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vendor/asm89/stack-cors/README.md

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+# Stack/Cors
+
+Library and middleware enabling cross-origin resource sharing for your
+http-{foundation,kernel} using application. It attempts to implement the
+[W3C Recommendation] for cross-origin resource sharing.
+
+[W3C Recommendation]: http://www.w3.org/TR/cors/
+
+Master [![Build Status](https://secure.travis-ci.org/asm89/stack-cors.png?branch=master)](http://travis-ci.org/asm89/stack-cors)
+
+## Installation
+
+Require `asm89/stack-cors` using composer.
+
+## Usage
+
+This package can be used as a library or as [stack middleware].
+
+[stack middleware]: http://stackphp.com/
+
+### Options
+
+| Option                 | Description                                                | Default value |
+|------------------------|------------------------------------------------------------|---------------|
+| allowedMethods         | Matches the request method.                                | `array()`     |
+| allowedOrigins         | Matches the request origin.                                | `array()`     |
+| allowedOriginsPatterns | Matches the request origin with `preg_match`.              | `array()`  |
+| allowedHeaders         | Sets the Access-Control-Allow-Headers response header.     | `array()`     |
+| exposedHeaders         | Sets the Access-Control-Expose-Headers response header.    | `false`       |
+| maxAge                 | Sets the Access-Control-Max-Age response header.           | `false`       |
+| supportsCredentials    | Sets the Access-Control-Allow-Credentials header.          | `false`       |
+
+The _allowedMethods_ and _allowedHeaders_ options are case-insensitive.
+
+You don't need to provide both _allowedOrigins_ and _allowedOriginsPatterns_. If one of the strings passed matches, it is considered a valid origin.
+
+If `array('*')` is provided to _allowedMethods_, _allowedOrigins_ or _allowedHeaders_ all methods / origins / headers are allowed.
+
+### Example: using the library
+
+```php
+<?php
+
+use Asm89\Stack\CorsService;
+
+$cors = new CorsService(array(
+    'allowedHeaders'         => array('x-allowed-header', 'x-other-allowed-header'),
+    'allowedMethods'         => array('DELETE', 'GET', 'POST', 'PUT'),
+    'allowedOrigins'         => array('localhost'),
+    'allowedOriginsPatterns' => array('/localhost:\d/'),
+    'exposedHeaders'         => false,
+    'maxAge'                 => false,
+    'supportsCredentials'    => false,
+));
+
+$cors->addActualRequestHeaders(Response $response, $origin);
+$cors->handlePreflightRequest(Request $request);
+$cors->isActualRequestAllowed(Request $request);
+$cors->isCorsRequest(Request $request);
+$cors->isPreflightRequest(Request $request);
+```
+
+## Example: using the stack middleware
+
+```php
+<?php
+
+use Asm89\Stack\Cors;
+
+$app = new Cors($app, array(
+    // you can use array('*') to allow any headers
+    'allowedHeaders'      => array('x-allowed-header', 'x-other-allowed-header'),
+    // you can use array('*') to allow any methods
+    'allowedMethods'      => array('DELETE', 'GET', 'POST', 'PUT'),
+    // you can use array('*') to allow requests from any origin
+    'allowedOrigins'      => array('localhost'),
+    // you can enter regexes that are matched to the origin request header
+    'allowedOriginsPatterns' => array('/localhost:\d/'),
+    'exposedHeaders'      => false,
+    'maxAge'              => false,
+    'supportsCredentials' => false,
+));
+```