Hi
I am seeing a problem with using the didCommitLoadForFrame delegate
with a WebView in an Objective C cocoa application.
Basically when loading certain pages I am getting two callbacks to
didCommitLoadForFrame, the first dataSource contains the correct URL
of the newly loaded page and the second contains about:blank. It
doesn't happen on loading all pages but where it does happen, it
happens consistently.
I am not seeing anything funny about the HTTP headers[1] for the pages
where I see two callbacks compared to those where I only see one.
I have knocked up a quick sample application[2] which demonstrates
this in a simple as possible project. In the sample, I have a
didCommitLoadForFrame delegate which looks like this:
- (void)webView: (WebView*)sender didCommitLoadForFrame: (WebFrame*)frame {
NSURL *url = [[[frame dataSource] request] URL];
NSLog(@"Committed '%@'", url);
}
If you look at the log after trying both URL's that the app hits, you see this:
Committed 'http://en.wikipedia.org/wiki/Ocean'
Committed 'http://en.wikipedia.org/wiki/Arctic_Ocean'
Committed 'about:blank'
I see this behaviour on about 50% of wikipedia pages but it is not
specific to wikipedia, it occurs across many sites across the web.
Cheers
Dave
[1] - http://www.pastie.org/private/wcpkpftlpll6xmiau0niq
[2] - http://files.shinydevelopment.com/WebViewCommitBug.zip
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