Awesome

Rust Timeouts

An unresponsive service can be worse than a down one. It can tie up your entire system if not handled properly. All network requests should have a timeout.

Here’s how to add timeouts for popular Rust crates. All have been tested. The default is no timeout, unless otherwise specified. Enjoy!

Also available for Ruby, Python, Node, and Go

Contents

Standard library

• TcpStream

Crates

• awc
• curl
• elasticsearch
• hyper
• postgres
• redis
• reqwest
• sqlx
• ureq

Standard Library

TcpStream

let mut stream = std::net::TcpStream::connect_timeout(&addr, Duration::from_secs(1))?;
stream.set_read_timeout(Some(Duration::from_secs(1)))?;
stream.set_write_timeout(Some(Duration::from_secs(1)))?;

Crates

awc

let client = awc::Client::builder()
    .timeout(Duration::from_secs(1))
    .finish();

curl

let mut easy = curl::easy::Easy::new();
easy.connect_timeout(Duration::from_secs(1))?;
easy.timeout(Duration::from_secs(1))?;

elasticsearch

let transport = elasticsearch::http::transport::TransportBuilder::new(conn_pool)
    .timeout(Duration::from_secs(1))
    .build()?;

hyper

tokio::time::timeout(Duration::from_secs(1), client.get(uri)).await?;

postgres

let client = postgres::Config::new()
    .connect_timeout(Duration::from_secs(1))
    .connect(postgres::NoTls)?;

redis

let mut con = client.get_connection_with_timeout(Duration::from_secs(1))?;
con.set_read_timeout(Some(Duration::from_secs(1)))?;
con.set_write_timeout(Some(Duration::from_secs(1)))?;

reqwest

let client = reqwest::Client::builder()
    .timeout(Duration::from_secs(1))
    .build()?;

or

let resp = client.get(url)
    .timeout(Duration::from_secs(1))
    .send()
    .await?;

sqlx

let pool = sqlx::postgres::PgPoolOptions::new()
    .acquire_timeout(Duration::from_secs(1))
    .connect(uri)
    .await?;

ureq

let agent = ureq::AgentBuilder::new()
    .timeout_connect(Duration::from_secs(1))
    .timeout_read(Duration::from_secs(1))
    .timeout_write(Duration::from_secs(1))
    .build();

Don’t see a library you use?

Let us know. Even better, create a pull request for it.

Running the Tests

git clone https://github.com/ankane/rust-timeouts.git
cd rust-timeouts

To run all tests, use:

cargo test

To run individual tests, use:

cargo test redis