Date: Tue, 11 Apr 2006 16:42:13 +0900 From: JINMEI Tatuya / =?ISO-2022-JP?B?GyRCP0BMQEMjOkgbKEI=?= <jinmei@isl.rdc.toshiba.co.jp> To: Stefan <stefan@sf-net.com> Cc: freebsd-net@freebsd.org Subject: Re: raw ip paket sendto error Message-ID: <y7vslokk17u.wl%jinmei@isl.rdc.toshiba.co.jp> In-Reply-To: <F8D644AB-76D0-49B6-A665-6B459A13F85D@sf-net.com> References: <F8D644AB-76D0-49B6-A665-6B459A13F85D@sf-net.com>
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>>>>> On Mon, 10 Apr 2006 11:40:46 +0200,
>>>>> Stefan <stefan@sf-net.com> said:
> I'm trying to port my little application to the FreeBSD-system and
> encountered some difficults I can't solve. The program is running
> fine on SunOS, OpenBSD, Mac OS X and Debian GNU/Linux so I thought it
> should run fine on FreeBSD too. Maybe I forget something and you can
> help me out?
> The first problem I had was at the function getaddrinfo. If I don't
> submit a hints struct I get an error like this:
> "servname not supported for ai_socktype"
> This is the source part where the error occured:
> if((getaddrinfoError = getaddrinfo(src_addr, src_port, NULL, &src_ai))
> != 0) {
> fprintf(stderr, "Error getaddrinfo (src address): %s\n",
> gai_strerror(getaddrinfoError));
> exit(EXIT_FAILURE);
> }
> When I changed it to use a hint like this:
> struct addrinfo hints;
> hints.ai_family = PF_UNSPEC;
> hints.ai_socktype = SOCK_DGRAM;
> hints.ai_flags = 0;
> hints.ai_protocol = 0;
> hints.ai_addrlen = 0;
> hints.ai_canonname = NULL;
> hints.ai_addr = NULL;
> hints.ai_next = NULL;
> The function runs fine like I expected. Why does this happen on
> FreeBSD systems?
I guess in this case getaddrinfo() tried to match the specified
"service" (port) with a raw socket (for which there is no notion of
"service"), and returned an error.
BTW, when I tried the same test on Solaris 10 and OpenBSD 3.6 (and
NetBSD 2.0.1 for that matter), I saw the same error. So, it seems the
current trend is to require a specific hint, and FreeBSD is not that
special.
JINMEI, Tatuya
Communication Platform Lab.
Corporate R&D Center, Toshiba Corp.
jinmei@isl.rdc.toshiba.co.jp
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