tring and the passive flag
                  has been specified, the resolved endpoints are suitable for local
                  service binding. If an empty string and passive is not specified,
                  the resolved endpoints will use the loopback address.
                </p></dd>
<dt><span class="term">service</span></dt>
<dd><p>
                  A string identifying the requested service. This may be a descriptive
                  name or a numeric string corresponding to a port number. May b