ass="identifier">close_code</span><span class="special">::</span><span class="identifier">normal</span><span class="special">);</span>
</pre>
<p>
        The close function will send a close frame, read and discard incoming message
        data until receiving a close frame, and then shut down the underlying connection
        before returning.
      </p>
<p>
        When a close frame is received by during a read operation, the implementation
        will automatically respond with a close frame and then s