actix/src/main.rs


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// vim: tabstop=4 shiftwidth=4 expandtab


extern crate clap;
use actix_web::{get, App, HttpResponse, HttpServer, Responder};


#[actix_web::main]
async fn main() -> std::io::Result<()> {

    let cli_args = get_cli_args();
    let address = cli_args.value_of("address").unwrap();
    let port = cli_args.value_of("port").unwrap();

    println!("Binding to http://{}:{}", address, port);

    HttpServer::new(|| {
        App::new()
            .service(index_handler)
    })
    .bind(format!("{}:{}", address, port))?
    .run()
    .await
}

fn get_cli_args() -> clap::ArgMatches<'static> {
    clap::App::new("Actix Web Server")
        .about("Executable to run the web-template Web Server")
        .arg(clap::Arg::with_name("address")
            .help("The address to which the server binds")
            .long("address")
            .short("a")
            .takes_value(true)
            .default_value("127.0.0.1"))
        .arg(clap::Arg::with_name("port")
            .help("The port to which the server binds")
            .long("port")
            .short("p")
            .takes_value(true)
            .default_value("8080"))
        .get_matches()
}

#[get("/")]
async fn index_handler() -> impl Responder {
    HttpResponse::Ok().body("Hello world!")
}