code: public static boolean publishPort(final OtpLocalNode node)
              throws IOException {
          OtpTransport s = null;
  
          s = r4_publish(node);
  
          node.setEpmd(s);
  
          return s != null;
      }
docs: Register with Epmd, so that other nodes are able to find and connect to
  it.
  
  @param node
  the server node that should be registered with Epmd.
  
  @return true if the operation was successful. False if the node was
  already registered.
  
  @exception java.io.IOException
  if there was no response from the name server.