create a http server with a connect route in rust

To create an HTTP server with a connect route in Rust, you can use the hyper crate, which is a popular Rust library for working with HTTP.

First, add the hyper crate to your project's Cargo.toml file:


[dependencies]
hyper = "0.13"
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Then, you can create a simple HTTP server with a connect route like this:


main.rs
use hyper::{Body, Request, Response, Server};
use hyper::service::{make_service_fn, service_fn};
use std::convert::Infallible;

async fn handle(req: Request<Body>) -> Result<Response<Body>, Infallible> {
    let body = Body::from("Hello, World!");
    Ok(Response::new(body))
}

#[tokio::main]
async fn main() {
    let addr = ([127, 0, 0, 1], 3000).into();

    let make_svc = make_service_fn(|_conn| async {
        Ok::<_, Infallible>(service_fn(handle))
    });

    let server = Server::bind(&addr).serve(make_svc);

    println!("Listening on http://{}", addr);

    if let Err(e) = server.await {
        eprintln!("server error: {}", e);
    }
}
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In this example, the handle function is used to handle incoming requests. It simply returns a Response with a "Hello, World!" body.

The make_service_fn function is used to create a new service for each incoming connection, and service_fn is used to wrap the handle function in a new service.

Finally, we create a new Server that listens on the specified address and serves the new service for each incoming connection. We also print a message indicating where the server is listening.

When you run this program, you should see output like this:


main.rs
Listening on http://127.0.0.1:3000
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You can then connect to the server using your web browser or a tool like cURL.

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