fn send_message(&self, target: &str, msg: &Message) -> bool
fn handle_message(&mut self, msg: &Message)
fn get_nghbr_sample(&self, a: &HashMap<String, DateTime<Utc>>) -> Vec<String>
fn comm_recv_gossip(&mut self, payload: &Vec<String>)
fn update_neighbors(&mut self)
fn delinquent_node_check(&mut self)