Struct Capabilities 

pub struct Capabilities {

    pub supports_relay: bool,
    pub supports_coordination: bool,
    pub observed_addrs: Vec<SocketAddr>,
    pub protocols: Vec<ProtocolId>,
    pub last_seen: SystemTime,
    pub rtt_ms_p50: u32,
    pub rtt_jitter_ms: u32,
    pub packet_loss: f32,
    pub nat_type_hint: Option<NatHint>,
    pub bandwidth_limit: Option<u64>,
    pub successful_connections: u32,
    pub failed_connections: u32,
    pub is_connected: bool,
}

Capabilities and quality metrics for a connected peer.

This struct captures both static capabilities (what the peer can do) and dynamic metrics (how well the peer is performing).

Fields

supports_relay: bool

Whether this peer can relay traffic for NAT traversal.

supports_coordination: bool

Whether this peer can coordinate NAT hole-punching.

observed_addrs: Vec<SocketAddr>

Observed external addresses for this peer.

protocols: Vec<ProtocolId>

Protocols this peer advertises support for.

last_seen: SystemTime

Last time we successfully communicated with this peer.

rtt_ms_p50: u32

Median round-trip time in milliseconds (p50).

rtt_jitter_ms: u32

Estimated RTT jitter in milliseconds.

packet_loss: f32

Packet loss rate (0.0 to 1.0).

nat_type_hint: Option<NatHint>

Inferred NAT type for connection strategy hints.

bandwidth_limit: Option<u64>

Peer’s advertised bandwidth limit (bytes/sec), if any.

successful_connections: u32

Number of successful connections to this peer.

failed_connections: u32

Number of failed connection attempts to this peer.

is_connected: bool

Whether this peer is currently connected.

Implementations

impl Capabilities

pub fn new_connected(addr: SocketAddr) -> Self

Create capabilities for a newly connected peer.

pub fn quality_score(&self) -> f32

Calculate a quality score for peer selection (0.0 to 1.0).

Higher scores indicate better peers for connection.

pub fn supports_protocol(&self, proto: &ProtocolId) -> bool

Check if this peer supports a specific protocol.

Trait Implementations

impl Clone for Capabilities

fn clone(&self) -> Capabilities

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Capabilities

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Capabilities

fn default() -> Self

Returns the “default value” for a type.