public void UseTransactionalMD5GetTestAPM()
{
BlobRequestOptions optionsWithNoMD5 = new BlobRequestOptions()
{
UseTransactionalMD5 = false,
};
BlobRequestOptions optionsWithMD5 = new BlobRequestOptions()
{
UseTransactionalMD5 = true,
};
byte[] buffer = GetRandomBuffer(3 * 1024 * 1024);
MD5 hasher = MD5.Create();
string md5 = Convert.ToBase64String(hasher.ComputeHash(buffer));
string lastCheckMD5 = null;
int checkCount = 0;
OperationContext opContextWithMD5Check = new OperationContext();
opContextWithMD5Check.ResponseReceived += (_, args) =>
{
if (args.Response.ContentLength >= buffer.Length)
{
lastCheckMD5 = args.Response.Headers[HttpResponseHeader.ContentMd5];
checkCount++;
}
};
CloudBlobContainer container = GetRandomContainerReference();
try
{
container.Create();
using (AutoResetEvent waitHandle = new AutoResetEvent(false))
{
IAsyncResult result;
CloudBlockBlob blockBlob = container.GetBlockBlobReference("blob1");
using (Stream blobStream = blockBlob.OpenWrite())
{
blobStream.Write(buffer, 0, buffer.Length);
blobStream.Write(buffer, 0, buffer.Length);
}
checkCount = 0;
using (Stream stream = new MemoryStream())
{
result = blockBlob.BeginDownloadToStream(stream, null, optionsWithNoMD5, opContextWithMD5Check,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
blockBlob.EndDownloadRangeToStream(result);
Assert.IsNotNull(lastCheckMD5);
result = blockBlob.BeginDownloadToStream(stream, null, optionsWithMD5, opContextWithMD5Check,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
blockBlob.EndDownloadRangeToStream(result);
Assert.IsNotNull(lastCheckMD5);
result = blockBlob.BeginDownloadRangeToStream(stream, buffer.Length, buffer.Length, null, optionsWithNoMD5, opContextWithMD5Check,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
blockBlob.EndDownloadRangeToStream(result);
Assert.IsNull(lastCheckMD5);
result = blockBlob.BeginDownloadRangeToStream(stream, buffer.Length, buffer.Length, null, optionsWithMD5, opContextWithMD5Check,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
blockBlob.EndDownloadRangeToStream(result);
Assert.AreEqual(md5, lastCheckMD5);
result = blockBlob.BeginDownloadRangeToStream(stream, 1024, 4 * 1024 * 1024 + 1, null, optionsWithNoMD5, opContextWithMD5Check,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
blockBlob.EndDownloadRangeToStream(result);
Assert.IsNull(lastCheckMD5);
result = blockBlob.BeginDownloadRangeToStream(stream, 1024, 4 * 1024 * 1024 + 1, null, optionsWithMD5, opContextWithMD5Check,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
StorageException storageEx = TestHelper.ExpectedException <StorageException>(
() => blockBlob.EndDownloadRangeToStream(result),
"Downloading more than 4MB with transactional MD5 should not be supported");
Assert.IsInstanceOfType(storageEx.InnerException, typeof(ArgumentOutOfRangeException));
}
Assert.AreEqual(5, checkCount);
CloudPageBlob pageBlob = container.GetPageBlobReference("blob2");
using (Stream blobStream = pageBlob.OpenWrite(buffer.Length * 2))
{
blobStream.Write(buffer, 0, buffer.Length);
blobStream.Write(buffer, 0, buffer.Length);
}
checkCount = 0;
using (Stream stream = new MemoryStream())
{
result = pageBlob.BeginDownloadToStream(stream, null, optionsWithNoMD5, opContextWithMD5Check,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
pageBlob.EndDownloadRangeToStream(result);
Assert.IsNull(lastCheckMD5);
result = pageBlob.BeginDownloadToStream(stream, null, optionsWithMD5, opContextWithMD5Check,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
StorageException storageEx = TestHelper.ExpectedException <StorageException>(
() => pageBlob.EndDownloadRangeToStream(result),
"Page blob will not have MD5 set by default; with UseTransactional, download should fail");
result = pageBlob.BeginDownloadRangeToStream(stream, buffer.Length, buffer.Length, null, optionsWithNoMD5, opContextWithMD5Check,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
pageBlob.EndDownloadRangeToStream(result);
Assert.IsNull(lastCheckMD5);
result = pageBlob.BeginDownloadRangeToStream(stream, buffer.Length, buffer.Length, null, optionsWithMD5, opContextWithMD5Check,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
pageBlob.EndDownloadRangeToStream(result);
Assert.AreEqual(md5, lastCheckMD5);
result = pageBlob.BeginDownloadRangeToStream(stream, 1024, 4 * 1024 * 1024 + 1, null, optionsWithNoMD5, opContextWithMD5Check,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
pageBlob.EndDownloadRangeToStream(result);
Assert.IsNull(lastCheckMD5);
result = pageBlob.BeginDownloadRangeToStream(stream, 1024, 4 * 1024 * 1024 + 1, null, optionsWithMD5, opContextWithMD5Check,
ar => waitHandle.Set(),
null);
waitHandle.WaitOne();
storageEx = TestHelper.ExpectedException <StorageException>(
() => pageBlob.EndDownloadRangeToStream(result),
"Downloading more than 4MB with transactional MD5 should not be supported");
Assert.IsInstanceOfType(storageEx.InnerException, typeof(ArgumentOutOfRangeException));
}
Assert.AreEqual(5, checkCount);
}
}
finally
{
container.DeleteIfExists();
}
}