iphone - didFailLoadWithError is called with UIWebView even though page later loads

Question

I have a UIViewController which is a UIWebViewDelegate and has a UIWebView inside of it. I am trying to load a particular URL

    NSURL *url = [NSURL URLWithString:urlAddress];
    NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
    [webView loadRequest:requestObj];
    [self.view addSubview:webView];
    [webView release];

But the didFailLoadWithErrordelegate method is almost instantly called, and the error object is:

Did fail load with error: Error Domain=NSURLErrorDomain Code=-999 "The operation couldn’t be completed. (NSURLErrorDomain error -999.)" UserInfo=0x1a66c0 {NSErrorFailingURLKey=www.somewebsite.com, NSErrorFailingURLStringKey=www.somewebsite.com}

However a short time after, you can see that the website loads just fine.

Why is the fail method being called? And how do I know when it has actually failed versus when the method was called regardless of if the website actually failed or not?

Answer 1

You can get this error when the page is instantly redirected via javascript or somehow else

You can avoid showing the error by answer from here: How do I fix NSURLErrorDomain error -999 in iPhone 3.0 OS

like

if ([error code] != NSURLErrorCancelled) { //show error alert, etc. }

but I don't know how to recognize where it was invoked.