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package quic
import (
"slices"
"github.com/quic-go/quic-go/internal/ackhandler"
"github.com/quic-go/quic-go/internal/protocol"
"github.com/quic-go/quic-go/internal/wire"
"github.com/quic-go/quic-go/logging"
)
// ConvertFrame converts a wire.Frame into a logging.Frame.
// This makes it possible for external packages to access the frames.
// Furthermore, it removes the data slices from CRYPTO and STREAM frames.
func toLoggingFrame(frame wire.Frame) logging.Frame {
switch f := frame.(type) {
case *wire.AckFrame:
// We use a pool for ACK frames.
// Implementations of the tracer interface may hold on to frames, so we need to make a copy here.
return toLoggingAckFrame(f)
case *wire.CryptoFrame:
return &logging.CryptoFrame{
Offset: f.Offset,
Length: protocol.ByteCount(len(f.Data)),
}
case *wire.StreamFrame:
return &logging.StreamFrame{
StreamID: f.StreamID,
Offset: f.Offset,
Length: f.DataLen(),
Fin: f.Fin,
}
case *wire.DatagramFrame:
return &logging.DatagramFrame{
Length: logging.ByteCount(len(f.Data)),
}
default:
return logging.Frame(frame)
}
}
func toLoggingAckFrame(f *wire.AckFrame) *logging.AckFrame {
ack := &logging.AckFrame{
AckRanges: slices.Clone(f.AckRanges),
DelayTime: f.DelayTime,
ECNCE: f.ECNCE,
ECT0: f.ECT0,
ECT1: f.ECT1,
}
return ack
}
func (c *Conn) logLongHeaderPacket(p *longHeaderPacket, ecn protocol.ECN) {
// quic-go logging
if c.logger.Debug() {
p.header.Log(c.logger)
if p.ack != nil {
wire.LogFrame(c.logger, p.ack, true)
}
for _, frame := range p.frames {
wire.LogFrame(c.logger, frame.Frame, true)
}
for _, frame := range p.streamFrames {
wire.LogFrame(c.logger, frame.Frame, true)
}
}
// tracing
if c.tracer != nil && c.tracer.SentLongHeaderPacket != nil {
frames := make([]logging.Frame, 0, len(p.frames))
for _, f := range p.frames {
frames = append(frames, toLoggingFrame(f.Frame))
}
for _, f := range p.streamFrames {
frames = append(frames, toLoggingFrame(f.Frame))
}
var ack *logging.AckFrame
if p.ack != nil {
ack = toLoggingAckFrame(p.ack)
}
c.tracer.SentLongHeaderPacket(p.header, p.length, ecn, ack, frames)
}
}
func (c *Conn) logShortHeaderPacket(
destConnID protocol.ConnectionID,
ackFrame *wire.AckFrame,
frames []ackhandler.Frame,
streamFrames []ackhandler.StreamFrame,
pn protocol.PacketNumber,
pnLen protocol.PacketNumberLen,
kp protocol.KeyPhaseBit,
ecn protocol.ECN,
size protocol.ByteCount,
isCoalesced bool,
) {
if c.logger.Debug() && !isCoalesced {
c.logger.Debugf("-> Sending packet %d (%d bytes) for connection %s, 1-RTT (ECN: %s)", pn, size, c.logID, ecn)
}
// quic-go logging
if c.logger.Debug() {
wire.LogShortHeader(c.logger, destConnID, pn, pnLen, kp)
if ackFrame != nil {
wire.LogFrame(c.logger, ackFrame, true)
}
for _, f := range frames {
wire.LogFrame(c.logger, f.Frame, true)
}
for _, f := range streamFrames {
wire.LogFrame(c.logger, f.Frame, true)
}
}
// tracing
if c.tracer != nil && c.tracer.SentShortHeaderPacket != nil {
fs := make([]logging.Frame, 0, len(frames)+len(streamFrames))
for _, f := range frames {
fs = append(fs, toLoggingFrame(f.Frame))
}
for _, f := range streamFrames {
fs = append(fs, toLoggingFrame(f.Frame))
}
var ack *logging.AckFrame
if ackFrame != nil {
ack = toLoggingAckFrame(ackFrame)
}
c.tracer.SentShortHeaderPacket(
&logging.ShortHeader{DestConnectionID: destConnID, PacketNumber: pn, PacketNumberLen: pnLen, KeyPhase: kp},
size,
ecn,
ack,
fs,
)
}
}
func (c *Conn) logCoalescedPacket(packet *coalescedPacket, ecn protocol.ECN) {
if c.logger.Debug() {
// There's a short period between dropping both Initial and Handshake keys and completion of the handshake,
// during which we might call PackCoalescedPacket but just pack a short header packet.
if len(packet.longHdrPackets) == 0 && packet.shortHdrPacket != nil {
c.logShortHeaderPacket(
packet.shortHdrPacket.DestConnID,
packet.shortHdrPacket.Ack,
packet.shortHdrPacket.Frames,
packet.shortHdrPacket.StreamFrames,
packet.shortHdrPacket.PacketNumber,
packet.shortHdrPacket.PacketNumberLen,
packet.shortHdrPacket.KeyPhase,
ecn,
packet.shortHdrPacket.Length,
false,
)
return
}
if len(packet.longHdrPackets) > 1 {
c.logger.Debugf("-> Sending coalesced packet (%d parts, %d bytes) for connection %s", len(packet.longHdrPackets), packet.buffer.Len(), c.logID)
} else {
c.logger.Debugf("-> Sending packet %d (%d bytes) for connection %s, %s", packet.longHdrPackets[0].header.PacketNumber, packet.buffer.Len(), c.logID, packet.longHdrPackets[0].EncryptionLevel())
}
}
for _, p := range packet.longHdrPackets {
c.logLongHeaderPacket(p, ecn)
}
if p := packet.shortHdrPacket; p != nil {
c.logShortHeaderPacket(p.DestConnID, p.Ack, p.Frames, p.StreamFrames, p.PacketNumber, p.PacketNumberLen, p.KeyPhase, ecn, p.Length, true)
}
}
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