lt sync 1746

libtorrent/include/libtorrent/proxy_base.hpp

@@ -123,6 +123,7 @@ public:
 	{
 		m_remote_endpoint = endpoint_type();
 		m_sock.close();
+		m_resolver.cancel();
 	}
 
 	void close(asio::error_code& ec)

libtorrent/include/libtorrent/session_settings.hpp

@@ -115,6 +115,7 @@ namespace libtorrent
 #ifndef TORRENT_DISABLE_DHT
 			, use_dht_as_fallback(true)
 #endif
+			, free_torrent_hashes(true)
 		{}
 
 		// this is the user agent that will be sent to the tracker
@@ -281,6 +282,12 @@ namespace libtorrent
 		// tracker is online
 		bool use_dht_as_fallback;
 #endif
+
+		// if this is true, the piece hashes will be freed, in order
+		// to save memory, once the torrent is seeding. This will
+		// make the get_torrent_info() function to return an incomplete
+		// torrent object that cannot be passed back to add_torrent()
+		bool free_torrent_hashes;
 	};
 	
 #ifndef TORRENT_DISABLE_DHT

libtorrent/src/bt_peer_connection.cpp

@@ -1272,7 +1272,13 @@ namespace libtorrent
 	{
 		INVARIANT_CHECK;
 
-		TORRENT_ASSERT(m_sent_handshake && m_sent_bitfield);
+		// Don't require the bitfield to have been sent at this point
+		// the case where m_sent_bitfield may not be true is if the
+		// torrent doesn't have any metadata, and a peer is timimg out.
+		// then the keep-alive message will be sent before the bitfield
+		// this is a violation to the original protocol, but necessary
+		// for the metadata extension.
+		TORRENT_ASSERT(m_sent_handshake);
 
 		char msg[] = {0,0,0,0};
 		send_buffer(msg, sizeof(msg));
@@ -2477,6 +2483,11 @@ namespace libtorrent
 
 		TORRENT_ASSERT(!m_rc4_encrypted || m_RC4_handler.get());
 #endif
+		if (!in_handshake())
+		{
+			TORRENT_ASSERT(m_sent_handshake);
+		}
+
 		if (!m_in_constructor)
 			peer_connection::check_invariant();
 

libtorrent/src/kademlia/node_id.cpp

@@ -87,7 +87,7 @@ int distance_exp(node_id const& n1, node_id const& n2)
 		// return the bit-number of the first bit
 		// that differs
 		int bit = byte * 8;
-		for (int b = 7; b > 0; --b)
+		for (int b = 7; b >= 0; --b)
 			if (t >= (1 << b)) return bit + b;
 		return bit;
 	}

libtorrent/src/session_impl.cpp

@@ -2317,6 +2317,8 @@ namespace detail
 	void session_impl::stop_lsd()
 	{
 		mutex_t::scoped_lock l(m_mutex);
+		if (m_lsd.get())
+			m_lsd->close();
 		m_lsd = 0;
 	}
 	

libtorrent/src/torrent.cpp

@@ -1153,7 +1153,8 @@ namespace libtorrent
 		if (is_seed())
 		{
 			m_picker.reset();
-			m_torrent_file->seed_free();
+			if (m_ses.settings().free_torrent_hashes)
+				m_torrent_file->seed_free();
 		}
 	}
 
@@ -2347,7 +2348,8 @@ namespace libtorrent
 		if (is_seed())
 		{
 			m_picker.reset();
-			m_torrent_file->seed_free();
+			if (m_ses.settings().free_torrent_hashes)
+				m_torrent_file->seed_free();
 		}
 
 		if (!m_connections_initialized)