Rename server.rs to handler.rs for clarity, since this is responsible for handling one interaction with a client

server/src/handler.rs

@@ -0,0 +1,34 @@
+use crate::repository::PasswordDirectory;
+use common::{Request, RESPONSE_NO, RESPONSE_OK};
+use std::io::{Error, Write};
+use std::os::unix::net::UnixStream;
+
+pub struct Handler {
+    stream: UnixStream,
+    handler: PasswordDirectory,
+}
+
+impl Handler {
+    pub fn new(stream: UnixStream, handler: PasswordDirectory) -> Result<Handler, Error> {
+        Ok(Handler { stream, handler })
+    }
+
+    fn communicate(&mut self) -> Result<(), Error> {
+        let request = Request::from_stream(&mut self.stream)?;
+
+        println!("userid: {}", request.userid);
+        if self.handler.check_auth(&request) {
+            self.stream.write_all(&RESPONSE_OK)?
+        } else {
+            self.stream.write_all(&RESPONSE_NO)?
+        }
+
+        Ok(())
+    }
+
+    pub fn handle_client(&mut self) {
+        if let Err(error) = self.communicate() {
+            eprint!("{error}");
+        }
+    }
+}