fix: vless server close

transport/vless/encryption/server.go

@@ -27,6 +27,7 @@ type ServerInstance struct {
 	dKeyNfs  *mlkem.DecapsulationKey768
 	minutes  time.Duration
 	sessions map[[21]byte]*ServerSession
+	stop     bool
 }
 
 type ServerConn struct {
@@ -52,6 +53,9 @@ func (i *ServerInstance) Init(dKeyNfsData []byte, minutes time.Duration) (err er
 				time.Sleep(time.Minute)
 				now := time.Now()
 				i.Lock()
+				if i.stop {
+					return
+				}
 				for index, session := range i.sessions {
 					if now.After(session.expire) {
 						delete(i.sessions, index)
@@ -64,6 +68,13 @@ func (i *ServerInstance) Init(dKeyNfsData []byte, minutes time.Duration) (err er
 	return
 }
 
+func (i *ServerInstance) Close() (err error) {
+	i.Lock()
+	defer i.Unlock()
+	i.stop = true
+	return
+}
+
 func (i *ServerInstance) Handshake(conn net.Conn) (net.Conn, error) {
 	if i.dKeyNfs == nil {
 		return nil, errors.New("uninitialized")