From 0a9f7f123c67e91660bb16016fd9f66f7adf1313 Mon Sep 17 00:00:00 2001
From: xjasonlyu <xjasonlyu@gmail.com>
Date: Tue, 29 Mar 2022 16:18:52 +0800
Subject: [PATCH] Chore: use tcpip.Error

---
 core/tcp.go | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/core/tcp.go b/core/tcp.go
index b2f43c4..c7b2de3 100644
--- a/core/tcp.go
+++ b/core/tcp.go
@@ -1,7 +1,6 @@
 package core
 
 import (
-	"fmt"
 	"time"
 
 	"github.com/xjasonlyu/tun2socks/v2/core/adapter"
@@ -65,21 +64,21 @@ func withTCPHandler(handle adapter.TCPHandleFunc) option.Option {
 	}
 }
 
-func setKeepalive(ep tcpip.Endpoint) error {
+func setKeepalive(ep tcpip.Endpoint) tcpip.Error {
 	ep.SocketOptions().SetKeepAlive(true)
 
 	idle := tcpip.KeepaliveIdleOption(tcpKeepaliveIdle)
 	if err := ep.SetSockOpt(&idle); err != nil {
-		return fmt.Errorf("set keepalive idle: %s", err)
+		return err
 	}
 
 	interval := tcpip.KeepaliveIntervalOption(tcpKeepaliveInterval)
 	if err := ep.SetSockOpt(&interval); err != nil {
-		return fmt.Errorf("set keepalive interval: %s", err)
+		return err
 	}
 
 	if err := ep.SetSockOptInt(tcpip.KeepaliveCountOption, tcpKeepaliveCount); err != nil {
-		return fmt.Errorf("set keepalive count: %s", err)
+		return err
 	}
 	return nil
 }