actix-web/actix-http
Varun Chawla 480ee0eef7
ws: add buffer reclamation to prevent memory bloat on long-lived connections
BytesMut retains its allocation even after being fully drained, which
means a single large WebSocket message permanently inflates memory for
the lifetime of the connection. This adds a configurable
`max_buffer_size` threshold (default 128 KiB) — when the read buffer
is empty and its capacity exceeds this limit, it gets replaced with a
fresh allocation.

New API: `Codec::max_buffer_size(size)` to configure the threshold.

Fixes #2075
2026-02-22 20:17:51 -08:00
..
benches perf: remove unnecessary allocation when writing http dates (#3261) 2024-02-07 03:47:30 +00:00
examples fix(*): replace rustls-pemfile (#3855) 2025-12-12 08:11:24 +09:00
src ws: add buffer reclamation to prevent memory bloat on long-lived connections 2026-02-22 20:17:51 -08:00
tests test(http): serial experiments to eliminate Windows test flakiness (#3945) 2026-02-22 10:28:10 +09:00
CHANGES.md chore(http): release v3.12.0 (#3939) 2026-02-18 19:10:18 +09:00
Cargo.toml test(http): serial experiments to eliminate Windows test flakiness (#3945) 2026-02-22 10:28:10 +09:00
LICENSE-APACHE prepare release beta 4 (#1659) 2020-09-09 22:14:11 +01:00
LICENSE-MIT prepare release beta 4 (#1659) 2020-09-09 22:14:11 +01:00
README.md chore(http): release v3.12.0 (#3939) 2026-02-18 19:10:18 +09:00

README.md

actix-http

HTTP types and services for the Actix ecosystem.

crates.io Documentation Version MIT or Apache 2.0 licensed
dependency status Download Chat on Discord

Examples

use std::{env, io};

use actix_http::{HttpService, Response};
use actix_server::Server;
use futures_util::future;
use http::header::HeaderValue;
use tracing::info;

#[actix_rt::main]
async fn main() -> io::Result<()> {
    env::set_var("RUST_LOG", "hello_world=info");
    env_logger::init();

    Server::build()
        .bind("hello-world", "127.0.0.1:8080", || {
            HttpService::build()
                .client_timeout(1000)
                .client_disconnect(1000)
                .finish(|_req| {
                    info!("{:?}", _req);
                    let mut res = Response::Ok();
                    res.header("x-head", HeaderValue::from_static("dummy value!"));
                    future::ok::<_, ()>(res.body("Hello world!"))
                })
                .tcp()
        })?
        .run()
        .await
}