Authentication with Mac OS/iOS Cocoa

I'm currently trying to figure out manual authentication via the Mac OSX SDK. No matter what I do, the JSON response always returns an error of "WebAuthRequired" and "Please sign-in to continue". I've followed the instructions in the API introduction post but am getting nowhere. Here is what I have so far: //<character ID> is replaced with one of my own character IDs. //the vendor hash for gunsmith is outlined on a separate wiki NSURL *url = [NSURL URLWithString:@"http://www.bungie.net/platform/Destiny/1/MyAccount/Character/<characterID>/Vendor/570929315<gunsmith>/"]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; [request setHTTPMethod:@"GET"]; [request setValue:@"www.bungie.net" forHTTPHeaderField:@"Host"]; [request setValue:@"keep-alive" forHTTPHeaderField:@"Connection"]; [request setValue:@"<my api key>" forHTTPHeaderField:@"X-API-Key"]; [request setValue:@"bungledid=<bungledid cookie value>; bungled=<bungled cookie value>" forHTTPHeaderField:@"Cookie"]; //both cookies are obtained by inspecting cookies on a private browsing session [NSURLConnection connectionWithRequest:request delegate:self]; After retrieving the contents of the request it's always the error message. Please help!