refactor: migration to library

src/lib.rs

@@ -0,0 +1,37 @@
+use std::io::prelude::*;
+use std::net::{SocketAddr, TcpListener};
+
+mod http;
+
+fn principal() {
+    let addr = SocketAddr::from(([127, 0, 0, 1], 80));
+
+    let listener = TcpListener::bind(addr).unwrap();
+
+    println!("Server up and running!");
+
+    for stream in listener.incoming() {
+        let mut _stream = stream.unwrap();
+        println!("Connection established!");
+        let response = http::process_petition(&mut _stream);
+
+        // TODO: manage error case
+        let _amount = _stream.write(response.data.as_bytes()).unwrap();
+        _stream.flush().unwrap();
+    }
+}
+
+pub fn add(left: u64, right: u64) -> u64 {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}