Dep/s: http-kit is on Clojars.
Versioning: http-kit uses Break Versioning.

This is a major feature and maintenance release. As always, please test carefully and report any unexpected problems, thank you! 🙏

Highlights include:

• Performance improvements, incl. auto JVM 21+ virtual threads when available.
• Support for the latest Ring async and WebSocket APIs.
• A comprehensive new benchmark suite for http-kit server and client.
• >15 fixes and numerous other improvements

See linked commits below for details.

A huge thanks to the 10 contributors who helped create this release!

- Peter Taoussanis

Changes since v2.7.0 (2023-06-30)

• 6db3f0f [mod] Bump minimum Java version: 7->8
• If using AOT/uberjar, please ensure that you build with the lowest Java version that you'd like to support.

Fixes since v2.7.0 (2023-06-30)

• 2474302 [fix] [client] [#535] [#536] Fix handling of some bad ssl certificates (@jeffdik)
• b9f84d5 [fix] [client] [#523] Basic support for trailer section in chunked encoding responses
• b45725f [fix] [server] [#543] Migrate away from SimpleDateFormat to java.time, fixes native-image issue (@borkdude)
• 45a4b53 [fix] [server] [#537] Respond with Connection: Close when appropriate
• 126d5df [fix] [client] [#528] Possible fix for broken insecure? client option
• 9be19c0 [fix] [client] [#528] Re-enable insecure SSL client tests disabled for #513
• de3596a [fix] [server] [#539] [#540] Prevent race condition in TimerService (@weavejester)
• 99de95b [fix] [server] [#552] [#553] Bad arg order causing broken loggers config (@frwdrik)
• 2dcfa29 [fix] [server] [#546] Fix Jetty server SNI check in client tests (@weavejester)
• ed6833e [fix] [client] [#560] Attempted fix to allow SSL with IP host
• 48cb7fe [fix] [server] [#559] Add missing Content-Type header to last-resort error responses
• bfba515 [fix] [client] Ignore nil clients, even when they're delay-wrapped
• 8738140 [fix] [server] [#551] Unintentional code duplication (@slipset)
• 491e19c [fix] [tests] Flaky timing in CI
• e2ca731 [fix] Resolve Lein composite profile warning

New since v2.7.0 (2023-06-30)

• c91a752 [new] [server] [#546] Add support for Ring WebSocket API (@weavejester)
• 6652df8 [new] [server] [#394] [#538] Add support for Ring async handler arities (@weavejester)
• 47129af [new] [server] Refactor worker threading, use virtual threads by default on JVM 21+
• e38169b [new] [client] Refactor worker threading, use virtual threads by default on JVM 21+
• 741eed8 [new] [tests] Add new benchmark suite
• 2a74dbf [new] [tests] Add first benchmark results
• af5550f [new] [client] [#554] Support non-ASCII characters on multipart filenames (@davartens)
• 41940f3 [new] [client] [server] Add public worker constructors
• f267426 [new] [client] [server] utils/new-worker improvements
• 890de2d [new] [client] [#561] [#562] Add :nested-param-style option to client requests (@wevre)

Other improvements since v2.7.0 (2023-06-30)

• 5379f62 [new] [server] [#546] Also test without support for Ring WebSocket API
• 4813a17 [nop] [#530] [#531] Update dep: http.async.client (@NoahTheDuke)
• 9877bca [nop] [client] Don't submit tasks to closed pool
• 92fc3fe [wiki] Add client page from legacy website (@harold)
• 9b131e2 [wiki] Clean-up, update client docs
• Updated dependencies

Everything since v2.8.0-RC1 (2024-02-06)

• 890de2d [new] [client] [#561] [#562] Add :nested-param-style option to client requests (@wevre)

📦 Available on Clojars, this project uses Break Versioning.

This is a major feature and maintenance pre-release.
Please test carefully and report any unexpected problems, thank you! 🙏

Highlights include:

• Support for the latest Ring async and WebSocket APIs
• Performance improvements, incl. auto use of JVM 21+ virtual threads when available
• Numerous minor features, fixes, and other improvements

Please see linked commits below for details.

A huge thanks to all contributors!

Changes since v2.7.x

• 6db3f0f [mod] Bump minimum Java version: 7->8
• If using AOT/uberjar, please ensure that you build with the lowest Java version that you'd like to support.

Fixes since v2.7.x

• 2474302 [fix] [client] [#535] [#536] Fix handling of some bad ssl certificates (@jeffdik)
• b9f84d5 [fix] [client] [#523] Basic support for trailer section in chunked encoding responses
• b45725f [fix] [server] [#543] Migrate away from SimpleDateFormat to java.time, fixes native-image issue (@borkdude)
• 45a4b53 [fix] [server] [#537] Respond with Connection: Close when appropriate
• 126d5df [fix] [client] [#528] Possible fix for broken insecure? client option
• 9be19c0 [fix] [client] [#528] Re-enable insecure SSL client tests disabled for #513
• de3596a [fix] [server] [#539] [#540] Prevent race condition in TimerService (@weavejester)
• 99de95b [fix] [server] [#552] [#553] Bad arg order causing broken loggers config (@frwdrik)
• 2dcfa29 [fix] [server] [#546] Fix Jetty server SNI check in client tests (@weavejester)
• ed6833e [fix] [client] [#560] Attempted fix to allow SSL with IP host
• 48cb7fe [fix] [server] [#559] Add missing Content-Type header to last-resort error responses
• bfba515 [fix] [client] Ignore nil clients, even when they're delay-wrapped
• 8738140 [fix] [server] [#551] Unintentional code duplication (@slipset)
• 491e19c [fix] [tests] Flaky timing in CI
• e2ca731 [fix] Resolve Lein composite profile warning

New since v2.7.x

• c91a752 [new] [server] [#546] Add support for Ring WebSocket API (@weavejester)
• 6652df8 [new] [server] [#394] [#538] Add support for Ring async handler arities (@weavejester)
• 47129af [new] [server] Refactor worker threading, use virtual threads by default on JVM 21+
• e38169b [new] [client] Refactor worker threading, use virtual threads by default on JVM 21+
• 741eed8 [new] [tests] Add new benchmark suite
• 2a74dbf [new] [tests] Add first benchmark results
• af5550f [new] [client] [#554] Support non-ASCII characters on multipart filenames (@davartens)
• 41940f3 [new] [client] [server] Add public worker constructors
• f267426 [new] [client] [server] utils/new-worker improvements

Other improvements since v2.7.x

• 5379f62 [new] [server] [#546] Also test without support for Ring WebSocket API
• 4813a17 [nop] [#530] [#531] Update dep: http.async.client (@NoahTheDuke)
• 9877bca [nop] [client] Don't submit tasks to closed pool
• 92fc3fe [wiki] Add client page from legacy website (@harold)
• 9b131e2 [wiki] Clean-up, update client docs
• Updated dependencies

📦 Available on Clojars, this project uses Break Versioning.

Hotfix: identical to v2.8.0-beta2 but removes an unintended dependency on Cider. Thanks to @borkdude for the report!

📦 Available on Clojars, this project uses Break Versioning.

This is an early maintenance and feature pre-release.
Please test carefully and report any unexpected problems, thank you! 🙏

Fixes since v2.8.0-beta1

• de3596a [fix] [server] [#539] [#540] Prevent race condition in TimerService (@weavejester)
• 2474302 [fix] [client] [#535] [#536] Fix handling of some bad ssl certificates (@jeffdik)
• b45725f [fix] [server] [#543] Migrate away from SimpleDateFormat to java.time, fixes native-image issue (@borkdude)
• 45a4b53 [fix] [server] [#537] Respond with Connection: Close when appropriate

New since v2.8.0-beta1

• 741eed8 [new] [tests] Add new benchmark suite
• 2a74dbf [new] [tests] Add first benchmark results
• 6652df8 [new] [server] [#394] [#538] Add support for Ring async handler arities (@weavejester)
• 41940f3 [new] [client] [server] Add public worker constructors
• f267426 [new] utils/new-worker improvements

Other improvements since v2.8.0-beta1

• 7d49819 [nop] Bump Jetty dependency, fix broken tests
• 9877bca [nop] [client] Don't submit tasks to closed pool
• 92fc3fe [wiki] Add client page from legacy website (@harold)
• 9b131e2 [wiki] Clean-up, update client docs

📦 Available on Clojars, this project uses Break Versioning.

This is an early maintenance and feature pre-release.
Please test carefully and report any unexpected problems, thank you! 🙏

The main improvement in this release is to make it easier to automatically get good performance from http-kit client + server. Virtual threads are now used by default for both client and server on Java 21+, otherwise the default worker pools are now automatically sized based on available processor count.

As before, you may still want to customize your request queue and/or worker threading - but the changes here make it much easier to get started with reasonable defaults.

As always, feedback welcome! Cheers :-)

- Peter Taoussanis

Changes since v2.7.x

• 6db3f0f [mod] Bump minimum Java version: 7->8

Fixes since v2.7.x

• b9f84d5 [fix] [client] [#523] Basic support for trailer section in chunked encoding responses
• 126d5df [fix] [client] [#528] Possible fix for broken insecure? client option
• 9be19c0 [fix] [client] [#528] Re-enable insecure SSL client tests disabled for #513

New since v2.7.x

• 47129af [new] [server] Refactor worker threading, use virtual threads by default on JVM 21+
• e38169b [new] [client] Refactor worker threading, use virtual threads by default on JVM 21+

Other improvements since v2.7.x

• 4813a17 [nop] [#530] [#531] Update dep: http.async.client (@NoahTheDuke)

📦 Available on Clojars

Please test carefully and report any issues!

Identical to 2.7.0-RC1 except for:

• cdfc5fb [fix] [client] [#524] Reliably close InputStream when data too large (@rublag)

Changes since 2.6.0 ⚠️

• [BREAK] [#528] [Client] Support for :insecure? flag is currently broken
• 6158351 [mod] [Client] [#501] [#502] Join multiple headers with "\n" rather than "," (@g23)

📦 Available on Clojars

Identical to 2.7.0-beta3.

This is a major pre-release that includes many significant fixes and new features.
Please test carefully and report any issues!

A big thanks to the many contributors 🙏

Changes since 2.6.0 ⚠️

• [BREAK] [#528] [Client] Support for :insecure? flag is currently broken
• 6158351 [mod] [Client] [#501] [#502] Join multiple headers with "\n" rather than "," (@g23)

New since 2.6.0

• ed1cb8e [nop] [Docs] Introduced a new community docs wiki
• e5c8caa [new] [Client] [#393 #513] Use SNI client by default for Java >= 8
• 02a3739 [new] [Server] [Client] [#510] [#461] Support custom address & channel providers, enable Unix Domain Sockets (@kipz)
• 17eacca [new] [Client] Support dereffable :client vals
• 7cba2db [new] [Server] [#504] Add temporary clj-kondo support for with-channel (@figurantpp)
• eafdfcd [#224 #451] [Client] [New] Add basic multipart/mixed support (@vtrbtf)
• 4dd4ee5 [#400 #490] [Client] [New] Add :as :raw-byte-array coercion for babashka use case (@xfthhxk)
• 13e38b8 [#485] [Client] [New] Add HTTP LIST method (@greglook)
• 727b4f1 [#484] [Server] [New] Add :start-time initial timestamp to requests (@niquola)
• 754fe88 [#479] [Server] [New] Add org.http-kit.memmap-file-threshold JVM property (@ikappaki)

Fixes since 2.6.0

• 304c042 [fix] [Client] [#464] Retain dynamic client on client redirects
• 4ff7dba [fix] [Server] [#498] [#499] Don't send Content-Length header for status 1xx or 204 (@restenb)
• d6fa328 [fix] [Server] [#375] [EXPERIMENTAL] NB prevent unintentional re-use of channels (@osbert)
• 2feb510 [fix] [Client] [#446] [EXPERIMENTAL] Use host as key for keepalive conns (@luizhespanha)
• 48a4688 [fix] [Server] [#504] [#508] Add missing ^:deprecated meta for with-channel, et al.
• 5b742ed [fix] [Client] [#503] Properly close sockets when calling stop() on client (@benbramley)
• 7632f46 [fix] [Client] [#505] Prevent duplicate headers in HeaderMap, fix broken tests (@kipz)
• 550da73 [#493 #491] [Server] [fix] Send '100 Continue' response only once (@zgtm)

Other improvements since 2.6.0

• c393759 [nop] [Tests] [#508] [#512] Move all tests from with-channel to as-channel (@kipz)
• e2d7103 [new] [Build] [#509] [#511] Add native-image test to CI (@borkdude)
• dff3bab [new] [Build] [#507] Add GitHub to build and run tests (@kipz)
• cf13651 [#495] [Server] [Docs] Improve error message of HTTP server loop error (@tweeks-reify)
• 88e5a04 [Housekeeping] [Server] Use const for Content-Length header
• deac8ee [Client] [Docs] Improve client/request docstring
• 9b04909 Update some dependencies

📦 Available on Clojars

Identical to 2.7.0-beta2 except for:

• 10501a5 [fix] [#520] Remove unintended dependency on cider-nrepl plugin (@harold)

📦 Available on Clojars

This is a major pre-release that includes many significant fixes and new features.
Please test carefully and report any issues!

A big thanks to the many contributors 🙏

Changes since 2.6.0 ⚠️

• [BREAK] [#528] [Client] Support for :insecure? flag is currently broken
• 6158351 [mod] [Client] [#501] [#502] Join multiple headers with "\n" rather than "," (@g23)

New since 2.6.0

• ed1cb8e [nop] [Docs] Introduced a new community docs wiki
• e5c8caa [new] [Client] [#393 #513] Use SNI client by default for Java >= 8
• 02a3739 [new] [Server] [Client] [#510] [#461] Support custom address & channel providers, enable Unix Domain Sockets (@kipz)
• 17eacca [new] [Client] Support dereffable :client vals
• 7cba2db [new] [Server] [#504] Add temporary clj-kondo support for with-channel (@figurantpp)
• eafdfcd [#224 #451] [Client] [New] Add basic multipart/mixed support (@vtrbtf)
• 4dd4ee5 [#400 #490] [Client] [New] Add :as :raw-byte-array coercion for babashka use case (@xfthhxk)
• 13e38b8 [#485] [Client] [New] Add HTTP LIST method (@greglook)
• 727b4f1 [#484] [Server] [New] Add :start-time initial timestamp to requests (@niquola)
• 754fe88 [#479] [Server] [New] Add org.http-kit.memmap-file-threshold JVM property (@ikappaki)

Fixes since 2.6.0

• 304c042 [fix] [Client] [#464] Retain dynamic client on client redirects
• 4ff7dba [fix] [Server] [#498] [#499] Don't send Content-Length header for status 1xx or 204 (@restenb)
• d6fa328 [fix] [Server] [#375] [EXPERIMENTAL] NB prevent unintentional re-use of channels (@osbert)
• 2feb510 [fix] [Client] [#446] [EXPERIMENTAL] Use host as key for keepalive conns (@luizhespanha)
• 48a4688 [fix] [Server] [#504] [#508] Add missing ^:deprecated meta for with-channel, et al.
• 5b742ed [fix] [Client] [#503] Properly close sockets when calling stop() on client (@benbramley)
• 7632f46 [fix] [Client] [#505] Prevent duplicate headers in HeaderMap, fix broken tests (@kipz)
• 550da73 [#493 #491] [Server] [fix] Send '100 Continue' response only once (@zgtm)

Other improvements since 2.6.0

• c393759 [nop] [Tests] [#508] [#512] Move all tests from with-channel to as-channel (@kipz)
• e2d7103 [new] [Build] [#509] [#511] Add native-image test to CI (@borkdude)
• dff3bab [new] [Build] [#507] Add GitHub to build and run tests (@kipz)
• cf13651 [#495] [Server] [Docs] Improve error message of HTTP server loop error (@tweeks-reify)
• 88e5a04 [Housekeeping] [Server] Use const for Content-Length header
• deac8ee [Client] [Docs] Improve client/request docstring
• 9b04909 Update some dependencies

[http-kit "2.6.0"]

Non-breaking maintenance release with some fixes and minor features
See here recommended steps when updating any Clojure/Script dependencies.

Identical to v2.6.0-RC1.

Changes since 2.5.3

• [#476] [Server] Optimization: change buildRequestMap to create a PersistentHashMap directly (@bsless)

New since 2.5.3

• [#471 #472] [Client] Add option to not automatically add Accept-Content header (@MarcoNicolodi)

Fixes since 2.5.3

• [#469 #489] [Client] Properly unrecycle req when kept-alive conn wasn't able to be reused (@xwang1498)
• [#475 #477] [Graal] Add --initialize-at-run-time to config to stop GRAAL builds failing (@askonomm)
• [#482 #483] [Client] Fix java version parsing for JDK 17 (@pmonks)
• [#401 #481] [Client] mark Request as connected when reusing keepalive (@xwang1498)

Everything since 2.6.0-alpha1

• [#469 #489] [Fix] [Client] Properly unrecycle req when kept-alive conn wasn't able to be reused (@xwang1498)