From owner-freebsd-questions  Sun May  6 10: 4:30 2001
Delivered-To: freebsd-questions@freebsd.org
Received: from brainlink.com (mail.brainlink.com [149.2.32.129])
	by hub.freebsd.org (Postfix) with ESMTP id 9AA5537B422
	for <freebsd-questions@freebsd.org>; Sun,  6 May 2001 10:04:26 -0700 (PDT)
	(envelope-from spork@gronim.com)
Received: from [208.41.77.198] (HELO gronim.com)
  by brainlink.com (CommuniGate Pro SMTP 3.3.2)
  with ESMTP id 6257410 for freebsd-questions@freebsd.org; Sun, 06 May 2001 13:04:00 -0400
Received: (from spork@localhost)
	by gronim.com (8.11.3/8.11.0) id f46H12i65147
	for freebsd-questions@freebsd.org; Sun, 6 May 2001 13:01:02 -0400 (EDT)
	(envelope-from spork)
Date: Sun, 6 May 2001 13:01:02 -0400
From: Spike Gronim <william@brainlink.com>
To: freebsd-questions@freebsd.org
Subject: bind() on FreeBSD
Message-ID: <20010506130102.A65011@spike.gronim.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.2.5i
Sender: owner-freebsd-questions@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

Hey.

	The attached code snippet works correctly on Linux but not FreeBSD. On
a FreeBSD system with a configured lo0, it says 'Can't assign requested
address'. 'man errno' says that EADDRNOTAVAIL "Normally results from an
attempt to create a socket with an address on on this machine." Can anybody
help me diagnose this? Please CC directly to me, as I am not subscribed to the
list. Thank you. 

FreeBSD/i386:
12:56 spike:~ > ifconfig lo0
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
        inet 127.0.0.1 netmask 0xff000000 
12:56 spike:~ > ./test 
Binding to: 127.0.0.1 (7697)
Bind error: 'Can't assign requested address'
12:56 spike:~ > uname -a
FreeBSD spike.gronim.com 4.3-STABLE FreeBSD 4.3-STABLE #1: Mon Apr 23 06:51:11
EDT 2001     root@spike.gronim.com:/2/obj/3/src/sys/ZALEM4  i386
12:56 spike:~ > 


Linux/i386:
12:59 ernie > ifconfig lo
lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:3924  Metric:1
          RX packets:1126102 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1126102 errors:0 dropped:0 overruns:0 carrier:0
          Collisions:0 

12:59 ernie > ./test 
Binding to: 127.0.0.1 (7697)
12:59 ernie > uname -a
Linux ernie 2.2.16 #1 SMP Fri Jun 9 13:16:05 EST 2000 i686 unknown
12:59 ernie > 



-- 


	--Spike Gronim
	  gronimw@stuy.edu

	"Oh yes?  An obscene triangle which, has more courage than the word."


test.c:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>

extern int errno;

int main() {
	int ret, listenfd;
	struct sockaddr_in sai;
	
        sai.sin_family = AF_INET;
	inet_aton("127.0.0.1",&sai.sin_addr);
	sai.sin_port = htons(7697);

	printf("Binding to: %s (%d)\n",
		inet_ntoa(sai.sin_addr),
		ntohs(sai.sin_port));
	
	listenfd = socket(PF_INET, SOCK_STREAM, 0);

	ret = bind(listenfd, (struct sockaddr *)&sai, 
		sizeof(struct sockaddr_in));
	if(ret == -1) {
		printf("Bind error: '%s'\n",strerror(errno));
		exit(1);
	}

	ret = listen(listenfd, 5);
	

	return 0;
}




To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-questions" in the body of the message