N" class="constant">
          <span class="name "><a href="dart-io/WebSocketStatus/MISSING_MANDATORY_EXTENSION-constant.html">MISSING_MANDATORY_EXTENSION</a></span>
          <span class="signature">&#8594; const <a href="dart-core/int-class.html">int</a></span>
        </dt>
        <dd>
          
          
  <div>
            <span class="signature"><code>1010</code></span>
          </div>
        </dd>
        <dt id="NO_STATUS_RECEIVED" class="constant">
          <span class="name "><a href="dart-i