Use the global default.</p>

</td>
</tr>
<tr id="ConnectionPoolSettings-HTTPSettings-H2UpgradePolicy-DO_NOT_UPGRADE">
<td><code><a href="#ConnectionPoolSettings-HTTPSettings-H2UpgradePolicy-DO_NOT_UPGRADE">DO_NOT_UPGRADE</a></code></td>
<td>
<p>Do not upgrade the connection to http2.
This opt-out option overrides the default.</p>

</td>
</tr>
<tr id="ConnectionPoolSettings-HTTPSettings-H2UpgradePolicy-UPGRADE">
<td><code><a href="#ConnectionPoolSettings-HTTPSettings-H2UpgradePolicy-UPGRADE">UPGRADE</a></cod