mirror of
https://github.com/actix/actix-website
synced 2024-11-28 02:22:57 +01:00
33 lines
1.4 KiB
Markdown
33 lines
1.4 KiB
Markdown
---
|
|
title: HTTP/2
|
|
menu: docs_protocols
|
|
weight: 250
|
|
---
|
|
|
|
Actix Web will prefer HTTP/2 connections if the client signals support for it via [TLS ALPN][tlsalpn].
|
|
|
|
# Negotiation
|
|
|
|
<!-- TODO: use rustls example -->
|
|
|
|
When either of the `rustls` or `openssl` features are enabled, `HttpServer` provides the [bind_rustls][bindrustls] method and [bind_openssl][bindopenssl] methods, respectively.
|
|
|
|
```toml
|
|
[dependencies]
|
|
actix-web = { version = "{{< actix-version "actix-web" >}}", features = ["openssl"] }
|
|
openssl = { version = "0.10", features = ["v110"] }
|
|
```
|
|
|
|
{{< include-example example="http2" file="main.rs" section="main" >}}
|
|
|
|
Upgrades to HTTP/2 described in [RFC §3.2][rfcsection32] are not supported. Starting HTTP/2 with prior knowledge is supported for both cleartext and TLS connections ([RFC §3.4][rfcsection34]) (when using the lower level `actix-http` service builders).
|
|
|
|
> Check out [examples/tls][examples] for a concrete example.
|
|
|
|
[rfcsection32]: https://http2.github.io/http2-spec/#rfc.section.3.2
|
|
[rfcsection34]: https://http2.github.io/http2-spec/#rfc.section.3.4
|
|
[bindrustls]: https://docs.rs/actix-web/4/actix_web/struct.HttpServer.html#method.bind_rustls
|
|
[bindopenssl]: https://docs.rs/actix-web/4/actix_web/struct.HttpServer.html#method.bind_openssl
|
|
[tlsalpn]: https://tools.ietf.org/html/rfc7301
|
|
[examples]: https://github.com/actix/examples/tree/master/https-tls/rustls
|