Update cargo project

Source/lib.rs

@@ -0,0 +1,30 @@
+#![allow(non_snake_case)]
+
+use std::fs;
+use std::io::prelude::*;
+use std::net::TcpStream;
+
+pub fn HandleConnection(mut stream: TcpStream) {
+    let mut buffer = [0; 1024];
+    stream.read(&mut buffer).unwrap();
+
+    let get = b"GET / HTTP/1.1\r\n";
+
+    let (status_line, filename) = if buffer.starts_with(get) {
+        ("HTTP/1.1 200 OK", "Hello.html")
+    } else {
+        ("HTTP/1.1 404 NOT FOUND", "404.html")
+    };
+
+    let contents = fs::read_to_string(format!("Resources/{}", filename)).unwrap();
+
+    let response = format!(
+        "{}\r\nContent-Length: {}\r\n\r\n{}",
+        status_line,
+        contents.len(),
+        contents,
+    );
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}