Aws-sdk-ios: Multiple file upload to s3 'IncompleteBody Error'

[yukitoto]

I use by swift 2.0.

When I tried to upload multiple image by dispatch async, process always fail with below error message.(correctly only first image uploaded)

 <Error><Code>IncompleteBody</Code><Message>You did not provide the number of bytes specified by the Content-Length HTTP header</Message><NumberBytesExpected>414435</NumberBytesExpected><NumberBytesProvided>407817</NumberBytesProvided></Error>

In this case, 414435 is content-length of first request, and 407817 is content-length of second request.

[rohandubal]

Hi Yukitoto,
Sorry that you are having trouble using the SDK. Do you have a code snipped or any steps by which we can reproduce this? Have you use AWSS3TransferUtility?

Thanks,
Rohan

[yukitoto]

@rohandubal Thanks for your reply.
This is my code snippet. Is there any problem?

        dispatch_async(dispatch_get_global_queue(QOS_CLASS_USER_INTERACTIVE, 0)) {
            guard let currentUser = User.sharedInstance() else {
                return
            }
            let imagePath         = NSProcessInfo.processInfo().globallyUniqueString.stringByAppendingString(".png")
            let imageData: NSData = UIImageJPEGRepresentation(image, 0.3)!
            let isSuccess         = imageData.writeToFile(imagePath, atomically: true)
            if isSuccess {
                let fileUrl: NSURL      = NSURL(fileURLWithPath: imagePath)
                let date                = NSDate()
                let unixTimeStamp       = date.timeIntervalSince1970
                let unixTimeStampString = String(format:"%f", unixTimeStamp)
                let uploadedFileName    = "\(currentUser.id)_\(unixTimeStampString).jpg"

                let myTransferManagerRequest = AWSS3TransferManagerUploadRequest()
                myTransferManagerRequest.bucket = "sample"
                myTransferManagerRequest.key = uploadedFileName
                myTransferManagerRequest.body = fileUrl
                myTransferManagerRequest.ACL = AWSS3ObjectCannedACL.PublicRead

                let myTransferManager: AWSS3TransferManager = AWSS3TransferManager.defaultS3TransferManager()
                myTransferManager.upload(myTransferManagerRequest).continueWithBlock({ (task) -> AnyObject! in
                    if task.error == nil && task.exception == nil {
                        let s3Path = "https://s3.amazonaws.com/sample/" + uploadedFileName
                        guard let imageURL = NSURL(string: s3Path) else {
                            return nil
                        }
                        print("#### Success!!")
                        callback(imageURL)
                    } else {
                        print("\n#### upload didn't seem to go through..\n")
                        let myError = task.error
                        print("error: \(myError)")
                        callback(nil)
                    }
                    return nil
                })
            }

[aymericio]

Why you don't use directly uploadData(data, bucket, key, contentType, expression, completionHandler) to upload your file?

Then, you can maybe move AWSS3TransferManager = AWSS3TransferManager.defaultS3TransferManager() outside the block and store the variable.

[yukitoto]

@plougy Thanks for reply!
I understand that the point is to use same AWSS3TransferManager.
However, because I am new to AWS, I counld not understand below part correct.

Why you don't use directly uploadData(data, bucket, key, contentType, expression, completionHandler) to upload your file?

Can you explain this in detail? Thanks.

[aymericio]

First, after reading your code again, I note than you use always the same path.

let imagePath = NSHomeDirectory().stringByAppendingPathComponent("Documents.jpeg")

Then you use writeToFile to save each file. I think that is better if you send directly your NSData and after in the callback, save the files.

[yukitoto]

@plougy Nice!! It works well.
The problem is imagePath. I used same imagePath.

Thanx for your grateful support.

[Pinturaj]

get the error

Message=You did not provide the number of bytes specified by the Content-Length HTTP header, in swift 3.1 when i upload images on s3 using loop

[AndreiBoariu]

@Pinturaj Please check this post
https://stackoverflow.com/a/50856785/800313
Today I fixed also on my side!

[Pinturaj]

Nothing in the post.