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feat(server): configurable TCP listen_backlog

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Add [server].listen_backlog (default 1024) for client-facing listen(2)
queue size; use the same value for metrics HTTP listeners. Hot reload
logs restart-required when this field changes.
This commit is contained in:
sintanial
2026-03-27 12:30:11 +03:00
parent a383efcb21
commit 96ae01078c
6 changed files with 24 additions and 4 deletions
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14
src/metrics.rs
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@@ -22,6 +22,7 @@ use crate::transport::{ListenOptions, create_listener};
pub async fn serve(
port: u16,
listen: Option<String>,
listen_backlog: u32,
stats: Arc<Stats>,
beobachten: Arc<BeobachtenStore>,
ip_tracker: Arc<UserIpTracker>,
@@ -40,7 +41,7 @@ pub async fn serve(
}
};
let is_ipv6 = addr.is_ipv6();
match bind_metrics_listener(addr, is_ipv6) {
match bind_metrics_listener(addr, is_ipv6, listen_backlog) {
Ok(listener) => {
info!("Metrics endpoint: http://{}/metrics and /beobachten", addr);
serve_listener(
@@ -60,7 +61,7 @@ pub async fn serve(
let mut listener_v6 = None;
let addr_v4 = SocketAddr::from(([0, 0, 0, 0], port));
match bind_metrics_listener(addr_v4, false) {
match bind_metrics_listener(addr_v4, false, listen_backlog) {
Ok(listener) => {
info!(
"Metrics endpoint: http://{}/metrics and /beobachten",
@@ -74,7 +75,7 @@ pub async fn serve(
}
let addr_v6 = SocketAddr::from(([0, 0, 0, 0, 0, 0, 0, 0], port));
match bind_metrics_listener(addr_v6, true) {
match bind_metrics_listener(addr_v6, true, listen_backlog) {
Ok(listener) => {
info!(
"Metrics endpoint: http://[::]:{}/metrics and /beobachten",
@@ -122,10 +123,15 @@ pub async fn serve(
}
}
fn bind_metrics_listener(addr: SocketAddr, ipv6_only: bool) -> std::io::Result<TcpListener> {
fn bind_metrics_listener(
addr: SocketAddr,
ipv6_only: bool,
listen_backlog: u32,
) -> std::io::Result<TcpListener> {
let options = ListenOptions {
reuse_port: false,
ipv6_only,
backlog: listen_backlog,
..Default::default()
};
let socket = create_listener(addr, &options)?;