iPhone: NSHTTPCookie is not saved across app restarts

Question

In my iPhone app, I want to be able to reuse the same server-side session when my app restarts. A session on the server is identified by a cookie, which is sent on each requ

Answer 1

Swift 5 version

func storeCookies() {

    guard let serverBaseUrl = URL(string: Constants.baseURL) else {
        return
    }

    let cookiesStorage: HTTPCookieStorage = .shared

    var cookieDict: [String: Any] = [:]

    cookiesStorage.cookies(for: serverBaseUrl)?.forEach({ cookieDict[$0.name] = $0.properties })

    let userDefaults = UserDefaults.standard
    userDefaults.set(cookieDict, forKey: Constants.cookiesKey)
}

func restoreCookies() {

    let cookiesStorage: HTTPCookieStorage = .shared

    let userDefaults = UserDefaults.standard

    guard let cookieDictionary = userDefaults.dictionary(forKey: Constants.cookiesKey) else {
        return
    }

    let cookies = cookieDictionary
        .compactMap({ $0.value as? [HTTPCookiePropertyKey: Any] })
        .compactMap({ HTTPCookie(properties: $0) })

    cookiesStorage.setCookies(cookies, for: URL(string: Constants.baseURL), mainDocumentURL: nil)
}