Update h2spec

[lomigmegard]

Currently tests are using version 1.5.0, which is from 2016.

My current machine (Apple M1) Seg Fault on it (see #218 (comment)), making the H2SpecIntegrationSpec test suite fail.

./http2-tests/target/h2spec_darwin_amd64/h2spec --dryrun
[1]    3328 segmentation fault  ./http2-tests/target/h2spec_darwin_amd64/h2spec --dryrun

Updating h2spec to its latest version 2.6.0 would hopefully fix the issue.

Note this is non-critical as the current version is working well in the CI environment.

[pjfanning]

I'm not sure if h2spec supports Mac Silicon.

There only appear to be downloads for Mac AMD64 - https://github.com/summerwind/h2spec/releases/

[lomigmegard]

Indeed, no binaries for arm64/aarch64.

I still think this issue makes sense to eventually update to a more recent version.

[lomigmegard]

The update to 2.6.0 makes the new h2spec binary work on Apple Silicon, at least transparently using Rosetta (#218 (comment))

[jrudolph]

The update to 2.6.0 makes the new h2spec binary work on Apple Silicon, at least transparently using Rosetta (#218 (comment))

Great to know. I guess Rosetta hit a corner case in the old release.