Simplify test code a bit, use Request::new() to simplfy constructing requests

client/src/main.rs

@@ -9,12 +9,12 @@ fn main() -> std::io::Result<()> {
     let mut stream = UnixStream::connect(&OPTIONS.socket_name)?;
     println!("Connected to server");
 
-    let request = Request {
-        userid: OPTIONS.username.clone(),
-        password: OPTIONS.password.clone(),
-        service: "ignore-this".to_string(),
-        realm: "also-ignore-this".to_string(),
-    };
+    let request = Request::new(
+        &OPTIONS.username,
+        &OPTIONS.password,
+        "ignore-this",
+        "also-ignore-this",
+    );
 
     request.write_to_stream(&mut stream)?;
     let response = read_string(&mut stream)?;