Bruce Momjian <pgman@candle.pha.pa.us> writes:
>> The problem with bumping the protocol version number is that it breaks
>> client-to-server compatibility *whether or not a particular connection
>> needs the new auth method*. Eg, a new client will be unable to talk to
>> an old server. This is not good.
> Why is this the case? There is nothing in the new client code that will
> conflict with an old server, right? Is it something hardwired in the
> client code?
No, but the old postmaster will reject it. See lines 1056ff in
postmaster.c.
regards, tom lane
