rquest

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An ergonomic all-in-one HTTP client for browser emulation with TLS, JA3/JA4, and HTTP/2 fingerprints.

Features

• Plain bodies, JSON, urlencoded, multipart
• Cookie Store
• Header Order
• Redirect Policy
• Rotating Proxies
• Certificate Store
• WebSocket Upgrade
• HTTPS via BoringSSL
• HTTP/2 over TLS Emulation

Example

This asynchronous example utilizes Tokio with optional features enabled, requiring the following configuration in Cargo.toml:

[dependencies]
tokio = { version = "1", features = ["full"] }
rquest = "5"
rquest-util = "2"

And then the code:

use rquest::Client;
use rquest_util::Emulation;

#[tokio::main]
async fn main() -> Result<(), rquest::Error> {
    // Build a client
    let client = Client::builder()
        .emulation(Emulation::Firefox136)
        .build()?;

    // Use the API you're already familiar with
    let resp = client.get("https://tls.peet.ws/api/all").send().await?;
    println!("{}", resp.text().await?);

    Ok(())
}

Emulation

• HTTP/2 over TLS

Due to the complexity of TLS encryption and the widespread adoption of HTTP/2, browser fingerprints such as JA3, JA4, and Akamai cannot be reliably emulated using simple fingerprint strings. Instead of parsing and emulating these string-based fingerprints, rquest provides fine-grained control over TLS and HTTP/2 extensions and settings for precise browser behavior emulation.

• Device Emulation

Most browser device models share identical TLS and HTTP/2 configurations, differing only in the User-Agent string. Common browser device emulation templates are maintained in rquest-util, a companion utility crate.

Building

Avoid compiling with packages that depend on openssl-sys, as it shares the same prefix symbol with boring-sys, potentially leading to link failures and other issues. Even if compilation succeeds, using both openssl-sys and boring-sys together can result in memory segmentation faults. Until the upstream Boring resolves these linking conflicts, using rustls is the best workaround.

Install the dependencies required to build BoringSSL

sudo apt-get install build-essential cmake perl pkg-config libclang-dev musl-tools git -y

cargo build --release

This GitHub Actions workflow can be used to compile the project on Linux, Windows, and macOS.

License

Released under the Apache-2.0 License.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be licensed as above, without any additional terms or conditions.

Sponsors

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Accolades

The project is based on a fork of reqwest.