我正在执行后台上传到需要使用令牌进行授权的端点。该令牌作为HTTP标头包含在已创建/启动的各个上传任务中。
是否可以响应过期的令牌消息并阻止401s?大致来说,我希望执行的时间表是:
到目前为止,我一直无法获得这种行为-在第5步而不是发出质询/等。会话或任务委托可以处理的,我只得到401条响应。
设置配置/会话/任务:
let config = URLSessionConfiguration.background(withIdentifier: "background_upload_session")
session = URLSession(configuration: config, delegate: self, delegateQueue: nil)
var request = URLRequest(url: NetworkService.uploadUrl)
request.httpMethod = "POST"
...
request.setValue(authToken, forHTTPHeaderField: "Authorization-Token")
...
let task = session.uploadTask(with: request, fromFile: filePath)
task.taskDescription = filePath.lastPathComponent
task.resume()
委托方法:
public func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {
if error != nil {
DDLogError("NetworkService urlSession didCompleteWithError:\(String(describing: error))")
}
if let httpResponse = task.response as? HTTPURLResponse {
let statusMessage = httpResponse.statusCode == 201 ? "success" : "fail"
DDLogInfo("NetworkService didCompleteWithError status code: \(httpResponse.statusCode) - \(statusMessage)")
}
}
public func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
DDLogInfo("NetworkService urlSession task didReceive challenge")
completionHandler(.performDefaultHandling, nil)
}
didReceiveChallenge方法未调用-在这种情况下,这是我所期望的。假设它被调用,我不确定在这种情况下如何用新令牌响应。
有什么想法吗?