code: private void updateServerInfo() {
  		ServerInfo serverInfo = loadBalance.getServerInfo();
  		if (serverInfo == null)
  			throw new RuntimeException("'serverInfo' is null !");
  		setServerHost(serverInfo.getHost());
  		setServerPort(serverInfo.getPort());
  		log.debug("Update server info . ({})", serverInfo.toString());
  	}
docs: 更新服务器信息
  
  @version 0.3.4