Initial data commit

Task/Echo-server/Rust/echo-server.rust

@@ -0,0 +1,27 @@
+use std::net::{TcpListener, TcpStream};
+use std::io::{BufReader, BufRead, Write};
+use std::thread;
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:12321").unwrap();
+    println!("server is running on 127.0.0.1:12321 ...");
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+        thread::spawn(move || handle_client(stream));
+    }
+}
+
+fn handle_client(stream: TcpStream) {
+    let mut stream = BufReader::new(stream);
+    loop {
+        let mut buf = String::new();
+        if stream.read_line(&mut buf).is_err() {
+            break;
+        }
+        stream
+            .get_ref()
+            .write(buf.as_bytes())
+            .unwrap();
+    }
+}