How can I send messages to different server in one request ?

[idve]

Hi, My friend：
this is my question. I used this client in my project. there are two workman-server in my project .
I need to send the same message to those server.So, how can i do it?

[walkor]

Gateway::$registerAddress = 'ip1:port1';
Gateway::sendToClient(....);

Gateway::$registerAddress = 'ip2:port2';
Gateway::sendToClient(....);