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Connection Options -- SSL already uses compression? 2+ messages / 2 participants [nested] [flat]
* Connection Options -- SSL already uses compression? @ 2012-10-20 01:10 Karl Denninger <karl@denninger.net> 2012-10-21 07:51 ` Re: Connection Options -- SSL already uses compression? Magnus Hagander <magnus@hagander.net> 0 siblings, 1 reply; 2+ messages in thread From: Karl Denninger @ 2012-10-20 01:10 UTC (permalink / raw) To: pgsql-performance Am I reading this correctly -- it appears that if SSL negotiation is enabled for a connection (say, when using pg_basebackup over a WAN) that compression /*is automatically used*/ (provided it is supported on both ends)? Is there a way to check and see if it _*is*_ on for a given connection? I was looking to hack in zlib support and saw that appears to be already-present support, provided SSL connection security is enabled. -- -- Karl Denninger /The Market Ticker ®/ <http://market-ticker.org; Cuda Systems LLC ^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: Connection Options -- SSL already uses compression? 2012-10-20 01:10 Connection Options -- SSL already uses compression? Karl Denninger <karl@denninger.net> @ 2012-10-21 07:51 ` Magnus Hagander <magnus@hagander.net> 0 siblings, 0 replies; 2+ messages in thread From: Magnus Hagander @ 2012-10-21 07:51 UTC (permalink / raw) To: Karl Denninger <karl@denninger.net>; +Cc: pgsql-performance On Sat, Oct 20, 2012 at 3:10 AM, Karl Denninger <karl@denninger.net> wrote: > Am I reading this correctly -- it appears that if SSL negotiation is enabled > for a connection (say, when using pg_basebackup over a WAN) that compression > is automatically used (provided it is supported on both ends)? That would depend on the OpenSSL defaults, I believe. Pretty sure you can configure that system wide. > Is there a way to check and see if it is on for a given connection? You can use PQgetssl() and then use OpenSSL functions to get the info from there. I'm not sure exactly how, but it would surprise me if it's not possible. -- Magnus Hagander Me: http://www.hagander.net/ Work: http://www.redpill-linpro.com/ ^ permalink raw reply [nested|flat] 2+ messages in thread
end of thread, other threads:[~2012-10-21 07:51 UTC | newest] Thread overview: 2+ messages (download: mbox mbox.gz follow: Atom feed) -- links below jump to the message on this page -- 2012-10-20 01:10 Connection Options -- SSL already uses compression? Karl Denninger <karl@denninger.net> 2012-10-21 07:51 ` Magnus Hagander <magnus@hagander.net>
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