99 lines
3.5 KiB
Groff
99 lines
3.5 KiB
Groff
|
.\" Copyright (c) 1983, 1991, 1993
|
||
|
|
.\" The Regents of the University of California. All rights reserved.
|
||
|
|
.\"
|
||
|
|
.\" Redistribution and use in source and binary forms, with or without
|
||
|
|
.\" modification, are permitted provided that the following conditions
|
||
|
|
.\" are met:
|
||
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
||
|
|
.\" notice, this list of conditions and the following disclaimer.
|
||
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
||
|
|
.\" documentation and/or other materials provided with the distribution.
|
||
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
||
|
|
.\" must display the following acknowledgement:
|
||
|
|
.\" This product includes software developed by the University of
|
||
|
|
.\" California, Berkeley and its contributors.
|
||
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
||
|
|
.\" may be used to endorse or promote products derived from this software
|
||
|
|
.\" without specific prior written permission.
|
||
|
|
.\"
|
||
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
||
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
.\" SUCH DAMAGE.
|
||
|
|
.\"
|
||
|
|
.\" $FreeBSD$
|
||
|
|
.\"
|
||
|
|
.Dd December 15, 2006
|
||
|
|
.Dt SCTP_CONNECTX 3
|
||
|
|
.Os
|
||
|
|
.Sh NAME
|
||
|
|
.Nm sctp_connectx
|
||
|
|
.Nd connect an sctp socket with multiple destination addresses.
|
||
|
|
.Sh LIBRARY
|
||
|
|
.Lb libc
|
||
|
|
.Sh SYNOPSIS
|
||
|
|
.In sys/types.h
|
||
|
|
.In sys/socket.h
|
||
|
|
.In sys/sctp.h
|
||
|
|
.Ft int
|
||
|
|
.Fn sctp_connectx "int s" "struct sockaddr *" "int addrcnt"
|
||
|
|
.Sh DESCRIPTION
|
||
|
|
The
|
||
|
|
.Fn sctp_connectx
|
||
|
|
call attempts to initiate an association to a peer SCTP
|
||
|
|
endpoint. The call operates similarly to
|
||
|
|
.Fn connect
|
||
|
|
but it also provides the ability to specify multiple destination
|
||
|
|
addresses for the peer. This allows a fault tolerant method
|
||
|
|
of initiating an association. When one of the peers addresses
|
||
|
|
is unreachable, the subsequent listed addresses will also be used
|
||
|
|
to setup the association with the peer.
|
||
|
|
.Pp
|
||
|
|
The user also needs to consider that any address listed in an
|
||
|
|
.Fn sctp_connectx
|
||
|
|
call is also consider "confirmed".
|
||
|
|
A confirmed address is one in
|
||
|
|
which the SCTP transport will trust is a part of the association
|
||
|
|
and it will not send a confirmation heartbeat to it with
|
||
|
|
a random nonce.
|
||
|
|
.Pp
|
||
|
|
If the peer SCTP stack does not list one or more of
|
||
|
|
the provided addresses in its response message then
|
||
|
|
the extra addresses sent in the
|
||
|
|
.Fn sctp_connectx
|
||
|
|
call will be silently discarded from the association.
|
||
|
|
.Sh RETURN VALUES
|
||
|
|
The call returns 0 on success and -1 upon failure.
|
||
|
|
.Sh ERRORS
|
||
|
|
The
|
||
|
|
.Fn sctp_connectx
|
||
|
|
can return the following errors.
|
||
|
|
.Bl -tag -width Er
|
||
|
|
.It Bq Er EINVAL
|
||
|
|
An address listed has an invalid family or no
|
||
|
|
addresses were provided.
|
||
|
|
.It Bq Er E2BIG
|
||
|
|
The size of the address list exceeds the amount of
|
||
|
|
data provided.
|
||
|
|
.It Bq Er EBADF
|
||
|
|
The argument
|
||
|
|
.Fa s
|
||
|
|
is not a valid descriptor.
|
||
|
|
.It Bq Er ENOTSOCK
|
||
|
|
The argument
|
||
|
|
.Fa s
|
||
|
|
is not a socket.
|
||
|
|
.El
|
||
|
|
.Sh SEE ALSO
|
||
|
|
.Xr sctp 4 ,
|
||
|
|
.Xr connect 2 ,
|
||
|
|
|