CDLJSONPResponseSerializer

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CDLJSONPResponseSerializer

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Parse JSONP responses with AFNetworking 2.0 and JavaScriptCore

// repository documentation

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# CDLJSONPResponseSerializer

[![Build Status](https://travis-ci.org/clundie/CDLJSONPResponseSerializer.png?branch=master)](https://travis-ci.org/clundie/CDLJSONPResponseSerializer)

This is a class to parse JSONP responses with AFNetworking. It uses Javascript
contexts provided by the JavaScriptCore framework.

## Usage

```objective-c
#import "AFNetworking.h"
#import "CDLJSONPResponseSerializer.h"
```

```objective-c
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];
```

## Requirements

- Xcode 5.0

- Target of iOS 7.0 or OS X 10.9

- [AFNetworking](https://github.com/AFNetworking/AFNetworking) 2.0

- ARC enabled

- JavaScriptCore framework

## Installation with [CocoaPods](http://cocoapods.org/)

Add this line to your [Podfile](http://docs.cocoapods.org/podfile.html):

```ruby
pod "CDLJSONPResponseSerializer", "~> 0.9"
```

## Running unit tests

### In Xcode

In the `Tests/` directory, run `pod install` to set up the workspace. Then you
can open the workspace and run tests in the `Tests` project.

### In a terminal

To run the tests from the command line, install
[xctool](https://github.com/facebook/xctool) with
[Homebrew](http://brew.sh/):

```bash
$ brew update
$ brew install xctool --HEAD
```

Then, run `rake test`.

## Security Issues

Because JSONP responses are executed in Javascript contexts, a malicious
response could cause very large memory or CPU usage. Your app could quit
or lock up. This is also true of plain JSON, but JSONP can do it with only a
small amount of data, for example:

```javascript
while(1); // The response will use 100% CPU and never complete.
```

## Credits

Created by [Chris Lundie](http://www.lundie.ca/).

## License

See the LICENSE file.

CDLJSONPResponseSerializer

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