ticlts(7)

NAME
     ticlts, ticots, ticotsord - loopback transport providers

SYNOPSIS
     #include <ticlts.h>
     #include <ticots.h>
     #include <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,''
     i.e., 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(3N)):

          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(3N)):
            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(3N)):
            TCOO_NOPEER              no listener on destination address
            TCOO_PEERNOROOMONQ       peer has no room on connect queue
            TCOO_PEERBADSTATE        peer in wrong state
            TCOO_PEERINITIATED       peer-initiated disconnect
            TCOO_PROVIDERINITIATED   provider-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 header
     files 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. The use of ticlts and ticots
     is encouraged.

     ticotsord supports the same service type (T_COTSORD) supported by the
     TCP/IP model.  The use of ticotsord is discouraged except for reasons of
     compatibility.

FILES
     /dev/ticlts
     /dev/ticots
     /dev/ticotsord