Programming Interfaces Guide

Socket-to-XTI/TLI Equivalents

The following table shows approximate equivalents between XTI/TLI interfaces and socket interfaces. The comment field describes the differences. If the comment column is blank, either the interfaces are similar or no equivalent interface exists in either interface.

Table 9–8 TLI and Socket Equivalent Functions


TLI interface	Socket interface	Comments
t_open(3NSL)	socket(3SOCKET)
`–`	socketpair(3SOCKET)
t_bind(3NSL)	bind(3SOCKET)	t_bind(3NSL) sets the queue depth for passive sockets, but bind(3SOCKET) does not. For sockets, the queue length is specified in the call to listen(3SOCKET).
t_optmgmt(3NSL)	getsockopt(3SOCKET) setsockopt(3SOCKET)	t_optmgmt(3NSL) manages only transport options. getsockopt(3SOCKET) and setsockopt(3SOCKET) can manage options at the transport layer, but also at the socket layer and at the arbitrary protocol layer.
t_unbind(3NSL)	`–`
t_close(3NSL)	close(2)
t_getinfo(3NSL)	getsockopt(3SOCKET)	t_getinfo(3NSL) returns information about the transport. getsockopt(3SOCKET) can return information about the transport and the socket.
t_getstate(3NSL)	`-`
t_sync(3NSL)	`-`
t_alloc(3NSL)	`-`
t_free(3NSL)	`-`
t_look(3NSL)	`-`	getsockopt(3SOCKET) with the `SO_ERROR` option returns the same kind of error information as t_look(3NSL)`t_look()`.
t_error(3NSL)	perror(3C)
t_connect(3NSL)	connect(3SOCKET)	You do not need to bind the local endpoint before invoking connect(3SOCKET). Bind the endpoint before calling t_connect(3NSL). You can use connect(3SOCKET) on a connectionless endpoint to set the default destination address for datagrams. You can send data using connect(3SOCKET).
t_rcvconnect(3NSL)	`-`
t_listen(3NSL)	listen(3SOCKET)	t_listen(3NSL) waits for connection indications. listen(3SOCKET) sets the queue depth.
t_accept(3NSL)	accept(3SOCKET)
t_snd(3NSL)	send(3SOCKET)
	sendto(3SOCKET)
	sendmsg(3SOCKET)	sendto(3SOCKET) and sendmsg(3SOCKET) operate in connection mode as well as in datagram mode.
t_rcv(3NSL)	recv(3SOCKET)
	recvfrom(3SOCKET)
	recvmsg(3SOCKET)	recvfrom(3SOCKET) and recvmsg(3SOCKET) operate in connection mode as well as datagram mode.
t_snddis(3NSL)	`-`
t_rcvdis(3NSL)	`-`
t_sndrel(3NSL)	shutdown(3SOCKET)
t_rcvrel(3NSL)	`-`
t_sndudata(3NSL)	sendto(3SOCKET)
	recvmsg(3SOCKET)
t_rcvuderr(3NSL)	`-`
read(2), write(2)	read(2), write(2)	In XTI/TLI you must push the tirdwr(7M) module before calling read(2) or write(2). In sockets, calling read(2) or write(2) suffices.