Firebase Storage Download Response Error - swift

Question

I have been able to successfully upload images to firebase storage but have been unable to successfully download the image.
I have attempted to download images in all three of the suggested ways on Firebase Storage Guides:
1) Download to NSData in memory
2) Download to an NSURL representing a file on device
3) Generate an NSURL representing the file online
An example is below of two different attempts:
func loadProfileImage() {
guard let currentUser = Auth.auth().currentUser else { return }
let profilePhotoFile = "ProfileImages/" + currentUser.uid
let reference = Storage.storage().reference(withPath: profilePhotoFile)
#1st Attempt downloading to memory:
reference.getData(maxSize: 1 * 1024 * 1024) { (data, error) in
if let error = error {
print("an error occurred: \(error)")
print("see data response: \(data)")
} else {
self.profileView.image = UIImage(data: data!)
}
}
#2nd Attempt with download url:
reference.downloadURL { (url, error) in
if let error = error {
print(error)
} else {
self.profileView.sd_setImage(with: url, placeholderImage:
#imageLiteral(resourceName: "placeHolderProfileView")) {
(image, error, type, reference2) in
print("reference location of image in the google
bucket: \(reference2)")
print("error retrieving image: \(String(describing:
error))")
print("type: \(type)")
print("image details: \(String(describing: image))")
}
}
}
}
Also tried using alamofire instead of SDWebImage to see if error code was same and it is the same see below:
Error Domain=FIRStorageErrorDomain Code=-13000 "An unknown error occurred, please check the server response." UserInfo={object=ProfileImages/6I2RhzFI3edYNph9J4WsaXXXX, ResponseErrorCode=100, bucket=bXXXX-production.appspot.com, NSLocalizedDescription=An unknown error occurred, please check the server response., ResponseErrorDomain=NSPOSIXErrorDomain, _kCFStreamErrorDomainKey=1, NSErrorPeerAddressKey={length = 28, capacity = 28, bytes = 0x1c1e01bb000000002607f8b040090813 ... 0000200a00000000}, _kCFStreamErrorCodeKey=100}
I have checked and rechecked the google storage bucket location and believe I have the reference location correct (using the same as the upload file path which works correctly).
Any help would be much appreciated

Answer 1

There you go :
func downloadImage(url : String,
completionHandler: #escaping (Bool?, UIImage?, String?) -> Void) -> Void
{
var success : Bool = false
var img : UIImage? = nil
var errorLog : String? = nil
let u = URL(string: url)
let task = URLSession.shared.dataTask(with: u!, completionHandler: { (data, response, error) in
if error != nil
{
errorLog = error?.localizedDescription
completionHandler(success, img, errorLog)
}
else
{
success = true
img = UIImage(data: data!)
completionHandler(usuccess, img, errorLog)
}
})
task.resume()
}
Get URL using :
imgReference.downloadURL { (url, error) in
guard let url = url else { return }
urlString = url.absoluteString
//do something with the urlString (such as download image)
}

Answer 2

Realized the error was in headers that were included when uploading the image:
I had originally listed the following with the upload, by commenting them out I was able to successfully download with SDWebImage and the suggestion from vbuzze.
let uploadMetadata = StorageMetadata()
uploadMetadata.contentType = "image/jpeg"
uploadMetadata.customMetadata = ["Profile Name" : currentUser.displayName] as? [String : String]