TUN-8243: Collect metrics on the number of QUIC frames sent/received

This commit also removed the server metrics that is no longer used

quic/conversion.go

@@ -7,17 +7,6 @@ import (
 	"github.com/quic-go/quic-go/logging"
 )
 
-func perspectiveString(p logging.Perspective) string {
-	switch p {
-	case logging.PerspectiveClient:
-		return "client"
-	case logging.PerspectiveServer:
-		return "server"
-	default:
-		return ""
-	}
-}
-
 // Helper to convert logging.ByteCount(alias for int64) to float64 used in prometheus
 func byteCountToPromCount(count logging.ByteCount) float64 {
 	return float64(count)

quic/metrics.go

@@ -1,6 +1,8 @@
 package quic
 
 import (
+	"reflect"
+	"strings"
 	"sync"
 
 	"github.com/prometheus/client_golang/prometheus"
@@ -16,10 +18,10 @@ var (
 	clientMetrics    = struct {
 		totalConnections  prometheus.Counter
 		closedConnections prometheus.Counter
-		sentPackets       *prometheus.CounterVec
+		sentFrames        *prometheus.CounterVec
 		sentBytes         *prometheus.CounterVec
-		receivePackets    *prometheus.CounterVec
+		receivedFrames    *prometheus.CounterVec
-		receiveBytes      *prometheus.CounterVec
+		receivedBytes     *prometheus.CounterVec
 		bufferedPackets   *prometheus.CounterVec
 		droppedPackets    *prometheus.CounterVec
 		lostPackets       *prometheus.CounterVec
@@ -28,43 +30,88 @@ var (
 		smoothedRTT       *prometheus.GaugeVec
 	}{
 		totalConnections: prometheus.NewCounter(
-			totalConnectionsOpts(logging.PerspectiveClient),
+			prometheus.CounterOpts{
+				Namespace: namespace,
+				Subsystem: "client",
+				Name:      "total_connections",
+				Help:      "Number of connections initiated",
+			},
 		),
 		closedConnections: prometheus.NewCounter(
-			closedConnectionsOpts(logging.PerspectiveClient),
+			prometheus.CounterOpts{
+				Namespace: namespace,
+				Subsystem: "client",
+				Name:      "closed_connections",
+				Help:      "Number of connections that has been closed",
+			},
 		),
-		sentPackets: prometheus.NewCounterVec(
+		sentFrames: prometheus.NewCounterVec(
-			sentPacketsOpts(logging.PerspectiveClient),
+			prometheus.CounterOpts{
-			clientConnLabels,
+				Namespace: namespace,
+				Subsystem: "client",
+				Name:      "sent_frames",
+				Help:      "Number of frames that have been sent through a connection",
+			},
+			append(clientConnLabels, "frame_type"),
 		),
 		sentBytes: prometheus.NewCounterVec(
-			sentBytesOpts(logging.PerspectiveClient),
+			prometheus.CounterOpts{
+				Namespace: namespace,
+				Subsystem: "client",
+				Name:      "sent_bytes",
+				Help:      "Number of bytes that have been sent through a connection",
+			},
 			clientConnLabels,
 		),
-		receivePackets: prometheus.NewCounterVec(
+		receivedFrames: prometheus.NewCounterVec(
-			receivePacketsOpts(logging.PerspectiveClient),
+			prometheus.CounterOpts{
-			clientConnLabels,
+				Namespace: namespace,
+				Subsystem: "client",
+				Name:      "received_frames",
+				Help:      "Number of frames that have been received through a connection",
+			},
+			append(clientConnLabels, "frame_type"),
 		),
-		receiveBytes: prometheus.NewCounterVec(
+		receivedBytes: prometheus.NewCounterVec(
-			receiveBytesOpts(logging.PerspectiveClient),
+			prometheus.CounterOpts{
+				Namespace: namespace,
+				Subsystem: "client",
+				Name:      "receive_bytes",
+				Help:      "Number of bytes that have been received through a connection",
+			},
 			clientConnLabels,
 		),
 		bufferedPackets: prometheus.NewCounterVec(
-			bufferedPacketsOpts(logging.PerspectiveClient),
+			prometheus.CounterOpts{
+				Namespace: namespace,
+				Subsystem: "client",
+				Name:      "buffered_packets",
+				Help:      "Number of bytes that have been buffered on a connection",
+			},
 			append(clientConnLabels, "packet_type"),
 		),
 		droppedPackets: prometheus.NewCounterVec(
-			droppedPacketsOpts(logging.PerspectiveClient),
+			prometheus.CounterOpts{
+				Namespace: namespace,
+				Subsystem: "client",
+				Name:      "dropped_packets",
+				Help:      "Number of bytes that have been dropped on a connection",
+			},
 			append(clientConnLabels, "packet_type", "reason"),
 		),
 		lostPackets: prometheus.NewCounterVec(
-			lostPacketsOpts(logging.PerspectiveClient),
+			prometheus.CounterOpts{
+				Namespace: namespace,
+				Subsystem: "client",
+				Name:      "lost_packets",
+				Help:      "Number of packets that have been lost from a connection",
+			},
 			append(clientConnLabels, "reason"),
 		),
 		minRTT: prometheus.NewGaugeVec(
 			prometheus.GaugeOpts{
 				Namespace: namespace,
-				Subsystem: perspectiveString(logging.PerspectiveClient),
+				Subsystem: "client",
 				Name:      "min_rtt",
 				Help:      "Lowest RTT measured on a connection in millisec",
 			},
@@ -73,7 +120,7 @@ var (
 		latestRTT: prometheus.NewGaugeVec(
 			prometheus.GaugeOpts{
 				Namespace: namespace,
-				Subsystem: perspectiveString(logging.PerspectiveClient),
+				Subsystem: "client",
 				Name:      "latest_rtt",
 				Help:      "Latest RTT measured on a connection",
 			},
@@ -82,188 +129,37 @@ var (
 		smoothedRTT: prometheus.NewGaugeVec(
 			prometheus.GaugeOpts{
 				Namespace: namespace,
-				Subsystem: perspectiveString(logging.PerspectiveClient),
+				Subsystem: "client",
 				Name:      "smoothed_rtt",
 				Help:      "Calculated smoothed RTT measured on a connection in millisec",
 			},
 			clientConnLabels,
 		),
 	}
-	// The server has many QUIC connections. Adding per connection label incurs high memory cost
+
-	serverMetrics = struct {
-		totalConnections  prometheus.Counter
-		closedConnections prometheus.Counter
-		sentPackets       prometheus.Counter
-		sentBytes         prometheus.Counter
-		receivePackets    prometheus.Counter
-		receiveBytes      prometheus.Counter
-		bufferedPackets   *prometheus.CounterVec
-		droppedPackets    *prometheus.CounterVec
-		lostPackets       *prometheus.CounterVec
-		rtt               prometheus.Histogram
-	}{
-		totalConnections: prometheus.NewCounter(
-			totalConnectionsOpts(logging.PerspectiveServer),
-		),
-		closedConnections: prometheus.NewCounter(
-			closedConnectionsOpts(logging.PerspectiveServer),
-		),
-		sentPackets: prometheus.NewCounter(
-			sentPacketsOpts(logging.PerspectiveServer),
-		),
-		sentBytes: prometheus.NewCounter(
-			sentBytesOpts(logging.PerspectiveServer),
-		),
-		receivePackets: prometheus.NewCounter(
-			receivePacketsOpts(logging.PerspectiveServer),
-		),
-		receiveBytes: prometheus.NewCounter(
-			receiveBytesOpts(logging.PerspectiveServer),
-		),
-		bufferedPackets: prometheus.NewCounterVec(
-			bufferedPacketsOpts(logging.PerspectiveServer),
-			[]string{"packet_type"},
-		),
-		droppedPackets: prometheus.NewCounterVec(
-			droppedPacketsOpts(logging.PerspectiveServer),
-			[]string{"packet_type", "reason"},
-		),
-		lostPackets: prometheus.NewCounterVec(
-			lostPacketsOpts(logging.PerspectiveServer),
-			[]string{"reason"},
-		),
-		rtt: prometheus.NewHistogram(
-			prometheus.HistogramOpts{
-				Namespace: namespace,
-				Subsystem: perspectiveString(logging.PerspectiveServer),
-				Name:      "rtt",
-				Buckets:   []float64{5, 10, 20, 30, 40, 50, 75, 100},
-			},
-		),
-	}
 	registerClient = sync.Once{}
-	registerServer = sync.Once{}
 
 	packetTooBigDropped = prometheus.NewCounter(prometheus.CounterOpts{
 		Namespace: namespace,
-		Subsystem: perspectiveString(logging.PerspectiveClient),
+		Subsystem: "client",
 		Name:      "packet_too_big_dropped",
 		Help:      "Count of packets received from origin that are too big to send to the edge and are dropped as a result",
 	})
 )
 
-// MetricsCollector abstracts the difference between client and server metrics from connTracer
-type MetricsCollector interface {
-	startedConnection()
-	closedConnection(err error)
-	sentPackets(logging.ByteCount)
-	receivedPackets(logging.ByteCount)
-	bufferedPackets(logging.PacketType)
-	droppedPackets(logging.PacketType, logging.ByteCount, logging.PacketDropReason)
-	lostPackets(logging.PacketLossReason)
-	updatedRTT(*logging.RTTStats)
-}
-
-func totalConnectionsOpts(p logging.Perspective) prometheus.CounterOpts {
-	var help string
-	if p == logging.PerspectiveClient {
-		help = "Number of connections initiated. For all quic metrics, client means the side initiating the connection"
-	} else {
-		help = "Number of connections accepted. For all quic metrics, server means the side accepting connections"
-	}
-	return prometheus.CounterOpts{
-		Namespace: namespace,
-		Subsystem: perspectiveString(p),
-		Name:      "total_connections",
-		Help:      help,
-	}
-}
-
-func closedConnectionsOpts(p logging.Perspective) prometheus.CounterOpts {
-	return prometheus.CounterOpts{
-		Namespace: namespace,
-		Subsystem: perspectiveString(p),
-		Name:      "closed_connections",
-		Help:      "Number of connections that has been closed",
-	}
-}
-
-func sentPacketsOpts(p logging.Perspective) prometheus.CounterOpts {
-	return prometheus.CounterOpts{
-		Namespace: namespace,
-		Subsystem: perspectiveString(p),
-		Name:      "sent_packets",
-		Help:      "Number of packets that have been sent through a connection",
-	}
-}
-
-func sentBytesOpts(p logging.Perspective) prometheus.CounterOpts {
-	return prometheus.CounterOpts{
-		Namespace: namespace,
-		Subsystem: perspectiveString(p),
-		Name:      "sent_bytes",
-		Help:      "Number of bytes that have been sent through a connection",
-	}
-}
-
-func receivePacketsOpts(p logging.Perspective) prometheus.CounterOpts {
-	return prometheus.CounterOpts{
-		Namespace: namespace,
-		Subsystem: perspectiveString(p),
-		Name:      "receive_packets",
-		Help:      "Number of packets that have been received through a connection",
-	}
-}
-
-func receiveBytesOpts(p logging.Perspective) prometheus.CounterOpts {
-	return prometheus.CounterOpts{
-		Namespace: namespace,
-		Subsystem: perspectiveString(p),
-		Name:      "receive_bytes",
-		Help:      "Number of bytes that have been received through a connection",
-	}
-}
-
-func bufferedPacketsOpts(p logging.Perspective) prometheus.CounterOpts {
-	return prometheus.CounterOpts{
-		Namespace: namespace,
-		Subsystem: perspectiveString(p),
-		Name:      "buffered_packets",
-		Help:      "Number of bytes that have been buffered on a connection",
-	}
-}
-
-func droppedPacketsOpts(p logging.Perspective) prometheus.CounterOpts {
-	return prometheus.CounterOpts{
-		Namespace: namespace,
-		Subsystem: perspectiveString(p),
-		Name:      "dropped_packets",
-		Help:      "Number of bytes that have been dropped on a connection",
-	}
-}
-
-func lostPacketsOpts(p logging.Perspective) prometheus.CounterOpts {
-	return prometheus.CounterOpts{
-		Namespace: namespace,
-		Subsystem: perspectiveString(p),
-		Name:      "lost_packets",
-		Help:      "Number of packets that have been lost from a connection",
-	}
-}
-
 type clientCollector struct {
 	index string
 }
 
-func newClientCollector(index uint8) MetricsCollector {
+func newClientCollector(index uint8) *clientCollector {
 	registerClient.Do(func() {
 		prometheus.MustRegister(
 			clientMetrics.totalConnections,
 			clientMetrics.closedConnections,
-			clientMetrics.sentPackets,
+			clientMetrics.sentFrames,
 			clientMetrics.sentBytes,
-			clientMetrics.receivePackets,
+			clientMetrics.receivedFrames,
-			clientMetrics.receiveBytes,
+			clientMetrics.receivedBytes,
 			clientMetrics.bufferedPackets,
 			clientMetrics.droppedPackets,
 			clientMetrics.lostPackets,
@@ -286,14 +182,12 @@ func (cc *clientCollector) closedConnection(err error) {
 	clientMetrics.closedConnections.Inc()
 }
 
-func (cc *clientCollector) sentPackets(size logging.ByteCount) {
+func (cc *clientCollector) sentPackets(size logging.ByteCount, frames []logging.Frame) {
-	clientMetrics.sentPackets.WithLabelValues(cc.index).Inc()
+	cc.collectPackets(size, frames, clientMetrics.sentFrames, clientMetrics.sentBytes)
-	clientMetrics.sentBytes.WithLabelValues(cc.index).Add(byteCountToPromCount(size))
 }
 
-func (cc *clientCollector) receivedPackets(size logging.ByteCount) {
+func (cc *clientCollector) receivedPackets(size logging.ByteCount, frames []logging.Frame) {
-	clientMetrics.receivePackets.WithLabelValues(cc.index).Inc()
+	cc.collectPackets(size, frames, clientMetrics.receivedFrames, clientMetrics.receivedBytes)
-	clientMetrics.receiveBytes.WithLabelValues(cc.index).Add(byteCountToPromCount(size))
 }
 
 func (cc *clientCollector) bufferedPackets(packetType logging.PacketType) {
@@ -318,63 +212,18 @@ func (cc *clientCollector) updatedRTT(rtt *logging.RTTStats) {
 	clientMetrics.smoothedRTT.WithLabelValues(cc.index).Set(durationToPromGauge(rtt.SmoothedRTT()))
 }
 
-type serverCollector struct{}
+func (cc *clientCollector) collectPackets(size logging.ByteCount, frames []logging.Frame, counter, bandwidth *prometheus.CounterVec) {
-
+	for _, frame := range frames {
-func newServiceCollector() MetricsCollector {
+		counter.WithLabelValues(cc.index, frameName(frame)).Inc()
-	registerServer.Do(func() {
+	}
-		prometheus.MustRegister(
+	bandwidth.WithLabelValues(cc.index).Add(byteCountToPromCount(size))
-			serverMetrics.totalConnections,
-			serverMetrics.closedConnections,
-			serverMetrics.sentPackets,
-			serverMetrics.sentBytes,
-			serverMetrics.receivePackets,
-			serverMetrics.receiveBytes,
-			serverMetrics.bufferedPackets,
-			serverMetrics.droppedPackets,
-			serverMetrics.lostPackets,
-			serverMetrics.rtt,
-		)
-	})
-	return &serverCollector{}
 }
 
-func (sc *serverCollector) startedConnection() {
+func frameName(frame logging.Frame) string {
-	serverMetrics.totalConnections.Inc()
+	if frame == nil {
-}
+		return "nil"
-
+	} else {
-func (sc *serverCollector) closedConnection(err error) {
+		name := reflect.TypeOf(frame).Elem().Name()
-	serverMetrics.closedConnections.Inc()
+		return strings.TrimSuffix(name, "Frame")
-}
-
-func (sc *serverCollector) sentPackets(size logging.ByteCount) {
-	serverMetrics.sentPackets.Inc()
-	serverMetrics.sentBytes.Add(byteCountToPromCount(size))
-}
-
-func (sc *serverCollector) receivedPackets(size logging.ByteCount) {
-	serverMetrics.receivePackets.Inc()
-	serverMetrics.receiveBytes.Add(byteCountToPromCount(size))
-}
-
-func (sc *serverCollector) bufferedPackets(packetType logging.PacketType) {
-	serverMetrics.bufferedPackets.WithLabelValues(packetTypeString(packetType)).Inc()
-}
-
-func (sc *serverCollector) droppedPackets(packetType logging.PacketType, size logging.ByteCount, reason logging.PacketDropReason) {
-	serverMetrics.droppedPackets.WithLabelValues(
-		packetTypeString(packetType),
-		packetDropReasonString(reason),
-	).Add(byteCountToPromCount(size))
-}
-
-func (sc *serverCollector) lostPackets(reason logging.PacketLossReason) {
-	serverMetrics.lostPackets.WithLabelValues(packetLossReasonString(reason)).Inc()
-}
-
-func (sc *serverCollector) updatedRTT(rtt *logging.RTTStats) {
-	latestRTT := rtt.LatestRTT()
-	// May return 0 if no valid updates have occurred
-	if latestRTT > 0 {
-		serverMetrics.rtt.Observe(durationToPromGauge(latestRTT))
 	}
 }

quic/tracing.go

@@ -3,7 +3,6 @@ package quic
 import (
 	"context"
 	"net"
-	"time"
 
 	"github.com/quic-go/quic-go/logging"
 	"github.com/rs/zerolog"
@@ -16,8 +15,6 @@ type tracer struct {
 }
 
 type tracerConfig struct {
-	isClient bool
-	// Only client has an index
 	index uint8
 }
 
@@ -25,67 +22,36 @@ func NewClientTracer(logger *zerolog.Logger, index uint8) func(context.Context,
 	t := &tracer{
 		logger: logger,
 		config: &tracerConfig{
-			isClient: true,
+			index: index,
-			index:    index,
 		},
 	}
 	return t.TracerForConnection
 }
 
-func NewServerTracer(logger *zerolog.Logger) *logging.Tracer {
-	return &logging.Tracer{
-		SentPacket:                   func(net.Addr, *logging.Header, logging.ByteCount, []logging.Frame) {},
-		SentVersionNegotiationPacket: func(_ net.Addr, dest, src logging.ArbitraryLenConnectionID, _ []logging.VersionNumber) {},
-		DroppedPacket:                func(net.Addr, logging.PacketType, logging.ByteCount, logging.PacketDropReason) {},
-	}
-}
-
 func (t *tracer) TracerForConnection(_ctx context.Context, _p logging.Perspective, _odcid logging.ConnectionID) *logging.ConnectionTracer {
-	if t.config.isClient {
+	return newConnTracer(newClientCollector(t.config.index))
-		return newConnTracer(newClientCollector(t.config.index))
-	}
-	return newConnTracer(newServiceCollector())
 }
 
 // connTracer collects connection level metrics
 type connTracer struct {
-	metricsCollector MetricsCollector
+	metricsCollector *clientCollector
 }
 
-func newConnTracer(metricsCollector MetricsCollector) *logging.ConnectionTracer {
+func newConnTracer(metricsCollector *clientCollector) *logging.ConnectionTracer {
 	tracer := connTracer{
 		metricsCollector: metricsCollector,
 	}
 	return &logging.ConnectionTracer{
-		StartedConnection:                tracer.StartedConnection,
+		StartedConnection:         tracer.StartedConnection,
-		NegotiatedVersion:                tracer.NegotiatedVersion,
+		ClosedConnection:          tracer.ClosedConnection,
-		ClosedConnection:                 tracer.ClosedConnection,
+		SentLongHeaderPacket:      tracer.SentLongHeaderPacket,
-		SentTransportParameters:          tracer.SentTransportParameters,
+		SentShortHeaderPacket:     tracer.SentShortHeaderPacket,
-		ReceivedTransportParameters:      tracer.ReceivedTransportParameters,
+		ReceivedLongHeaderPacket:  tracer.ReceivedLongHeaderPacket,
-		RestoredTransportParameters:      tracer.RestoredTransportParameters,
+		ReceivedShortHeaderPacket: tracer.ReceivedShortHeaderPacket,
-		SentLongHeaderPacket:             tracer.SentLongHeaderPacket,
+		BufferedPacket:            tracer.BufferedPacket,
-		SentShortHeaderPacket:            tracer.SentShortHeaderPacket,
+		DroppedPacket:             tracer.DroppedPacket,
-		ReceivedVersionNegotiationPacket: tracer.ReceivedVersionNegotiationPacket,
+		UpdatedMetrics:            tracer.UpdatedMetrics,
-		ReceivedRetry:                    tracer.ReceivedRetry,
+		LostPacket:                tracer.LostPacket,
-		ReceivedLongHeaderPacket:         tracer.ReceivedLongHeaderPacket,
-		ReceivedShortHeaderPacket:        tracer.ReceivedShortHeaderPacket,
-		BufferedPacket:                   tracer.BufferedPacket,
-		DroppedPacket:                    tracer.DroppedPacket,
-		UpdatedMetrics:                   tracer.UpdatedMetrics,
-		AcknowledgedPacket:               tracer.AcknowledgedPacket,
-		LostPacket:                       tracer.LostPacket,
-		UpdatedCongestionState:           tracer.UpdatedCongestionState,
-		UpdatedPTOCount:                  tracer.UpdatedPTOCount,
-		UpdatedKeyFromTLS:                tracer.UpdatedKeyFromTLS,
-		UpdatedKey:                       tracer.UpdatedKey,
-		DroppedEncryptionLevel:           tracer.DroppedEncryptionLevel,
-		DroppedKey:                       tracer.DroppedKey,
-		SetLossTimer:                     tracer.SetLossTimer,
-		LossTimerExpired:                 tracer.LossTimerExpired,
-		LossTimerCanceled:                tracer.LossTimerCanceled,
-		ECNStateUpdated:                  tracer.ECNStateUpdated,
-		Close:                            tracer.Close,
-		Debug:                            tracer.Debug,
 	}
 }
 
@@ -97,14 +63,6 @@ func (ct *connTracer) ClosedConnection(err error) {
 	ct.metricsCollector.closedConnection(err)
 }
 
-func (ct *connTracer) SentPacket(hdr *logging.ExtendedHeader, packetSize logging.ByteCount, ack *logging.AckFrame, frames []logging.Frame) {
-	ct.metricsCollector.sentPackets(packetSize)
-}
-
-func (ct *connTracer) ReceivedPacket(hdr *logging.ExtendedHeader, size logging.ByteCount, frames []logging.Frame) {
-	ct.metricsCollector.receivedPackets(size)
-}
-
 func (ct *connTracer) BufferedPacket(pt logging.PacketType, size logging.ByteCount) {
 	ct.metricsCollector.bufferedPackets(pt)
 }
@@ -121,74 +79,20 @@ func (ct *connTracer) UpdatedMetrics(rttStats *logging.RTTStats, cwnd, bytesInFl
 	ct.metricsCollector.updatedRTT(rttStats)
 }
 
-func (ct *connTracer) NegotiatedVersion(chosen logging.VersionNumber, clientVersions, serverVersions []logging.VersionNumber) {
-}
-
-func (ct *connTracer) SentTransportParameters(parameters *logging.TransportParameters) {
-}
-
-func (ct *connTracer) ReceivedTransportParameters(parameters *logging.TransportParameters) {
-}
-
-func (ct *connTracer) RestoredTransportParameters(parameters *logging.TransportParameters) {
-}
-
 func (ct *connTracer) SentLongHeaderPacket(hdr *logging.ExtendedHeader, size logging.ByteCount, ecn logging.ECN, ack *logging.AckFrame, frames []logging.Frame) {
+	ct.metricsCollector.sentPackets(size, frames)
 }
 
 func (ct *connTracer) SentShortHeaderPacket(hdr *logging.ShortHeader, size logging.ByteCount, ecn logging.ECN, ack *logging.AckFrame, frames []logging.Frame) {
-}
+	ct.metricsCollector.sentPackets(size, frames)
-
-func (ct *connTracer) ReceivedVersionNegotiationPacket(dest, src logging.ArbitraryLenConnectionID, _ []logging.VersionNumber) {
-}
-
-func (ct *connTracer) ReceivedRetry(header *logging.Header) {
 }
 
 func (ct *connTracer) ReceivedLongHeaderPacket(hdr *logging.ExtendedHeader, size logging.ByteCount, ecn logging.ECN, frames []logging.Frame) {
+	ct.metricsCollector.receivedPackets(size, frames)
 }
 
 func (ct *connTracer) ReceivedShortHeaderPacket(hdr *logging.ShortHeader, size logging.ByteCount, ecn logging.ECN, frames []logging.Frame) {
-}
+	ct.metricsCollector.receivedPackets(size, frames)
-
-func (ct *connTracer) AcknowledgedPacket(level logging.EncryptionLevel, number logging.PacketNumber) {
-}
-
-func (ct *connTracer) UpdatedCongestionState(state logging.CongestionState) {
-}
-
-func (ct *connTracer) UpdatedPTOCount(value uint32) {
-}
-
-func (ct *connTracer) UpdatedKeyFromTLS(level logging.EncryptionLevel, perspective logging.Perspective) {
-}
-
-func (ct *connTracer) UpdatedKey(generation logging.KeyPhase, remote bool) {
-}
-
-func (ct *connTracer) DroppedEncryptionLevel(level logging.EncryptionLevel) {
-}
-
-func (ct *connTracer) DroppedKey(generation logging.KeyPhase) {
-}
-
-func (ct *connTracer) SetLossTimer(timerType logging.TimerType, level logging.EncryptionLevel, time time.Time) {
-}
-
-func (ct *connTracer) LossTimerExpired(timerType logging.TimerType, level logging.EncryptionLevel) {
-}
-
-func (ct *connTracer) LossTimerCanceled() {
-}
-
-func (ct *connTracer) ECNStateUpdated(state logging.ECNState, trigger logging.ECNStateTrigger) {
-
-}
-
-func (ct *connTracer) Close() {
-}
-
-func (ct *connTracer) Debug(name, msg string) {
 }
 
 type quicLogger struct {