make connection_type enum an enum class (#1146)

include/libtorrent/bt_peer_connection.hpp

@@ -120,8 +120,8 @@ namespace libtorrent
 		void switch_recv_crypto(std::shared_ptr<crypto_plugin> crypto);
 #endif
 
-		virtual int type() const override
-		{ return peer_connection::bittorrent_connection; }
+		virtual connection_type type() const override
+		{ return connection_type::bittorrent; }
 
 		enum message_type
 		{

include/libtorrent/http_seed_connection.hpp

@@ -59,8 +59,8 @@ namespace libtorrent
 		http_seed_connection(peer_connection_args const& pack
 			, web_seed_t& web);
 
-		virtual int type() const override
-		{ return peer_connection::http_seed_connection; }
+		virtual connection_type type() const override
+		{ return connection_type::http_seed; }
 
 		// called from the main loop when this connection has any
 		// work to do.

include/libtorrent/peer_connection.hpp

@@ -245,6 +245,13 @@ namespace libtorrent
 		peer_connection_hot_members& operator=(peer_connection_hot_members const&);
 	};
 
+	enum class connection_type : std::uint8_t
+	{
+		bittorrent,
+		url_seed,
+		http_seed
+	};
+
 	class TORRENT_EXTRA_EXPORT peer_connection
 		: public peer_connection_hot_members
 		, public bandwidth_socket
@@ -257,14 +264,7 @@ namespace libtorrent
 	friend class torrent;
 	public:
 
-		enum connection_type
-		{
-			bittorrent_connection = 0,
-			url_seed_connection = 1,
-			http_seed_connection = 2
-		};
-
-		virtual int type() const = 0;
+		virtual connection_type type() const = 0;
 
 		enum channels
 		{

include/libtorrent/peer_connection_handle.hpp

@@ -37,6 +37,7 @@ POSSIBILITY OF SUCH DAMAGE.
 #include "libtorrent/peer_id.hpp"
 #include "libtorrent/operations.hpp"
 #include "libtorrent/alert_types.hpp"
+#include "libtorrent/peer_connection.hpp" // for connection_type
 
 namespace libtorrent
 {
@@ -57,7 +58,7 @@ struct TORRENT_EXPORT peer_connection_handle
 		: m_connection(impl)
 	{}
 
-	int type() const;
+	connection_type type() const;
 
 	void add_extension(std::shared_ptr<peer_plugin>);
 

include/libtorrent/web_peer_connection.hpp

@@ -66,8 +66,8 @@ namespace libtorrent
 
 		virtual void on_connected() override;
 
-		virtual int type() const override
-		{ return peer_connection::url_seed_connection; }
+		virtual connection_type type() const override
+		{ return connection_type::url_seed; }
 
 		// called from the main loop when this connection has any
 		// work to do.

src/peer_connection.cpp

@@ -4161,7 +4161,7 @@ namespace libtorrent
 			else m_counters.inc_stats_counter(counters::error_incoming_peers);
 
 #if !defined(TORRENT_DISABLE_ENCRYPTION) && !defined(TORRENT_DISABLE_EXTENSIONS)
-			if (type() == bittorrent_connection && op != op_connect)
+			if (type() == connection_type::bittorrent && op != op_connect)
 			{
 				bt_peer_connection* bt = static_cast<bt_peer_connection*>(this);
 				if (bt->supports_encryption()) m_counters.inc_stats_counter(

src/peer_connection_handle.cpp

@@ -41,7 +41,7 @@ POSSIBILITY OF SUCH DAMAGE.
 namespace libtorrent
 {
 
-int peer_connection_handle::type() const
+connection_type peer_connection_handle::type() const
 {
 	std::shared_ptr<peer_connection> pc = native_handle();
 	TORRENT_ASSERT(pc);

src/request_blocks.cpp

@@ -77,9 +77,10 @@ namespace libtorrent
 		// we don't want to request more blocks while trying to gracefully pause
 		if (t.graceful_pause()) return false;
 
-		TORRENT_ASSERT(c.peer_info_struct() != nullptr || c.type() != peer_connection::bittorrent_connection);
+		TORRENT_ASSERT(c.peer_info_struct() != nullptr
+			|| c.type() != connection_type::bittorrent);
 
-		bool time_critical_mode = t.num_time_critical_pieces() > 0;
+		bool const time_critical_mode = t.num_time_critical_pieces() > 0;
 
 		// in time critical mode, only have 1 outstanding request at a time
 		// via normal requests
@@ -161,7 +162,7 @@ namespace libtorrent
 		// the last argument is if we should prefer whole pieces
 		// for this peer. If we're downloading one piece in 20 seconds
 		// then use this mode.
-		std::uint32_t flags = p.pick_pieces(*bits, interesting_pieces
+		std::uint32_t const flags = p.pick_pieces(*bits, interesting_pieces
 			, num_requests, prefer_contiguous_blocks, c.peer_info_struct()
 			, c.picker_options(), suggested, t.num_peers()
 			, ses.stats_counters());

src/session_impl.cpp

@@ -2060,6 +2060,8 @@ namespace aux {
 			return;
 		}
 
+		if (m_abort) return;
+
 		error_code ec;
 		tcp::endpoint ep = sock->local_endpoint(ec);
 		TORRENT_ASSERT(!ec);
@@ -2092,6 +2094,7 @@ namespace aux {
 					, listen_failed_alert::socks5);
 			return;
 		}
+		if (m_abort) return;
 		open_new_incoming_socks_connection();
 		incoming_connection(s);
 	}
@@ -6143,9 +6146,9 @@ namespace aux {
 		for (connection_map::iterator i = m_connections.begin()
 			, end(m_connections.end()); i != end; ++i)
 		{
-			int type = (*i)->type();
-			if (type == peer_connection::url_seed_connection
-				|| type == peer_connection::http_seed_connection)
+			connection_type const type = (*i)->type();
+			if (type == connection_type::url_seed
+				|| type == connection_type::http_seed)
 				(*i)->ignore_stats(!report);
 		}
 	}

src/torrent.cpp

@@ -919,7 +919,7 @@ namespace libtorrent
 		for (peer_iterator i = m_connections.begin()
 			, end(m_connections.end()); i != end; ++i)
 		{
-			if ((*i)->type() != peer_connection::bittorrent_connection) continue;
+			if ((*i)->type() != connection_type::bittorrent) continue;
 			bt_peer_connection* p = static_cast<bt_peer_connection*>(*i);
 			p->write_share_mode();
 		}
@@ -940,7 +940,7 @@ namespace libtorrent
 			// delete the entry from this container, make sure
 			// to increment the iterator early
 			bt_peer_connection* p = static_cast<bt_peer_connection*>(*i);
-			if (p->type() == peer_connection::bittorrent_connection)
+			if (p->type() == connection_type::bittorrent)
 			{
 				std::shared_ptr<peer_connection> me(p->self());
 				if (!p->is_disconnecting())
@@ -2122,7 +2122,7 @@ namespace libtorrent
 #ifndef TORRENT_DISABLE_EXTENSIONS
 		for (auto pe : m_connections)
 		{
-			if (pe->type() != peer_connection::bittorrent_connection) continue;
+			if (pe->type() != connection_type::bittorrent) continue;
 			bt_peer_connection* p = static_cast<bt_peer_connection*>(pe);
 			if (!p->supports_holepunch()) continue;
 			if (p->was_introduced_by(ep)) return p;
@@ -2137,7 +2137,7 @@ namespace libtorrent
 	{
 		for (auto p : m_connections)
 		{
-			if (p->type() != peer_connection::bittorrent_connection) continue;
+			if (p->type() != connection_type::bittorrent) continue;
 			if (p->remote() == ep) return static_cast<bt_peer_connection*>(p);
 		}
 		return nullptr;
@@ -6805,11 +6805,11 @@ namespace libtorrent
 				, [peerinfo] (peer_connection const* p) { return p->remote() == peerinfo->ip(); });
 #if TORRENT_USE_I2P
 			TORRENT_ASSERT(i_ == m_connections.end()
-				|| (*i_)->type() != peer_connection::bittorrent_connection
+				|| (*i_)->type() != connection_type::bittorrent
 				|| peerinfo->is_i2p_addr);
 #else
 			TORRENT_ASSERT(i_ == m_connections.end()
-				|| (*i_)->type() != peer_connection::bittorrent_connection);
+				|| (*i_)->type() != connection_type::bittorrent);
 #endif
 		}
 #endif // TORRENT_USE_ASSERTS

src/ut_metadata.cpp

@@ -495,7 +495,7 @@ namespace libtorrent { namespace
 	std::shared_ptr<peer_plugin> ut_metadata_plugin::new_connection(
 		peer_connection_handle const& pc)
 	{
-		if (pc.type() != peer_connection::bittorrent_connection)
+		if (pc.type() != connection_type::bittorrent)
 			return std::shared_ptr<peer_plugin>();
 
 		bt_peer_connection* c = static_cast<bt_peer_connection*>(pc.native_handle().get());

src/ut_pex.cpp

@@ -144,7 +144,7 @@ namespace libtorrent { namespace
 					if (num_added >= max_peer_entries) break;
 
 					// only send proper bittorrent peers
-					if (peer->type() != peer_connection::bittorrent_connection)
+					if (peer->type() != connection_type::bittorrent)
 						continue;
 
 					bt_peer_connection* p = static_cast<bt_peer_connection*>(peer);
@@ -544,7 +544,7 @@ namespace libtorrent { namespace
 				if (num_added >= max_peer_entries) break;
 
 				// only send proper bittorrent peers
-				if (peer->type() != peer_connection::bittorrent_connection)
+				if (peer->type() != connection_type::bittorrent)
 					continue;
 
 				bt_peer_connection* p = static_cast<bt_peer_connection*>(peer);
@@ -639,7 +639,7 @@ namespace libtorrent { namespace
 
 	std::shared_ptr<peer_plugin> ut_pex_plugin::new_connection(peer_connection_handle const& pc)
 	{
-		if (pc.type() != peer_connection::bittorrent_connection)
+		if (pc.type() != connection_type::bittorrent)
 			return std::shared_ptr<peer_plugin>();
 
 		bt_peer_connection* c = static_cast<bt_peer_connection*>(pc.native_handle().get());