Struct DownstreamMetrics 

#[non_exhaustive]
pub struct DownstreamMetrics {

    pub requests_accepted: Counter,
    pub requests_accepted_tcp: Counter,
    pub requests_accepted_h1: Counter,
    pub requests_accepted_h2: Counter,
    pub requests_accepted_h1_connect: Counter,
    pub requests_accepted_h1_upgrade: Counter,
    pub requests_accepted_h2_connect: Counter,
    pub requests_accepted_h2_extended_connect: Counter,
    pub requests_denied: Counter,
    pub requests_completed: Counter,
    pub requests_failed: Counter,
    pub iroh_connections_opened: Counter,
    pub iroh_connections_closed_idle: Counter,
    pub iroh_connections_closed_error: Counter,
    pub bytes_to_upstream: Counter,
    pub bytes_from_upstream: Counter,
}

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

requests_accepted: Counter

Total number of downstream requests that began processing (HTTP or TCP).

requests_accepted_tcp: Counter

TCP-only requests (proxy is operating in ProxyMode::Tcp).

requests_accepted_h1: Counter

HTTP/1 requests that reached the downstream proxy.

requests_accepted_h2: Counter

HTTP/2 requests that reached the downstream proxy.

requests_accepted_h1_connect: Counter

HTTP/1 CONNECT requests, i.e. e2e tunnels.

requests_accepted_h1_upgrade: Counter

HTTP/1 upgrade requests (WebSocket, etc.) that were forwarded.

requests_accepted_h2_connect: Counter

HTTP/2 CONNECT requests (excluding extended CONNECT), i.e. e2e tunnels.

requests_accepted_h2_extended_connect: Counter

HTTP/2 extended CONNECT requests (RFC 8441), i.e. WebSocket over HTTP/2.

requests_denied: Counter

Requests rejected by the RequestHandler before opening an upstream tunnel.

requests_completed: Counter

Requests that successfully finished and were proxied upstream.

requests_failed: Counter

Requests that failed after being accepted (upstream or network error).

iroh_connections_opened: Counter

Number of QUIC connections opened toward upstream iroh nodes.

iroh_connections_closed_idle: Counter

Connections that closed cleanly from the local side (pool dropped conn after idle timeout)

iroh_connections_closed_error: Counter

Connections that terminated with an error (timeouts, transport errors, resets).

bytes_to_upstream: Counter

Bytes written to the upstream proxy (downstream ➜ upstream).

bytes_from_upstream: Counter

Bytes read from the upstream proxy (upstream ➜ downstream).

Implementations

impl DownstreamMetrics

pub fn active_requests(&self) -> u64

Returns the number of requests currently in flight.

Calculated as accepted - completed - failed using saturating arithmetic.

pub fn total_iroh_connections(&self) -> u64

Returns the total number of opened QUIC connections.

pub fn active_iroh_connections(&self) -> u64

Returns the estimated number of currently open QUIC connections.

Trait Implementations

impl Debug for DownstreamMetrics

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

Formats the value using the given formatter.

impl Default for DownstreamMetrics

fn default() -> Self

Returns the “default value” for a type.

impl Iterable for DownstreamMetrics

fn field_count(&self) -> usize

Returns the number of fields in the struct.

fn field_ref(&self, n: usize) -> Option<MetricItem<'_>>

Returns the field name and dyn reference to the field.

impl MetricsGroup for DownstreamMetrics

fn name(&self) -> &'static str

Returns the name of this metrics group.

fn iter(&self) -> FieldIter<'_>

Returns an iterator over all metric items with their values and helps.