Insert Authorization Header field with kingfisher lib

With Kingfisher you need to make a request modifier (of type AnyModifier) and pass it as a parameter in the options part of the .kf.setImage method, and then use the trailing closure to actually set the image.

Example:

import Kingfisherlet modifier = AnyModifier { request in    var r = request    // replace "Access-Token" with the field name you need, it's just an example    r.setValue(<YOUR_TOKEN>, forHTTPHeaderField: "Access-Token")    return r}let url = URL(string: <YOUR_URL>)let iView = <YOUR_IMAGEVIEW>iView.kf.setImage(with: url, options: [.requestModifier(modifier)]) { (image, error, type, url) in    if error == nil && image != nil {        // here the downloaded image is cached, now you need to set it to the imageView        DispatchQueue.main.async {            iView.image = image        }    } else {        // handle the failure        print(error)    }}

Centralised and reliable way to pass custom headers to all the image requests.

No option required for all setImage(with:,option:) call

class TokenPlugin: ImageDownloadRequestModifier {    let token:String    init(token:String) {        self.token = token    }    func modified(for request: URLRequest) -> URLRequest? {        var request = request        request.addValue(token, forHTTPHeaderField: "token")        return request    }}

Config

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {    KingfisherManager.shared.defaultOptions = [.requestModifier(TokenPlugin(token:"abcdef123456"))]}