I'd like to propose deprecating "cqhv" log field on 9.0.0. The documentation says "cqhv" logs "Client request HTTP version", however, it's been false for a long time because the value never be HTTP/2. What it actually logs is "HTTP version that ATS internally uses". As some of you may know, ATS processes HTTP/2 requests by converting the requests to HTTP/1.1 internally. And "cqhv" logs the HTTP version after the conversion. So it's always HTTP/1.1 or maybe HTTP/1.0, and I guess most people don't care about the internal representation.
And we have another tag field "cqpv" that logs "Client request protocol and version", which supports HTTP/2 and also HTTP/3. The value matches with the protocol and version you can see on the client side. This is probably what you really want to know. I'm not sure whether the current behavior of "cqhv" is intentional or not. Maybe we should have fixed it before we introduce "cqpv". Even so, I think we can deprecate "cqhv" since we already have "cqpv". I'm fine with keeping "cqhv" if some of you need it, but we should probably update the documentation in that case. Thanks, Masakazu
