[client] Fix elapsed time calculation when machine is in sleep mode (#4140)

client/internal/lazyconn/activity/listener.go

@@ -48,7 +48,7 @@ func (d *Listener) ReadPackets() {
 		n, remoteAddr, err := d.conn.ReadFromUDP(make([]byte, 1))
 		if err != nil {
 			if d.isClosed.Load() {
-				d.peerCfg.Log.Debugf("exit from activity listener")
+				d.peerCfg.Log.Infof("exit from activity listener")
 			} else {
 				d.peerCfg.Log.Errorf("failed to read from activity listener: %s", err)
 			}
@@ -59,9 +59,11 @@ func (d *Listener) ReadPackets() {
 			d.peerCfg.Log.Warnf("received %d bytes from %s, too short", n, remoteAddr)
 			continue
 		}
+		d.peerCfg.Log.Infof("activity detected")
 		break
 	}
 
+	d.peerCfg.Log.Debugf("removing lazy endpoint: %s", d.endpoint.String())
 	if err := d.removeEndpoint(); err != nil {
 		d.peerCfg.Log.Errorf("failed to remove endpoint: %s", err)
 	}
@@ -71,7 +73,7 @@ func (d *Listener) ReadPackets() {
 }
 
 func (d *Listener) Close() {
-	d.peerCfg.Log.Infof("closing listener: %s", d.conn.LocalAddr().String())
+	d.peerCfg.Log.Infof("closing activity listener: %s", d.conn.LocalAddr().String())
 	d.isClosed.Store(true)
 
 	if err := d.conn.Close(); err != nil {
@@ -81,7 +83,6 @@ func (d *Listener) Close() {
 }
 
 func (d *Listener) removeEndpoint() error {
-	d.peerCfg.Log.Debugf("removing lazy endpoint: %s", d.endpoint.String())
 	return d.wgIface.RemovePeer(d.peerCfg.PublicKey)
 }
 

client/internal/lazyconn/inactivity/manager.go

@@ -8,6 +8,7 @@ import (
 	log "github.com/sirupsen/logrus"
 
 	"github.com/netbirdio/netbird/client/internal/lazyconn"
+	"github.com/netbirdio/netbird/monotime"
 )
 
 const (
@@ -18,7 +19,7 @@ const (
 )
 
 type WgInterface interface {
-	LastActivities() map[string]time.Time
+	LastActivities() map[string]monotime.Time
 }
 
 type Manager struct {
@@ -124,6 +125,7 @@ func (m *Manager) checkStats() (map[string]struct{}, error) {
 
 	idlePeers := make(map[string]struct{})
 
+	checkTime := time.Now()
 	for peerID, peerCfg := range m.interestedPeers {
 		lastActive, ok := lastActivities[peerID]
 		if !ok {
@@ -132,8 +134,9 @@ func (m *Manager) checkStats() (map[string]struct{}, error) {
 			continue
 		}
 
-		if time.Since(lastActive) > m.inactivityThreshold {
-			peerCfg.Log.Infof("peer is inactive since: %v", lastActive)
+		since := monotime.Since(lastActive)
+		if since > m.inactivityThreshold {
+			peerCfg.Log.Infof("peer is inactive since time: %s", checkTime.Add(-since).String())
 			idlePeers[peerID] = struct{}{}
 		}
 	}

client/internal/lazyconn/inactivity/manager_test.go

@@ -9,13 +9,14 @@ import (
 	"github.com/stretchr/testify/assert"
 
 	"github.com/netbirdio/netbird/client/internal/lazyconn"
+	"github.com/netbirdio/netbird/monotime"
 )
 
 type mockWgInterface struct {
-	lastActivities map[string]time.Time
+	lastActivities map[string]monotime.Time
 }
 
-func (m *mockWgInterface) LastActivities() map[string]time.Time {
+func (m *mockWgInterface) LastActivities() map[string]monotime.Time {
 	return m.lastActivities
 }
 
@@ -23,8 +24,8 @@ func TestPeerTriggersInactivity(t *testing.T) {
 	peerID := "peer1"
 
 	wgMock := &mockWgInterface{
-		lastActivities: map[string]time.Time{
-			peerID: time.Now().Add(-20 * time.Minute),
+		lastActivities: map[string]monotime.Time{
+			peerID: monotime.Time(int64(monotime.Now()) - int64(20*time.Minute)),
 		},
 	}
 
@@ -64,8 +65,8 @@ func TestPeerTriggersActivity(t *testing.T) {
 	peerID := "peer1"
 
 	wgMock := &mockWgInterface{
-		lastActivities: map[string]time.Time{
-			peerID: time.Now().Add(-5 * time.Minute),
+		lastActivities: map[string]monotime.Time{
+			peerID: monotime.Time(int64(monotime.Now()) - int64(5*time.Minute)),
 		},
 	}
 

client/internal/lazyconn/manager/manager.go

@@ -258,12 +258,13 @@ func (m *Manager) ActivatePeer(peerID string) (found bool) {
 		return false
 	}
 
+	cfg.Log.Infof("activate peer from inactive state by remote signal message")
+
 	if !m.activateSinglePeer(cfg, mp) {
 		return false
 	}
 
 	m.activateHAGroupPeers(cfg)
-
 	return true
 }
 
@@ -571,12 +572,12 @@ func (m *Manager) onPeerInactivityTimedOut(peerIDs map[string]struct{}) {
 		// this is blocking operation, potentially can be optimized
 		m.peerStore.PeerConnIdle(mp.peerCfg.PublicKey)
 
-		mp.peerCfg.Log.Infof("start activity monitor")
-
 		mp.expectedWatcher = watcherActivity
 
 		m.inactivityManager.RemovePeer(mp.peerCfg.PublicKey)
 
+		mp.peerCfg.Log.Infof("start activity monitor")
+
 		if err := m.activityManager.MonitorPeerActivity(*mp.peerCfg); err != nil {
 			mp.peerCfg.Log.Errorf("failed to create activity monitor: %v", err)
 			continue

client/internal/lazyconn/wgiface.go

@@ -6,11 +6,13 @@ import (
 	"time"
 
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+
+	"github.com/netbirdio/netbird/monotime"
 )
 
 type WGIface interface {
 	RemovePeer(peerKey string) error
 	UpdatePeer(peerKey string, allowedIps []netip.Prefix, keepAlive time.Duration, endpoint *net.UDPAddr, preSharedKey *wgtypes.Key) error
 	IsUserspaceBind() bool
-	LastActivities() map[string]time.Time
+	LastActivities() map[string]monotime.Time
 }