Open Radar

 
Area:
WebKit

Summary:
When loading iframe requests the delegate method of UIWebView - - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType gets about:blank url

Steps to Reproduce:
On XCode 8 iOS project create a UIWebView.

Inject the following JavaScript code to UIWebView - 

var iframe = document.createElement('iframe');
iframe.setAttribute('src', "myapp://" + msg);
iframe.setAttribute('style', 'display:none');
document.body.appendChild(iframe);
iframe.parentNode.removeChild(iframe);
iframe = null;

implement the UIWebView delegate method 

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request

Once the java script code is injected this method will be called and the request's url will be about.blank.

Expected Results:
I expect the request.url to be the custom url in the iframe's src (In our case 'myapp://SOME_MESSAGE')


Actual Results:
request.url is about.blank

Version:
All iOS 10 devices

Notes:


Configuration:
All iOS 10 devices.