create a http server with a put route in rust

To create an HTTP server with a PUT request route in Rust, we can use the Actix-Web or Hyper library. Here's an example using the Actix-web library:


main.rs
use actix_web::{web, App, HttpResponse, HttpServer};
use std::fs::File;
use std::io::Write;

async fn put_handler(body: web::Bytes) -> HttpResponse {
    // create a file to store the contents of the PUT request body
    let mut file = File::create("put_request.txt").expect("Unable to create file");

    // write the contents of the PUT request body to the file
    file.write_all(&body).expect("Unable to write data");

    HttpResponse::Ok().into()
}

#[actix_web::main]
async fn main() -> std::io::Result<()> {
    HttpServer::new(|| {
        App::new()
            // add the PUT route and pass the put_handler function as the handler
            .route("/", web::put().to(put_handler))
    })
    .bind("127.0.0.1:8080")?
    .run()
    .await
}
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In this example, we created a PUT request route at the root of the server ("/") by using the web::put() method provided by the Actix-Web library. We also specified a handler function, put_handler, that takes in the contents of the PUT request body as a web::Bytes parameter. Inside the handler function, we create a file named "put_request.txt" and write the contents of the PUT request body to it. Finally, we return an HTTP 200 OK response.

Note that this is just a basic example, and you may need to modify it to suit your specific needs.

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