Date: Tue, 10 Feb 2004 08:53:19 +0000 From: Colin Percival <colin.percival@wadham.ox.ac.uk> To: Danny Braniss <danny@cs.huji.ac.il> Cc: freebsd-net@freebsd.org Subject: Re: TTCP/RFC1644 problem Message-ID: <6.0.1.1.1.20040210084851.03805a78@imap.sfu.ca> In-Reply-To: <E1AqTJk-0009aT-Ea@cs.huji.ac.il> References: <E1AqTJk-0009aT-Ea@cs.huji.ac.il>
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At 08:32 10/02/2004, you wrote: >with sysctl net.inet.tcp.rfc1644 = 0, the transaction uses only 6 packets >and it's less than 1 sec, setting net.inet.tcp.rfc1644 to 1 uses >8 packets and takes more than 1 sec. > >with net.inet.tcp.rfc1644 = 1: > No. Time Source Destination Protocol Info > 1 > 0.000000 132.65.80.32 132.65.16.103 TCP 4108 > > 255 [FIN, SYN, PSH] Seq=967743282 Ack=0 Win=57600 Len=25 132.65.80.32 -> 132.65.16.103: "I'm trying to use TTCP. Here's my request." > 2 > 0.000036 132.65.16.103 132.65.80.32 TCP 255 > >4108 [SYN, ACK] Seq=99082279 Ack=967743283 Win=57344 Len=0 132.65.16.103 -> 132.65.80.32: "Uh, hello. I don't know what TTCP is, could you try saying something I understand?" Whereupon 132.65.80.32 reverts to normal behaviour, and uses the same 6 packets as it would if TTCP were disabled. Colin Percival
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