TICLTS(4D) Devices 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)