.\" Copyright (c) 1990, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
.\" %sccs.include.redist.man%
.\" @(#)cltp.4 8.1 (Berkeley) %G%
Connectionless Transport Protocol
.Fd #include <sys/socket.h>
.Fd #include <netiso/iso.h>
.Fn socket AF_ISO SOCK_DGRAM 0
is a simple, unreliable datagram protocol which is accessed
sockets are connectionless, and are
call may also be used to fix the destination for future
packets (in which case the
system calls may be used).
address formats are identical to those used by TP.
provides a service selector in addition
space is separate from the TP selector space (i.e. a
network level may be used with
A socket operation may fail with one of the following errors returned:
.Bl -tag -width [EADDRNOTAVAIL]
when trying to establish a connection on a socket which
already has one, or when trying to send a datagram with the destination
address specified and the socket is already connected;
when trying to send a datagram, but
no destination address is specified, and the socket hasn't been
when the system runs out of memory for
an internal data structure;
is made to create a socket with a selector which has already been
when an attempt is made to create a
socket with a network address for which no network interface