将文件上传到Azure CDN时如何获取有关400错误请求错误的更多信息

Question

Is there a way I can find out more details about why Azure Storage rejected the message? Some way to turn on debugging via Azure? More details via wire shark?

This happens from CloudFile.UploadFromStream(...)

I've tried about 8 solutions for the 400 Bad Request when trying to upload a file to an Azure CDN . It seems like people point out issues with the code, in various ways that the error just does not express.

I've spent about 4 hours with no luck, and nothing more specific to look at.

Please note, I have not posted the code, as I am not looking for a solution to my specific issue as much as finding a solution that I can use in more situations.

Answer 1

I would suggest looking into StorageException class, especially RequestInformation member of that class which is of type RequestResult . It contains useful information about the error.

Here's an example.

    static void UnderstandStorageException()
    {
        var cred = new StorageCredentials(accountName, accountKey);
        var account = new CloudStorageAccount(cred, true);
        var client = account.CreateCloudBlobClient();
        var container = client.GetContainerReference("container");
        var blockBlob = container.GetBlockBlobReference("something.txt");
        try
        {
            blockBlob.UploadFromFile(@"D:\test.txt");
            blockBlob.AcquireLease(TimeSpan.FromSeconds(10), Guid.NewGuid().ToString());
            blockBlob.Delete();
        }
        catch (StorageException excep)
        {
            var requestInformation = excep.RequestInformation;
            Console.WriteLine(requestInformation.HttpStatusCode);
            Console.WriteLine(requestInformation.HttpStatusMessage);
            Console.WriteLine(requestInformation.ExtendedErrorInformation.ErrorCode);
            Console.WriteLine(requestInformation.ExtendedErrorInformation.ErrorMessage);
        }
    }

In this case, I am trying to acquire a lease on a blob but I am specifying 10 seconds as lease duration which is an invalid input. This will result in 400 status code from Azure Storage. When I execute the code, I get following information back:

HTTP Status Code: 400
HTTP Status Message: The value for one of the HTTP headers is not in the correct format.
Storage Error Code: InvalidHeaderValue
Storage Error Message: The value for one of the HTTP headers is not in the correct format.
RequestId:04969aab-0001-001c-5965-6df5fe000000
Time:2017-01-13T06:23:25.4667820Z