NSURLConnection connection: didReceiveData: is not called after redirect - objective-c

Question

I am starting a request which gives me back HTML with a redirection inside. Why is the didReceiveData function not called a second time? I am trying to download a JSON File. (Using iOS6)
- (void) testdownload{
NSURL *url = [NSURL URLWithString:#"https://***];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[connection start];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)d{
NSString *tmpdata = [[NSString alloc] initWithData:d encoding:NSUTF8StringEncoding];
NSLog(#"data: %#", tmpdata);
}
When i use a UIWebView the redirection will be handled and the JSON file will be shown. Playing with this function didn't work:
- (NSURLRequest *)connection:(NSURLConnection *)connection willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)redirectResponse{
return request;
}

Answer 1

Try using this code instead:
- (NSURLRequest *)connection: (NSURLConnection *)inConnection
willSendRequest: (NSURLRequest *)inRequest
redirectResponse: (NSURLResponse *)inRedirectResponse;
{
if (inRedirectResponse) {
NSMutableURLRequest *r = [[request mutableCopy] autorelease]; // original request
[r setURL: [inRequest URL]];
return r;
} else {
return inRequest;
}
}
Learn more on this SO question

Answer 2

I used this now instead (but not realy nice):
- (IBAction)redirectTest:(id)sender {
NSURL *url = [NSURL URLWithString:#"http://billstclair.com/html-redirect.html"];
_request = [NSURLRequest requestWithURL:url];
UIWebView *webview = [[UIWebView alloc] initWithFrame:CGRectNull];
webview.delegate = self;
[webview loadRequest:_request];
[self.view addSubview:webview];
}
- (void)webViewDidFinishLoad:(UIWebView *)webView{
NSString *content = [webView stringByEvaluatingJavaScriptFromString:#"document.getElementsByTagName('html')[0].innerHTML"];
NSLog(#"content: %#",content);
}