We assume what you wanted to do is try to get status of all items through Recording server using MessageCommunication.
But this way does not work. Because MessageCommunication is nothing related to Recording server, so you cannot get status of the items in that way.
However there is a sample called Status viewer sample. This sample shows how to dynamically show status on items such as server, camera, event etc. This might be helpful.
Yes, I am an example of this, but when the event server is enabled in cluster mode, this method is not available.the error info is default port 22333。How should I handle this?