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I have a question, I'm sending a photo and I'm using uploadTask(withStreamedRequest: request). Request sent correctly, but when duration of request is longer than 67-70 seconds, app automatically performs the same request second time (I see this in Charles Proxy). Regardless of whether the application is in background or in foreground situation is the same. I don't know why request executed second time. Anybody had the same situation?This is part of my code:APIClient class: NSObject { private let sessionConfig: URLSessionConfiguration = .background (withIdentifier: "background.mode") private lazy var urlSession: URLSession = { return URLSession (configuration: sessionConfig, delegate: self, delegateQueue: nil) } () override init () { super.init () sessionConfig.timeoutIntervalForRequest = 120.0 sessionConfig.timeoutIntervalForResource = 120.0 } func execute (with request: URLRequest) { let task: URLSessionUploadTask task = urlSession.uploadTask (withStreamedRequest: request) task.resume () ... } }