From 232aba20806c5ae2b06fbfd5dadbf82871e4a30e Mon Sep 17 00:00:00 2001
From: Robert Collins <robertc@robertcollins.net>
Date: Mon, 12 Feb 2018 23:52:03 +1300
Subject: [PATCH] Wait for spawned thread

A spawned thread doesn't block the main thread exiting unless explicitly joined.
The demo as written in the guide simply exits immediately at the moment.
---
 guide/src/qs_2.md | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/guide/src/qs_2.md b/guide/src/qs_2.md
index 80852895e..10a50e393 100644
--- a/guide/src/qs_2.md
+++ b/guide/src/qs_2.md
@@ -79,13 +79,14 @@ fn index(req: HttpRequest) -> &'static str {
 }
 
 fn main() {
-# thread::spawn(|| {
+# let child = thread::spawn(|| {
     HttpServer::new(
         || Application::new()
             .resource("/", |r| r.f(index)))
         .bind("127.0.0.1:8088").expect("Can not bind to 127.0.0.1:8088")
         .run();
-# });
+  });
+# child.join().expect("failed to join server thread");
 }
 ```