feature: multi-threads support
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6a8e6095e5
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2c84f7ebbc
@ -4,6 +4,8 @@ use clap::{App, Arg};
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use std::io::prelude::*;
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use std::net::{TcpListener, TcpStream};
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use echo_ip::ThreadPool;
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fn main() {
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let matches = App::new("EchoIP")
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.version("1.0")
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@ -32,6 +34,7 @@ fn main() {
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let bind_address = host.to_owned() + ":" + port;
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let listener = TcpListener::bind(&bind_address);
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let pool = ThreadPool::new(4);
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match listener {
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Ok(n) => {
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@ -40,25 +43,30 @@ fn main() {
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println!("-----------------------------------------------------------");
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for stream in n.incoming() {
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let stream = stream.unwrap();
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//thread::spawn(|| {
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pool.execute(|| {
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handle_connection(stream);
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});
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}
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}
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},
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Err(_e) => println!("Address already in use: {}", bind_address),
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}
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}
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fn handle_connection(mut stream: TcpStream) {
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let mut buffer = [0; 1024];
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let remote_addr = stream.peer_addr().unwrap().ip().to_string();
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stream.read(&mut buffer).unwrap();
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let response = "HTTP/1.1 200 OK\r\n\r\n";
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stream.write(response.as_bytes()).unwrap();
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stream.write(remote_addr.as_bytes()).unwrap();
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stream.write("\r\n".as_bytes()).unwrap();
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stream.flush().unwrap();
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let remote_addr = stream.peer_addr().unwrap().ip();
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println!("{}", stream.read(&mut buffer).unwrap());
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println!("{}", String::from_utf8_lossy(&buffer[..]));
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//stream.read(&mut buffer).unwrap();
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let get = b"GET / HTTP/1.1\r\n";
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let (status_line, contents) = if buffer.starts_with(get) {
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("HTTP/1.1 200 OK", remote_addr.to_string())
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} else {
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("HTTP/1.1 404 NOT FOUND", "URL ERROR".to_string())
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};
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println!("echo {}", remote_addr);
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let response = format!("{}\r\n\r\n{}\r\n", status_line, contents);
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stream.write(response.as_bytes()).unwrap();
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stream.flush().unwrap();
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}
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89
src/lib.rs
Normal file
89
src/lib.rs
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@ -0,0 +1,89 @@
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use std::sync::mpsc;
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use std::sync::Arc;
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use std::sync::Mutex;
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use std::thread;
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enum Message {
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NewJob(Job),
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Terminate,
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}
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pub struct ThreadPool {
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workers: Vec<Worker>,
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sender: mpsc::Sender<Message>,
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}
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//struct Job;
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type Job = Box<dyn FnOnce() + Send + 'static>;
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impl ThreadPool {
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pub fn new(size: usize) -> ThreadPool {
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assert!(size > 0);
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let (sender, receiver) = mpsc::channel();
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let receiver = Arc::new(Mutex::new(receiver));
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let mut workers = Vec::with_capacity(size);
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for id in 0..size {
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workers.push(Worker::new(id, Arc::clone(&receiver)))
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}
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ThreadPool { workers, sender }
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}
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pub fn execute<F>(&self, f: F)
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where
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F: FnOnce() + Send + 'static,
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{
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let job = Box::new(f);
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self.sender.send(Message::NewJob(job)).unwrap();
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}
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}
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impl Drop for ThreadPool {
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fn drop(&mut self) {
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println!("Sending terminate message to all wokers.");
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for _ in &mut self.workers {
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self.sender.send(Message::Terminate).unwrap();
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}
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println!("Shutting down all workers.");
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for worker in &mut self.workers {
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println!("shutdown down work {}", worker.id);
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if let Some(thread) = worker.thread.take() {
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thread.join().unwrap();
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}
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}
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}
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}
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pub struct Worker {
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id: usize,
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thread: Option<thread::JoinHandle<()>>,
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}
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impl Worker {
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fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Message>>>) -> Worker {
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let thread = thread::spawn(move || {
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//receiver;
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loop {
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let message = receiver.lock().unwrap().recv().unwrap();
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match message {
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Message::NewJob(job) => {
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println!("worker {} got a job; executing.", id);
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job();
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}
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Message::Terminate => {
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println!("worker {} was told to terminate.", id);
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break;
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}
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}
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}
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});
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Worker {
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id,
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thread: Some(thread),
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}
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}
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}
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