>string</span><span class="special">&gt;</span> <span class="identifier">s</span><span class="special">;</span>

        <span class="comment">// This starts a new operation to read and echo a line</span>
        <span class="keyword">void</span> <span class="keyword">operator</span><span class="special">()()</span>
        <span class="special">{</span>
            <span class="comment">// If a line is not sent and received within 30 seconds, then</span>
            <span class="comment">// the connection 