h2spec ☆

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Description:
Conformance testing tool for HTTP/2 implementation

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: http2 testing conformance rfc7540 protocol

Install: brew install h2spec

About:
H2spec is a conformance testing tool designed to verify the compliance of HTTP/2 implementations with the protocol specification. It runs a suite of automated test cases to identify protocol violations and ensure robust interoperability. This tool is essential for developers building or maintaining HTTP/2 servers and clients.

Key Features:

Automated test execution against RFC 7540
Detailed reporting of compliance failures
Support for both HTTP/2 over TLS and cleartext
Command-line interface for easy integration

Use Cases:

Validating custom HTTP/2 server implementations for RFC compliance
Debugging interoperability issues between clients and servers
Performing regression testing during HTTP/2 stack updates

Alternatives:

nghttp2 – nghttp2 is a comprehensive HTTP/2 library that includes a client, server, and testing tools, whereas H2spec focuses specifically on conformance testing.
curl – curl is a versatile data transfer tool that can be used for manual HTTP/2 testing but lacks the automated, spec-driven test suite of H2spec.

Version History

Detected	Version	Rev	Change	Commit
Sep 12, 2025 3:00pm		0	VERSION_BUMP	7a29836f
Sep 13, 2024 4:18pm		0	VERSION_BUMP	958f9d3f