AsyncTcpConnection连不上tcp的响应事件

use \Workerman\Worker;
use \Workerman\Connection\AsyncTcpConnection;
require_once './Workerman/Autoloader.php';
define('PING_TIMEOUT', 5);

$task = new Worker();
// 进程启动时异步建立一个到www.baidu.com连接对象，并发送数据获取数据
$task->onWorkerStart = function($task)
{
    $connection_to_baidu = new AsyncTcpConnection('ws://127.0.0.1:8080');
    $connection_to_baidu->onWorkerStart = function($connection_to_baidu) {
        echo "3333";
    };

    // 当连接建立成功时，发送http请求数据
    $connection_to_baidu->onConnect = function($connection_to_baidu)
    {
        $connection_to_baidu->lastTime = time();
        $connection_to_baidu->send("lcjn");//随便发点什么吧(触发)
        echo "connect success\n";
    };
    $connection_to_baidu->onMessage = function($connection_to_baidu, $http_buffer)
    {
        $connection_to_baidu->lastTime = time();
        echo $http_buffer;
    };
    $connection_to_baidu->onClose = function($connection_to_baidu)
    {
        echo "connection closed\n";
    };
    $connection_to_baidu->onError = function($connection_to_baidu, $code, $msg)
    {
        echo "Error code:$code msg:$msg\n";
    };
    $connection_to_baidu->connect();
};

// 运行worker
Worker::runAll();

比如现在没开8080端口
1 AsyncTcpConnection 连不上ws，应该在onError里面有响应事件啊，为什么什么都没收到
2 如果端口因为某些问题导致接收不到数据，应该怎么重新链接这个ws