#import "AFNetworking.h"
#import "CDLJSONPResponseSerializer.h"

NSString     *urlString  = @"http://derp.example/";
NSString     *callback   = @"foo";
NSDictionary *parameters = @{@"callback": callback};
NSURLRequest *request    =
  [[AFHTTPRequestSerializer serializer] requestWithMethod:@"GET"
                                                URLString:urlString
                                               parameters:parameters];
AFHTTPRequestOperation *op =
  [[AFHTTPRequestOperation alloc] initWithRequest:request];
op.responseSerializer =
  [CDLJSONPResponseSerializer serializerWithCallback:callback];
[op setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation,
                                    id responseObject) {
  NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
  NSLog(@"Error: %@", error);
}];
[[NSOperationQueue mainQueue] addOperation:op];