gatewayworker连接之后立刻就断开了

...
$ws = new Worker('websocket://0.0.0.0:8181');
$ws->onConnect = function($connection)
{
    $connection->onWebSocketConnect = function($connection , $http_header)
    {
        // 可以在这里判断连接来源是否合法，不合法就关掉连接
        // $_SERVER标识来自哪个站点的页面发起的websocket连接
        if($_SERVER != 'http://chat.workerman.net')
        {
            $connection->close();
        }
    };
};