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["derive"] } ctrlc = {version = "3.2.4", features=["termination"]} + diff --git a/src/main.rs b/src/bin/echo-ip.rs similarity index 63% rename from src/main.rs rename to src/bin/echo-ip.rs index bbd9cc4..54b8519 100644 --- a/src/main.rs +++ b/src/bin/echo-ip.rs @@ -1,5 +1,5 @@ extern crate clap; -use clap::{App, Arg, ArgMatches}; +//use clap::{App, Arg, ArgMatches}; use std::io::prelude::*; use std::net::{TcpListener, TcpStream}; use std::process; @@ -9,15 +9,29 @@ use std::thread; use ctrlc; use echo_ip::ThreadPool; +use clap::Parser; + +#[derive(Parser, Debug)] +#[command(name="echo-ip", author, version, about, long_about = None)] +struct Args { + /// address to listening + #[arg(short, long, default_value = "0.0.0.0", value_name = "IP")] + listen: String, + /// port to listening + #[arg(short, long, default_value = "8888")] + port: String, +} + + fn main() { let (tx, rx) = channel(); ctrlc::set_handler(move || tx.send(()).expect("Could not send signal on channel.")) .expect("Error setting Ctrl+C handler"); thread::spawn(move || { - let matches = handle_args(); - let host = matches.value_of("server").unwrap_or("0.0.0.0"); - let port = matches.value_of("port").unwrap_or("8888"); - create_listener(host, port); + let args = Args::parse(); + let host = args.listen; + let port = args.port; + create_listener(&host, &port); }); rx.recv().expect("Could not receive from channel."); println!("Exiting..."); @@ -31,7 +45,7 @@ fn create_listener(host: &str, port: &str) { match listener { Ok(n) => { println!("-----------------------------------------------------------"); - println!("Server listening on {}", &port); + println!("Server listening on {}:{}", &host, &port); println!("-----------------------------------------------------------"); for stream in n.incoming() { let stream = stream.unwrap(); @@ -44,30 +58,6 @@ fn create_listener(host: &str, port: &str) { } } -fn handle_args() -> ArgMatches<'static> { - return App::new("echo-ip") - .version("1.0") - .author("Yaser Hsueh ") - .about("https://www.simaek.com") - .arg( - Arg::with_name("port") - .short("p") - .long("port") - .value_name("port") - .help("listening port") - .takes_value(true), - ) - .arg( - Arg::with_name("server") - .short("s") - .long("server") - .value_name("host") - .help("listening address") - .takes_value(true), - ) - .get_matches(); -} - fn handle_connection(mut stream: TcpStream) { let mut buffer = [0; 1024]; let remote_addr = stream.peer_addr().unwrap().ip(); @@ -77,7 +67,7 @@ fn handle_connection(mut stream: TcpStream) { let (status_line, contents) = if buffer.starts_with(get) { ("HTTP/1.1 200 OK", remote_addr.to_string()) } else { - ("HTTP/1.1 404 NOT FOUND", "URL ERROR".to_string()) + ("HTTP/1.1 404 NOT FOUND", "ERROR".to_string()) }; println!("echo {}", remote_addr); let response = format!("{}\r\n\r\n{}\r\n", status_line, contents);