public function getToolSessionDataFromRequest(RequestInterface $request)
	{
		// get params via post vars
		$toolSessionId    = $request->request('sessionnum');
		$toolSessionToken = $request->request('sessiontoken');

		// use headers as backup method to post vars
		if (!$toolSessionId && !$toolSessionToken)
		{
			$toolSessionId    = $request->headers('sessionnum');
			$toolSessionToken = $request->headers('sessiontoken');
		}

		// return id & token
		return compact('toolSessionId', 'toolSessionToken');
	}