Greetings, The current docs say that if a client asks for a protocol that the backend doesn't support, it will return the newest minor version. https://www.postgresql.org/docs/current/protocol-message-formats.html#PROTOCOL-MESSAGE-FORMATS-NEGOTIATEPROTOCOLVERSION
However that isn't what it returns. It actually returns the entire newest protocol that it supports. Attached is a patch to fix the docs. Dave Cramer
protocol.patch
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