Cannot upload to azure Blob Storage: The remote server returned an error: (400) Bad Request

Question

I'm trying to create a utility to download file from the internet and upload it again to Azure blob storage. Blob containers already created well; But for some reason i'm getting "Bad Request 400" exception when i tried to upload the file to storage ... Container name is created, small letters, so special characters. But I still do not know why i'm getting the exception!

Please help.

Note:

• I'm not using any emulator ... Directly testing on the cloud.
• All of my containers with "Public Container" access option.

Here is the exception:

An exception of type 'Microsoft.WindowsAzure.Storage.StorageException' 
occurred in Microsoft.WindowsAzure.Storage.dll but was not handled in user code
Additional information: The remote server returned an error: (400) Bad Request.

And here is the code:

foreach (var obj in objectsList)
{
     var containerName = obj.id.Replace("\"", "").Replace("_", "").Trim();
     CloudBlobContainer blobContainer = blobClient.GetContainerReference(containerName);

     if (blobContainer.Exists())
     {
         var fileNamesArr = obj.fileNames.Split(new char[] { '#' }, StringSplitOptions.RemoveEmptyEntries);

         foreach (var sora in fileNamesArr)
         {
             int soraInt = int.Parse(sora.Replace("\"", ""));
             String fileName = String.Format("{0}.mp3", soraInt.ToString("000"));

             var url = String.Format("http://{0}/{1}/{2}", obj.hostName.Replace("\"", ""), obj.id.Replace("\"", ""), fileName.Replace("\"", "")).ToLower();

             var tempFileName = "temp.mp3";

             var downloadedFilePath = Path.Combine(Path.GetTempPath(), tempFileName).ToLower();

             var webUtil = new WebUtils(url);
             await webUtil.DownloadAsync(url, downloadedFilePath).ContinueWith(task =>
             {
                 var blobRef = blobContainer.GetBlockBlobReference(fileName.ToLower());
                 blobRef.Properties.ContentType = GetMimeType(downloadedFilePath);

                 using (var fs = new FileStream(downloadedFilePath, FileMode.Open, FileAccess.Read, FileShare.Read))
                 {
                     blobRef.UploadFromStream(fs); // <--- Exception
                 }
             });
         }
      }
      else
      {
          throw new Exception(obj.id.Replace("\"", "") + " Container not exist!");
      }
}

Edit: The Storage Exception

Microsoft.WindowsAzure.Storage.StorageException: The remote server returned an error: (400) Bad Request. ---> System.Net.WebException: The remote server returned an error: (400) Bad Request. at System.Net.HttpWebRequest.GetRequestStream(TransportContext& context) at System.Net.HttpWebRequest.GetRequestStream() at Microsoft.WindowsAzure.Storage.Core.Executor.Executor.ExecuteSync[T](RESTCommand1 cmd, IRetryPolicy policy, OperationContext operationContext) --- End of inner exception stack trace --- at Microsoft.WindowsAzure.Storage.Core.Executor.Executor.ExecuteSync[T](RESTCommand1 cmd, IRetryPolicy policy, OperationContext operationContext) at Microsoft.WindowsAzure.Storage.Blob.CloudBlockBlob.UploadFromStreamHelper(Stream source, Nullable`1 length, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext) at Microsoft.WindowsAzure.Storage.Blob.CloudBlockBlob.UploadFromStream(Stream source, AccessCondition accessCondition, BlobRequestOptions options, OperationContext operationContext) at TelawatAzureUtility.StorageService.<>c__DisplayClass4.b__12(Task task) in \psf\Home\Documents\Visual Studio 14\Projects\Telawat Azure Utility\TelawatAzureUtility\StorageService.cs:line 128 Request Information RequestID: RequestDate:Sat, 28 Jun 2014 20:12:14 GMT StatusMessage:Bad Request

Edit 2: Request Information:

Edit 3: The problem comes from WebUtils .. I replaced it with below code and it works! I will add weUtils code, maybe you can help to know what is the problem with it.

HttpClient client = new HttpClient();
var stream = await client.GetStreamAsync(url);

WebUtils Code:

public class WebUtils
{
    private Lazy<IWebProxy> proxy;

    public WebUtils(String url)
    {
        proxy = new Lazy<IWebProxy>(() => string.IsNullOrEmpty(url) ? null : new WebProxy {
            Address = new Uri(url), UseDefaultCredentials = true });
    }

    public IWebProxy Proxy
    {
        get { return proxy.Value; }
    }

    public Task DownloadAsync(string requestUri, string filename)
    {
        if (requestUri == null)
            throw new ArgumentNullException("requestUri is missing!");

        return DownloadAsync(new Uri(requestUri), filename);
    }

    public async Task DownloadAsync(Uri requestUri, string filename)
    {
        if (filename == null)
            throw new ArgumentNullException("filename is missing!");

        if (Proxy != null)
        {
            WebRequest.DefaultWebProxy = Proxy;
        }

        using (var httpClient = new HttpClient())
        {
            using (var request = new HttpRequestMessage(HttpMethod.Get, requestUri))
            {
                using (Stream contentStream = await (await httpClient.SendAsync(request)).Content.ReadAsStreamAsync())
                {
                    using (var stream = new FileStream(filename, FileMode.Create, FileAccess.Write))
                    {
                        contentStream.CopyTo(stream);
                        stream.Flush();
                        stream.Close();
                    }
                    contentStream.Close();
                }
            }
        }
    }
}

Also when I tried this code ... the 'Wait' will never finish or completed!

webUtil.DownloadAsync(url, downloadedFilePath).Wait()

Answer 1

Have you tried creating a container manually on azure portal? It has some limitations on what name you can give containers.

For example: Container name cannot contain upper case letters.

If you request a container with an invalid name, it will result in (400) Bad Request, which you are getting. So check your "containerName" string.

Answer 2

I had the same problem. I resolved it by changing the TLS version in the configuration of the storage; the new TLS version (1.2) is not compatible with the older version of the storage client. I changed it to the 1.0 and it works.

The configuration of the storage is in the portal of Azure.

Storage -> Configuration -> TLS Version:

Answer 3

I also got this error with the Azure Storage Message Queues.

The Azure Storage Message Queue names must also be all lowercase. ie: "newqueueitem" name in lowercase.

// Retrieve a reference to a queue.
CloudQueue queue = queueClient.GetQueueReference("newqueueitem");

// Create the queue if it doesn't already exist.
queue.CreateIfNotExists();

Answer 4

If you create a container with an invalid name, it will result in (400) Bad Request. There are some convention for creating container name as below:

1. Container names must start with a letter or number, and can contain only letters, numbers, and the dash (-) character.
2. Every dash (-) character must be immediately preceded and followed by a letter or number; consecutive dashes are not permitted in container names.
3. All letters in a container name must be lowercase.
4. Container names must be from 3 through 63 characters long.

Source: https://learn.microsoft.com/en-us/rest/api/storageservices/naming-and-referencing-containers--blobs--and-metadata