如何从WKWebView获取cookie？

Question

How do I get all cookies from a WKWebView instance?

Here are what I've tried so far:

• I tried using - [WKWebView evaluateJavaScript:completionHandler:] to evaluate document.cookie - unfortunately the result does not contain cookies that marked as HttpOnly .

• According to Introducing the Modern WebKit API (WWDC 2014 Session 206) , it should be possible to get an response object from an instance of WKNavigation . However, according to the class reference , WKNavigation does not contain any public method / property.

Answer 1

Since this question hasn't been answered after one year, I am posting my imperfect, but working solution:

You can have access to an NSHTTPURLResponse object in - webView:decidePolicyForNavigationResponse:decisionHandler: method defined on WKNavigationDelegate . You can later extract the cookies manually from the HTTP header:

- (void)webView:(WKWebView *)webView decidePolicyForNavigationResponse:(WKNavigationResponse *)navigationResponse decisionHandler:(void (^)(WKNavigationResponsePolicy))decisionHandler {
    NSHTTPURLResponse* response = navigationResponse.response;
    NSArray *cookies = [NSHTTPCookie cookiesWithResponseHeaderFields:[response allHeaderFields] forURL:[NSURL URLWithString:@""]];
    for (NSHTTPCookie *cookie in cookies) {
        // Do something with the cookie
    }

    decisionHandler(WKNavigationResponsePolicyAllow);
}

Please post your solution if you have a better one.