Hostname named struct

hptp-recv/src/main.rs

@@ -1,10 +1,13 @@
 extern crate hptp;
 
 #[derive(Debug)]
-struct Hostname(String, u16);
+struct Hostname {
+    ip: String,
+    port: u16,
+}
 
 fn go(hn: Hostname) {
-    println!("{:?}", hn)
+    println!("ip={}, port={}", hn.ip, hn.port)
 }
 
 fn usage() {
@@ -15,9 +18,12 @@ fn parse_args() -> Result<Hostname, ()> {
     let mut args = std::env::args();
     let arg = args.nth(1).ok_or(())?;
     let i = arg.find(':').ok_or(())?;
-    let ip: String = arg[..i].into();
-    let port: u16 = arg[i + 1..].parse::<u16>().map_err(|_| ())?;
-    Ok(Hostname(ip, port))
+    let ip = &arg[..i];
+    let port: u16 = arg[i + 1..].parse().map_err(|_| ())?;
+    Ok(Hostname {
+        ip: ip.into(),
+        port,
+    })
 }
 
 fn main() {