storage fix

src/session_impl.cpp

@@ -162,7 +162,7 @@ namespace aux {
 #ifndef TORRENT_DISABLE_DHT
 		, m_dht_same_port(true)
 		, m_external_udp_port(0)
-		, m_dht_socket(m_io_service, bind(&session_impl::on_receive_udp, this, _1, _2, _3)
+		, m_dht_socket(m_io_service, bind(&session_impl::on_receive_udp, this, _1, _2, _3, _4)
 			, m_half_open)
 #endif
 		, m_timer(m_io_service)
@@ -580,8 +580,20 @@ namespace aux {
 
 #ifndef TORRENT_DISABLE_DHT
 
-	void session_impl::on_receive_udp(udp::endpoint const& ep, char const* buf, int len)
+	void session_impl::on_receive_udp(asio::error_code const& e
+		, udp::endpoint const& ep, char const* buf, int len)
 	{
+		if (e)
+		{
+			if (m_alerts.should_post(alert::info))
+			{
+				std::string msg = "UDP socket error from '"
+					+ boost::lexical_cast<std::string>(ep) + "' " + e.message();
+				m_alerts.post_alert(udp_error_alert(ep, msg));
+			}
+			return;
+		}
+
 		if (len > 20 && *buf == 'd' && m_dht)
 		{
 			// this is probably a dht message

src/storage.cpp

@@ -2212,6 +2212,7 @@ namespace libtorrent
 	{
 		TORRENT_ASSERT(m_storage_mode == storage_mode_compact);	
 		TORRENT_ASSERT(m_unallocated_slots.empty());	
+		TORRENT_ASSERT(m_free_slots.empty());	
 		// we have allocated all slots, switch to
 		// full allocation mode in order to free
 		// some unnecessary memory.
@@ -2330,10 +2331,8 @@ namespace libtorrent
 		TORRENT_ASSERT(slot_index >= 0);
 		TORRENT_ASSERT(slot_index < (int)m_slot_to_piece.size());
 
-		if (m_unallocated_slots.empty())
+		if (m_free_slots.empty() && m_unallocated_slots.empty())
-		{
 			switch_to_full_mode();
-		}
 		
 		return slot_index;
 	}
@@ -2400,7 +2399,9 @@ namespace libtorrent
 
 		TORRENT_ASSERT(m_current_slot <= m_info->num_pieces());
 		
-		if (m_unallocated_slots.empty() && m_state == state_finished)
+		if (m_unallocated_slots.empty()
+			&& m_free_slots.empty()
+			&& m_state == state_finished)
 		{
 			TORRENT_ASSERT(m_storage_mode != storage_mode_compact);
 		}

src/udp_socket.cpp

@@ -39,7 +39,37 @@ void udp_socket::send(udp::endpoint const& ep, char const* p, int len, asio::err
 
 void udp_socket::on_read(udp::socket* s, asio::error_code const& e, std::size_t bytes_transferred)
 {
-	if (e) return;
+	if (e)
+	{
+#ifndef BOOST_NO_EXCEPTIONS
+		try {
+#endif
+		if (s == &m_ipv4_sock)
+			m_callback(e, m_v4_ep, 0, 0);
+		else
+			m_callback(e, m_v6_ep, 0, 0);
+#ifndef BOOST_NO_EXCEPTIONS
+		} catch(std::exception&) {}
+#endif
+
+		// don't stop listening on recoverable errors
+		if (e != asio::error::host_unreachable
+			&& e != asio::error::fault
+			&& e != asio::error::connection_reset
+			&& e != asio::error::connection_refused
+			&& e != asio::error::connection_aborted
+			&& e != asio::error::message_size)
+			return;
+
+		if (s == &m_ipv4_sock)
+			s->async_receive_from(asio::buffer(m_v4_buf, sizeof(m_v4_buf))
+				, m_v4_ep, boost::bind(&udp_socket::on_read, this, s, _1, _2));
+		else
+			s->async_receive_from(asio::buffer(m_v6_buf, sizeof(m_v6_buf))
+				, m_v6_ep, boost::bind(&udp_socket::on_read, this, s, _1, _2));
+
+		return;
+	}
 	if (!m_callback) return;
 
 	if (s == &m_ipv4_sock)
@@ -49,9 +79,9 @@ void udp_socket::on_read(udp::socket* s, asio::error_code const& e, std::size_t
 #endif
 
 		if (m_tunnel_packets && m_v4_ep == m_proxy_addr)
-			unwrap(m_v4_buf, bytes_transferred);
+			unwrap(e, m_v4_buf, bytes_transferred);
 		else
-			m_callback(m_v4_ep, m_v4_buf, bytes_transferred);
+			m_callback(e, m_v4_ep, m_v4_buf, bytes_transferred);
 
 #ifndef BOOST_NO_EXCEPTIONS
 		} catch(std::exception&) {}
@@ -66,9 +96,9 @@ void udp_socket::on_read(udp::socket* s, asio::error_code const& e, std::size_t
 #endif
 
 		if (m_tunnel_packets && m_v6_ep == m_proxy_addr)
-			unwrap(m_v6_buf, bytes_transferred);
+			unwrap(e, m_v6_buf, bytes_transferred);
 		else
-			m_callback(m_v6_ep, m_v6_buf, bytes_transferred);
+			m_callback(e, m_v6_ep, m_v6_buf, bytes_transferred);
 
 #ifndef BOOST_NO_EXCEPTIONS
 		} catch(std::exception&) {}
@@ -102,7 +132,7 @@ void udp_socket::wrap(udp::endpoint const& ep, char const* p, int len, asio::err
 }
 
 // unwrap the UDP packet from the SOCKS5 header
-void udp_socket::unwrap(char const* buf, int size)
+void udp_socket::unwrap(asio::error_code const& e, char const* buf, int size)
 {
 	using namespace libtorrent::detail;
 
@@ -128,7 +158,6 @@ void udp_socket::unwrap(char const* buf, int size)
 	{
 		// IPv6
 		TORRENT_ASSERT(false && "not supported yet");
-	
 	}
 	else
 	{
@@ -136,7 +165,7 @@ void udp_socket::unwrap(char const* buf, int size)
 		return;
 	}
 
-	m_callback(sender, p, size - (p - buf));
+	m_callback(e, sender, p, size - (p - buf));
 }
 
 void udp_socket::close()

src/udp_tracker_connection.cpp

@@ -84,7 +84,7 @@ namespace libtorrent
 		: tracker_connection(man, req, ios, bind_infc, c)
 		, m_man(man)
 		, m_name_lookup(ios)
-		, m_socket(ios, boost::bind(&udp_tracker_connection::on_receive, this, _1, _2, _3), cc)
+		, m_socket(ios, boost::bind(&udp_tracker_connection::on_receive, this, _1, _2, _3, _4), cc)
 		, m_transaction_id(0)
 		, m_connection_id(0)
 		, m_settings(stn)
@@ -185,7 +185,8 @@ namespace libtorrent
 		tracker_connection::close();
 	}
 
-	void udp_tracker_connection::on_receive(udp::endpoint const& ep, char const* buf, int size)
+	void udp_tracker_connection::on_receive(asio::error_code const& e
+		, udp::endpoint const& ep, char const* buf, int size)
 	{
 		// ignore resposes before we've sent any requests
 		if (m_state == action_error) return;
@@ -194,6 +195,8 @@ namespace libtorrent
 
 		// ignore packet not sent from the tracker
 		if (m_target != ep) return;
+		
+		if (e) fail(-1, e.message().c_str());
 
 #if defined TORRENT_VERBOSE_LOGGING || defined TORRENT_LOGGING
 		boost::shared_ptr<request_callback> cb = requester();