations(request, memoryStream.Length); memoryStream.Seek(0, SeekOrigin.Begin); // Compute the MD5 var md5 = System.Security.Cryptography.MD5.Create(); request.Headers[HttpRequestHeader.ContentMd5] = Convert.ToBase64String(md5.ComputeHash(memoryStream)); this.ServiceClient.Credentials.SignRequest(request); memoryStream.Seek(0, SeekOrigin.Begin); // Retrieve the stream var requestStreamTask = request.GetRequestStreamAsync(); yield return(requestStreamTask); using (Stream requestStream = requestStreamTask.Result) { // Copy the data var copyTask = new InvokeTaskSequenceTask(() => { return(memoryStream.WriteTo(requestStream)); }); yield return(copyTask); // Materialize any exceptions var scratch = copyTask.Result; } } // Get the response var responseTask = request.GetResponseAsyncWithTimeout(this.ServiceClient, options.Timeout); yield return(responseTask); using (var response = responseTask.Result as HttpWebResponse) { ParseSizeAndLastModified(response); this.Properties.Length = 0; } }