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main.rs
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main.rs
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use std::net::{TcpListener, TcpStream};
use std::thread;
use std::io::prelude::{Write};
use std::io::{BufReader, BufRead, BufWriter};
fn main() {
let listener = TcpListener::bind("127.0.0.1:54321").unwrap();
for stream in listener.incoming() {
match stream {
Ok(to_client_stream) => {
thread::spawn(move || {
handle_client(to_client_stream);
});
}
Err(e) => {
println!("Error Message: {}", e);
}
}
}
drop(listener);
}
fn handle_client(stream: TcpStream) {
// Check IP Address
let addr = stream.peer_addr().unwrap();
println!("Get a connection from {}", addr);
// Create a buffer reader and a writer
// XXX: Why can we just pass immutable reference
// istead of mutable reference here ?
let mut reader = BufReader::new(&stream);
let mut writer = BufWriter::new(&stream);
// Send a message
writer.write(b"Hello Meow!! Please enter a message:\n").unwrap();
writer.flush().unwrap();
// Receive a message
let mut message = String::new();
reader.read_line(&mut message).unwrap();
// Echo it
writer.write(b"Your message: ").unwrap();
writer.write(message.trim().as_bytes()).unwrap();
writer.write(b"\nThank you for your using.\n").unwrap();
}