关系：Server -> Peers -> Peer -> PeerInfo

Server

/// P2P server implementation, handling bootstrapping to find and connect to
/// peers, receiving connections from other peers and keep track of all of them.
pub struct Server {
    pub config: P2PConfig,
    capabilities: Capabilities,
    handshake: Arc<Handshake>,
    pub peers: Arc<Peers>,
    stop: Arc<AtomicBool>,
    pause: Arc<AtomicBool>,
}

P2PConfig

/// Configuration for the peer-to-peer server.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct P2PConfig {
    pub host: IpAddr,
    pub port: u16,

    pub peers_allow: Option<Vec<String>>,

    pub peers_deny: Option<Vec<String>>,

    pub ban_window: Option<i64>,

    pub peer_max_count: Option<u32>,

    pub peer_min_preferred_count: Option<u32>,
}