x11r4 man page for t_close

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

NAME
       t_close - close a transport endpoint

SYNOPSIS
       #include <xti.h>

       int t_close(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.

       The  t_close() function informs the transport provider that the user is finished with the transport endpoint specified by fd, and frees any
       local library resources associated with the endpoint. In addition, t_close() closes the file associated with the transport endpoint.

       The function t_close() should be called from the T_UNBND state. See t_getstate(3NSL). However, this function does not check state  informa-
       tion,  so  it  may  be called from any state to close a transport endpoint. If this occurs, the local library resources associated with the
       endpoint will be freed automatically.  In addition, close(2) will be issued for that file descriptor; if there are no other descriptors	in
       this process or in another process which references the communication endpoint, any connection that may be associated with that endpoint is
       broken. The connection may be terminated in an orderly or abortive manner.

       A t_close() issued on a connection endpoint may cause data previously sent, or data not yet received, to be lost. It is the  responsibility
       of the transport user to ensure that data is received by the remote peer.

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_UNBND

ERRORS
       On failure, t_errno is set to the following:

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

       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 value that can be set by the XTI interface and cannot be set by the TLI interface is:

       TPROTO

ATTRIBUTES
       See attributes(5)  for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |MT Level		     |Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       close(2), t_getstate(3NSL), t_open(3NSL), t_unbind(3NSL), attributes(5)

SunOS 5.10							    7 May 1998							     t_close(3NSL)