WKWebView Print Response Headers in Swift 2

Question

How can I see the response headers from a WKWebView loadRequest ?

eg

let url = NSURL(string: "http://www.anywebsite.com")!
let urlRequest = NSURLRequest(URL: url)
wkWebView.loadRequest(urlRequest)

then print the headers in the response.

score 3 · Answer 1 · answered Mar 27 '16 at 01:12

3

You have to assign wkWebView.navigationDelegate.

In the navigationDelegate's methods that provide a WKNavigationResponse, you can cast navigationResponse.response as a NSHTTPURLResponse to access navigationResponse.response.allHeaderFields.

answered Mar 27 '16 at 01:12

kfix

628
4
12

WKNavigationDelegate doesn't have any method with WKNavigationResponse – mtet88 Oct 28 '16 at 13:41
optional func webView(_ webView: WKWebView, decidePolicyFor navigationResponse: WKNavigationResponse, decisionHandler: @escaping (WKNavigationResponsePolicy) -> Void) https://developer.apple.com/reference/webkit/wknavigationdelegate/1455643-webview – kfix Nov 10 '16 at 16:49

score 0 · Answer 2 · answered Aug 22 '22 at 10:04

Swift 5

    // MARK: - WKNavigationDelegate

func webView(_ webView: WKWebView, decidePolicyFor navigationResponse: WKNavigationResponse) async -> WKNavigationResponsePolicy {
    let URLResponse = navigationResponse.response as? HTTPURLResponse
    URLResponse?.allHeaderFields.forEach({ key, value in
        print("decidePolicyFor key: ", key)
        print("decidePolicyFor value: ", value)
    })
    
    return .allow
}

WKWebView Print Response Headers in Swift 2

2 Answers2