NSURLSession是否自动发送用户代理 [英] does NSURLSession send user-agent automatically

问题描述

当用户WatchKit 2.0，iOS 9.0时，NSURLSession是否自动发送用户代理? 有没有办法在WatchKit应用程序中对此进行验证?

Does NSURLSession send user-agent automatically when user WatchKit 2.0, iOS 9.0? Is there a way to verify this within the WatchKit app?

推荐答案

是的，将自动提供用户代理作为默认会话配置的一部分.

Yes, a user agent is automatically provided as part of the default session configuration.

默认的NSURLSession请求标头User-Agent字段包括watchOS应用程序扩展的捆绑包名称(CFBundleName)和内部版本号(CFBundleVersion):

The default NSURLSession request header User-Agent field includes the Bundle Name (CFBundleName) and the Build Number (CFBundleVersion) of your watchOS app extension:

$(CFBundleName)/$(CFBundleVersion) CFNetwork/808.3 Darwin/16.3.0

请注意，不包括您应用的版本号(CFBundleShortVersionString). (请参见技术说明TN2420:版本号和内部版本 了解更多信息.)

Notice that your app's Version Number (CFBundleShortVersionString) isn't included. (See Technical Note TN2420: Version Numbers and Build Numbers for more info.)

例如，对于内部版本号为1的产品"Foo"，您的用户代理应为:

For example, for product "Foo" with the Build Number 1, your user agent would be:

Foo%20WatchKit%20Extension/1 CFNetwork/808.3 Darwin/16.3.0

如何验证?

我认为您的应用程序中没有方法可以检查默认的用户代理字段，因为它是nil(除非您将其设置为自定义值).

How to Verify?

I don't think there's a way within your app to examine the default user agent field, as it's nil (unless you've set it to a custom value).

但是，您可以使用netcat来检查模拟器发送的请求.

But, you could use netcat to examine requests sent by the Simulator.

1. 在终端中运行nc -l 5678，以使netcat侦听端口5678

1. Run nc -l 5678 in Terminal to have netcat listen to requests sent to localhost on port 5678

在应用程序的Info.plist文件中，添加应用程序传输安全设置"字典，并将允许任意加载"键设置为YES

In your app's Info.plist file, add the App Transport Security Settings dictionary with the Allow Arbitrary Loads key set to YES

将以下代码添加到application(_:didFinishLaunchingWithOptions:)

let url = URL(string: "http://localhost:5678/")!
URLSession.shared.dataTask(with: url) { (data, response, error) in
    let body = String(data: data!, encoding: .utf8)!
    print("body: \(body)")
}.resume()
return true

在模拟器中运行您的应用，然后在终端中查看netcat的输出

Run your app in the Simulator and see what netcat outputs in Terminal

如果您的隐私无关紧要，则可以使用 user-agent.me 之类的服务进行测试在您的设备上.

If your privacy is of no concern, you could use a service like user-agent.me to test on your device.

1. 用user-agent.me

在设备上运行您的应用

检查Xcode的控制台输出

Examine Xcode's Console output

完成验证后，请记住撤消上述所有更改.

When you're done verifying, remember to undo all of the changes above.

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