Function netconn_delete

components/net/lwip/lwip-2.1.2/src/api/api_lib.c:232–255

* @ingroup netconn_common * Close a netconn 'connection' and free its resources. * UDP and RAW connection are completely closed, TCP pcbs might still be in a waitstate * after this returns. * * @param conn the netconn to delete * @return ERR_OK if the connection was deleted */

 * @return ERR_OK if the connection was deleted
 */
err_t
netconn_delete(struct netconn *conn)
{
  err_t err;

  /* No ASSERT here because possible to get a (conn == NULL) if we got an accept error */
  if (conn == NULL) {
    return ERR_OK;
  }

#if LWIP_NETCONN_FULLDUPLEX
  if (conn->flags & NETCONN_FLAG_MBOXINVALID) {
    /* Already called netconn_prepare_delete() before */
    err = ERR_OK;
  } else
#endif /* LWIP_NETCONN_FULLDUPLEX */
  {
    err = netconn_prepare_delete(conn);
  }
  if (err == ERR_OK) {
    netconn_free(conn);
  }
  return err;
}

/**
 * Get the local or remote IP address and port of a netconn.