OneDrive resumable upload in iOS

Question

I'm having issue with resumable upload, using URLSession in iOS. Everything works, except the resumable upload. The session upload creation works, I've got my uploadUrl back, so I simply start an URLSessionUploadTask:

let url = URL(string: urlUploadString)!
var urlRequest = URLRequest(url: url)
urlRequest.httpMethod = "PUT"
urlRequest.setValue("bearer \(accessToken)", forHTTPHeaderField: "Authorization")
let task = urlsession.uploadTask(with: urlRequest, fromFile: localFile)
task.resume()

The transfer goes through, however, in the end, I receive a http code 400 with the response:

["error": {
    code = invalidRequest;
    message = "Invalid Content-Range header value";
}]

The thing, I can't set the Content-Range header per chunk, because iOS handles the upload, not me. And it doesn't seem to set Content-Range header automatically for each chunk sent.