NAME

t_sndrel − Initiate an endpoint connect orderly release

SYNOPSIS

#include <xti.h>
int t_sndrel(
        int fd );

LIBRARY

XTI Library (libxti.a)

STANDARDS

Interfaces documented on this reference page conform to industry standards as follows:

t_sndrel():  XNS4.0, XNS5.0

Refer to the standards(5) reference page for more information about industry standards and associated tags. 

PARAMETERS

The following table summarizes the relevance of input parameter data before and after t_sndrel() is called:

Notes to Table:

yThis is a meaningful parameter. 

nThis is not a meaningful parameter. 

fdSpecifies a file descriptor returned by the t_open() function that identifies a local transport endpoint where an orderly release is wanted. 

DESCRIPTION

The t_sndrel() XTI function is used in connection-oriented mode to initiate an orderly release at a transport endpoint specified by a file descriptor previously returned by the t_open() function. 

After this orderly release is indicated, the transport user should not try to send more data through that transport endpoint; an attempt to send more data to a released transport endpoint may block continuously. However, a transport user may continue to receive data over the connection until an orderly release indication is received. 

The t_sndrel() function should not be used unless the servtype type-of-service returned by the t_open() or t_getinfo() function is T_COTS_ORD (supports connection-mode service with the optional orderly release facility). 

RETURN VALUES

Upon successful completion, a value of 0 (zero) is returned. Otherwise, a value of -1 is returned and t_errno is set to indicate an error. 

ERRORS

If the t_sndrel() function fails, t_errno may be set to one of the following values:

[TBADF]
File descriptor fd does not refer to a valid transport endpoint. 

[TFLOW]
Asynchronous mode is indicated because O_NONBLOCK was set, but the transport provider cannot accept a release because of flow−control restrictions.

[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 t_sndrel() function was issued in the wrong sequence at the transport endpoint specified by the fd parameter. 

[TSYSERR]
A system error occurred during execution of this function.

[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(t_errno). 

VALID STATES

The t_sndrel() function can be called only in the T_DATAXFER and T_INREL transport provider states. 

SEE ALSO

Functions: t_getinfo(3), t_open(3), t_rcvrel(3)

Standards: standards(5)

Network Programmer’s Guide