* Notifies a listener that a message has been received. This method is only
* called if {@link FcpConnection#handleMessage(FcpMessage)} does not
* recognize the message. Should that ever happen, please file a bug report!
* Notifies a listener that a message has been received. This method is only
* called if {@link FcpConnection#handleMessage(FcpMessage)} does not
* recognize the message. Should that ever happen, please file a bug report!