Struct ConnectionStats 

pub struct ConnectionStats {
    pub bytes_sent: u64,
    pub bytes_received: u64,
    pub rtt: Duration,
    pub connected_duration: Duration,
    pub streams_opened: u64,
    pub packets_lost: u64,
}

Statistics for a connection.

Updated in real-time as the connection handles data. Use for:

• Monitoring connection health
• Detecting congestion (high RTT, packet loss)
• Debugging performance issues

Typical Values

Metric	Good	Concerning	Critical
RTT	<50ms	50-200ms	>500ms
Packet loss	<0.1%	0.1-1%	>5%

Example

let stats = conn.stats();
if stats.rtt > Duration::from_millis(200) {
    log::warn!("High latency: {:?}", stats.rtt);
}
if stats.packets_lost > stats.bytes_sent / 100 {
    log::warn!("Significant packet loss detected");
}

Fields

bytes_sent: u64

Total bytes sent on this connection (including retransmits).

bytes_received: u64

Total bytes received on this connection.

rtt: Duration

Current smoothed round-trip time estimate. Calculated using QUIC’s RTT estimation algorithm.

connected_duration: Duration

How long this connection has been established.

streams_opened: u64

Total number of streams opened (bidirectional + unidirectional).

packets_lost: u64

Estimated packets lost during transmission. High values indicate congestion or poor network conditions.

Trait Implementations

impl Clone for ConnectionStats

fn clone(&self) -> ConnectionStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConnectionStats

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

Formats the value using the given formatter.

impl Default for ConnectionStats

fn default() -> ConnectionStats

Returns the “default value” for a type.