From 528fbd10e412ad811425a542515d337974efb13d Mon Sep 17 00:00:00 2001
From: beyondkmp <beyondkmp@gmail.com>
Date: Fri, 2 Aug 2019 09:22:09 +0800
Subject: [PATCH] Fix(dns): use closure client (#251)

---
 dns/resolver.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dns/resolver.go b/dns/resolver.go
index ecea9adf..4e66f17c 100644
--- a/dns/resolver.go
+++ b/dns/resolver.go
@@ -182,7 +182,8 @@ func (r *Resolver) batchExchange(clients []resolver, m *D.Msg) (msg *D.Msg, err
 	defer cancel()
 	fast, ctx := picker.WithContext(ctx)
 
-	for _, r := range clients {
+	for _, client := range clients {
+		r := client
 		fast.Go(func() (interface{}, error) {
 			msg, err := r.ExchangeContext(ctx, m)
 			if err != nil || msg.Rcode != D.RcodeSuccess {