<strong>on_bitfield</strong> (bitfield const&amp; <em>/*bitfield*/</em>);
   virtual bool <strong>on_have_none</strong> ();
   virtual bool <strong>on_request</strong> (peer_request const&amp;);
   virtual bool <strong>on_interested</strong> ();
   virtual bool <strong>on_have_all</strong> ();
   virtual bool <strong>on_allowed_fast</strong> (piece_index_t);
   virtual bool <strong>on_not_interested</strong> ();
   virtual bool <strong>on_unchoke</strong> ();
   virtual bool <strong>on_piece</strong> (peer_