make-http-request-with-reqwest

Make HTTP request with reqwest

Rust example code to make an HTTP GET request to a URL and print the response body, with the reqwest crate.

In the file Cargo.toml, add reqwest and tokio for async functions:

[dependencies]
reqwest = "*"
tokio = { version = "*", features = ["full"] }

main.rs:

use reqwest::Error;

async fn fetch(url: &str) -> Result<String, Error> {
    let response = reqwest::get(url).await?;
    let body = response.text().await?;
    Ok(body)
}

#[tokio::main]
async fn main() -> Result<(), Error> {
    let url = "https://www.example.com";
    let response_body = fetch(url).await?;
    println!("{}", response_body);
    Ok(())
}

This code defines an asynchronous function fetch that takes a URL as input and returns a Result containing the response body as a String if the request succeeds. The function uses the reqwest::get function to make an HTTP GET request to the specified URL, and then uses the text method of the response object to extract the response body as a string.

In the main function, we call fetch with a URL and then print the response body to the console. Note that this code assumes that the URL is valid and that the server responds with a successful HTTP status code. Also, we use #[tokio::main] attribute to execute our async main function, as we are using async-await in our fetch function.