t_close(3)t_close(3)NAMEt_close - Close a transport endpoint.
SYNOPSIS
#include <xti.h>
int t _close(
int fd );
LIBRARY
XTI Library (libxti.a)
STANDARDS
Interfaces documented on this reference page conform to industry stan‐
dards as follows:
t_close(): 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 the input parameter
before and after t_close() is called:
─────────────────────────────────────
Parameter Before Call After Call
─────────────────────────────────────
fd y n
─────────────────────────────────────
Notes to table: This is a meaningful parameter. This is not a meaning‐
ful parameter. Specifies a file descriptor returned by the t_open()
function that identifies a local transport endpoint.
DESCRIPTION
The t_close() XTI function is used in connection-oriented and connec‐
tionless transport service to inform a transport provider that the
transport user has finished with the transport endpoint. The transport
endpoint is specified by a file descriptor previously returned by the
t_open() function. The t_close() function frees any local library
resources associated with the transport endpoint referenced by the file
descriptor.
The t_close() function does not check state information (see the t_get‐
state() function). Consequently, t_close() may be called in any trans‐
port provider state to close an open transport endpoint. When t_close()
executes, local library resources associated with the transport end‐
point are automatically freed. In addition, a close() function is
called for the referenced file descriptor. The close() function aborts
when there are no other file descriptors, in the current or any other
process, that reference the same transport endpoint. When close()
aborts, any connection that is associated with that transport endpoint
is broken.
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 the error.
ERRORS
If the t_close() function fails, t_errno may be set to the following
value: File descriptor fd does not refer to a valid transport endpoint.
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_close() function is intended to be called in the T_UNBND trans‐
port provider state (see the DESCRIPTION section).
SEE ALSO
Functions: t_getstate(3), t_open(3), t_unbind(3)
Standards: standards(5).
Network Programmer's Guide
t_close(3)
