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fill in empty placeholder functions for quic tracer

The quic tracer that calls into Lua is not fully implemented yet. It should be very straight forward to complete the missing lines.

pan-lua/extra/stats.go

Lines 46 to 92 in aca0127

func (amct *AutoMultiConnectionTracer) NegotiatedVersion(chosen logging.VersionNumber, clientVersions, serverVersions []logging.VersionNumber) {
}
func (amct *AutoMultiConnectionTracer) ClosedConnection(error) {}
func (amct *AutoMultiConnectionTracer) SentTransportParameters(*logging.TransportParameters) {}
func (amct *AutoMultiConnectionTracer) ReceivedTransportParameters(*logging.TransportParameters) {}
func (amct *AutoMultiConnectionTracer) RestoredTransportParameters(parameters *logging.TransportParameters) {
}
func (amct *AutoMultiConnectionTracer) SentLongHeaderPacket(extendedHeader *logging.ExtendedHeader, count logging.ByteCount, ecn logging.ECN, ackframe *logging.AckFrame, frames []logging.Frame) {
amct.mct.SentPacket(amct.local, amct.remote, extendedHeader, count, ackframe, frames)
}
func (amct *AutoMultiConnectionTracer) SentShortHeaderPacket(*logging.ShortHeader, logging.ByteCount, logging.ECN, *logging.AckFrame, []logging.Frame) {
}
func (amct *AutoMultiConnectionTracer) ReceivedVersionNegotiationPacket(dest, src logging.ArbitraryLenConnectionID, _ []logging.VersionNumber) {
}
func (amct *AutoMultiConnectionTracer) ReceivedRetry(*logging.Header) {}
func (amct *AutoMultiConnectionTracer) ReceivedLongHeaderPacket(*logging.ExtendedHeader, logging.ByteCount, logging.ECN, []logging.Frame) {
}
func (amct *AutoMultiConnectionTracer) ReceivedShortHeaderPacket(*logging.ShortHeader, logging.ByteCount, logging.ECN, []logging.Frame) {
}
func (amct *AutoMultiConnectionTracer) BufferedPacket(logging.PacketType, logging.ByteCount) {}
func (amct *AutoMultiConnectionTracer) DroppedPacket(logging.PacketType, logging.PacketNumber, logging.ByteCount, logging.PacketDropReason) {
}
func (amct *AutoMultiConnectionTracer) UpdatedMetrics(rttStats *logging.RTTStats, cwnd, bytesInFlight logging.ByteCount, packetsInFlight int) {
amct.mct.UpdatedMetrics(amct.local, amct.remote, NewRTTStats(rttStats), cwnd, bytesInFlight, packetsInFlight)
}
func (amct *AutoMultiConnectionTracer) AcknowledgedPacket(logging.EncryptionLevel, logging.PacketNumber) {
}
func (amct *AutoMultiConnectionTracer) LostPacket(logging.EncryptionLevel, logging.PacketNumber, logging.PacketLossReason) {
}
func (amct *AutoMultiConnectionTracer) UpdatedCongestionState(logging.CongestionState) {}
func (amct *AutoMultiConnectionTracer) UpdatedPTOCount(value uint32) {}
func (amct *AutoMultiConnectionTracer) UpdatedKeyFromTLS(logging.EncryptionLevel, logging.Perspective) {
}
func (amct *AutoMultiConnectionTracer) UpdatedKey(generation logging.KeyPhase, remote bool) {}
func (amct *AutoMultiConnectionTracer) DroppedEncryptionLevel(logging.EncryptionLevel) {}
func (amct *AutoMultiConnectionTracer) DroppedKey(generation logging.KeyPhase) {}
func (amct *AutoMultiConnectionTracer) SetLossTimer(logging.TimerType, logging.EncryptionLevel, time.Time) {
}
func (amct *AutoMultiConnectionTracer) LossTimerExpired(logging.TimerType, logging.EncryptionLevel) {}
func (amct *AutoMultiConnectionTracer) LossTimerCanceled() {}
func (amct *AutoMultiConnectionTracer) ECNStateUpdated(state logging.ECNState, trigger logging.ECNStateTrigger) {
}
func (amct *AutoMultiConnectionTracer) ChoseALPN(protocol string) {}
func (amct *AutoMultiConnectionTracer) Close() {}
func (amct *AutoMultiConnectionTracer) Debug(name, msg string) {}

As it currently stands, only

  • StartedConnection
  • UpdatedMetrics
  • SentLongHeaderPacket

are actually implemented.

Note that there is also a performance tradeoff here. Functions that remain un-implemented will also not get called as part of a traced quic connection, which may result in better performance. Perhaps there is a way to dynamically decide which callbacks to include and which to leave out, but this may require some refactoring

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