From owner-freebsd-net@FreeBSD.ORG  Thu Mar  1 12:29:11 2007
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
X-Original-To: freebsd-net@freebsd.org
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id 6B82016A401
	for <freebsd-net@freebsd.org>; Thu,  1 Mar 2007 12:29:11 +0000 (UTC)
	(envelope-from citrin@citrin.ru)
Received: from mail.classis.ru (classis.ru [213.248.60.120])
	by mx1.freebsd.org (Postfix) with ESMTP id D5EF213C467
	for <freebsd-net@freebsd.org>; Thu,  1 Mar 2007 12:29:10 +0000 (UTC)
	(envelope-from citrin@citrin.ru)
Received: from citrin (unknown [81.19.65.100])
	(using TLSv1 with cipher AES256-SHA (256/256 bits))
	(No client certificate requested)
	(Authenticated sender: citrin.citrin.ru)
	by mail.classis.ru (Postfix) with ESMTP id A335012279AE
	for <freebsd-net@freebsd.org>; Thu,  1 Mar 2007 15:18:24 +0300 (MSK)
Date: Thu, 1 Mar 2007 15:17:29 +0300
From: Anton Yuzhaninov <citrin@citrin.ru>
X-Mailer: The Bat! (v3.62.14) Professional
Organization: Rambler
X-Priority: 3 (Normal)
Message-ID: <2110071423.20070301151729@citrin.ru>
To: freebsd-net@freebsd.org
MIME-Version: 1.0
Content-Type: multipart/signed; protocol="application/pkcs7-signature";
	micalg=sha1; boundary="----------EA1EE1A83EA702A6"
X-Content-Filtered-By: Mailman/MimeDel 2.1.5
Subject: is setsockopt SO_NOSIGPIPE work?
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 01 Mar 2007 12:29:11 -0000


This is a cryptographically signed message in MIME format.

------------EA1EE1A83EA702A6
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: quoted-printable

Hello.

Is SO_NOSIGPIPE work?

It try to set on socket option SO_NOSIGPIPE but anyway process
received sigpipe.

Test case:

#include <sys/types.h>
#include <sys/socket.h>

#include <netinet/in.h>

#include <signal.h>

#define SERVER_PORT     8000

void
sigpipe(int signo __unused)
{
    printf("SIGPIPE recivied\n");
}

int
main(int argc, char *argv[])
{
    int             s     , c;
    int             on =3D 1;
    socklen_t       slen, c_len;
    struct sockaddr_in serv_addr, client_addr;

    if ((s =3D socket(PF_INET, SOCK_STREAM, 0)) < 0)
        err(1, "socket() failed");

    bzero(&serv_addr, sizeof(serv_addr));
    serv_addr.sin_family =3D AF_INET;
    serv_addr.sin_addr.s_addr =3D htonl(INADDR_LOOPBACK);
    serv_addr.sin_port =3D htons(SERVER_PORT);

    if (bind(s, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
        err(1, "bind() failed");

    if (listen(s, -1) < 0)
        err(1, "listen() failed");

    (void)signal(SIGPIPE, sigpipe);

    for (;;) {
        if ((c =3D accept(s, (struct sockaddr *)&client_addr, &c_len)) < 0)=
 {
            warn("accept() failed");
            continue;
        }
        if (setsockopt(c, SOL_SOCKET, SO_NOSIGPIPE, (void *)&on, sizeof(on)=
) < 0)
            err(1, "setsockopt(SOL_SOCKET, SO_NOSIGPIPE) failed");

        sleep(2);

        if (write(c, "abc", strlen("abc")) < 0)
            warn("first write() failed");
        if (write(c, "\r\n", strlen("\r\n")) < 0)
            warn("second write() failed");

        close(c);
    }
}

Client connect, than disconnect.

server print:

SIGPIPE recivied
a.out: second write() failed: Broken pipe

Is SO_NOSIGPIPE broken, or something wrong in my code?

system:
6.2-STABLE FreeBSD 6.2-STABLE #0: Mon Feb 19 17:07:12 MSK 2007

--=20
WBR,
 Anton Yuzhaninov

------------EA1EE1A83EA702A6--