On Wed, Jan 14, 2026 at 3:12 PM Jelte Fennema-Nio <[email protected]> wrote: > As a maintainer of a proxy, I'd be pretty annoyed if clients start > sending fields or messages that I don't expect, without *something* in > the StartupMessage advertising that that will happen. This specific > patch would be fine for pgbouncer, because it only parses the first > few fields of the Bind message. But e.g pgcat seems to parse the whole > Bind message[2]
Yeah... I'm pretty skeptical of the phrase "backwards compatible" in the way you've used it, Dave. I think that assumes either that everyone's packet parsers are incredibly lenient, or else that `ERROR: invalid message format` should be considered a compatible response. (This ties into my upthread concern that we don't have a good shared mental model for middlebox compatibility in the protocol.) --Jacob
