allow execution of on_unknown_torrent method in the absence of acti…

…ve torrents

src/session_impl.cpp

@@ -17,6 +17,7 @@ Copyright (c) 2020, Fonic
 Copyright (c) 2020, Paul-Louis Ageneau
 Copyright (c) 2022, Vladimir Golovnev (glassez)
 Copyright (c) 2022, thrnz
+Copyright (c) 2023, Joris Carrier
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -3084,16 +3085,6 @@ namespace {
 			return;
 		}
 
-		// check if we have any active torrents
-		// if we don't reject the connection
-		if (m_torrents.empty())
-		{
-#ifndef TORRENT_DISABLE_LOGGING
-			session_log("<== INCOMING CONNECTION [ rejected, there are no torrents ]");
-#endif
-			return;
-		}
-
 		// figure out which peer classes this is connections has,
 		// to get connection_limit_factor
 		peer_class_set pcs;
@@ -3135,25 +3126,6 @@ namespace {
 			return;
 		}
 
-		// if we don't have any active torrents, there's no
-		// point in accepting this connection. If, however,
-		// the setting to start up queued torrents when they
-		// get an incoming connection is enabled, we cannot
-		// perform this check.
-		if (!m_settings.get_bool(settings_pack::incoming_starts_queued_torrents))
-		{
-			bool has_active_torrent = std::any_of(m_torrents.begin(), m_torrents.end()
-				, [](std::shared_ptr<torrent> const& i)
-				{ return !i->is_torrent_paused(); });
-			if (!has_active_torrent)
-			{
-#ifndef TORRENT_DISABLE_LOGGING
-				session_log("<== INCOMING CONNECTION [ rejected, no active torrents ]");
-#endif
-				return;
-			}
-		}
-
 		m_stats_counters.inc_stats_counter(counters::incoming_connections);
 
 		if (m_alerts.should_post<incoming_connection_alert>())