From 24b388f4dd5a56aaf344928a52be54fb094cb6ee Mon Sep 17 00:00:00 2001
From: gVisor bot <gvisor-bot@google.com>
Date: Tue, 28 Sep 2021 23:15:53 +0800
Subject: [PATCH] Improve: avoid bufconn twice (#1650)

---
 common/net/bufconn.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common/net/bufconn.go b/common/net/bufconn.go
index cb7433d2..a50c7f03 100644
--- a/common/net/bufconn.go
+++ b/common/net/bufconn.go
@@ -11,6 +11,9 @@ type BufferedConn struct {
 }
 
 func NewBufferedConn(c net.Conn) *BufferedConn {
+	if bc, ok := c.(*BufferedConn); ok {
+		return bc
+	}
 	return &BufferedConn{bufio.NewReader(c), c}
 }