Bumps quic-go to v0.59.1 (chungthuang fork rebased from upstream v0.45 onto
v0.59.1). Upstream removed the `logging` package and replaced its
callback-based ConnectionTracer with the structured `qlog`/`qlogwriter` event
API, which required migrating cloudflared's QUIC metrics collection.
Migrations:
- quic/tracing.go: connTracer no longer fills a logging.ConnectionTracer
callback struct. It implements qlogwriter.Trace + qlogwriter.Recorder and
dispatches qlog events (PacketSent, PacketReceived, MetricsUpdated, ...) to
the collector through RecordEvent. NewClientTracer now returns a function
compatible with quic.Config.Tracer.
- quic/metrics.go: collector methods take qlog types (qlog.Frame,
qlog.PacketType, qlog.MetricsUpdated, ...) and plain int64 in place of the
removed logging.ByteCount/Frame/RTTStats/TransportParameters.
- quic/conversion.go: PacketType, PacketDropReason and PacketLossReason are
strings upstream rather than numeric iotas, so the converters become
pass-through allowlists. CongestionState is also a string;
congestionStateToFloat maps it back to the numeric gauge values cloudflared
exports.
- quic.Connection/quic.Stream became *quic.Conn/*quic.Stream; updated
ConnWithCloser, SafeStreamCloser and the connection package accordingly.
Tests and generated mocks (mocks/mock_quic_connection.go) were adapted to
the new pointer-based API.
Closes TUN-10557
To help accommodate web browser interactions with websockets, when a
streaming logs session is requested for the same actor while already
serving a session for that user in a separate request, the original
request will be closed and the new request start streaming logs
instead. This should help with rogue sessions holding on for too long
with no client on the other side (before idle timeout or connection
close).