Date: Mon, 27 Aug 2007 16:05:26 -0700 (PDT) From: Weiguang Shi <wgshizz@yahoo.com> To: freebsd-net@freebsd.org Subject: nc captures 1024 bytes Message-ID: <954767.6972.qm@web43139.mail.sp1.yahoo.com>
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Hi,=0A=0AMy system is FreeBSD 6.2. I sent a UDP datagram of 1464 bytes to p=
ort =0A1234 where nc was waiting=0A % nc -n -u -l 1234 >tt=0A=0AAfterwar=
ds, the size of tt, however, was only 1024 bytes.=0A=0AI noticed this piec=
e of code in nc=0A=0A341 if (uflag) {=0A342 =
int rv, plen;=0A343 =
char buf[8192];=0A344 struct sockaddr_sto=
rage z;=0A345 =0A346 len =3D sizeof(z);=0A3=
47 plen =3D jflag ? 8192 : 1024;=0A348 =
rv =3D recvfrom(s, buf, plen, MSG_PEEK,=0A349 =
(struct sockaddr *)&z, &len);=0A350 =
if (rv < 0)=0A351 =
err(1, "recvfrom");=0A=0AWhy 1024 instead of something like 1500=
-20-8=3D1472?=0A=0AThanks.=0AWei=0A=0A=0A=0A=0A =0A__________________=
__________________________________________________________________=0AMoody =
friends. Drama queens. Your life? Nope! - their life, your story. Play Sims=
Stories at Yahoo! Games.=0Ahttp://sims.yahoo.com/
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