From 185aaa7184104ec49074ca12bca9906bd21009ef Mon Sep 17 00:00:00 2001
From: Tony Chen <zhihui_chen@foxmail.com>
Date: Tue, 18 Oct 2022 21:36:06 +0800
Subject: [PATCH] fix net error (#2460)

---
 selector/node/ewma/node.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/selector/node/ewma/node.go b/selector/node/ewma/node.go
index 4fed4aaa2..46d5c41cc 100644
--- a/selector/node/ewma/node.go
+++ b/selector/node/ewma/node.go
@@ -4,6 +4,7 @@ import (
 	"container/list"
 	"context"
 	"math"
+	"net"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -158,8 +159,9 @@ func (n *Node) Pick() selector.DoneFunc {
 			if n.errHandler != nil && n.errHandler(di.Err) {
 				success = 0
 			}
+			var netErr net.Error
 			if errors.Is(context.DeadlineExceeded, di.Err) || errors.Is(context.Canceled, di.Err) ||
-				errors.IsServiceUnavailable(di.Err) || errors.IsGatewayTimeout(di.Err) {
+				errors.IsServiceUnavailable(di.Err) || errors.IsGatewayTimeout(di.Err) || errors.As(di.Err, netErr) {
 				success = 0
 			}
 		}