From 34646cd974f39bd074baee181b622e0450707087 Mon Sep 17 00:00:00 2001
From: Ray <111646748+Luv-Ray@users.noreply.github.com>
Date: Thu, 24 Aug 2023 21:36:22 +0800
Subject: [PATCH] Update web-server.md
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使用了Duration::from_secs(5)，需要增加对Duration的引入
---
 src/advance/async/web-server.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/advance/async/web-server.md b/src/advance/async/web-server.md
index 88d704a9..a76dedd1 100644
--- a/src/advance/async/web-server.md
+++ b/src/advance/async/web-server.md
@@ -134,6 +134,7 @@ async fn main() {
 **上面的代码虽然已经是异步的，实际上它还无法并发**，原因我们后面会解释，先来模拟一下慢请求:
 
 ```rust
+use std::time::Duration;
 use async_std::task;
 
 async fn handle_connection(mut stream: TcpStream) {