Date: Thu, 05 Nov 1998 08:06:09 +0100 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Don Lewis <Don.Lewis@tsc.tdk.com> Cc: "Andrey A. Chernov" <ache@nagual.pp.ru>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/usr.sbin/inetd inetd.c Message-ID: <10913.910249569@critter.freebsd.dk> In-Reply-To: Your message of "Wed, 04 Nov 1998 21:59:24 PST." <199811050559.VAA12623@salsa.gv.tsc.tdk.com>
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In message <199811050559.VAA12623@salsa.gv.tsc.tdk.com>, Don Lewis writes: >On Nov 4, 8:58pm, Poul-Henning Kamp wrote: >} Subject: Re: cvs commit: src/usr.sbin/inetd inetd.c >} In message <19981104225055.A17178@nagual.pp.ru>, "Andrey A. Chernov" writes: >} >On Wed, Nov 04, 1998 at 11:39:47AM -0800, Poul-Henning Kamp wrote: >} >> phk 1998/11/04 11:39:47 PST >} > >} >> It will return "ERROR:HIDDEN-USER" for all requests. >} > >} >Just wonder, why? >} >} Makes sendmail connect a bit faster... > >It shouldn't. If nothing is listening on this port, the initial SYN packet >should get a TCP RST as a response, and the client's connect() call should >then return ECONNREFUSED. If inetd is listening, then the client will have >to wait for the initial three-way handshake, the data to be transferred, and >part of the connection teardown. Well, it is (barely) measurably faster on the two busy mailservers I run. The other advantage is that it makes: sysctl -w net.inet.tcp.log_in_vain=1 less noisy on same machines. YMMV -- Poul-Henning Kamp FreeBSD coreteam member phk@FreeBSD.ORG "Real hackers run -current on their laptop." "ttyv0" -- What UNIX calls a $20K state-of-the-art, 3D, hi-res color terminal To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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