protocol
范例
require_once __DIR__ . '/Workerman/Autoloader.php';
$worker->onConnect = function($connection)
$connection->protocol = 'Workerman\\Protocols\\Http';
};
$worker->onMessage = function($connection, $data)
// send 时会自动调用$connection->protocol::encode(),打包数据后再发送
$connection->send("hello");
};
// 运行worker