Tribblix: manual page: t

T_SNDREL(3NSL) Networking Services Library Functions T_SNDREL(3NSL)

NAME

t_sndrel - initiate an orderly release

SYNOPSIS

#include <xti.h>

int t_sndrel(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.

For transport providers of type T_COTS_ORD, this function is used to
initiate an orderly release of the outgoing direction of data
transfer and indicates to the transport provider that the transport
user has no more data to send. The argument fd identifies the local
transport endpoint where the connection exists. After calling
t_sndrel(), the user may not send any more data over the connection.
However, a user may continue to receive data if an orderly release
indication has not been received. For transport providers of types
other than T_COTS_ORD, this function fails with error TNOTSUPPORT.

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_INREL.

ERRORS

On failure, t_errno is set to one of the following:

TBADF
The specified file descriptor does not refer to a
transport endpoint.

TFLOW
O_NONBLOCK was set, but the flow control mechanism
prevented the transport provider from accepting the
function at this time.

TLOOK
An asynchronous event has occurred on this transport
endpoint and requires immediate attention.

TNOTSUPPORT
This function is not supported by the underlying
transport 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
different 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
TLOOK
TOUTSTATE

Notes

Whenever this function fails with t_error set to TFLOW, O_NONBLOCK
must have been set.

ATTRIBUTES