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copied!<p>So you replaced this</p> <pre><code>- (void)doDownload { NSURL *url = [NSURL URLWithString:@"http://foobar.com"]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; connection = [[NSURLConnection alloc] initWithRequest:aURLRequest delegate:self]; receivedData = [[NSMutableData data] retain]; } - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [_receivedData appendData:data]; } - (void)connectionDidFinishLoading:(NSURLConnection *)connection { NSArray *array = [_receivedData objectFromJSONDataWithParseOptions:JKParseOptionLooseUnicode]; callbackBlock(array); } </code></pre> <p>with this - </p> <pre><code>- (void)doDownload { NSURL *url = [NSURL URLWithString:@"http://foobar.com"]; ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url]; dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); dispatch_async(queue, ^(void) { [request startSynchronous]; NSArray *array = [[request responseData] objectFromJSONDataWithParseOptions:JKParseOptionLooseUnicode]; // Callback on the main queue to update UI. dispatch_async(dispatch_get_main_queue(), ^(void) { callbackBlock(array); }); }); } </code></pre> <p>and <strong>10,000+ lines of code from ASIHTTPRequest</strong>.</p> <p>What has it got you?</p> <p>NSURLConnection is fully asynchronous, uses GCD, caches, automatic zip/unzip, etc, etc..</p> <p>For that reason, and going solely on the (possibly incomplete) information you provided, i'd say that it was a really awful piece of code.</p> <p>Of course, context is everything - and you may have a really, really, really good reason for reimplementing the already existing functionality of Library code provided by Apple.</p>

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