PHP模拟登陆网站出现会话超时

<?php





        $url="http://60.219.165.24/loginAction.do";

        $ch = curl_init();

        curl_setopt($ch, CURLOPT_URL, $url);

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

	curl_setopt($ch, CURLOPT_HEADER, 0); 

	curl_setopt($ch, CURLOPT_POST, 1);

	$curlPost="postdata";

	curl_setopt($ch, CURLOPT_POSTFIELDS, $curlPost); 



        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);



         curl_setopt($ch, CURLOPT_UNRESTRICTED_AUTH, 1);



         $output = curl_exec($ch);

         curl_close($ch);

$home_url = 'http://60.219.165.24/gradeLnAllAction.do?type=ln&oper=fainfo&fajhh=2615';

	  header('Location: '.$home_url);





?>

传入了正确的登陆名称和密码之后却无法访问下一页面。提示“会话超时".

抓包如上图

------解决方案--------------------
还有，你保持会话状态了么？curl会自动帮你传递cookie？