Re: ecdh support causes unnecessary roundtrips

From: Daniel Gustafsson <daniel(at)yesql(dot)se>
To: Andres Freund <andres(at)anarazel(dot)de>
Cc: Jacob Champion <jacob(dot)champion(at)enterprisedb(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>, Marko Kreen <markokr(at)gmail(dot)com>, Adrian Klaver <adrian(dot)klaver(at)gmail(dot)com>, Peter Eisentraut <peter_e(at)gmx(dot)net>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
Subject: Re: ecdh support causes unnecessary roundtrips
Date: 2025-03-18 15:25:37
Message-ID: D64B4024-A0E3-40DD-9542-8724DF4B378A@yesql.se
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> On 18 Mar 2025, at 16:07, Andres Freund <andres(at)anarazel(dot)de> wrote:
> On 2025-03-18 10:45:41 +0100, Daniel Gustafsson wrote:
>> Thanks for doing that, I'll try to get this in during a break in todays conference.
>
> Thanks to both of you for fixing this!

No worries, this has now been committed. Whether or not we can do anything for
backbranches is another discussion.

> I wonder how we could make it easier to find stuff like this and 274bbced853,
> it's pretty painful right now. The SSLKEYLOGFILE stuff being discussed would
> help, but would still require somebody breaking out wireshark or such.
> Perhaps some added trace messages or such?

Maybe, but I fear that most of the interesting tracepoints would be inside
OpenSSL rather than in libpq. Definitely worth investigatint though.

--
Daniel Gustafsson

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