一个进程中可以循环异步AsyncTcpConnection连接吗

$data = json_encode(array('a'=>1));
for ($i=0; $i < 3; $i++) { 
  $con = new AsyncTcpConnection('txt://127.0.0.1:123');
  $con->send($data);
  $con->onMessage = function($con, $data_con){
  $con->close();
 }
  $con->connect();
}