T_RCVREL(3NSL)T_RCVREL(3NSL)NAMEt_rcvrel - acknowledge receipt of an orderly release indication
SYNOPSIS
#include <xti.h>
int t_rcvrel(int fd);
DESCRIPTION
This routine is part of the XTI interfaces which evolved from the TLI
interfaces. XTI represents the future evolution of these interfaces.
However, TLI interfaces are supported for compatibility. When using a
TLI routine that has the same name as an XTI routine, the tiuser.h
header file must be used. Refer to the TLI COMPATIBILITY section for
a description of differences between the two interfaces.
This function is used to receive an orderly release indication for the
incoming direction of data transfer. The argument fd identifies the
local transport endpoint where the connection exists. After receipt of
this indication, the user may not attempt to receive more data by means
of t_rcv(3NSL) or t_rcvv(). Such an attempt will fail with t_error set
to TOUTSTATE. However, the user may continue to send data over the con‐
nection if t_sndrel(3NSL) has not been called by the user. This func‐
tion is an optional service of the transport provider, and is only sup‐
ported if the transport provider returned service type T_COTS_ORD on
t_open(3NSL) or t_getinfo(3NSL). Any user data that may be associated
with the orderly release indication is discarded when t_rcvrel() is
called.
RETURN VALUES
Upon successful completion, a value of 0 is returned. Otherwise, a
value of -1 is returned and t_errno is set to indicate an error.
VALID STATES
T_DATAXFER, T_OUTREL.
ERRORS
On failure, t_errno is set to one of the following:
TBADF
The specified file descriptor does not refer to a trans‐
port endpoint.
TLOOK
An asynchronous event has occurred on this transport
endpoint and requires immediate attention.
TNOREL
No orderly release indication currently exists on the
specified transport endpoint.
TNOTSUPPORT
This function is not supported by the underlying trans‐
port provider.
TOUTSTATE
The communications endpoint referenced by fd is not in
one of the states in which a call to this function is
valid.
TPROTO
This error indicates that a communication problem has
been detected between XTI and the transport provider for
which there is no other suitable XTI error (t_errno).
TSYSERR
A system error has occurred during execution of this
function.
TLI COMPATIBILITY
The XTI and TLI interface definitions have common names but use differ‐
ent header files. This, and other semantic differences between the two
interfaces are described in the subsections below.
Interface Header
The XTI interfaces use the header file, xti.h. TLI interfaces should
not use this header. They should use the header:
#include<tiuser.h>
Error Description Values
The t_errno values that can be set by the XTI interface and cannot be
set by the TLI interface are:
TPROTO
TOUTSTATE
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌───────────────┬─────────────────┐
│ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├───────────────┼─────────────────┤
│MT Level │ Safe │
└───────────────┴─────────────────┘
SEE ALSOt_getinfo(3NSL), t_open(3NSL), t_sndrel(3NSL), attributes(5)
May 7, 1998 T_RCVREL(3NSL)
