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io.ktor:ktor-client-cio

Ktor is a framework for quickly creating web applications in Kotlin with minimal effort.

About
asyncasynchronouskotlinwebweb-framework
io.ktorgithub.com/ktorio/ktorApache-2.0Jetbrains Team14.6k · 1.3k forks · 435 contributors
Compare
Compares against 3.6.1 (latest stable)
Latest Stable3.6.1Oct 29, 2026
Latest RC3.0.0-rc-2Oct 2, 2024
Latest Beta3.0.0-beta-2Jul 15, 2024
Release cadenceEvery month
Last releaseOct 29, 2026
Open advisories0
Changelog quality94% curated
GitHub Releases, gaps for some releases
Release history SecurityYou're on
3.x
STABLE · RCPRE-RELEASE2024AprJulOct2025AprJulOct2026AprJulOct

63 older or filtered releases not shown.

Upgrade guides

Breaking changes and a migration checklist for each major version
io.ktor:ktor-client-cio 2 → 32.3.13 → 3.6.1Oct 29, 2026 UnknownNew175Changed2Fixed311io.ktor:ktor-client-cio 1 → 21.6.8 → 2.3.13Nov 19, 2024 Unknown
VersionChannelDateChangesSecurity
3.6.1 StableOct 29, 2026No changes listed3.6.0 StableSep 16, 2026New30Fixed553.5.2 youStableJul 31, 2026New8Fixed183.5.1 StableJun 25, 2026New4Fixed413.5.0 StableMay 14, 2026New22Fixed313.4.3 StableApr 22, 2026Fixed123.4.2 StableMar 27, 2026New5Fixed173.4.1 StableMar 3, 2026New9Fixed263.4.0 StableJan 22, 2026New35Fixed343.3.3 StableNov 26, 2025New5Fixed83.3.2 StableNov 5, 2025New3Fixed113.3.1 StableOct 8, 2025New1Changed1Fixed63.3.0 StableSep 11, 2025New14Changed1Fixed103.2.4 StableMar 11, 2026No notes published3.2.3 StableJul 29, 2025New3Fixed43.2.2 StableJul 14, 2025New1Fixed83.2.1 StableJul 3, 2025New4Fixed103.2.0 StableJun 12, 2025New24Fixed173.1.3 StableMay 5, 2025New7Fixed73.1.2 StableMar 27, 2025No changes listed