def get_connection_info
      info = []
      @connections.each do |connection|
        info.push([connection.id, connection.target_uri, 'i', connection.protocol, @topic_name])
      end
      info
    end
def get_connection_info
      info = []
      @connections.each do |connection|
        info.push([connection.id, connection.target_uri, 'i', connection.protocol, @topic_name])
      end
      info
    end
connection information fro slave API
 @return [Array] connection info