| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp>, peter_e(at)gmx(dot)net, barry(at)xythos(dot)com, zakkr(at)zf(dot)jcu(dot)cz, pgsql-patches(at)postgresql(dot)org |
| Subject: | Re: encoding names |
| Date: | 2001-08-19 15:13:41 |
| Message-ID: | 25440.998234021@sss.pgh.pa.us |
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| Lists: | pgsql-hackers pgsql-patches |
Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> However, this brings up the issue of how a backend will fail if the
> client provides a newer protocol version. I think we should get it to
> send back its current protocol version and see if the client responds
> with a protocol version we can accept.
Why? A client that wants to do this can retry with a lower version
number upon seeing the "unsupported protocol version" failure. There's
no need to change the postmaster code --- indeed, doing so would negate
the main value of such a feature, namely being able to talk to *old*
postmasters.
regards, tom lane
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