- new_localhost(id: Pubkey): Create a NodeInfo structure with a PubKey
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- next_port(addr: &SocketAddr, nxt: u16): Modify addr's port by adding with nxt
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- new_with_pubkey_socketaddr(pubkey: Pubkey, bind_addr: &SocketAddr): Create a NodeInfo structure with pubkey and socketaddr
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- new_with_socketaddr(bind_addr: &SocketAddr): Create a NodeInfo structure with SocketAddr
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- new_entry_point(gossip_addr: &SocketAddr): Create a NodeInfo structure with passed in parameter gossip_addr and a "0.0.0.0:0" SocketAddr

- new_localhost(): Create a Node structure with a new pubkey
- 
- new_localhost_with_pubkey(pubkey: Pubkey): Create a Node structure with passed in parameter pubkey
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- new_with_external_ip(pubkey: Pubkey, ncp: &SocketAddr): Create a Node structure with passed in parameters pubkey && ncp

- new(node_info: NodeInfo): Create a Crdt structure with a NodeInfo instance
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- my_data(&self): Return a NodeInfo instance by crdt.id
-  
- leader_data(&self): Return a leader NodeInfo
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-node_info_trace(&self) -> String : format return node info
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-set_leader(&mut self, key: Pubkey): update the specified leader node
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-get_scheduled_leader(&self, entry_height: u64) -> Option<Pubkey>: Return the leader id
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-set_leader_rotation_interval(&mut self, leader_rotation_interval: u64): Set leader rotation interval
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-get_leader_rotation_interval(&self) -> u64: Get leader rotation interval
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-set_scheduled_leader(&mut self, entry_height: u64, new_leader_id: Pubkey) -> () : Insert new leader id in to the scheduled_leaders map
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-get_valid_peers(&self) -> Vec<NodeInfo> : Get valid peers from table except local node
-
-get_external_liveness_entry(&self, key: &Pubkey) -> Option<&HashMap<Pubkey, u64>>: 
-
-insert_vote(&mut self, pubkey: &Pubkey, v: &Vote, last_id: Hash): update node by given pubkey and insert to the table
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-insert_votes(&mut self, votes: &[(Pubkey, Vote, Hash)]): Calling insert_vote
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- insert(&mut self, v: &NodeInfo): Insert a Node to the table
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-update_liveness(&mut self, id: Pubkey): update node with current time in liveness table by given pubkey
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-purge(&mut self, now: u64): Purge the old validators
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-compute_broadcast_table(&self) -> Vec<NodeInfo>: compute broadcast table
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-broadcast(): broadcast messages from the leader to layer 1 nodes
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- retransmit(obj: &Arc<RwLock<Self>>, blob: &SharedBlob, s: &UdpSocket) -> Result<()>: retransmit messages from the leader to layer 1 nodes
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-convergence(&self) -> u64 : Return the max number of nodes that we could be converged to
-
-get_updates_since(&self, v: u64) -> (Pubkey, u64, Vec<NodeInfo>): 
-
-valid_last_ids(&self) -> Vec<Hash>： Return the nodes's last_id whose tpu addr and tvu add is valid
- broadcast(): broadcast messages from the leader to layer 1 nodes
- 
-window_index_request(&self, ix: u64) -> Result<(SocketAddr, Vec<u8>)>: find valid peers and send RequestWindowIndex
- 
-gossip_request(&self) -> Result<(SocketAddr, Protocol)>: Create a random gossip request
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-new_vote(&mut self, last_id: Hash) -> Result<(Vote, SocketAddr)>: Create new vote and insert in to table
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-run_gossip(obj: &Arc<RwLock<Self>>, blob_sender: &BlobSender) -> Result<()>: At random pick a node and try to get updated changes from them
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-top_leader(&self) -> Option<Pubkey>: Return the last node from the table sorted by pubkey
- retransmit(): retransmit messages from the leader to layer 1 nodes
- 
-update_leader(&mut self): 
- 
-apply_updates(): Apply updates that we received from the identity `from`
run_window_request()
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- gossip(): randomly pick a node and ask them for updates asynchronously
-
-run_window_request():
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-handle_blob(): calling handle_protocol
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-handle_protocol(): Process request from the network
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- run_listen():Process messages from the network
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-listen(): calling run_listen()
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- is_valid_address(addr: &SocketAddr): Validate passed in parameter SocketAddr if valid
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-spy_node() -> (NodeInfo, UdpSocket)