单用workerman，如何实现gateway的心跳？

<?php
require_once __DIR__ . '/Workerman/Autoloader.php';
use Workerman\Worker;
use Workerman\WebServer;
use Workerman\Lib\Timer;
define('PING_TIMEOUT', 5);

$worker = new Worker('tcp://0.0.0.0:12345');
$worker->onConnect = function($connection) {
        // 给链接对象临时赋值一个lastTime属性记录上次接收消息的时间
        $connection->lastTime = time();
};
$worker->onWorkerStart = function($worker) {
        // 每秒检查一次所有链接是否心跳超时
        Timer::add(1, function()use($worker) {
            $time_now = time();
            foreach($worker->connections as $connection) {
                if($time_now - $connection->lastTime > PING_TIMEOUT) {
                    $connection->close('ping timeout and close');
                }
            }
        });
};
$worker->onMessage = function($connection, $data) {
        // 记录本次客户端发来数据的时间
        $connection->lastTime = time();
        $connection->send($data);
};
Worker::runAll();

上面是定时检查所有链接心跳超时。也可以给每个链接设置定时器，检查心跳超时。

多谢老大！！！^_^

不客气