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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
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