FIX: [STUDIO-2767] retry with remote tunnel when local failed

Change-Id: Id0172239d752508227729e81bee6c1a6ff4d3e9d

src/slic3r/GUI/DeviceManager.cpp

@@ -2325,6 +2325,13 @@ bool MachineObject::is_support_print_with_timelapse()
     return true;
 }
 
+bool MachineObject::is_camera_busy_off()
+{
+    if (printer_type == "C11")
+        return is_in_prepare() || is_in_upgrading();
+    return false;
+}
+
 int MachineObject::publish_json(std::string json_str, int qos)
 {
     if (is_lan_mode_printer()) {