Barryvdh\Cors\Stack\CorsService::isActualRequestAllowed PHP Method

    public function isActualRequestAllowed(Request $request)
    {
        return $this->checkOrigin($request);
    }

 /**
  * Handle an incoming request. Based on Asm89\Stack\Cors by asm89
  * @see https://github.com/asm89/stack-cors/blob/master/src/Asm89/Stack/Cors.php
  *
  * @param  \Illuminate\Http\Request  $request
  * @param  \Closure  $next
  * @return mixed
  */
 public function handle($request, Closure $next)
 {
     if (!$this->cors->isCorsRequest($request)) {
         return $next($request);
     }
     if (!$this->cors->isActualRequestAllowed($request)) {
         abort(403);
     }
     /** @var \Illuminate\Http\Response $response */
     $response = $next($request);
     return $this->cors->addActualRequestHeaders($response, $request);
 }