i have custom module.  i can't call controller  in view of my module.
this url call 

    http://localhost/magento2-2.0.0-rc/index.php/namespace/moduelname/product/view/custom/

Code file **Custom.php** in ***Namespace/Namespace/Controller***

    namespace Namespace\Namespace\Controller;
    class Custom extends \Magento\Framework\App\Action\Action
    {
        /**
         * Index action
         *
         * @return $this
         */
        public function execute()
        {
            $resultRedirect = $this->resultRedirectFactory->create();
            return $resultRedirect->setPath('/');
        }
    }

 This file Custom.php in ***Namespace/Namespace/Controller/Product/View***

    <?php
    /**
     *
     * Copyright © 2015 Magento. All rights reserved.
     * See COPYING.txt for license details.
     */
    namespace Namespace\Modulename\Controller\Product\View;
    
    
    class Custom extends \Namespace\Modulename\Controller\Custom
    {
    	
         protected $resultForwardFactory;
       
        protected $resultPageFactory ;
         protected $_coreRegistry;
        /**
         * @param \Magento\Backend\App\Action\Context $context
         * @param \Magento\Framework\View\Result\PageFactory $resultPageFactory
         */
    	public function __construct(
    		\Magento\Framework\App\Action\Context $context, 
    		\Magento\Framework\View\Result\PageFactory $resultPageFactory,
    		\Magento\Framework\Controller\Result\ForwardFactory $resultForwardFactory,		
    		\Magento\Framework\Registry $registry
            	
        ) {
    		$this->resultForwardFactory = $resultForwardFactory;
            $this->resultPageFactory  = $resultPageFactory;
    		$this->_coreRegistry = $registry;
            parent::__construct($context);
        }	
      
        public function execute()
        {	
    		$data = $this->getRequest()->getPostValue();
    		print_r($data); die('xx');
        }
    }