diff --git a/src/async/tasks.md b/src/async/tasks.md
index 78b99de8..86e1a552 100644
--- a/src/async/tasks.md
+++ b/src/async/tasks.md
@@ -13,8 +13,8 @@ use tokio::net::TcpListener;
 
 #[tokio::main]
 async fn main() -> io::Result<()> {
-    let listener = TcpListener::bind("127.0.0.1:6142").await?;
-    println!("listening on port 6142");
+    let listener = TcpListener::bind("127.0.0.1:0").await?;
+    println!("listening on port {}", listener.local_addr()?.port());
 
     loop {
         let (mut socket, addr) = listener.accept().await?;
@@ -22,26 +22,13 @@ async fn main() -> io::Result<()> {
         println!("connection from {addr:?}");
 
         tokio::spawn(async move {
-            if let Err(e) = socket.write_all(b"Who are you?\n").await {
-                println!("socket error: {e:?}");
-                return;
-            }
+            socket.write_all(b"Who are you?\n").await.expect("socket error");
 
             let mut buf = vec![0; 1024];
-            let reply = match socket.read(&mut buf).await {
-                Ok(n) => {
-                    let name = std::str::from_utf8(&buf[..n]).unwrap().trim();
-                    format!("Thanks for dialing in, {name}!\n")
-                }
-                Err(e) => {
-                    println!("socket error: {e:?}");
-                    return;
-                }
-            };
-
-            if let Err(e) = socket.write_all(reply.as_bytes()).await {
-                println!("socket error: {e:?}");
-            }
+            let name_size = socket.read(&mut buf).await.expect("socket error");
+            let name = std::str::from_utf8(&buf[..name_size]).unwrap().trim();
+            let reply = format!("Thanks for dialing in, {name}!\n");
+            socket.write_all(reply.as_bytes()).await.expect("socket error");
         });
     }
 }