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Tao Guo 7dc772c96d fix(http): preserve manual Content-Length headers for HEAD requests per RFC 7230
Implements RFC 7230 Section 3.3.2 which allows servers to send Content-Length
headers in HEAD responses. This enables support for APIs like AWS S3 HeadObject
that require Content-Length headers even with empty response bodies.

Previously, manually set Content-Length headers on empty body responses were
being overridden by automatic "content-length: 0" headers. Now the encoder
checks for existing Content-Length headers before adding automatic ones.
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.github build(deps): bump taiki-e/install-action from 2.56.19 to 2.57.5 (#3712) 2025-08-05 22:02:35 +00:00
actix-files chore: narrow tokio dep to account for RUSTSEC-2025-0023 2025-05-10 06:09:51 +01:00
actix-http fix(http): preserve manual Content-Length headers for HEAD requests per RFC 7230 2025-08-09 13:04:20 -07:00
actix-http-test Update socket2 to v0.6 (#3688) 2025-07-14 01:13:01 +00:00
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README.md

Actix Web

Actix Web is a powerful, pragmatic, and extremely fast web framework for Rust

crates.io Documentation MSRV MIT or Apache 2.0 licensed Dependency Status
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Features

  • Supports HTTP/1.x and HTTP/2
  • Streaming and pipelining
  • Powerful request routing with optional macros
  • Full Tokio compatibility
  • Keep-alive and slow requests handling
  • Client/server WebSockets support
  • Transparent content compression/decompression (br, gzip, deflate, zstd)
  • Multipart streams
  • Static assets
  • SSL support using OpenSSL or Rustls
  • Middlewares (Logger, Session, CORS, etc)
  • Integrates with the awc HTTP client
  • Runs on stable Rust 1.72+

Documentation

Example

Dependencies:

[dependencies]
actix-web = "4"

Code:

use actix_web::{get, web, App, HttpServer, Responder};

#[get("/hello/{name}")]
async fn greet(name: web::Path<String>) -> impl Responder {
    format!("Hello {name}!")
}

#[actix_web::main] // or #[tokio::main]
async fn main() -> std::io::Result<()> {
    HttpServer::new(|| {
        App::new().service(greet)
    })
    .bind(("127.0.0.1", 8080))?
    .run()
    .await
}

More Examples

You may consider checking out this directory for more examples.

Benchmarks

One of the fastest web frameworks available according to the TechEmpower Framework Benchmark.

License

This project is licensed under either of the following licenses, at your option:

Code of Conduct

Contribution to the actix/actix-web repo is organized under the terms of the Contributor Covenant. The Actix team promises to intervene to uphold that code of conduct.