How to get cookie from a NSURLSession with Swift?

Question

I have a NSURLSession that calls dataTaskWithRequest in order to send a POST request in this way

func makeRequest(parameters: String, url:String){
    var po         


        

Answer 1

Swift 3/4, concise solution:

let cookieName = "MYCOOKIE"
if let cookie = HTTPCookieStorage.shared.cookies?.first(where: { $0.name == cookieName }) {
    debugPrint("\(cookieName): \(cookie.value)")
}

Answer 2

See the above answers but for Swift 3 you'll want something like this:

    var cookieProperties = [HTTPCookiePropertyKey:Any]()

    cookieProperties[HTTPCookiePropertyKey.name] = "foo"
    cookieProperties[HTTPCookiePropertyKey.value] = "bar"
    cookieProperties[HTTPCookiePropertyKey.path] = "baz"
    cookieProperties[HTTPCookiePropertyKey.domain] = ".example.com"

    let cookie = HTTPCookie(properties: cookieProperties)

Answer 3

I had the same problem: This gets, sets or delete cookies:

func showCookies() {

    let cookieStorage = NSHTTPCookieStorage.sharedHTTPCookieStorage()
    //println("policy: \(cookieStorage.cookieAcceptPolicy.rawValue)")

    let cookies = cookieStorage.cookies as! [NSHTTPCookie]
    println("Cookies.count: \(cookies.count)")
    for cookie in cookies {
        var cookieProperties = [String: AnyObject]()

        cookieProperties[NSHTTPCookieName] = cookie.name
        cookieProperties[NSHTTPCookieValue] = cookie.value
        cookieProperties[NSHTTPCookieDomain] = cookie.domain
        cookieProperties[NSHTTPCookiePath] = cookie.path
        cookieProperties[NSHTTPCookieVersion] = NSNumber(integer: cookie.version)
        cookieProperties[NSHTTPCookieExpires] = cookie.expiresDate
        cookieProperties[NSHTTPCookieSecure] = cookie.secure

        // Setting a Cookie
        if let newCookie = NSHTTPCookie(properties: cookieProperties) {
            // Made a copy of cookie (cookie can't be set)
            println("Newcookie: \(newCookie)")
            NSHTTPCookieStorage.sharedHTTPCookieStorage().setCookie(newCookie)
        }
        println("ORGcookie: \(cookie)")
    }
}

func deleteCookies() {

    let cookieStorage = NSHTTPCookieStorage.sharedHTTPCookieStorage()
    let cookies = cookieStorage.cookies as! [NSHTTPCookie]
    println("Cookies.count: \(cookies.count)")
    for cookie in cookies {
        println("name: \(cookie.name) value: \(cookie.value)")
        NSHTTPCookieStorage.sharedHTTPCookieStorage().deleteCookie(cookie)
    }

    //Create newCookie: You need all properties, because else newCookie will be nil (propertie are then invalid)
    var cookieProperties = [String: AnyObject]()
    cookieProperties[NSHTTPCookieName] = "locale"
    cookieProperties[NSHTTPCookieValue] = "nl_NL"
    cookieProperties[NSHTTPCookieDomain] = "www.digitaallogboek.nl"
    cookieProperties[NSHTTPCookiePath] = "/"
    cookieProperties[NSHTTPCookieVersion] = NSNumber(integer: 0)
    cookieProperties[NSHTTPCookieExpires] = NSDate().dateByAddingTimeInterval(31536000)
    var newCookie = NSHTTPCookie(properties: cookieProperties)
    println("\(newCookie)")
    NSHTTPCookieStorage.sharedHTTPCookieStorage().setCookie(newCookie!)
}

Answer 4

Try this code:

guard let realResponse = response as? HTTPURLResponse, realResponse.statusCode == 200 else {
    print("Not a 200 response")
    return
}

let fields = realResponse.allHeaderFields as? [String :String]

if let cookies = HTTPCookie.cookies(withResponseHeaderFields: fields!, for: response!.url!) {
    for cookie in cookies {
        print("name: \(cookie.name) value: \(cookie.value)")
    }
}

Answer 5

The Swift rendition might look something like:

let task = session.dataTask(with: request) { data, response, error in
    guard
        let url = response?.url,
        let httpResponse = response as? HTTPURLResponse,
        let fields = httpResponse.allHeaderFields as? [String: String]
    else { return }

    let cookies = HTTPCookie.cookies(withResponseHeaderFields: fields, for: url)
    HTTPCookieStorage.shared.setCookies(cookies, for: url, mainDocumentURL: nil)
    for cookie in cookies {
        var cookieProperties = [HTTPCookiePropertyKey: Any]()
        cookieProperties[.name] = cookie.name
        cookieProperties[.value] = cookie.value
        cookieProperties[.domain] = cookie.domain
        cookieProperties[.path] = cookie.path
        cookieProperties[.version] = cookie.version
        cookieProperties[.expires] = Date().addingTimeInterval(31536000)

        let newCookie = HTTPCookie(properties: cookieProperties)
        HTTPCookieStorage.shared.setCookie(newCookie!)

        print("name: \(cookie.name) value: \(cookie.value)")
    }
}
task.resume()