test example for server that replies request by line

src/bin/server.rs

+use std::{
+    io::{prelude::*, BufReader},
+    net::{TcpListener, TcpStream},
+};
+use std::io::Lines;
+
 fn main() {
-    println! ("server");
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+
+        handle_connection(stream);
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut stream2: TcpStream = stream.try_clone().unwrap();
+    let buf_reader: BufReader<&mut TcpStream> = BufReader::new(&mut stream);
+    let request: Lines<BufReader<&mut TcpStream>> = buf_reader.lines();
+
+    println!("Request: {:#?}", request);
+
+    for elem in request
+    {
+        let s = elem.unwrap();
+        println!("{:?}", s);
+        stream2.write(s.as_bytes()).unwrap();
+        stream2.write_all(b"\n").unwrap();
+    }
 }