public void CloudBlockBlobDownloadToStreamAPMCancel()
{
byte[] buffer = GetRandomBuffer(1 * 1024 * 1024);
CloudBlobContainer container = GetRandomContainerReference();
try
{
container.Create();
CloudBlockBlob blob = container.GetBlockBlobReference("blob1");
using (MemoryStream originalBlob = new MemoryStream(buffer))
{
using (AutoResetEvent waitHandle = new AutoResetEvent(false))
{
ICancellableAsyncResult result = blob.BeginUploadFromStream(originalBlob,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
blob.EndUploadFromStream(result);
using (MemoryStream downloadedBlob = new MemoryStream())
{
OperationContext operationContext = new OperationContext();
result = blob.BeginDownloadToStream(downloadedBlob, null, null, operationContext,
ar => waitHandle.Set(),
null);
Thread.Sleep(100);
result.Cancel();
waitHandle.WaitOne();
try
{
blob.EndDownloadToStream(result);
}
catch (StorageException ex)
{
Assert.AreEqual(ex.Message, "Operation was canceled by user.");
Assert.AreEqual(ex.RequestInformation.HttpStatusCode, 306);
Assert.AreEqual(ex.RequestInformation.HttpStatusMessage, "Unused");
}
TestHelper.AssertNAttempts(operationContext, 1);
}
}
}
}
finally
{
container.DeleteIfExists();
}
}
public static async Task <string> DownloadToString(this CloudBlockBlob blob)
{
using (var strm = new MemoryStream())
{
await
Task.Factory.FromAsync((cb, state) => blob.BeginDownloadToStream(strm, cb, state),
ar => blob.EndDownloadToStream(ar),
state : null);
await strm.FlushAsync();
strm.Seek(0, SeekOrigin.Begin);
return(await new StreamReader(strm).ReadToEndAsync());
}
}
public void CloudBlockBlobDownloadToStreamAPMRetry()
{
byte[] buffer = GetRandomBuffer(1 * 1024 * 1024);
CloudBlobContainer container = GetRandomContainerReference();
try
{
container.Create();
CloudBlockBlob blob = container.GetBlockBlobReference("blob1");
using (MemoryStream originalBlob = new MemoryStream(buffer))
{
using (AutoResetEvent waitHandle = new AutoResetEvent(false))
{
ICancellableAsyncResult result = blob.BeginUploadFromStream(originalBlob,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
blob.EndUploadFromStream(result);
using (MemoryStream downloadedBlob = new MemoryStream())
{
Exception manglerEx = null;
using (HttpMangler proxy = new HttpMangler(false,
new[]
{
TamperBehaviors.TamperNRequestsIf(
session => ThreadPool.QueueUserWorkItem(state =>
{
Thread.Sleep(1000);
try
{
session.Abort();
}
catch (Exception e)
{
manglerEx = e;
}
}),
2,
AzureStorageSelectors.BlobTraffic().IfHostNameContains(container.ServiceClient.Credentials.AccountName))
}))
{
OperationContext operationContext = new OperationContext();
result = blob.BeginDownloadToStream(downloadedBlob, null, null, operationContext,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
blob.EndDownloadToStream(result);
TestHelper.AssertStreamsAreEqual(originalBlob, downloadedBlob);
}
if (manglerEx != null)
{
throw manglerEx;
}
}
}
}
}
finally
{
container.DeleteIfExists();
}
}