>url</code>.</p>
<p>The <code>Host</code> header for the request will be set to the value
<a href="dart-core/Uri/host.html">Uri.host</a>:<a href="dart-core/Uri/port.html">Uri.port</a> from <code>url</code> (if <code>url.host</code> is an IP address, it will
still be used in the <code>Host</code> header). This can be overridden through the
<a href="dart-io/HttpClientRequest-class.html">HttpClientRequest</a> interface before the request is sent.</p>
<p>For additional information on the sequence of events duri