-io/HttpHeaders/AUTHORIZATION-constant.html">AUTHORIZATION</a></li>
        <li><a href="../../dart-io/HttpHeaders/authorizationHeader-constant.html">authorizationHeader</a></li>
        <li><a class="deprecated" href="../../dart-io/HttpHeaders/CACHE_CONTROL-constant.html">CACHE_CONTROL</a></li>
        <li><a href="../../dart-io/HttpHeaders/cacheControlHeader-constant.html">cacheControlHeader</a></li>
        <li><a class="deprecated" href="../../dart-io/HttpHeaders/CONNECTION-constant.html">CONNECTION</a>