use default checkorigin for upgrading to ws

server/api/k8s_handler.go

@@ -125,9 +125,6 @@ func (app *App) HandleGetPodLogs(w http.ResponseWriter, r *http.Request) {
 		agent, err = kubernetes.GetAgentOutOfClusterConfig(form.OutOfClusterConfig)
 	}
 
-	// allow all hosts for now. TODO: Implement CORS
-	upgrader.CheckOrigin = func(r *http.Request) bool { return true }
-
 	// upgrade to websocket.
 	conn, err := upgrader.Upgrade(w, r, nil)