You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: main.rs
    path of file: ./repos/Rust-Full-Stack/auth/rust/actix/actix_examples/protobuf/src
    
    the code of the file until where you have to start completion: extern crate actix;
extern crate actix_protobuf;
extern crate actix_web;
extern crate bytes;
extern crate env_logger;
extern crate prost;
#[macro_use]
extern crate prost_derive;

use actix_protobuf::*;
use actix_web::*;

#[derive(Clone, PartialEq, Message)]
pub struct MyObj {
    #[prost(int32, tag = "1")]
    pub number: i32,
    #
    
fn main() {
    ::std::env::set_var("RUST_LOG", "actix_web=info,actix_server=info");
    env_logger::init();
    let sys = actix::System::new("protobuf-example");

    HttpServer::new(|| {
        App::new()
            .wrap(middleware::Logger::default())
            .service(web::resource("/").route(web::post().to(index)))
    })
    .bind("127.0.0.1:8081")
    .unwrap()
    .shutdown_timeout(1)
    .start();

    println!("Started http server: 127.0.0.1:8081");
    let _ = sys.run();
}