| From: | Oliver Jowett <oliver(at)opencloud(dot)com> |
|---|---|
| To: | Larry Rosenman <ler(at)lerctr(dot)org> |
| Cc: | 'Andrew Dunstan' <andrew(at)dunslane(dot)net>, 'Bruce Momjian' <pgman(at)candle(dot)pha(dot)pa(dot)us>, 'Rocco Altier' <RoccoA(at)Routescape(dot)com>, 'PostgreSQL-development' <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [COMMITTERS] pgsql: Add GUC variables to control keep-alive |
| Date: | 2005-07-31 00:41:56 |
| Message-ID: | 42EC1E54.5040808@opencloud.com |
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| Lists: | pgsql-committers pgsql-hackers |
Larry Rosenman wrote:
> I think Tom's fix to use IPPROTO_TCP will fix firefly.
Ah, I forgot about the "we'll just use IP protocol numbers as socket
option levels" behaviour (BSD-derived?). My Linux man page only talks
about SOL_TCP, but I have run into this before and should have
remembered.. my bad.
per my linux/socket.h:
> /* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */
> #define SOL_IP 0
> /* #define SOL_ICMP 1 No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */
> #define SOL_TCP 6
(I won't get into why using wire-level-protocol constants for syscall
option numbering is a bad idea.. :)
-O
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