On Tue, Sep 21, 2021 at 12:48 PM Jeff King <peff@xxxxxxxx> wrote: > But certainly I found the behavior surprising. :) I'd guess it's because > HTTP/2 is sending some binary goo instead of text headers, and the names > we get are just coming from some lookup table? Or maybe I'm just showing > my ignorance of HTTP/2. AFAIK headers in HTTP/2 MUST be lowercase as per the SPEC[1] Carlo [1] https://datatracker.ietf.org/doc/html/rfc7540#section-8.1.2