ne primary feature
is that it is notified of all torrents that are added to the <a class="reference external" href="reference-Session.html#session">session</a>,
and can add its own torrent_plugins.</p>
<pre class="literal-block">
struct plugin
{
   virtual feature_flags_t <strong>implemented_features</strong> ();
   virtual std::shared_ptr&lt;torrent_plugin&gt; <strong>new_torrent</strong> (torrent_handle const&amp;, client_data_t);
   virtual void <strong>added</strong> (session_handle const&amp;);
   virt