Alamofire 忽略 timeoutIntervalForRequest 和 timeoutIntervalForResource 参数

Alamofire ignores timeoutIntervalForRequest and timeoutIntervalForResource parameters

我目前正在尝试为我的 iOS 应用程序中的每个 Alamofire 远程调用减少 timeoutIntervalForRequesttimeoutIntervalForResource 的默认值 NSURLSessionConfiguration,因为我不这样做希望它分别等待 60 秒和 7 天。

这是我的代码:

Alamofire.Manager.sharedInstance.session.configuration.timeoutIntervalForRequest = 30
Alamofire.Manager.sharedInstance.session.configuration.timeoutIntervalForResource = 30

let parameters = [
    "foo": [1,2,3],
    "bar": [
        "baz": "qux"
    ]
]

Alamofire.Manager.sharedInstance.request(.POST, "someURL", parameters: parameters, encoding: .JSON) {
    (response) in

    print(response.timeline)
}

这是我的日志:

Timeline: { "Latency": 60.977 secs, "Request Duration": 60.977 secs, "Serialization Duration": 0.000 secs, "Total Duration": 60.977 secs }

如您所见,Request Duration 值超过 30 秒。

这是否取决于我使用 Alamofire.Manager.sharedInstance.request 而不是 Alamofire.request

我很确定这是因为您无法更改默认管理器的配置(或者至少我认为您不能,这可能是一个错误)。

尝试实例化一个新的并添加自定义的 NSURLSessionConfiguration。

例如:

var manager:Alamofire.Manager?

func initManager(timeoutInterval:Double) {
    let configuration = NSURLSessionConfiguration.defaultSessionConfiguration()

    configuration.timeoutIntervalForRequest = timeoutInterval
    configuration.timeoutIntervalForResource = timeoutInterval

    manager = Alamofire.Manager(configuration: configuration)
}

// then use manager!.request to do your request

我在官方 Alamofire GitHub 页面上打开了一个 issue,这是他们对此的看法:

Changing the values of the configuration in a session that's already active has no effect. According to Apple's documentation on NSURLSession: Changing mutable values within the configuration object has no effect on the current session, but you can create a new session with the modified configuration object.

I suggest you create your manager instance and customize its configuration, as per our documentation.