A runtime for writing reliable, asynchronous, and slim applications with the Rust programming language. It is:
Fast: Tokio's zero-cost abstractions give you bare-metal performance.
Reliable: Tokio leverages Rust's ownership, type system, and concurrency model to reduce bugs and ensure thread safety.
Scalable: Tokio has a minimal footprint, and handles backpressure and cancellation naturally.
Website | Guides | API Docs | Roadmap | Chat
Tokio is an event-driven, non-blocking I/O platform for writing asynchronous applications with the Rust programming language. At a high level, it provides a few major components:
These components provide the runtime components necessary for building an asynchronous application.
A basic TCP echo server with Tokio:
use tokio::net::TcpListener;
use tokio::prelude::*;
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
let mut listener = TcpListener::bind("127.0.0.1:8080").await?;
loop {
let (mut socket, _) = listener.accept().await?;
tokio::spawn(async move {
let mut buf = [0; 1024];
// In a loop, read data from the socket and write the data back.
loop {
let n = match socket.read(&mut buf).await {
// socket closed
Ok(n) if n == 0 => return,
Ok(n) => n,
Err(e) => {
eprintln!("failed to read from socket; err = {:?}", e);
return;
}
};
// Write the data back
if let Err(e) = socket.write_all(&buf[0..n]).await {
eprintln!("failed to write to socket; err = {:?}", e);
return;
}
}
});
}
}
More examples can be found here. For a larger "real world" example, see the mini-redis repository.
To see a list of the available features flags that can be enabled, check our docs.
First, see if the answer to your question can be found in the Guides or the API documentation. If the answer is not there, there is an active community in the Tokio Discord server. We would be happy to try to answer your question. You can also ask your question on the discussions page.
Thanks for your help improving the project! We are so happy to have you! We have a contributing guide to help you get involved in the Tokio project.
In addition to the crates in this repository, the Tokio project also maintains several other libraries, including:
hyper
: A fast and correct HTTP/1.1 and HTTP/2 implementation for Rust.
tonic
: A gRPC over HTTP/2 implementation focused on high performance, interoperability, and flexibility.
warp
: A super-easy, composable, web server framework for warp speeds.
tower
: A library of modular and reusable components for building robust networking clients and servers.
tracing
(formerly tokio-trace
): A framework for application-level
tracing and async-aware diagnostics.
rdbc
: A Rust database connectivity library for MySQL, Postgres and SQLite.
mio
: A low-level, cross-platform abstraction over OS I/O APIs that powers
tokio
.
bytes
: Utilities for working with bytes, including efficient byte buffers.
loom
: A testing tool for concurrent Rust code
Tokio is built against the latest stable release. The minimum supported version is 1.39. The current Tokio version is not guaranteed to build on Rust versions earlier than the minimum supported version.
This project is licensed under the MIT license.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in Tokio by you, shall be licensed as MIT, without any additional terms or conditions.
此处可能存在不合适展示的内容,页面不予展示。您可通过相关编辑功能自查并修改。
如您确认内容无涉及 不当用语 / 纯广告导流 / 暴力 / 低俗色情 / 侵权 / 盗版 / 虚假 / 无价值内容或违法国家有关法律法规的内容,可点击提交进行申诉,我们将尽快为您处理。