Releases · quinn-rs/quinn

A collection of smaller fixes and improvements, including those in quinn 0.11.1 and quinn-udp 0.5.1.

Thanks to all contributors!

What's Changed

Test voluntary acks when sending max-size datagrams by @Ralith in #1856
Clarify Connection::space_can_send logic by @Ralith in #1851
Fix previous path validation allowing flows to be linked across migration by @Ralith in #1857
proto: allow rustls::ClientConfig without initial suite by @djc in #1859
Reduce black hole detection false positives by @Ralith in #1858
Centralize and update local_ip platform support documentation by @Ralith in #1868
Relax unnecessary unique borrow by @Ralith in #1871
Fix bytes read count in ReadExactError::FinishedEarly by @Ralith in #1875
Support openbsd by @flub in #1863
proto: make NoInitialCipherSuite Copy by @djc in #1876
Fix stopped recv stream flow control underflow under reordering by @Ralith in #1869
Trivial SendStream error cleanup by @Ralith in #1872
Simpler and more precise ID flow control update check in Chunks by @Ralith in #1874
Introduce RecvStream::received_reset by @Ralith in #1873
proto: make PartialDecode API public by @thynson in #1865
Make ConnectionIdParser object-safe, and accept trait object impls by @Ralith in #1878

A year after the release of 0.10.0 of Quinn, our popular community-oriented pure-Rust implementation of QUIC, we have a slew of improvements. The highlights are an upgrade to rustls 0.23 and ring 0.17 (which unfortunately got delayed by incompatibilities introduced in the rustls 0.22), a new API to triage incoming connections and a number of performance improvements. The quinn-udp crate has seen a lot of improvements, including much improved Windows support.

We've recently started an OpenCollective account which we hope commercial organizations relying on Quinn will donate to in order to support ongoing development and maintenance of the project. Since the previous major release, we've also started a Discord channel which has become the preferred (synchronous/ephemeral) communication channel for the project.

This release supports Rust 1.66 and newer.

Thanks to all contributors on behalf of the Quinn team, @Ralith and @djc!

Notable changes

Update rustls to 0.23 and ring to 0.17 by @djc in #1715
Allow app to accept/reject/retry before handshake begins by @gretchenfrage in #1752
Implement acknowledgement frequency by @aochagavia in #1553
Replace rustls-native-certs with rustls-platform-verifier by @Ralith in #1734
Support smol runtime by @al8n in #1719

Performance

Transmit directly from connection tasks by @Ralith in #1729
#729: proto: write outgoing packets to caller-supplied memory by @lmpn in #1697
udp: add support for ECN, local addrs, GSO, and GRO on Windows by @stormshield-damiend in #1701
Don't allocate an endpoint response buffer for every driver wakeup by @Ralith in #1730
Defer initial packet payload decryption until after accept by @Ralith in #1804
Perform early first-packet validation before decryption by @Ralith in #1789
Allocate Incoming response buffers as needed by @Ralith in #1811
Match GSO segment size to the first datagram, not the MTU by @Ralith in #1837

Features

preferred address by @devsnek in #1816
add Connection::send_datagram_wait by @devsnek in #1740
Look up the time through trait Runtime by @Ralith in #1839
Make SendStream::finish synchronous by @Ralith in #1840

Fixes

Use boxed AsyncUdpSocket when creating abstract endpoint by @tthebst in #1595
fix: Make new_with_abstract public again by @tthebst in #1596
Preserve the tracing span in the EndpointDriver task by @flub in #1616
Mitigate optimistic ACK attacks by @Ralith in #1613
set may_fragment based on whether setting IP_DONTFRAG fails with ENOPROTOOPT. by @jieliangma in #1626
udp: don't log EMSGSIZE errors by @Ralith in #1635
Propagate current tracing span to spawned connection drivers by @Ralith in #1632
proto: Fix double-boxing of congestion::ControllerFactory by @Ralith in #1641
proto: don't panic when draining an unknown connection by @Ralith in #1645
Require explicit timestamp for Endpoint::connect(), Rust 1.72 by @djc in #1649
Add missing export for proto::AckFrequencyConfig. by @stormshield-damiend in #1651
silent an info message related to ack frequency. by @stormshield-damiend in #1652
Generalize UdpStats::transmits to ios by @Ralith in #1655
Send ACK_FREQUENCY frames intelligently rather than spamming IMMEDIATE_ACK by @Ralith in #1656
Pass byte read count to FinishEarly by @rom1v in #1666
Fix ACK frequency extension corner case by @Ralith in #1672
Yield protocol violation for packets without frames by @djc in #1693
Make quinn-proto::{Connection, Endpoint} deterministic by @michael-yxchen in #1691
proto: add a way to configure the minimum MTU change needed to stop the binary search used during the MTU discovery phase. by @stormshield-damiend in #1702
Validate 0-RTT frames based on packet type, not handshake progress by @Ralith in #1722
proto: yield transport error for Initial packets with no CRYPTO by @djc in #1721
Send path validation responses to the correct remote by @Ralith in #1746
fix(quinn-udp): use TOS for IPv4-mapped IPv6 dst addrs by @mxinden in #1765
Improve reliability of Close delivery during handshakes by @Ralith in #1767
Don't double-count buffer consumption in close length checks by @Ralith in #1768
Improve behavior when only one peer sends ACK-eliciting packets by @Ralith in #1761
Fix constant of frame_type IMMEDIATE_ACK by @nemethf in #1774
Bound memory use in RETIRE_CONNECTION_ID frame queue by @Ralith in #1787
Add missing transport parameter validation checks by @Ralith in #1791
Rate-limit stateless resets by @Ralith in #1794
Use the correct MTU for prev_path by @nemethf in #1776
Break linkability on client-side after planned migration by @nemethf in #1800
Allow packets with impossible CIDs to be ignored rather than reset by @Ralith in #1796
Make quinn_proto::Connection and quinn_proto::Endpoint impl Sync by @Pixelstormer in #1769
Refuse incoming/forbid outgoing connections after endpoint is closed by @Ralith in #1829
Socket rebind: drain old socket by @nemethf in #1801
Accept connections with unrecognized address validation tokens by @Ralith in #1790
Fix race condition between 0-RTT and Incoming by @gretchenfrage in #1821
Fix minor datagram send bugs by @Ralith in #1836

Miscellaneous

Perform a key update early in a connection's lifetime by @Ralith in #1614
Fix some typos by @striezel in #1570
Update actions/checkout in GitHub Actions workflows to v3 by @striezel in #1571
Allow compilation with --cfg fuzzing but not --features=arbitrary by @smoelius in #1574
Docs: Use fullchain.pem in the certbot example by @DontBreakAlex in #1577
Extend Dependabot configuration to keep GitHub Actions up to date by @striezel in #1580
Replace unmaintained actions-rs/* actions in CI workflows by @striezel in #1579
Miscellaneous cleanup by @Ralith in #1581
Update obsolete doc comment by @Ralith in #1582
Update rcgen requirement from 0.10.0 to 0.11.1 by @dependabot in #1590
Update README.md to say "see examples for usage" with link by @kettle11 in #1594
Reexport rustls types by @jonatanzeidler in #1600
Update docs for UDP fragmentation configuration support by @Ralith in #1599
Fold UdpState into AsyncUdpSocket by @Ralith in #1612
Bump Swatinem/rust-cache from 1 to 2 by @dependabot in #1623
Privatize TransportParameters::default() by @Ralith in #1627
udp: simplify socket state initialization by @djc in #1629
udp: use set_socket_option_supported() wrapper by @djc in #1633
Add docs for RecvMeta by @flub in #1634
Deflake ACK tests by @Ralith in #1639
Replace Gitter link with Discord by @djc in #1643
Minor bulk benchmark improvements by @Ralith in #1657
Bump actions/checkout from 3 to 4 by @dependabot in #1658
Implement Debug for IdleTimeout. by @vvvviiv in #1690
Update a...