diff --git a/6.ts b/6.ts
index 3539d13..651fc82 100644
--- a/6.ts
+++ b/6.ts
@@ -21,7 +21,9 @@ function chatSession(conn: Deno.Conn) {
 
 async function serve(conn: Deno.Conn) {
   const reader = new BufReader(conn);
-  reader.peek(1);
+  const type = await reader.peek(1);
+  if (!type) throw new Error("failed to peek start of packet");
+  console.log(type);
 }
 
 for await (const conn of Deno.listen({ port: PORT })) {