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Crate features / hyper

Feature flags · hyper 1.12.0 · from crates.io 2026-10-24

hyper features: what each one does, and the line to copy

Short answerhyper 1.12.0 has 9 features. Nothing is on by default: turn on what you use. It needs Rust 1.63 or newer.

Pick features

1.12.0latest version
9features
13optional dependencies
1.63MSRV (rust-version)

Every feature

FeatureIn defaultTurns on
capinothing else (a switch the code checks)
clientdep:want, dep:pin-project-lite, dep:smallvec
ffidep:http-body-util, dep:futures-util
fullclient, http1, http2, server
http1dep:atomic-waker, dep:futures-core, dep:httparse, dep:itoa
http2dep:atomic-waker, dep:futures-channel, dep:futures-core, dep:h2
nightlynothing else (a switch the code checks)
serverdep:httpdate, dep:pin-project-lite, dep:smallvec
tracingdep:tracing

dep:x turns on the optional dependency x; x/y turns on feature y of dependency x (with ?, only if x is already on).

MSRV history

The minimum Rust version hyper declares (rust-version), and the release that changed it:

  • 1.0.0-rc.4 (2023-07-10): Rust 1.56
  • 1.0.0 (2023-11-15): Rust 1.63
  • 0.14.28 (2023-12-18): no rust-version declared
  • 1.1.0 (2023-12-18): Rust 1.63
  • 0.14.29 (2024-06-03): no rust-version declared
  • 1.4.0 (2024-07-01): Rust 1.63
  • 0.14.30 (2024-07-09): no rust-version declared
  • 1.4.1 (2024-07-09): Rust 1.63
  • 0.14.31 (2024-10-15): no rust-version declared
  • 1.5.0 (2024-10-15): Rust 1.63
  • 0.14.32 (2024-12-16): no rust-version declared
  • 1.5.2 (2024-12-16): Rust 1.63

Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p hyper --precise <version>, or use resolver 3, which picks compatible versions for you.

More on hyper

Real downloads, dependents and alternatives: hyper crate data (2.8M real downloads a day, 5,861 dependents).

Security record: hyper advisories.

docs.rs feature list · crates.io · license MIT · edition 2021

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