Get HTTP Response header on UIWebView

Question

How can I get HTTP headers response from WebView? I\'ve found semi-solutions at Stackoverflow, but it\'s written on Objective-C and can\'t convert it to Swift (I\'ve tried w

Answer 1

Just using this in SWIFT 3.1 :

if let request = webView.request {
            if let resp = URLCache.shared.cachedResponse(for: request) {
                if let response = resp.response as? HTTPURLResponse {
                    print(response.allHeaderFields)
                }
            }
        }

Answer 2

Swift

Swift is more stringent ; you want to protect yourself against nil pointers and optionals:

• check that the webView actually has a request
• check that the request actually has a NSCachedURLResponse
• type-check the response against NSHTTPURLResponse

func webViewDidFinishLoad(webView: UIWebView) {
    if let request = webView.request {
        if let resp = NSURLCache.sharedURLCache().cachedResponseForRequest(request) {
            if let response = resp.response as? NSHTTPURLResponse {
                print(response.allHeaderFields)
            }
        }
    }
}