Rustでパケットと戯れる

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7. No.1 No.4 No.3 No.2
9. No.2
10. No.2 • • • • • • • • •
11. No.2 http://rust-lang-ja.org/rust-by-example/index.html
12. fn main() { println!("Hello World!"); } No.2 src/main.rs
13. $cargo run Hello World! No.2 src/main.rs
14. use std::process::Command; fn main() { Command::new("ls") .arg("-l") .arg("-a") .spawn() .expect("ls command failed to start"); } No.2
15. use std::net::{TcpListener, TcpStream}; use std::thread; // traits use std::io::Read; use std::io::Write; fn handle_client(mut stream: TcpStream) { let mut buf; loop { // clear out the buffer so we don't send garbage buf = [0; 512]; let _ = match stream.read(&mut buf) { Err(e) => panic!("Got an error: {}", e), Ok(m) => { if m == 0 { // we've got an EOF break; } m }, }; match stream.write(&buf) { Err(_) => break, Ok(_) => continue, } } } fn main() { let listener = TcpListener::bind("127.0.0.1:8888").unwrap(); for stream in listener.incoming() { match stream { Err(e) => { println!("failed: {}", e) } Ok(stream) => { thread::spawn(move || { handle_client(stream) }); } } } } No.2
18. No.3
19. No.3
20. No.3 • • • • https://rust-lang-ja.github.io/the-rust-programming- language-ja/1.6/book/crates-and-modules.html
21. No.3 • • • •