Name of the HTTP Header read by this valve that holds the port
        used by the client to connect to the proxy. If not specified, the
        default of <code>null</code> is used.</p>
      </td></tr><tr><td><code class="attributeName">protocolHeaderHttpsValue</code></td><td>
        <p>Value of the <strong>protocolHeader</strong> to indicate that it is
        an HTTPS request. If not specified, the default of <code>https</code> is
        used.</p>
      </td></tr><tr><td><code class="attributeName">ht