iOS - Using cookies with WKWebView - ios

Question

I am trying to use cookies in iOS WKWebView like this:
import UIKit
import WebKit
class ViewWrapper: UIViewController, WKNavigationDelegate{
#IBOutlet weak var viewerWebKit: WKWebView!
var loginToken: String?
override func viewDidLoad() {
super.viewDidLoad()
let url = URL(string: "url")!
let newcookie = HTTPCookie(properties: [
.domain: "domain",
.path: "/",
.name: "cookie name",
.value: "cookie value",
.secure: "FALSE",
.expires: NSDate(timeIntervalSinceNow: 31556926)
])
var request = URLRequest(url: url)
request.httpShouldHandleCookies = true
viewerWebKit.configuration.websiteDataStore.httpCookieStore.setCookie(newcookie!, completionHandler: {
print("cookie setup done")
self.viewerWebKit.load(request)
})
let refresh = UIBarButtonItem(barButtonSystemItem: .refresh, target: webView, action: #selector(viewerWebKit.reload))
toolbarItems = [refresh]
navigationController?.isToolbarHidden = false
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func loadView() {
viewerWebKit = WKWebView()
viewerWebKit.navigationDelegate = self
view = viewerWebKit
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
title = webView.title
}
}
Domain, path, name and value are 100% correct. But when I am trying to get them and print then on my website, no cookies are set. Website printing of cookies works well, because I did an android app for this and it worked well there.
Do I need to do something more to accept or store the cookies?

Answer 1

Here's a self-contained example of setting a cookie which should be able to be read from a website loaded in the web view. The key points are that the domain must match the website's domain, the cookie expiry must be set to a future date, and this only worked for me with the secure flag set to false, not sure why.
Using the below example I was able to see the cookie in the browser's inspection window.
import UIKit
import WebKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let wv = WKWebView();
view = wv;
let cookie = HTTPCookie(properties: [
.domain: ".example.com",
.path: "",
.name: "name",
.value: "hello world",
.expires: Date(timeIntervalSince1970: 1639655995)
])!
wv.loadHTMLString("", baseURL: URL(string: "http://www.example.com")!);
wv.configuration.websiteDataStore.httpCookieStore.setCookie(cookie)
}
}

Answer 2

Set cookie this way, and pass secure flag "FALSE" and path with "/"
let newcookie = HTTPCookie(properties: [
.domain: "domain",
.path: "/",
.name: "cookie name",
.value: "cookie value",
.secure: "FALSE",
.expires: NSDate(timeIntervalSinceNow: 31556926)
])
Set cookie and wait for completion block to load your page.
self.configuration.websiteDataStore.httpCookieStore.setCookie(headerCookie, completionHandler: {
print("cookie setup done")
viewerWebKit.load(URLRequest(url: url))
})
After want to see cookie are updated or not just Add cookie change value observer like this way.
WKWebsiteDataStore.default().httpCookieStore.add(self)
func cookiesDidChange(in cookieStore: WKHTTPCookieStore) {
cookieStore.getAllCookies({ (cookies) in
cookies.forEach({ (cookie) in
print(cookie.name)
})
})
}
Now you can see your cookie in cookiesDidChange method.