From fe70816eb28e654ba2dc8d24dcb92b5c2685e847 Mon Sep 17 00:00:00 2001
From: zonyitoo <zonyitoo@gmail.com>
Date: Fri, 27 Dec 2019 19:19:28 +0800
Subject: [PATCH] Fixed bug, single server doesnt need to wait

---
 src/relay/loadbalancing/server/ping.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/relay/loadbalancing/server/ping.rs b/src/relay/loadbalancing/server/ping.rs
index 9e4bbf8f..cce0496c 100644
--- a/src/relay/loadbalancing/server/ping.rs
+++ b/src/relay/loadbalancing/server/ping.rs
@@ -253,7 +253,9 @@ impl Inner {
             );
         }
 
-        barrier.wait().await;
+        if check_required {
+            barrier.wait().await;
+        }
 
         Inner {
             servers,