code: @Override
      public FilterAction handleClientRequest(User user, ISFSObject params) throws SFSException {
          try {
              handler.handleClientRequest(user, params);
          }
          catch(Exception e) { 
              return FilterAction.HALT; 
          }
          return FilterAction.CONTINUE;
      }
docs: /* (non-Javadoc)
  @see com.smartfoxserver.v2.controllers.filter.ISystemFilter#handleClientRequest(com.smartfoxserver.v2.entities.User, com.smartfoxserver.v2.entities.data.ISFSObject)