Componentpedia / Listings / h2

Last update: 01/04/2026

h2

HTTP 2.0 client & server implementation for Rust.

Latest version: 0.4.13 registry icon
Maintenance score
100
Safety score
91
Popularity score
97
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Security
  Vulnerabilities
Version Suggest Low Medium High Critical
0.4.13 0 0 0 0 0
0.4.12 0 0 0 0 0
0.4.11 0 0 0 0 0
0.4.10 0 0 0 0 0
0.4.9 0 0 0 0 0
0.4.8 0 0 0 0 0
0.4.7 0 0 0 0 0
0.4.6 0 0 0 0 0
0.4.5 0 0 0 0 0
0.4.4 0 0 0 0 0
0.4.3 0 0 1 0 0
0.4.2 0 0 1 0 0
0.4.1 0 0 2 0 0
0.4.0 0 0 2 0 0
0.3.27 0 0 0 0 0
0.3.26 0 0 0 0 0
0.3.25 0 0 1 0 0
0.3.24 0 0 1 0 0
0.3.23 0 0 2 0 0
0.3.22 0 0 2 0 0
0.3.21 0 0 2 0 0
0.3.20 0 0 2 0 0
0.3.19 0 0 2 0 0
0.3.18 0 0 2 0 0
0.3.17 0 0 2 0 0
0.3.16 0 0 3 0 0
0.3.15 0 0 3 0 0
0.3.14 0 0 3 0 0
0.3.13 0 0 3 0 0
0.3.12 0 0 3 0 0
0.3.11 0 0 3 0 0
0.3.10 0 0 3 0 0
0.3.9 0 0 3 0 0
0.3.8 0 0 3 0 0
0.3.7 0 0 3 0 0
0.3.6 0 0 3 0 0
0.3.5 0 0 3 0 0
0.3.4 0 0 3 0 0
0.3.3 0 0 3 0 0
0.3.2 0 0 3 0 0
0.3.1 0 0 3 0 0
0.3.0 0 0 3 0 0
0.2.7 0 0 3 0 0
0.2.6 0 0 3 0 0
0.2.5 0 0 3 0 0
0.2.4 0 0 3 0 0
0.2.3 0 0 3 0 0
0.2.2 0 0 3 0 0
0.2.1 0 0 3 0 0
0.2.0 0 0 3 0 0
0.1.26 0 0 3 0 0
0.1.25 0 0 3 0 0
0.1.24 0 0 3 0 0
0.1.23 0 0 3 0 0
0.1.22 0 0 3 0 0
0.1.21 0 0 3 0 0
0.1.20 0 0 3 0 0
0.1.19 0 0 3 0 0
0.1.18 0 0 3 0 0
0.1.17 0 0 3 0 0
0.1.16 0 0 3 0 0
0.1.15 0 0 3 0 0
0.1.14 0 0 3 0 0
0.1.13 0 0 3 0 0
0.1.12 0 0 3 0 0
0.1.11 0 0 3 0 0
0.1.10 0 0 3 0 0
0.1.9 0 0 3 0 0
0.1.8 0 0 3 0 0
0.1.7 0 0 3 0 0
0.1.6 0 0 3 0 0
0.1.5 0 0 3 0 0
0.1.4 0 0 3 0 0
0.1.3 0 0 3 0 0
0.1.2 0 0 3 0 0
0.1.1 0 0 3 0 0
0.1.0 0 0 3 0 0
0.0.0 0 0 3 0 0

Stability
Latest release:

0.4.13 - This version is safe to use because it has no known security vulnerabilities at this time. Find out if your coding project uses this component and get notified of any reported security vulnerabilities with Meterian-X Open Source Security Platform

Licensing

Maintain your licence declarations and avoid unwanted licences to protect your IP the way you intended.

MIT   -   MIT License

Not a wildcard

Not proprietary

OSI Compliant

H2

A Tokio aware, HTTP/2 client & server implementation for Rust.

License: MIT Crates.io Documentation

More information about this crate can be found in the crate documentation.

Features

  • Client and server HTTP/2 implementation.
  • Implements the full HTTP/2 specification.
  • Passes h2spec.
  • Focus on performance and correctness.
  • Built on Tokio.

Non goals

This crate is intended to only be an implementation of the HTTP/2 specification. It does not handle:

  • Managing TCP connections
  • HTTP 1.0 upgrade
  • TLS
  • Any feature not described by the HTTP/2 specification.

This crate is now used by hyper, which will provide all of these features.

Usage

To use h2, first add this to your Cargo.toml:

[dependencies]
h2 = "0.4"

Next, add this to your crate:

extern crate h2;

use h2::server::Connection;

fn main() {
    // ...
}

FAQ

Is this an embedded Java SQL database engine?

No.