NAME
	dgd_port_number

SYNOPSIS
	num dgd_port_number(obj)

DESCRIPTION
	The remote TCP port number of the connection associated with
	the argument `obj' is returned.

	This function can only be called if LPMOO has been built with
	networking support. Otherwise, E_PERM will be returned.

	The caller of this function must either be a wizard or own the
	connection in question.