v1.69.0

Release Summary

• feat(s2n-quic-dc): throttle repeated successful handshakes.
• feat(s2n-quic): Allow creating server names in const contexts.
• opt(s2n-quic-dc): only read-lock once in happy path.
• feat(s2n-quic): Expose &dyn Error for TLS handshake failures in events.
• feat(s2n-quic-dc): Add events measuring write lock latency.
• Implement s2n-quic-dc-metrics crate to emit metrics for s2n-quic-dc.

What's Changed

• feat(s2n-quic-dc): throttle repeated successful handshakes by @Mark-Simulacrum in #2845
• tests: Include integ test Message representation in ring buffer tests by @boquan-fang in #2852
• Expose static server name constructor by @Mark-Simulacrum in #2865
• opt(s2n-quic-dc): only read-lock once in happy path by @Mark-Simulacrum in #2867
• Expose TLS error to Subscribers using on_tls_handshake_failed by @Mark-Simulacrum in #2855
• chore: add xquic back to CI by @boquan-fang in #2868
• feat(s2n-quic-dc): Reuse handshakes across application processes by @mehnazyunus in #2854
• feat(s2n-quic-dc): Add events measuring write lock latency by @Mark-Simulacrum in #2869
• feat(s2n-quic-tests): implement a blocklist for test events by @boquan-fang in #2872
• chore: Clippy stuff by @maddeleine in #2879
• refactor(s2n-quic-dc): disable restart test on MacOS by @boquan-fang in #2839
• test(s2n-quic-dc): shared caches tests by @mehnazyunus in #2876
• fix(s2n-quic-dc): support ipv6 control sockets by @camshaft in #2871
• ci: GH release notes config by @dougch in #2880
• ci: Add a conv. commit lint action+config by @dougch in #2881
• fix(ci): copyright check improvement by @boquan-fang in #2890
• feat(s2n-quic-dc): implement metrics for s2n-quic-dc by @boquan-fang in #2884
• chore: s2n-quic 1.69.0 release by @boquan-fang in #2891

Full Changelog: v1.68.0...v1.69.0

v1.68.0

Release Summary

• Add packet encoding and decoding for packets sent over Unix domain sockets. This is required for reusing dcQUIC handshakes between application processes.
• Creates a sender and receiver for Unix domain sockets. This handles a message along with a file descriptor as ancillary data.

What's Changed

• feat(s2n-quic-dc): Add Unix socket packet encoding/decoding by @mehnazyunus in #2840
• refactor(s2n-quic-rustls): replace deprecated rustls-pemfile with rustls-pki-types by @junkurihara in #2847
• chore: fix group in CODEOWNERS by @dougch in #2848
• chore(ci): allow triage users to start quic-attack by @dougch in #2843
• feat(s2n-quic-dc): Add Unix domain socket sender/receiver by @mehnazyunus in #2842
• chore: scope permissions down for one GHA by @dougch in #2849
• ci(dhat): upload dhat artifacts regardless of steps outcome by @boquan-fang in #2850
• chore: s2n-quic 1.68.0 release by @boquan-fang in #2853

Full Changelog: v1.67.0...v1.68.0

v1.67.0

Release for Oct 8 2025

What's Changed

• refactor(s2n-quic-tests): add test annotation to endpoint_limits_close_test by @boquan-fang in #2816
• refactor(s2n-events): Move OutputMode into OutputConfig by @goatgoose in #2803
• opt(s2n-quic-dc): clamp TCP server concurrency by @Mark-Simulacrum in #2827
• fix: Change MTU test setup so it isn't slow by @maddeleine in #2828
• opt(s2n-quic-dc): Further tweak TCP acceptor concurrency by @Mark-Simulacrum in #2829
• feat(s2n-events): Add config option to generate C API by @goatgoose in #2818
• fix(s2n-quic-dc): send connection close frames with pruned streams by @camshaft in #2831
• feat(s2n-quic-dc): add packet-level events by @camshaft in #2832
• refactor(s2n-quic-dc): Add trait for TCP WorkerState poll behavior by @mehnazyunus in #2836

New Contributors

• @github-actions[bot] made their first contribution in #2822
• @mehnazyunus made their first contribution in #2836

Full Changelog: v1.66.0...v1.67.0

v1.66.0

Release Summary

• s2n-quic server can choose to immediately close the connection during handshake, once the user defined limiter requests such closing.

What's Changed

• fix(s2n-events): Fix warning when no nominal counters are defined by @goatgoose in #2811
• feat(s2n-quic-transport): close connection during handshake by @boquan-fang in #2792
• chore: s2n-quic 1.66.0 release by @boquan-fang in #2815

Full Changelog: v1.65...v1.66.0

v1.65.0

Summary

• feat(s2n-quic-dc): expose acceptor runtime
• feat(s2n-quic-dc): Track stream write buffer allocations
• opt(s2n-quic-dc): Use RwLock for id/peer maps
• Fixed bug that caused a hang on Windows platforms

What's Changed

• feat(s2n-quic-dc): Track stream write buffer allocations by @Mark-Simulacrum in #2779
• ci(clippy): create a clippy bot by @boquan-fang in #2782
• test(s2n-quic-dc): cap fuzz_test request size if that is too large by @boquan-fang in #2783
• feat(s2n-quic-dc): Add metric for improving decrypt performance by @Mark-Simulacrum in #2785
• build(deps): update hashbrown requirement from 0.15 to 0.16 by @dependabot[bot] in #2787
• ci: Fixes typo in metrics feature by @maddeleine in #2788
• refactor(s2n-quic-events): Rename s2n-quic-events to s2n-events by @goatgoose in #2780
• build(deps): bump aws-actions/configure-aws-credentials from 4.3.1 to 5.0.0 by @dependabot[bot] in #2791
• build(deps): bump actions/setup-python from 5 to 6 by @dependabot[bot] in #2790
• Expose the acceptor runtime by @Mark-Simulacrum in #2778
• refactor(s2n-events): Move s2n-quic event generation program out of s2n-events by @goatgoose in #2789
• docs(s2n-events): Update s2n-events docs with generate script info by @goatgoose in #2797
• docs(s2n-events): Fix event-generator readme path by @goatgoose in #2798
• build(CI): install cross from the latest commit by @boquan-fang in #2804
• chore: update MSRV to 1.84.0 and update checkers version by @boquan-fang in #2800
• opt(s2n-quic-dc): Use RwLock for id/peer maps by @Mark-Simulacrum in #2799
• test(s2n-quic-dc): implement tokio stream tests for dcQUIC by @boquan-fang in #2772
• test(s2n-quic-dc): add s2n-quic-dc tests for checking size and endpoint creation without tokio runtime by @boquan-fang in #2807
• bug: Fixes bug causing a hang on Windows by @maddeleine in #2808
• test(s2n-events): Generate test events system by @goatgoose in #2795
• chore: release v1.65.0 by @maddeleine in #2810

Full Changelog: v1.64.0...v1.65

v1.64.0

Release Summary

• Adds configurable percentage-based random jitter to Probe Timeout (PTO) calculations to prevent synchronized timeouts across multiple connections and reduce network congestion. Users can now configure jitter between 0-50% of the base PTO period, with 0% maintaining current RFC 9002 compliant behavior.
• Sets the default PTO jitter percentage for s2n-quic-dc to 33%.

What's Changed

• build(deps): bump aws-actions/configure-aws-credentials from 4.2.1 to 4.3.1 by @dependabot[bot] in #2740
• build(deps): bump docker/login-action from 3.4.0 to 3.5.0 by @dependabot[bot] in #2739
• feat(s2n-quic-dc): implement dcQUIC client Tokio Builder by @boquan-fang in #2741
• build(deps): bump actions/download-artifact from 4 to 5 by @dependabot[bot] in #2742
• feat(s2n-quic-dc): implement server tokio builder by @boquan-fang in #2744
• refactor(s2n-quic-dc): use map getter method to replace AsRef for Handshake trait by @boquan-fang in #2746
• fix(s2n-quic-dc): route secret control packets for UDP streams by @camshaft in #2747
• fix: clippy lint updates for rust version 1.89.0 by @jouho in #2750
• build(deps): bump actions/checkout from 4 to 5 by @dependabot[bot] in #2751
• feat(s2n-quic-dc): implement dcQUIC's server, client, and io providers by @boquan-fang in #2752
• feat(s2n-quic-dc): implement dcQUIC control by @boquan-fang in #2755
• opt(s2n-quic-dc): skip epoll registration in happy path by @Mark-Simulacrum in #2754
• ci: reduce false alarms for ActionCIFailure by @lrstewart in #2758
• feat(s2n-quic): configurable PTO jitter by @WesleyRosenblum in #2756
• feat(s2n-quic-dc): set default PTO jitter to 33% by @WesleyRosenblum in #2771
• ci: add interop retries by @lrstewart in #2769
• fix(s2n-quic-dc): adjust trait bounds for providers by @camshaft in #2774
• refactor(s2n-quic-dc): configurable server_name option by @boquan-fang in #2775
• chore: release v1.64.0 by @boquan-fang in #2776

Full Changelog: v1.63.0...v1.64.0

v1.63.0

Release Summary

feat(s2n-quic-core) TLS offloading: Adds unstable feature to move TLS operations out of the main event loop.

What's Changed

• ci: remove exceptions for clippy by @WesleyRosenblum in #2726
• ci: temporarily disable neqo by @CarolYeh910 in #2724
• fix(s2n-quic-dc): include ipv6 header length in MAX_TOTAL_IPV6 payload length by @boquan-fang in #2727
• ci: document how to manually run the codebuild jobs by @lrstewart in #2729
• fix(typo): fix a typo in codebuild.yml by @boquan-fang in #2733
• build(deps): update criterion requirement from 0.6 to 0.7 by @dependabot[bot] in #2731
• refactor(ci): consolidate clippy checks into one job by @boquan-fang in #2695
• feat(s2n-quic-core) TLS offloading by @maddeleine in #2721
• Chore: Release v1.63.0 by @maddeleine in #2737

Full Changelog: v1.62.0...v1.63.0

Release v1.62.0

Release Summary

• feat(s2n-quic): Allow inspecting TLS session information for failed handshakes
• feat(s2n-quic-dc): Metrics can now emit how much time that the lock in cleaner takes. That metrics is important to measure handshake performance.
• fix(s2n-quic-dc): Fix incorrectly emitted error metrics for successful connects

What's Changed

• ci(fix): resolve flakiness in upd::fuzz_test by @boquan-fang in #2689
• build(deps): update lru requirement from 0.15 to 0.16 by @dependabot[bot] in #2693
• build(deps): update indicatif requirement from 0.17 to 0.18 by @dependabot[bot] in #2696
• ci(fix): pin nightly-1.86.0 for udeps fix by @boquan-fang in #2698
• build(deps): update toml requirement from 0.8 to 0.9 by @dependabot[bot] in #2702
• test(s2n-quic): server handle conn migration with zero-length cid by @boquan-fang in #2697
• feat(s2n-quic): Emit event on TLS handshake failure by @Mark-Simulacrum in #2701
• ci: Adds github action to trigger codebuild job for quic-attack by @maddeleine in #2707
• build(deps): update socket2 to v0.6.0 by @boquan-fang in #2700
• doc(README): add minimun supported kernel version section by @boquan-fang in #2709
• feat(s2n-quic-dc): Add cleaner duration metrics by @Mark-Simulacrum in #2708
• fix(ci): install cmake to compile quiche on cargotiming job by @boquan-fang in #2704
• ci: Migrate Duvet GitHub Action to duvet-action repo by @johubertj in #2712
• ci: require write permissions for CodeBuild by @CarolYeh910 in #2713
• refactor(s2n-quic-sim): avoid JS precision loss rounding s2n-quic-sim seeds by @Mark-Simulacrum in #2718
• fix(s2n-quic-dc): fix emitting ABORTED metric for successful connects by @Mark-Simulacrum in #2719
• refactor(s2n-quic): move tests to s2n-quic-tests by @WesleyRosenblum in #2716
• chore: release v1.62.0 by @CarolYeh910 in #2720

New Contributors

• @johubertj made their first contribution in #2712

Full Changelog: v1.61.0...v1.62.0

v1.61.0

Release Summary

• feat(s2n-quic-core, s2n-quic-dc): Access inner context for generated metrics Subscribers

What's Changed

• doc: fix doc for with_limits methods by @boquan-fang in #2682
• ci: fix clippy test by @CarolYeh910 in #2686
• Expose inner context on metrics Subscriber by @Mark-Simulacrum in #2685
• fix(s2n-quic-dc): avoid memory leak in worker waker by @camshaft in #2687
• build(deps): update lru requirement from 0.14 to 0.15 by @dependabot in #2684
• chore(release): v1.61.0 release by @boquan-fang in #2690

Full Changelog: v1.60.0...v1.61.0

Release v1.60.0

Release Summary

• Bump S2N-QUIC's MSRV to 1.82.0
• (s2n-quic-dc) Increase background handshake jitter
• (s2n-quic-dc) Emit additional events for TCP connects
• (s2n-quic-dc) Add event for connection-open deduplication
• (s2n-quic-dc) Expose HandshakingPath to access entry/error after handshake completes
• (s2n-quic-dc) Properly detect truncated streams

What's Changed

• chore: bump MSRV to 1.82.0 by @boquan-fang in #2654
• ci(udeps): use nightly v1.85.0 toolchain to fix udeps by @boquan-fang in #2658
• ci(GithubAction): only run aws credential on upstream s2n-quic by @boquan-fang in #2656
• fix(dc/wireshark): Provide Rust edition to bindgen by @goatgoose in #2663
• build(deps): update bindgen requirement from 0.71 to 0.72 in /tools/xdp by @dependabot in #2660
• Revert "ci(GithubAction): only run aws credential on upstream s2n-quic" by @boquan-fang in #2666
• fix(ci): skip max_total_test for cargotiming job by @boquan-fang in #2665
• build(deps): update prost requirement from 0.13 to 0.14 by @dependabot in #2667
• feat(s2n-quic-dc): Increase background handshake jitter by @Mark-Simulacrum in #2670
• build(deps): revert update of prost requirement from 0.13 to 0.14 by @tautschnig in #2671
• build(deps): bump docker/setup-buildx-action from 3.10.0 to 3.11.0 by @dependabot in #2672
• build(deps): bump docker/setup-buildx-action from 3.11.0 to 3.11.1 by @dependabot in #2673
• build(deps): update prost requirement from 0.13 to 0.14 by @dependabot in #2674
• feat(s2n-quic-dc): Define dcQUIC stream connect events by @Mark-Simulacrum in #2675
• Emit event for deduplicated connection opens by @Mark-Simulacrum in #2677
• ci: remove skipping tests for cargotiming by @boquan-fang in #2680
• feat(s2n-quic-dc): Expose dc::HandshakingPath publicly by @Mark-Simulacrum in #2679
• fix(s2n-quic-dc): detect truncated streams by @Mark-Simulacrum in #2681
• chore: release v1.60.0 by @CarolYeh910 in #2683

New Contributors

• @CarolYeh910 made their first contribution in #2683

Full Changelog: v1.59.0...v1.60.0