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Re: Application name patch - v4

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Dave Page <dpage(at)pgadmin(dot)org>
Cc: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Robert Haas <robertmhaas(at)gmail(dot)com>, Dimitri Fontaine <dfontaine(at)hi-media(dot)com>
Subject: Re: Application name patch - v4
Date: 2009-12-01 16:28:22
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
Dave Page <dpage(at)pgadmin(dot)org> writes:
> On Tue, Dec 1, 2009 at 4:19 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> I don't think that we need to bump the protocol version. The real
>> alternative here would be that libpq sends a startup packet that
>> includes application_name, and if it gets an error back from that,
>> it starts over without the app name.

> I looked (briefly) at doing that when we first ran into this
> suggestion. As you pointed out at the time, it seemed like that would
> require some fairly ugly hackery in fe-connect.c

Perhaps, but at the time it wasn't apparent that issuing a separate SET
would create user-visible behavioral inconsistencies.  Now that we've
realized that, I think we should reconsider.

If people are agreed that double connect is a better alternative
I'm willing to go look at how to make it happen.

			regards, tom lane

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