CLTP

Section: Devices and Network Interfaces (4)
Index Return to Main Contents

BSD mandoc
 

NAME

cltp - ISO Connectionless Transport Protocol  

SYNOPSIS

Fd #include <sys/socket.h> Fd #include <netiso/iso.h> Ft int Fn socket AF_ISO SOCK_DGRAM 0  

DESCRIPTION

CLTP is a simple, unreliable datagram protocol which is accessed via the SOCK_DGRAM abstraction for the ISO protocol family. CLTP sockets are connectionless, and are normally used with the sendto and recvfrom calls, though the connect(2) call may also be used to fix the destination for future packets (in which case the recv(2) or read(2) and send(2) or write(2) system calls may be used).

CLTP address formats are identical to those used by TP. In particular CLTP provides a service selector in addition to the normal ISO NSAP Note that the CLTP selector space is separate from the TP selector space (i.e. a CLTP selector may not be ``connected'' to a TP selector).

Options at the CLNP network level may be used with CLTP see clnp(4).  

DIAGNOSTICS

A socket operation may fail with one of the following errors returned:

Bq Er EISCONN
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;
Bq Er ENOTCONN
when trying to send a datagram, but no destination address is specified, and the socket hasn't been connected;
Bq Er ENOBUFS
when the system runs out of memory for an internal data structure;
Bq Er EADDRINUSE
when an attempt is made to create a socket with a selector which has already been allocated;
Bq Er EADDRNOTAVAIL
when an attempt is made to create a socket with a network address for which no network interface exists.

 

SEE ALSO

getsockopt(2), recv(2), send(2), socket(2), intro(4), iso(4), clnp(4)  

HISTORY

The protocol implementation Ud
 

Index

NAME
SYNOPSIS
DESCRIPTION
DIAGNOSTICS
SEE ALSO
HISTORY

This document was created by man2html, using the manual pages.
Time: 06:48:34 GMT, May 19, 2025