make a http trace request in rust

To make an HTTP trace request in Rust, we can use the reqwest library along with the tracing and hyper crates.

Here's an example code snippet that makes an HTTP trace request using the reqwest library:


main.rs
use reqwest::Client;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    // create a tracing subscriber to output the HTTP trace logs
    let filter = tracing_subscriber::EnvFilter::new("my_crate=trace");
    let subscriber = tracing_subscriber::fmt().with_env_filter(filter).finish();
    tracing::subscriber::set_global_default(subscriber)?;

    // create a reqwest client with tracing middleware
    let client = Client::builder()
        .middleware(reqwest::middleware::Tracing::new())
        .build()?;

    // make an HTTP trace request
    let resp = client
        .get("https://httpbin.org/get")
        .trace()
        .send()
        .await?;

    println!("{:#?}", resp);
    Ok(())
}
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In this example, we first create a tracing subscriber with an environment filter that enables HTTP tracing. We then create a reqwest client with the Tracing middleware that will emit the HTTP trace logs. Finally, we make an HTTP trace request using the trace() method on the request builder.

When running this code snippet, the trace logs will be output to the console, providing visibility into the HTTP request and response.

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