e</strong>  = 2_bit;
   static constexpr feature_flags_t <strong>dht_request_feature</strong>  = 3_bit;
   static constexpr feature_flags_t <strong>alert_feature</strong>  = 4_bit;
   static constexpr feature_flags_t <strong>unknown_torrent_feature</strong>  = 5_bit;
};
</pre>
<a name="implemented_features()"></a><span class="report-issue">[<a href="http://github.com/arvidn/libtorrent/issues/new?title=docs:plugin%3A%3A%5Bimplemented_features%28%29%5D&labels=documentation&body=Documentation+under+heading+%22