ios – 重试URLSession dataTask的模式？

func getmessages() {

    let endpoint = "/apI/Outgoingmessages"

    let parameters: [String: Any] = [
        "limit" : 100,"sortOrder" : "ASC"
    ]

    guard let url = createURLWithComponents(endpoint: endpoint,parameters: parameters) else {
        print("Failed to create URL!")
        return
    }

    do {
        var request = try URLrequest(url: url,method: .get)

        let task = URLSession.shared.dataTask(with: request as URLrequest) { (data,response,error) in

            if let error = error {
                print("request Failed with error: \(error)")
                // TODO: retry Failed request
            } else if let data = data,let response = response as? httpURLResponse {                
                if response.statusCode == 200 {
                    // process data here
                } else {
                    // TODO: retry Failed request
                }
            }
        }

        task.resume()

    } catch {
        print("Failed to construct URL: \(error)")
    }
}

当然,此请求可能由于多种原因而失败(服务器无法访问,请求超时,服务器返回200以外的其他内容等).如果我的请求失败,我希望能够重试它,甚至可能在下一次尝试之前延迟.我在Apple的文档中没有看到关于这种情况的任何指导,但我发现了几个关于SO的相关讨论.不幸的是,这两个都是几年前和Objective-C,我从来没有与之合作过.是否有任何常见的模式或实现在Swift中做这样的事情？