网络模块的：

• 启动
• 停止

P2P_Init

外部调用入口之一

// Initialize P2P subsystem

GetPeerID 种子节点

load_ban_list
load_peer_list

maintain_seed_node_connection

P2P_Server_v2 // start accepting connections
P2P_engine // start outgoing engine
syncroniser // start sync engine
clean_up_propagation // clean up propagation map

P2P_engine

maintain_outgoing_priority_connection

maintain_connection_to_peers
maintain_seed_node_connection

find_peer_to_connect
connect_with_endpoint

connect_with_endpoint

网络部分重要方法

支持 SSL/TLS
tcpc := conn.(*net.TCPConn)
conn = tls.Client(conn, &tls.Config{InsecureSkipVerify: true})
Handle_Connection

maintain_seed_node_connection

// this will maintain connection to 1 seed node randomly

maintain_connection_to_peers

// keep building connections to network, we are talking outgoing connections

P2P_Server_v2

启动本地 P2P 服务！

default_address
P2P_Port

generate_random_tls_cert
tls.Config

net.Listen

l.Accept

net.TCPConn

tcpc.SetKeepAlive
tcpc.SetKeepAlivePeriod
tcpc.SetLinger

tls.Server

Handle_Connection // 这是重点，开始从外部网络切换到内核

P2P_Shutdown

外部调用入口之一

// shutdown the p2p component