clients is a member of
WebSocketController. It contains all the methods to interact with websocket connected clients.
emit an event to all connected clients
clients.emit("event name", data)
get current connected client, which can be used to emit an event to current client
clients.current.emit("event name", data)
except_me will return another clients object, which won't have caller client. It can be used to emit event to all connected clients except the caller.
clients.except_me.emit("event name", data)
groups can be used to group no of clients. Read more about groups.