t_close(3N)           (Networking Support Utilities)            t_close(3N)


   NAME
         tclose - close a transport endpoint

   SYNOPSIS
         #include <tiuser.h>

         int tclose(fd)
         int fd;

   DESCRIPTION
         The tclose 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,
         tclose closes the file associated with the transport endpoint.

         tclose should be called from the TUNBND state [see tgetstate(3N)].
         However, this function does not check state information, 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; the close will be abortive if no other process has
         that file open, and will break any transport connection that may be
         associated with that endpoint.

         On failure, terrno may be set to the following:

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

   SEE ALSO
         t_getstate(3N), t_open(3N), t_unbind(3N).
         Programmer's Guide: Networking Interfaces.

   DIAGNOSTICS
         tclose returns 0 on success and -1 on failure and terrno is set to
         indicate the error.

















   7/91                                                                 Page 1