Error downloading from S3 bucket on IOS. - ios

Question

I'm having a hard time trying to Download a specific file I've uploaded in my S3 Bucket.
I created a bucket called "Photos" and uploaded the file named "test.png"
After setting my CredentialProvider in my AppDelegate I tried to make a download of that file with the following code:
let transferManager = AWSS3TransferManager.defaultS3TransferManager()
let downloadingFilePath = NSTemporaryDirectory().stringByAppendingString("test.png")
let downloadingFileUrl = NSURL(fileURLWithPath: downloadingFilePath)
let downloadRequest = AWSS3TransferManagerDownloadRequest()
downloadRequest.bucket = "photos"
downloadRequest.key = "test.png"
downloadRequest.downloadingFileURL = downloadingFileUrl
transferManager.download(downloadRequest).continueWithExecutor(AWSExecutor.mainThreadExecutor(), withBlock: { (AWSTask) -> AnyObject! in
//Handle errors
if AWSTask.error != nil
{
print("Error downloading: \(AWSTask.error)")
// Retrive information important for later downloading
}
else
{
print("Download succesful..")
var uploadResult: AnyObject! = AWSTask.result
print("Upload result: \(uploadResult)")
let downloadOutput = AWSTask.result as! AWSS3TransferManagerDownloadOutput
}
return nil
})
But it keeps giving me the error: "The bucket you are attempting to access must be addressed using the specified endpoint. Please send all future requests to this endpoint"
I tried to change my downloaderRequest.bucket to the endpoint I found in my bucket properties . downloaderRequest.bucket = "photos.s3-website-sa-east-1.amazonaws.com"
But now it says "The specified bucket does not exist, Code=NoSuchBucket"
Any ideas of what Ive be doing wrong? thanks.

Answer 1

I finally figure it out.
So the problem here is that I created my bucket in a South American region and Amazon couldn't find it.
Even thought when I click in my Amazon region it tell me that "S3 does not require region selection." You need to create it in the "US Standard".

Answer 2

Before downloading, please set all required information related to access AWS service, Please apply below code first in your app delegate,
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// Override point for customization after application launch.
let credentialsProvider = AWSStaticCredentialsProvider(accessKey: YOUR_AWS_ACCESS_KEY, secretKey: YOUR_AWS_SECRET_KEY)
let defaultServiceConfiguration = AWSServiceConfiguration(region: AWSRegionType.SAEast1, credentialsProvider: credentialsProvider) //Your region endpoint
AWSServiceManager.defaultServiceManager().defaultServiceConfiguration = defaultServiceConfiguration
AWSLogger.defaultLogger().logLevel = .Verbose
return true
}
NOTE: Please do care about bucket name spell with case sensitivity.
func downloadFile()
{
let transferManager = AWSS3TransferManager.defaultS3TransferManager()
let downloadingFilePath = NSTemporaryDirectory().stringByAppendingString("test.png")
let downloadingFileURL = NSURL(fileURLWithPath: downloadingFilePath as String )
let downloadReadRequest : AWSS3TransferManagerDownloadRequest = AWSS3TransferManagerDownloadRequest()
downloadReadRequest.bucket = "photos"
downloadReadRequest.key = "test.png"
downloadReadRequest.downloadingFileURL = downloadingFileURL
let task = transferManager.download(downloadReadRequest)
task.continueWithBlock { (task) -> AnyObject? in
if task.error != nil
{
// Success
}
else
{
// Error
}
return nil
}
}

Answer 3

this problem occur because of region mismatch of s3 bucket and region we use while configuring s3
here is the code :
let credentialsProvider = AWSCognitoCredentialsProvider(regionType: cognitoRegion,
identityPoolId: cognitoIdentityPoolId,
identityProviderManager: customIdentityProvider)
so, here region type must be same your bucket region type. Ex.
if this is your bucket then , your regiontype in code must be : AWSRegionType.APSouth1