AFHTTPClient*client=[[AFHTTPClientalloc]initWithBaseURL:[NSURLURLWithString:@"http://twitter.com"]];NSURL*url=[NSURLURLWithString:@"https://alpha-api.app.net/stream/0/posts/stream/global"];NSURLRequest*r=[NSURLRequestrequestWithURL:url];AFJSONRequestOperation*operation=[AFJSONRequestOperationJSO