chore(deps): update module github.com/quic-go/quic-go to v0.56.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
github.com/quic-go/quic-go	v0.55.0 -> v0.56.0

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Release Notes

quic-go/quic-go (github.com/quic-go/quic-go)

v0.56.0

Compare Source

This release introduces qlog support for HTTP/3 (#​5367, #​5372, #​5374, #​5375, #​5376, #​5381, #​5383).

For this, we completely changed how connection tracing works. Instead of a general-purpose logging.ConnectionTracer (which we removed entirely), we now have a qlog-specific tracer (#​5356, #​5417). quic-go users can now implement their own qlog events.

It also removes the Prometheus-based metrics collection. Please comment on the tracking issue (#​5294) if you rely on metrics and are interested in seeing metrics brought back in a future release.

Notable Changes

• replaced the unmaintained gojay with a custom, performance-optimized JSON encoder (#​5353, #​5371)
• quicvarint: improved panic message for numbers larger than 2^62 (#​5410)

Behind the Scenes

Go 1.25 introduced support for testing concurrent code using testing/synctest. We've been working on transitioning tests to use synctest (#​5357, #​5391, #​5393, #​5397, #​5398, #​5403, #​5414, #​5415), using @​MarcoPolo's simnet package to simulate a network in memory.

Using synctest makes test execution more reliable (reducing flakiness). The use of a synthetic clock leads to a massive speedup; the execution time of some integration tests was reduced from 20s to less than 1ms. The work will continue for the next release (see tracking issue: #​5386).

Changelog

• qlog: implement a minimal jsontext-like JSON encoder by @​marten-seemann in #​5353
• ci: remove 386 (32 bit x86) by @​MarcoPolo in #​5352
• use synctest in more connection tests by @​marten-seemann in #​5357
• qlog: split serializiation and event definitions, remove logging abstraction by @​marten-seemann in #​5356
• qlogwriter: implement the draft-12 trace header by @​marten-seemann in #​5360
• qlogwriter: add support for event_schemas in the trace header by @​marten-seemann in #​5361
• qlogwriter: pass the event time to Event.Encode by @​marten-seemann in #​5362
• ackhandler: fix qlogging of alarm timer expiration time by @​marten-seemann in #​5363
• qlog: privatize Encode functions of non-Event structs by @​marten-seemann in #​5364
• fix qlogging of the short header payload length by @​marten-seemann in #​5365
• ci: include OS and Go version in Codecov test report upload by @​marten-seemann in #​5370
• http3: add basic server-side qlog support by @​marten-seemann in #​5367
• jsontext: add support for encoding null by @​marten-seemann in #​5371
• qlog: use PathEndpointInfo in connection_started by @​marten-seemann in #​5368
• http3: fix qlog encoding of frame_parsed and frame_created events by @​marten-seemann in #​5372
• http3: add basic client-side qlog support by @​marten-seemann in #​5374
• readme: update oss-fuzz link by @​kriztalz in #​5377
• http3: qlog sent and received GOAWAY frames by @​marten-seemann in #​5376
• http3: qlog sent and received DATAGRAMs by @​marten-seemann in #​5375
• http3: move qlogging of frames into the frame parser by @​marten-seemann in #​5378
• http3: qlog sent and received SETTINGS frames by @​marten-seemann in #​5379
• http3: qlog the frame length and payload length of parsed frames by @​marten-seemann in #​5380
• http3: qlog reserved, unsupported and unknown frames by @​marten-seemann in #​5381
• http3: add the qlog event schema to trace header by @​marten-seemann in #​5383
• use default RTT (100ms) for 0-RTT if no prior estimate by @​marten-seemann in #​5388
• congestion: avoid overflows when calculating pacer budget by @​marten-seemann in #​5390
• add simnet package to simulate a net.PacketConn in memory by @​marten-seemann in #​5385
• use synctest for transport tests by @​marten-seemann in #​5391
• use simnet in CONNECTION_CLOSE retransmission test by @​marten-seemann in #​5395
• use synctest for the packet drop test by @​marten-seemann in #​5393
• use synctest for the handshake drop test by @​marten-seemann in #​5397
• use synctest for the datagram test by @​marten-seemann in #​5398
• use synctest for the timeout tests by @​marten-seemann in #​5403
• fix flaky TestConnectionUnpackFailureDropped by @​Copilot in #​5382
• fix flaky TestServerTransportClose by @​Copilot in #​5407
• ci: use gcassert to check that quicvarint.Len is inlined by @​marten-seemann in #​5409
• quicvarint: improve panic message for numbers larger 2^62 by @​marten-seemann in #​5410
• ci: bump actions/upload-artifact from 4 to 5 by @​dependabot[bot] in #​5411
• ci: update golangci-lint to v2.6.0 by @​marten-seemann in #​5412
• qlog: rename owner to initiator by @​marten-seemann in #​5416
• use synctest for the stateless reset tests by @​marten-seemann in #​5415
• ackhandler: fix qlogging of RTT values by @​marten-seemann in #​5418
• qlog: rework the ConnectionClosed event by @​marten-seemann in #​5417
• qlog: split the PTO count updates ouf of the MetricsUpdated event by @​marten-seemann in #​5421

New Contributors

• @​kriztalz made their first contribution in #​5377
• @​Copilot made their first contribution in #​5382

Full Changelog: quic-go/quic-go@v0.55.0...v0.56.0

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