http/2 client protocol error: frame with invalid size

I am attempting to do a single rest api (using https):

async fn one_req() -> Result<(), Error> {
    let mut b = hyper::client::Client::builder();
    b.http2_only(true);

    let https= HttpsConnector::new();
    let c = b.build::<_, Body>(https);

    let url = ...;
    let buf = vec![0u8; 1024];
    let req = Request::builder()
        .method("POST")
        .uri(url)
        .version(hyper::Version::HTTP_2)
        .body(hyper::Body::from(buf))?;

    let rsp = c.request(req).await?;
    let rsp_buf = rsp.into_body().data().await.unwrap()?;
    // Do something with rsp buffer

    Ok(())
}

I get error: protocol error: frame with invalid size

I tried combinations of enabling/disabling b.http2_only(true); and commenting .version(hyper::Version::HTTP_2)

However, curl works with the same server & confirmed from server that it is indeed http/2 version:

$ echo hello | curl -X POST -k --http2 --data-binary @- https://127.0.0.1:9001/put
{"Len":6}

Env details:

• Server: HTTPS Server in Golang
• Server & Client running on MacOS
• hyper enabled with full features
• hyper ver = 0.14

Happy to provide trace of the client if needed

Start by reproducing the provided minimal Rust client request against the Go HTTPS server, comparing it with the working curl HTTP/2 request. Collect the client trace mentioned in the issue and determine whether the invalid frame comes from the server response or hyper's HTTP/2 handling; done means identifying the incompatibility and documenting or fixing it with a reproducible test.