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				README.md
			
		
		
			
			
		
	
	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.
Installation
Require asm89/stack-cors using composer.
Usage
This package can be used as a library or as stack middleware.
Options
| Option | Description | Default value | 
|---|---|---|
| allowedMethods | Matches the request method. | [] | 
| allowedOrigins | Matches the request origin. | [] | 
| allowedOriginsPatterns | Matches the request origin with preg_match. | [] | 
| allowedHeaders | Sets the Access-Control-Allow-Headers response header. | [] | 
| 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 ['*'] is provided to allowedMethods, allowedOrigins or allowedHeaders all methods / origins / headers are allowed.
Example: using the library
<?php
use Asm89\Stack\CorsService;
$cors = new CorsService([
    'allowedHeaders'         => ['x-allowed-header', 'x-other-allowed-header'],
    'allowedMethods'         => ['DELETE', 'GET', 'POST', 'PUT'],
    'allowedOrigins'         => ['http://localhost'],
    'allowedOriginsPatterns' => ['/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
use Asm89\Stack\Cors;
$app = new Cors($app, [
    // you can use ['*'] to allow any headers
    'allowedHeaders'      => ['x-allowed-header', 'x-other-allowed-header'],
    // you can use ['*'] to allow any methods
    'allowedMethods'      => ['DELETE', 'GET', 'POST', 'PUT'],
    // you can use ['*'] to allow requests from any origin
    'allowedOrigins'      => ['localhost'],
    // you can enter regexes that are matched to the origin request header
    'allowedOriginsPatterns' => ['/localhost:\d/'],
    'exposedHeaders'      => false,
    'maxAge'              => false,
    'supportsCredentials' => false,
]);