services running in a node

Hello I was wondering if its possible to get a list of all services to which a node is connected, either as a client or as a server. Somethis similar to ros::this_node::getSubscribedTopics() http://docs.ros.org/electric/api/roscpp/html/namespaceros_1_1this__node.html#a81620bbd1e0a3196d694c38fbd4dea8a Also, is it possible to know which parameters a node has read. Thanks Miguel Oliveira