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  27 <a name="beast.ref.boost__beast__http__empty_body.size"></a><a class="link" href="size.html" title="http::empty_body::size">http::empty_body::size</a>
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  29 <p>
  30           <a class="indexterm" name="idm45873500387312"></a>
  31 Returns the payload size of the body.
  32         </p>
  33 <h6>
  34 <a name="beast.ref.boost__beast__http__empty_body.size.h0"></a>
  35           <span class="phrase"><a name="beast.ref.boost__beast__http__empty_body.size.synopsis"></a></span><a class="link" href="size.html#beast.ref.boost__beast__http__empty_body.size.synopsis">Synopsis</a>
  36         </h6>
  37 <pre class="programlisting"><span class="keyword">static</span>
  38 <span class="identifier">std</span><span class="special">::</span><span class="identifier">uint64_t</span>
  39 <span class="identifier">size</span><span class="special">(</span>
  40     <span class="identifier">value_type</span><span class="special">);</span>
  41 </pre>
  42 <h6>
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  45         </h6>
  46 <p>
  47           When this body is used with <a class="link" href="../boost__beast__http__message/prepare_payload.html" title="http::message::prepare_payload"><code class="computeroutput"><span class="identifier">http</span><span class="special">::</span><span class="identifier">message</span><span class="special">::</span><span class="identifier">prepare_payload</span></code></a>, the Content-Length
  48           will be set to the payload size, and any chunked Transfer-Encoding will
  49           be removed.
  50         </p>
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