Improve server error handling

inbound/default.go

@@ -13,6 +13,8 @@ import (
 	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
+
+	"go.uber.org/atomic"
 )
 
 var _ adapter.Inbound = (*myInboundAdapter)(nil)
@@ -42,6 +44,8 @@ type myInboundAdapter struct {
 	udpAddr              M.Socksaddr
 	packetOutboundClosed chan struct{}
 	packetOutbound       chan *myInboundPacket
+
+	inShutdown atomic.Bool
 }
 
 func (a *myInboundAdapter) Type() string {
@@ -97,6 +101,7 @@ func (a *myInboundAdapter) Start() error {
 }
 
 func (a *myInboundAdapter) Close() error {
+	a.inShutdown.Store(true)
 	var err error
 	if a.clearSystemProxy != nil {
 		err = a.clearSystemProxy()

inbound/default_tcp.go

@@ -39,10 +39,17 @@ func (a *myInboundAdapter) loopTCPIn() {
 	for {
 		conn, err := tcpListener.Accept()
 		if err != nil {
-			if E.IsClosed(err) {
+			//goland:noinspection GoDeprecation
+			//nolint:staticcheck
+			if netError, isNetError := err.(net.Error); isNetError && netError.Temporary() {
+				a.logger.Error(err)
+				continue
+			}
+			if a.inShutdown.Load() && E.IsClosed(err) {
 				return
 			}
-			a.logger.Error("accept: ", err)
+			a.tcpListener.Close()
+			a.logger.Error("serve error: ", err)
 			continue
 		}
 		go a.injectTCP(conn, adapter.InboundContext{})