Struct StreamStats 

pub struct StreamStats {
    pub tx_seq: u64,
    pub rx_seq: u64,
    pub inbound_pending: u64,
    pub last_activity_ns: u64,
    pub active: bool,
    pub backpressure_events: u64,
    pub tx_credit_remaining: u32,
    pub tx_window: u32,
    pub credit_grants_received: u64,
    pub credit_grants_sent: u64,
}

Per-stream statistics snapshot. Cheap to produce (reads a handful of atomics) and safe to poll at arbitrary frequency.

Fields

tx_seq: u64

Next TX sequence number. Reflects “how many packets this stream has enqueued since open” because sequences start at 0.

rx_seq: u64

Highest RX sequence number observed so far.

inbound_pending: u64

Events currently buffered on the inbound queue (waiting for the caller to poll).

last_activity_ns: u64

Nanoseconds since Unix epoch of the last inbound or outbound activity. Used internally for idle eviction; surfaced for diagnostics.

active: bool

Whether the stream is active (not closed).

backpressure_events: u64

Cumulative count of send_on_stream calls that returned StreamError::Backpressure because the stream ran out of credit. Monotonically increasing; reset only by close + reopen.

tx_credit_remaining: u32

Bytes of send credit still available. For bounded streams (tx_window > 0), 0 means the next send of any size will be rejected as Backpressure; near tx_window means plenty of headroom. Receiver-driven StreamWindow grants replenish this counter.

tx_window: u32

Configured initial credit window in bytes. Informational — 0 disables backpressure entirely on this stream.

credit_grants_received: u64

Cumulative StreamWindow grants received from the peer since the stream opened (sender side).

credit_grants_sent: u64

Cumulative StreamWindow grants emitted to the peer since the stream opened (receiver side).

Trait Implementations

impl Clone for StreamStats

fn clone(&self) -> StreamStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StreamStats

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

Formats the value using the given formatter.

impl Copy for StreamStats