commit 6a02133b7bdad49a4d5ea9af48b2cfc4fe3f6d3c
Author: Yaser Hsueh <xueye404@qq.com>
Date:   Sat Jun 4 01:55:01 2022 +0800

    Initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..38b6d86
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "echo"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/src/bin/main.rs b/src/bin/main.rs
new file mode 100644
index 0000000..2d877c4
--- /dev/null
+++ b/src/bin/main.rs
@@ -0,0 +1,23 @@
+use std::net::{TcpListener, TcpStream};
+use std::io::prelude::*;
+
+fn main() {
+    let listener = TcpListener::bind("0.0.0.0:8888").unwrap();
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+        handle_connection(stream);
+    }
+}
+
+fn handle_connection(mut stream: TcpStream) {
+    let mut buffer = [0; 1024];
+    let remote_addr = stream.peer_addr().unwrap().ip().to_string();
+
+    stream.read(&mut buffer).unwrap();
+
+    let response = "HTTP/1.1 200 OK\r\n\r\n";
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.write(remote_addr.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}