Can I customize keep-alive settings?

[dayvejones]

Summary

Hello!

I assume the axum(hyper) uses the following things:
https://docs.rs/hyper/latest/hyper/server/conn/http1/struct.Builder.html#method.keep_alive
https://docs.rs/socket2/latest/socket2/struct.Socket.html#method.set_tcp_keepalive

Are there any elegant ways to control the option keep_alive(enable/disable) setting globally when the app starts? Can I pass config for Hyper when use axum::serve(listener, app) ?

Are there any ways to control the option keep_alive setting in middleware only for some connections?

For example, actix:

https://actix.rs/docs/server/#keep-alive

use actix_web::{http::KeepAlive, HttpServer};
use std::time::Duration;

#[actix_web::main]
async fn main() -> std::io::Result<()> {
    // Set keep-alive to 75 seconds
    let _one = HttpServer::new(app).keep_alive(Duration::from_secs(75));

    // Use OS's keep-alive (usually quite long)
    let _two = HttpServer::new(app).keep_alive(KeepAlive::Os);

    // Disable keep-alive
    let _three = HttpServer::new(app).keep_alive(None);

    Ok(())
}

Thanks!

axum version

0.7.6

[jplatte]

There is no way with axum::serve right now (feel free to open a feature request), but if you follow the serve-with-hyper example, you can move the server::conn::auto::Builder to a new binding, and call .http1().keep_alive() on it before serve_connection_with_upgrades.

[dayvejones]

Thanks!

[IvanUkhov]

This is not something one can combine with Serve::with_graceful_shutdown, right?

[mladedav]

No, but there's graceful shutdown in hyper.