ticlts(7D)							      Devices								ticlts(7D)

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_DEFAULTAD-
       DRSZ. 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)

SunOS 5.10							    3 Jul 1990								ticlts(7D)