workerman一个http端口和一个tcp端口的交互，onMessage函数中提示了一个端口的worker对象未定义？

$http_worker = new Worker("http://x.x.x.x:2345");
$tcp_worker = new Worker("tcp://x.x.x.x:2346");

$http_worker->onMessage = function($connection,$data)
{
 $connection->send($data);
 foreach($tcp_worker->connections as $con){
 $con->send("hello");
 }
};

Worker::runAll();