test: add 4 rust files for round 2 scan test

src/test_scan_round2/service_1.rs

@@ -0,0 +1,19 @@
+use std::io::{self, Read, Write};
+use std::net::TcpListener;
+use std::fs::File;
+use std::process::Command;
+
+fn handle_connection(mut stream: std::net::TcpStream) -> io::Result<()> {
+    let mut buffer = [0; 1024];
+    stream.read(&mut buffer)?;
+    let response = "HTTP/1.1 200 OK\r\n\r\nHello";
+    stream.write_all(response.as_bytes())
+}
+
+fn main() -> io::Result<()> {
+    let listener = TcpListener::bind("127.0.0.1:8080")?;
+    for stream in listener.incoming() {
+        handle_connection(stream?)?;
+    }
+    Ok(())
+}

src/test_scan_round2/service_2.rs

@@ -0,0 +1,19 @@
+use std::io::{self, Read, Write};
+use std::net::TcpListener;
+use std::fs::File;
+use std::process::Command;
+
+fn handle_connection(mut stream: std::net::TcpStream) -> io::Result<()> {
+    let mut buffer = [0; 1024];
+    stream.read(&mut buffer)?;
+    let response = "HTTP/1.1 200 OK\r\n\r\nHello";
+    stream.write_all(response.as_bytes())
+}
+
+fn main() -> io::Result<()> {
+    let listener = TcpListener::bind("127.0.0.1:8080")?;
+    for stream in listener.incoming() {
+        handle_connection(stream?)?;
+    }
+    Ok(())
+}

src/test_scan_round2/service_3.rs

@@ -0,0 +1,19 @@
+use std::io::{self, Read, Write};
+use std::net::TcpListener;
+use std::fs::File;
+use std::process::Command;
+
+fn handle_connection(mut stream: std::net::TcpStream) -> io::Result<()> {
+    let mut buffer = [0; 1024];
+    stream.read(&mut buffer)?;
+    let response = "HTTP/1.1 200 OK\r\n\r\nHello";
+    stream.write_all(response.as_bytes())
+}
+
+fn main() -> io::Result<()> {
+    let listener = TcpListener::bind("127.0.0.1:8080")?;
+    for stream in listener.incoming() {
+        handle_connection(stream?)?;
+    }
+    Ok(())
+}

src/test_scan_round2/service_4.rs

@@ -0,0 +1,19 @@
+use std::io::{self, Read, Write};
+use std::net::TcpListener;
+use std::fs::File;
+use std::process::Command;
+
+fn handle_connection(mut stream: std::net::TcpStream) -> io::Result<()> {
+    let mut buffer = [0; 1024];
+    stream.read(&mut buffer)?;
+    let response = "HTTP/1.1 200 OK\r\n\r\nHello";
+    stream.write_all(response.as_bytes())
+}
+
+fn main() -> io::Result<()> {
+    let listener = TcpListener::bind("127.0.0.1:8080")?;
+    for stream in listener.incoming() {
+        handle_connection(stream?)?;
+    }
+    Ok(())
+}