Is it possible to support concurrent service？i.e., multiple clients connected to the same server endpoint

Hi, thank you for open source such a great project. I'm trying to build a highly concurrent server based on this repo. In my opinion，a concurrent server should be able to handle multiple connections （or maintain multiple sockets）. It seems that the SocketServer in this impl can only handle one connection at a time as it only has one socket. So, is it impossible to support concurrent service using current version of SockertServer? Or do I misunderstand something that is actually doing what I want? Glad to see your comments, thanks in advance!