{
{   The purpose of this procedure is to get the current
{ status of the socket with respect to the ability to
{ send or receive data on the socket. The number of bytes
{ of data pending receive is returned. However, the caller
{ should not rely on the returned status as the next task
{ doing a send or receive may consume the available resources.
{
{       NLP$UDP_GET_SOCKET_STATUS (GLOBAL_SOCKET_ID,
{             CLEAR_TO_SEND, DATA_PENDING_RECEIVE, STATUS)
{
{ GLOBAL_SOCKET_ID: (input) This parameter specifies the
{       global socket identifier.
{
{ CLEAR_TO_SEND: (output) This parameter is set to TRUE
{       if there is non-zero outbound capacity present on
{       any channel connection associated with the socket.
{
{ DATA_PENDING_RECEIVE: (output) This parameter is set to TRUE
{       if there is a complete message pending receive and the
{       receive queue is empty.
{
{ STATUS: (output) This parameter specifies the request status.
{       CONDITIONS:
{             nae$sk_socket_terminated
{
