Clear cookies for WKWebView?

Question

For an iOS 8 app I want to use a WKWebView for a custom authentication ViewController that I\'m building. However, I can\'t seem to figure out how to clear the

Answer 1

It seems like NSHTTPCookieStorage is now being used in iOS 8.2 to correctly clear cookies, as required. I had shipped an app which would run this code prior to opening a WKWebView based login:

NSHTTPCookieStorage *storage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (NSHTTPCookie *cookie in [storage cookies])
{
    [storage deleteCookie:cookie];
}

Where earlier than iOS 8.2 the website would auto-login using the saved cookies, it now correctly asks the user to re-login. All this happened without me shipping an update to the app. :)

Thanks for the heads-up @jackreichert !

Answer 2

The answer was provided to me on the internal Apple forums: use a mutable NSURLRequest, and set HTTPShouldHandleCookies to NO:

let req: NSMutableURLRequest = NSMutableURLRequest(URL:openURL)
req.HTTPShouldHandleCookies = false
webView.loadRequest(req)

No cookies sent to the web site, so you get the login screen (for testing) every time.