<a name="beast.ref.boost__beast__http__basic_parser.upgrade"></a><a class="link" href="upgrade.html" title="http::basic_parser::upgrade">http::basic_parser::upgrade</a>
</h5></div></div></div>
<p>
- <a class="indexterm" name="idm45886652920624"></a>
+ <a class="indexterm" name="idm45873502106704"></a>
Returns <code class="computeroutput"><span class="keyword">true</span></code>
if the message is an upgrade message.
</p>