AS3检查网络链接是否正常的代码

AS3检查网络链接是否正常，这段代码通过监控一个指定的url来判断链接是否正常

import air.net.URLMonitor;
import flash.net.URLRequest;
import flash.events.StatusEvent;
 
var monitor:URLMonitor = new URLMonitor(new URLRequest(‘http://www.75271.com’));
monitor.addEventListener(StatusEvent.STATUS, checkHTTP);
monitor.start();
 
function checkHTTP(e:StatusEvent) {
if (monitor.available) {
test_txt.text ="Internet is available";
} else {
test_txt.text ="No internet connection available";
}
}