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Processing a 401 response with sendAsynchronousRequest: queue: completeHandler:

I am making an asynchronous url request with a new iOS 5 method: sendAsynchronousRequest: queue: completeHandler :. This uses a block to handle the response, but the NSURLConnectionDelegate delegate methods are not called? I don’t see a way to set a delegate for the NSUrlConnection class in this instance?

[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {

   NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;

   NSLog(@"HTTP response code: %i", httpResponse.statusCode);

   if (error != nil) {
       NSLog(@"There was error with the synchronous request: %@", error.description);              
   }
}];

The reason I need delegate methods is because one of my calls gets a 401 response, which iOS handles differently - defer authentication to delegate methods. When the response 401 is returned - httpResponse.statusCode is just "0".

iOS 401 -? , , continueWithoutCredentialForAuthenticationChallenge: delegate, .

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NSURLConnection . sendAsynchronousRequest:queue:completionHandler: , .

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NSMutableURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:urlString]];

NSURLConnection *connection = [[NSURLConnection alloc] nitWithRequest:request delegate:self];

, .

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