PHP Curl can not connect to 8081

i want build express site and need get search result,Now in browser i could visit http://115.238.55.94:8081/result.aspx?wen=4535,when i use PHP curl i can not get result,and appear couldn't connect to host.
blew is script,using another domain it could run.please give me some advice thanks
<?php
$curl = curl_init();
curl_setopt($curl, CURLOPT_PORT, 8081);
curl_setopt($curl, CURLOPT_URL, 'http://115.238.55.94:8081/result.aspx?wen=4535');
curl_setopt($curl, CURLOPT_HEADER, 1);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_TIMEOUT, 15);
$data = curl_exec($curl);
var_dump($data);
var_dump(curl_error($curl));
curl_close($curl);
?>

 

This script is running perfect. Check if you have curl enabled.

 

only add a port i can not use this script
using domain(www.everstarlighting.com) it could runing