From 62425ad3e4806d361fce24957423a702e52e4fa6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=96=E7=95=8C?= <i@sekai.icu>
Date: Sat, 8 Apr 2023 08:10:03 +0800
Subject: [PATCH] Add close monitor

---
 cmd/sing-box/cmd_run.go | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/cmd/sing-box/cmd_run.go b/cmd/sing-box/cmd_run.go
index 9e296aa6..62df6092 100644
--- a/cmd/sing-box/cmd_run.go
+++ b/cmd/sing-box/cmd_run.go
@@ -10,6 +10,7 @@ import (
 	"sort"
 	"strings"
 	"syscall"
+	"time"
 
 	"github.com/sagernet/sing-box"
 	"github.com/sagernet/sing-box/common/badjsonmerge"
@@ -177,7 +178,10 @@ func run() error {
 				}
 			}
 			cancel()
+			closeCtx, closed := context.WithCancel(context.Background())
+			go closeMonitor(closeCtx)
 			instance.Close()
+			closed()
 			if osSignal != syscall.SIGHUP {
 				return nil
 			}
@@ -185,3 +189,13 @@ func run() error {
 		}
 	}
 }
+
+func closeMonitor(ctx context.Context) {
+	time.Sleep(3 * time.Second)
+	select {
+	case <-ctx.Done():
+		return
+	default:
+	}
+	log.Fatal("sing-box did not close!")
+}