sess = new libtorrent::session(libtorrent::fingerprint("AT", 0, 0, 0, 1), std::pair<int, int>(cfg->torrent_port_low(), cfg->torrent_port_high()));
        libtorrent::session_settings s = libtorrent::min_memory_usage();
        sess->set_alert_mask(libtorrent::alert::error_notification | libtorrent::alert::storage_notification | libtorrent::alert::progress_notification);
        sess->set_alert_dispatch(libtorrent_alert_dispatcher);
        if(cfg->torrent_seed())
        {
            if(cfg->torrent_speed_up() > 0)
                s.upload_rate_limit = cfg->torrent_speed_up()*1024;
        }
        else
            s.upload_rate_limit = 1024*30;
        if(cfg->torrent_speed_down() > 0)
            s.download_rate_limit = cfg->torrent_speed_down() * 1024;
        QNetworkProxyQuery npq(QUrl("http://www.google.com"));
        QList<QNetworkProxy> listOfProxies = QNetworkProxyFactory::systemProxyForQuery(npq);
        if(!listOfProxies.empty())
        {
            libtorrent::proxy_settings ps;
            ps.hostname = listOfProxies.begin()->hostName().toStdString();
            ps.port = listOfProxies.begin()->port();
            ps.password = listOfProxies.begin()->password().toStdString();
            ps.username = listOfProxies.begin()->user().toStdString();
            if(listOfProxies.begin()->type() == QNetworkProxy::NoProxy)
                ps.type = ps.none;
            else if(listOfProxies.begin()->type() == QNetworkProxy::Socks5Proxy)
            {
                if(!ps.username.empty() && !ps.password.empty())
                    ps.type = ps.socks5_pw;
                else
                    ps.type = ps.socks5;
            }
            else if(listOfProxies.begin()->type() == QNetworkProxy::HttpProxy)
            {
                if(!ps.username.empty() && !ps.password.empty())
                    ps.type = ps.http_pw;
                else
                    ps.type = ps.http;
            }
            sess->set_proxy(ps);
        }
        if(cfg->torrent_pex())
            sess->add_extension(&libtorrent::create_ut_pex_plugin);
        sess->add_extension(&libtorrent::create_ut_metadata_plugin);
        if(cfg->torrent_dht())
            sess->start_dht();
        else
            sess->stop_dht();
        if(cfg->torrent_upnp())
        {
            up = sess->start_upnp();
            npmp = sess->start_natpmp();
            sess->start_lsd();
        }
        else
        {
            sess->stop_upnp();
            sess->stop_natpmp();
            sess->stop_lsd();
        }
        sess->set_settings(s);