Updated 'src/final_project/mutlithreaded.md'.

projects/hello/src/main.rs

@@ -1,16 +1,21 @@
 use std::{
     fs,
-    io::{BufReader, prelude::*},
+    io::{prelude::*, BufReader},
     net::{TcpListener, TcpStream},
+    thread,
+    time::Duration,
 };
 
 fn main() {
     let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
 
     for stream in listener.incoming() {
         let stream = stream.unwrap();
 
-        handle_connection(stream);
+        pool.execute(|| {
+            handle_connection(stream);
+        });
     }
 }
 
@@ -18,12 +23,16 @@ fn handle_connection(mut stream: TcpStream) {
     let buf_reader = BufReader::new(&stream);
     let request_line = buf_reader.lines().next().unwrap().unwrap();
 
-    let (status_line, filename) = if request_line == "GET / HTTP/1.1" {
-        ("HTTP/1.1 200 OK", "hello.html")
-    } else {
-        ("HTTP/1.1 404 NOT FOUND", "404.html")
+    let (status_line, filename) = match &request_line[..] {
+        "GET / HTTP/1.1" => ( "HTTP/1.1 200 OK", "hello.html"),
+        "GET /sleep HTTP/1.1" => {
+            thread::sleep(Duration::from_secs(5));
+            ("HTTP/1.1 200 0K", "hello.html")
+        }
+        _ => ("HTTP/1.1 404 NOT FOUND", "404.html"),
     };
 
+
     let contents = fs::read_to_string(filename).unwrap();
     let length = contents.len();