TICLTS(4D) TICLTS(4D)


NAME


ticlts, ticots, ticotsord - loopback transport providers

SYNOPSIS


#include <sys/ticlts.h>


#include <sys/ticots.h>


#include <sys/ticotsord.h>


DESCRIPTION


The devices known as ticlts, ticots, and ticotsord are ``loopback
transport providers,'' that is, stand-alone networks at the transport
level. Loopback transport providers are transport providers in every
sense except one: only one host (the local machine) is ``connected to'' a
loopback network. Loopback transports present a TPI (STREAMS-level)
interface to application processes and are intended to be accessed via
the TLI (application-level) interface. They are implemented as clone
devices and support address spaces consisting of ``flex-addresses,'' that
is, arbitrary sequences of octets of length > 0, represented by a netbuf
structure.


ticlts is a datagram-mode transport provider. It offers (connectionless)
service of type T_CLTS. Its default address size is TCL_DEFAULTADDRSZ.
ticlts prints the following error messages (see t_rcvuderr(3NSL)):

TCL_BADADDR
bad address specification


TCL_BADOPT
bad option specification


TCL_NOPEER
bound


TCL_PEERBADSTATE
peer in wrong state


ticots is a virtual circuit-mode transport provider. It offers
(connection-oriented) service of type T_COTS. Its default address size is
TCO_DEFAULTADDRSZ. ticots prints the following disconnect messages (see
t_rcvdis(3NSL)):

TCO_NOPEER
no listener on destination address


TCO_PEERNOROOMONQ
peer has no room on connect queue


TCO_PEERBADSTATE
peer in wrong state


TCO_PEERINITIATED
peer-initiated disconnect


TCO_PROVIDERINITIATED
provider-initiated disconnect


ticotsord is a virtual circuit-mode transport provider, offering service
of type T_COTS_ORD (connection-oriented service with orderly release).
Its default address size is TCOO_DEFAULTADDRSZ. ticotsord prints the
following disconnect messages (see t_rcvdis(3NSL)):

TCOO_NOPEER
no listener on destination address


TCOO_PEERNOROOMONQ
peer has no room on connect queue


TCOO_PEERBADSTATE
peer in wrong state


TCOO_PEERINITIATED
provider-initiated disconnect


TCOO_PROVIDERINITIATED
peer-initiated disconnect


USAGE


Loopback transports support a local IPC mechanism through the TLI
interface. Applications implemented in a transport provider-independent
manner on a client-server model using this IPC are transparently
transportable to networked environments.


Transport provider-independent applications must not include the headers
listed in the synopsis section above. In particular, the options are
(like all transport provider options) provider dependent.


ticlts and ticots support the same service types (T_CLTS and T_COTS)
supported by the OSI transport-level model.


ticotsord supports the same service type (T_COTSORD) supported by the
TCP/IP model.

FILES


/dev/ticlts


/dev/ticots


/dev/ticotsord

SEE ALSO


t_rcvdis(3NSL), t_rcvuderr(3NSL)


July 3, 1990 TICLTS(4D)