iOS App - Set Timeout for UIWebView loading
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I have a simple iOS native app that loads a single UIWebView. I would like the webView to show an error message if the app doesn't COMPLETELY finish loading the initial page in the webView within 20 seconds. 

I load my URL for the webView within my `viewDidLoad` like this (simplified):

    [webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.example.com"] cachePolicy:NSURLCacheStorageAllowed timeoutInterval:20.0]];
The `timeoutInterval` within the code above does not actually "do" anything, as Apple has it set within the OS to not actually time out for 240 seconds.

I have my `webView didFailLoadWithError` actions set, but if the user HAS a network connection, this never gets called. The webView just continues to try loading with my networkActivityIndicator spinning.

Is there a way to set a timeout for the webView? 