Date: Mon, 5 Dec 2011 13:00:18 +0100 From: =?iso-8859-1?Q?Michael_T=FCxen?= <Michael.Tuexen@lurchi.franken.de> To: jyl_2006 <yilinjing2006@gmail.com> Cc: freebsd-net@freebsd.org Subject: Re: the return value of sctp_connectx do not match any error Message-ID: <C5C720EB-1EA7-432A-B34E-3BD558C9BC4F@lurchi.franken.de> In-Reply-To: <1323054646502-5047743.post@n5.nabble.com> References: <1322919283456-5044536.post@n5.nabble.com> <76108404-D722-48D0-AAAA-F35B77F5CFCF@lurchi.franken.de> <1322966561294-5045598.post@n5.nabble.com> <F9593CD9-520A-49D4-9093-7DA02DDEE521@lurchi.franken.de> <1323000072198-5046113.post@n5.nabble.com> <ED9B11CB-4442-44C2-86EC-A2F7AC86C8E4@lurchi.franken.de> <1323001847851-5046165.post@n5.nabble.com> <3E25BC69-1FC8-487E-BBAD-8BAF2552623B@lurchi.franken.de> <1323004488998-5046216.post@n5.nabble.com> <F2E9EABF-175E-418C-8E52-0DDF4BF483F0@lurchi.franken.de> <1323054646502-5047743.post@n5.nabble.com>
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On Dec 5, 2011, at 4:10 AM, jyl_2006 wrote:
> This time, the program you provide work perfectly.
> But when I use another program to test, the result
> is"SCTP_GET_LOCAL_ADDRESS:no such file or directory".
This means that you are using a one-to-many style socket =
(SOCK_SEQPACKET)
and you provide an association identifier which does not belong
to any association (anymore).
>=20
> /*My own program have the same set with the program you provide, that =
means
> the ip address is the same and both programs have same "Server to be
> connected" .
> The "siz" refered in the following code is different with the value I =
get
> from my another program*/
>=20
> if (getsockopt(_sctp_socket, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDRESSES, =
addrs,
> &siz) !=3D 0) {=20
> perror("SCTP_GET_LOCAL_ADDRESSES");=20
> return (-1);=20
> }=20
> printf("siz =3D %u.\n", siz);
>=20
> As far as I know, then getsockopt is fail, the return value is -1, and =
the
> errno is set as one of following values 1.EBADF, 2.ENOTSOCK, =
3.ENOPROTOOPT
> 4.EFAULT, 5.EINVAL . In my own program I use return_value =3D
This is from the man page. In case of SCTP socket it seems to miss some
error codes...
> getsockopt(_sctp_socket, IPPROTO_SCTP, SCTP_GET_LOCAL_ADDRESSES, =
addrs,
> &siz), the value of return_value is -1, so it means an error happened =
and
> errno will be set. A strange thing happens, the errno is not the =
values
> refered above.
So which one is it? The man page seems to need some update.
Best regards
Michael
>=20
> Thanks.
>=20
> --
> View this message in context: =
http://freebsd.1045724.n5.nabble.com/the-return-value-of-sctp-connectx-do-=
not-match-any-error-tp5041952p5047743.html
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>=20
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