Send server stat updates over the websocket

server/environment_docker.go

@@ -317,6 +317,9 @@ func (d *DockerEnvironment) EnableResourcePolling() error {
 				s.Resources.Network.RxBytes += nw.RxBytes
 				s.Resources.Network.TxBytes += nw.TxBytes
 			}
+
+			b, _ := json.Marshal(s.Resources)
+			s.Emit(StatsEvent, string(b))
 		}
 	}(d.Server)
 

server/events.go

@@ -9,6 +9,7 @@ type EventListenerFunction *func(string)
 const (
 	ConsoleOutputEvent = "console output"
 	StatusEvent = "status"
+	StatsEvent = "stats"
 )
 
 // Adds an event listener for the server instance.