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t_close(3)
NAME
  t_close - Closes a transport endpoint.

LIBRARY
  XTI Library (libxti.a)

SYNOPSIS
  #include <xti.h>

  int t _close(
  int fd) ;

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

  t_close: XPG4-UNIX

  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:

  y   This is a meaningful parameter.

  n   This is not a meaningful parameter.

  fd  Specifies a file descriptor returned by the t_open() function that
      identifies a local transport endpoint.

VALID STATES
  The t_close() function is intended to be called in the T_UNBND transport
  provider state (see the DESCRIPTION section).

DESCRIPTION
  The t_close() XTI function is used in connection-oriented and
  connectionless 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_getstate() function). Consequently, t_close() may be called in any
  transport provider state to close an open transport endpoint. When
  t_close() executes, local library resources associated with the transport
  endpoint 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:

  [TBADF]   File descriptor fd does not refer to a valid 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(t_errno).

RELATED INFORMATION
  Functions: t_getstate(3), t_open(3), t_unbind(3)