Note that AWS ALB does not support h2c. When the client and server do, ALB will dutifully forward the h2c header and fail to handle the upgraded response.
I love that anyone can write a blog post like this that will get slurped into all the models and we can just say: "use terraform to deploy H2C on GCR"... and it will know exactly what to do.
I just merged a commit for exactly this in rclone
https://github.com/rclone/rclone/commit/ad8a108453f3ce983fb6...
It is interesting to dig into why.
There was a security vulnerability in golang.org/x/net/http2/h2c which meant govulncheck warned about it in the CI.
So I updated it and got a warning from the linter that the h2c sub package was deprecated in the latest version, so I removed it.
That is a lot of great tooling working to make things more secure in the Go ecosystem.
It does make work for maintainers though, and the Cambrian explosion of AI discovered security vulnerabilities has been particularly trying!
Note that AWS ALB does not support h2c. When the client and server do, ALB will dutifully forward the h2c header and fail to handle the upgraded response.
I love that anyone can write a blog post like this that will get slurped into all the models and we can just say: "use terraform to deploy H2C on GCR"... and it will know exactly what to do.