rquest 5.1.0

A blazing-fast Rust HTTP Client with TLS fingerprint
Documentation 
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use http::{HeaderValue, header};

#[tokio::main]
async fn main() -> Result<(), rquest::Error> {
    // Build a client
    let client = rquest::Client::new();

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

    // Set a header
    client.update().headers(update_headers).apply()?;

    // 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(())
}

fn update_headers(headers: &mut http::HeaderMap) {
    headers.insert(header::ACCEPT, HeaderValue::from_static("application/json"));
}