(Inherited from <code class="computeroutput"><span class="identifier">http</span><span class="special">::</span><span class="identifier">basic_parser</span></code>)
</p>
<p>
- <a class="indexterm" name="idm45886644665616"></a>
+ <a class="indexterm" name="idm45873493836720"></a>
Returns the optional value of Content-Length
if known.
</p>