hpux man page for t_rcvuderr

t_rcvuderr(3)						     Library Functions Manual						     t_rcvuderr(3)

NAME
       t_rcvuderr() - receive a unit data error indication

SYNOPSIS
DESCRIPTION
       The function is used in connectionless mode to receive information concerning an error on a previously sent data unit. This function should
       only be issued following a unit data error indication.  It informs the transport user that a data unit with a specific destination  address
       and  protocol  options  produced  an error.  The argument fd identifies the local transport endpoint through which the error report will be
       received.  uderr points to a type structure used to specify the protocol address, protocol options, and the nature of the error	associated
       with the data unit sent through the transport endpoint specified by the fd parameter.  The structure has the following members:

       The type structure is defined in the or header file.  This structure, which is used to define buffer parameters, has the following members:

       maximum byte length of the data buffer

       actual byte length of data written to buffer

       points to buffer location

       The maxlen field of addr and opt must be set before calling this function to indicate the maximum size of the buffer for each.

       On  return from this call, the addr structure specifies the destination protocol address of the erroneous data unit the opt structure iden-
       tified protocol-specific options that were associated with the data unit and error specifies a protocol dependent error code.

       If the user does not care to identify the data unit that produced an error, uderr may be set to a null pointer, and will simply	clear  the
       error indication without reporting any information to the user.

   Valid States
   Fork Safety
       is not fork-safe.

RETURN VALUE
       Upon successful completion, a value of 0 is returned.  Otherwise, a value of -1 is returned and is set to indicate the error.

ERRORS
       On failure, is set to one of the following:

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

       [TNOUDERR]	   No unit data error indication currently exists at the specified transport endpoint.

       [TBUFOVFLW]	   The	number of bytes allocated for the incoming protocol address or options information is not sufficient to store that
			   information.  The unit data error information to be returned in uderr will be discarded.

       [TNOTSUPPORT]	   This function is not supported by the underlying transport provider.

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

       [TPROTO] 	   (XTI only) This error indicates that a communication problem has been detected between XTI and the  transport  provider
			   for which there is no other suitable XTI (

SEE ALSO
       t_look(3), t_rcvudata(3), t_sndudata(3), thread_safety(5).

STANDARDS CONFORMANCE
																     t_rcvuderr(3)