GatewayConnection Error : 1 ,connect 0.0.0.0:28720 fail after 0.0002 seconds

gateway 和businessworker分开部署，其中gateway和register在同一台服务器，
gateway 配置如下：
$gateway->count = 8;
$gateway->lanIp = '0.0.0.0';
$gateway->startPort = 28715;
// 服务注册地址（阿里云公网ip）
$gateway->registerAddress = '47.104.100.155:1236';

businessworker 配置如下：
$worker->count = 20;
// 服务注册地址
$worker->registerAddress = '47.104.100.155:1236';

然后启动businessworker服务，报错
GatewayConnection Error : 1 ,connect 0.0.0.0:28719 fail after 0.0002 seconds
GatewayConnection Error : 1 ,connect 0.0.0.0:28720 fail after 0.0002 seconds
GatewayConnection Error : 1 ,connect 0.0.0.0:28721 fail after 0.0002 seconds
GatewayConnection Error : 1 ,connect 0.0.0.0:28716 fail after 0.0001 seconds
GatewayConnection Error : 1 ,connect 0.0.0.0:28715 fail after 0.0003 seconds
GatewayConnection Error : 1 ,connect 0.0.0.0:28717 fail after 0.0002 seconds
GatewayConnection Error : 1 ,connect 0.0.0.0:28722 fail after 0.0002 seconds
GatewayConnection Error : 1 ,connect 0.0.0.0:28718 fail after 0.0002 seconds
GatewayConnection Error : 1 ,connect 0.0.0.0:28719 fail after 0.0002 seconds
GatewayConnection Error : 1 ,connect 0.0.0.0:28720 fail after 0.0002 seconds
GatewayConnection Error : 1 ,connect 0.0.0.0:28721 fail after 0.0001 seconds
GatewayConnection Error : 1 ,connect 0.0.0.0:28716 fail after 0.0001 seconds
GatewayConnection Error : 1 ,connect 0.0.0.0:28715 fail after 0.0003 seconds
GatewayConnection Error : 1 ,connect 0.0.0.0:28717 fail after 0.0002 seconds

防火墙没开，阿里云安全组已开放端口28715－28722