diff --git a/libtorrent/include/libtorrent/http_tracker_connection.hpp b/libtorrent/include/libtorrent/http_tracker_connection.hpp
index 70be3054a..5b618c876 100755
--- a/libtorrent/include/libtorrent/http_tracker_connection.hpp
+++ b/libtorrent/include/libtorrent/http_tracker_connection.hpp
@@ -159,7 +159,7 @@ namespace libtorrent
 		asio::strand& m_strand;
 		tcp::resolver m_name_lookup;
 		int m_port;
-		boost::shared_ptr<socket_type> m_socket;
+		socket_type m_socket;
 		int m_recv_pos;
 		std::vector<char> m_buffer;
 		std::string m_send_buffer;
diff --git a/libtorrent/include/libtorrent/instantiate_connection.hpp b/libtorrent/include/libtorrent/instantiate_connection.hpp
index 49cb1fe18..71282f993 100644
--- a/libtorrent/include/libtorrent/instantiate_connection.hpp
+++ b/libtorrent/include/libtorrent/instantiate_connection.hpp
@@ -41,8 +41,8 @@ namespace libtorrent
 {
 	struct proxy_settings;
 
-	boost::shared_ptr<socket_type> instantiate_connection(
-		asio::io_service& ios, proxy_settings const& ps);
+	bool instantiate_connection(asio::io_service& ios
+		, proxy_settings const& ps, socket_type& s);
 }
 
 #endif
diff --git a/libtorrent/include/libtorrent/proxy_base.hpp b/libtorrent/include/libtorrent/proxy_base.hpp
index 021802dd0..f2a955958 100644
--- a/libtorrent/include/libtorrent/proxy_base.hpp
+++ b/libtorrent/include/libtorrent/proxy_base.hpp
@@ -104,10 +104,9 @@ public:
 		m_sock.bind(endpoint);
 	}
 
-	template <class Error_Handler>
-	void bind(endpoint_type const& endpoint, Error_Handler const& error_handler)
+	void bind(endpoint_type const& endpoint, asio::error_code& ec)
 	{
-		m_sock.bind(endpoint, error_handler);
+		m_sock.bind(endpoint, ec);
 	}
 
 	void open(protocol_type const& p)
@@ -115,10 +114,9 @@ public:
 		m_sock.open(p);
 	}
 
-	template <class Error_Handler>
-	void open(protocol_type const& p, Error_Handler const& error_handler)
+	void open(protocol_type const& p, asio::error_code& ec)
 	{
-		m_sock.open(p, error_handler);
+		m_sock.open(p, ec);
 	}
 
 	void close()
@@ -127,10 +125,9 @@ public:
 		m_sock.close();
 	}
 
-	template <class Error_Handler>
-	void close(Error_Handler const& error_handler)
+	void close(asio::error_code& ec)
 	{
-		m_sock.close(error_handler);
+		m_sock.close(ec);
 	}
 
 	endpoint_type remote_endpoint()
@@ -138,8 +135,7 @@ public:
 		return m_remote_endpoint;
 	}
 
-	template <class Error_Handler>
-	endpoint_type remote_endpoint(Error_Handler const& error_handler)
+	endpoint_type remote_endpoint(asio::error_code& ec)
 	{
 		return m_remote_endpoint;
 	}
@@ -149,10 +145,9 @@ public:
 		return m_sock.local_endpoint();
 	}
 
-	template <class Error_Handler>
-	endpoint_type local_endpoint(Error_Handler const& error_handler)
+	endpoint_type local_endpoint(asio::error_code& ec)
 	{
-		return m_sock.local_endpoint(error_handler);
+		return m_sock.local_endpoint(ec);
 	}
 
 	asio::io_service& io_service()
@@ -168,7 +163,6 @@ public:
 protected:
 
 	stream_socket m_sock;
-	// the socks5 proxy
 	std::string m_hostname;
 	int m_port;
 
diff --git a/libtorrent/include/libtorrent/session_settings.hpp b/libtorrent/include/libtorrent/session_settings.hpp
index a792e296a..8d57b27ec 100644
--- a/libtorrent/include/libtorrent/session_settings.hpp
+++ b/libtorrent/include/libtorrent/session_settings.hpp
@@ -87,7 +87,7 @@ namespace libtorrent
 			, tracker_receive_timeout(20)
 			, stop_tracker_timeout(5)
 			, tracker_maximum_response_length(1024*1024)
-			, piece_timeout(120)
+			, piece_timeout(10)
 			, request_queue_time(3.f)
 			, max_allowed_in_request_queue(250)
 			, max_out_request_queue(200)
diff --git a/libtorrent/include/libtorrent/socks4_stream.hpp b/libtorrent/include/libtorrent/socks4_stream.hpp
index 6110dbe4d..9530f9d57 100644
--- a/libtorrent/include/libtorrent/socks4_stream.hpp
+++ b/libtorrent/include/libtorrent/socks4_stream.hpp
@@ -89,3 +89,4 @@ private:
 }
 
 #endif
+
diff --git a/libtorrent/include/libtorrent/socks5_stream.hpp b/libtorrent/include/libtorrent/socks5_stream.hpp
index 8bfc74c59..622557cd2 100644
--- a/libtorrent/include/libtorrent/socks5_stream.hpp
+++ b/libtorrent/include/libtorrent/socks5_stream.hpp
@@ -101,3 +101,4 @@ private:
 }
 
 #endif
+
diff --git a/libtorrent/include/libtorrent/torrent.hpp b/libtorrent/include/libtorrent/torrent.hpp
index 60140f2c2..20779e6f5 100755
--- a/libtorrent/include/libtorrent/torrent.hpp
+++ b/libtorrent/include/libtorrent/torrent.hpp
@@ -424,6 +424,7 @@ namespace libtorrent
 		}
 
 		int block_size() const { TORRENT_ASSERT(m_block_size > 0); return m_block_size; }
+		peer_request to_req(piece_block const& p);
 
 		// this will tell all peers that we just got his piece
 		// and also let the piece picker know that we have this piece
diff --git a/libtorrent/include/libtorrent/udp_tracker_connection.hpp b/libtorrent/include/libtorrent/udp_tracker_connection.hpp
index c0e6853b9..e5eadc144 100755
--- a/libtorrent/include/libtorrent/udp_tracker_connection.hpp
+++ b/libtorrent/include/libtorrent/udp_tracker_connection.hpp
@@ -105,7 +105,7 @@ namespace libtorrent
 
 		asio::strand& m_strand;
 		udp::resolver m_name_lookup;
-		boost::shared_ptr<datagram_socket> m_socket;
+		datagram_socket m_socket;
 		udp::endpoint m_target;
 		udp::endpoint m_sender;
 
diff --git a/libtorrent/include/libtorrent/variant_stream.hpp b/libtorrent/include/libtorrent/variant_stream.hpp
index 4f45f5e01..ec012364f 100644
--- a/libtorrent/include/libtorrent/variant_stream.hpp
+++ b/libtorrent/include/libtorrent/variant_stream.hpp
@@ -501,15 +501,12 @@ public:
     typedef typename S0::endpoint_type endpoint_type;
     typedef typename S0::protocol_type protocol_type;
 
-    explicit variant_stream(asio::io_service& io_service)
-      : m_io_service(io_service)
-      , m_variant(boost::blank())
-    {}
+    explicit variant_stream() : m_variant(boost::blank()) {}
 
     template <class S>
-    void instantiate()
+    void instantiate(asio::io_service& ios)
     {
-        std::auto_ptr<S> owned(new S(m_io_service));
+        std::auto_ptr<S> owned(new S(ios));
         boost::apply_visitor(aux::delete_visitor(), m_variant);
         m_variant = owned.get();
         owned.release();
@@ -704,7 +701,6 @@ public:
     }
 
 private:
-	 asio::io_service& m_io_service;
     variant_type m_variant;
 };
 
diff --git a/libtorrent/src/http_tracker_connection.cpp b/libtorrent/src/http_tracker_connection.cpp
index de1783b58..ccca58226 100755
--- a/libtorrent/src/http_tracker_connection.cpp
+++ b/libtorrent/src/http_tracker_connection.cpp
@@ -496,7 +496,7 @@ namespace libtorrent
 	void http_tracker_connection::on_timeout()
 	{
 		m_timed_out = true;
-		m_socket.reset();
+		m_socket.close();
 		m_name_lookup.cancel();
 		if (m_connection_ticket > -1) m_cc.done(m_connection_ticket);
 		m_connection_ticket = -1;
@@ -550,18 +550,20 @@ namespace libtorrent
 		}
 
 		if (cb) cb->m_tracker_address = target_address;
-		m_socket = instantiate_connection(m_name_lookup.io_service(), m_proxy);
+		bool ret = instantiate_connection(m_strand.io_service(), m_proxy, m_socket);
+
+		TORRENT_ASSERT(ret);
 
 		if (m_proxy.type == proxy_settings::http
 			|| m_proxy.type == proxy_settings::http_pw)
 		{
 			// the tracker connection will talk immediately to
 			// the proxy, without requiring CONNECT support
-			m_socket->get<http_stream>().set_no_connect(true);
+			m_socket.get<http_stream>().set_no_connect(true);
 		}
 
-		m_socket->open(target_address.protocol());
-		m_socket->bind(tcp::endpoint(bind_interface(), 0));
+		m_socket.open(target_address.protocol());
+		m_socket.bind(tcp::endpoint(bind_interface(), 0));
 		m_cc.enqueue(bind(&http_tracker_connection::connect, self(), _1, target_address)
 			, bind(&http_tracker_connection::on_timeout, self())
 			, seconds(m_settings.tracker_receive_timeout));
@@ -574,7 +576,7 @@ namespace libtorrent
 	void http_tracker_connection::connect(int ticket, tcp::endpoint target_address)
 	{
 		m_connection_ticket = ticket;
-		m_socket->async_connect(target_address, bind(&http_tracker_connection::connected, self(), _1));
+		m_socket.async_connect(target_address, bind(&http_tracker_connection::connected, self(), _1));
 	}
 
 	void http_tracker_connection::connected(asio::error_code const& error) try
@@ -595,7 +597,7 @@ namespace libtorrent
 #endif
 
 		restart_read_timeout();
-		async_write(*m_socket, asio::buffer(m_send_buffer.c_str()
+		async_write(m_socket, asio::buffer(m_send_buffer.c_str()
 			, m_send_buffer.size()), bind(&http_tracker_connection::sent
 			, self(), _1));
 	}
@@ -620,7 +622,7 @@ namespace libtorrent
 #endif
 		restart_read_timeout();
 		TORRENT_ASSERT(m_buffer.size() - m_recv_pos > 0);
-		m_socket->async_read_some(asio::buffer(&m_buffer[m_recv_pos]
+		m_socket.async_read_some(asio::buffer(&m_buffer[m_recv_pos]
 			, m_buffer.size() - m_recv_pos), bind(&http_tracker_connection::receive
 			, self(), _1, _2));
 	}
@@ -701,7 +703,7 @@ namespace libtorrent
 		}
 
 		TORRENT_ASSERT(m_buffer.size() - m_recv_pos > 0);
-		m_socket->async_read_some(asio::buffer(&m_buffer[m_recv_pos]
+		m_socket.async_read_some(asio::buffer(&m_buffer[m_recv_pos]
 			, m_buffer.size() - m_recv_pos), bind(&http_tracker_connection::receive
 			, self(), _1, _2));
 	}
diff --git a/libtorrent/src/instantiate_connection.cpp b/libtorrent/src/instantiate_connection.cpp
index 43b70f40d..f9c997fb1 100644
--- a/libtorrent/src/instantiate_connection.cpp
+++ b/libtorrent/src/instantiate_connection.cpp
@@ -42,42 +42,40 @@ POSSIBILITY OF SUCH DAMAGE.
 namespace libtorrent
 {
 
-	boost::shared_ptr<socket_type> instantiate_connection(
-		asio::io_service& ios, proxy_settings const& ps)
+	bool instantiate_connection(asio::io_service& ios
+		, proxy_settings const& ps, socket_type& s)
 	{
-		boost::shared_ptr<socket_type> s(new socket_type(ios));
-
 		if (ps.type == proxy_settings::none)
 		{
-			s->instantiate<stream_socket>();
+			s.instantiate<stream_socket>(ios);
 		}
 		else if (ps.type == proxy_settings::http
 			|| ps.type == proxy_settings::http_pw)
 		{
-			s->instantiate<http_stream>();
-			s->get<http_stream>().set_proxy(ps.hostname, ps.port);
+			s.instantiate<http_stream>(ios);
+			s.get<http_stream>().set_proxy(ps.hostname, ps.port);
 			if (ps.type == proxy_settings::socks5_pw)
-				s->get<http_stream>().set_username(ps.username, ps.password);
+				s.get<http_stream>().set_username(ps.username, ps.password);
 		}
 		else if (ps.type == proxy_settings::socks5
 			|| ps.type == proxy_settings::socks5_pw)
 		{
-			s->instantiate<socks5_stream>();
-			s->get<socks5_stream>().set_proxy(ps.hostname, ps.port);
+			s.instantiate<socks5_stream>(ios);
+			s.get<socks5_stream>().set_proxy(ps.hostname, ps.port);
 			if (ps.type == proxy_settings::socks5_pw)
-				s->get<socks5_stream>().set_username(ps.username, ps.password);
+				s.get<socks5_stream>().set_username(ps.username, ps.password);
 		}
 		else if (ps.type == proxy_settings::socks4)
 		{
-			s->instantiate<socks4_stream>();
-			s->get<socks4_stream>().set_proxy(ps.hostname, ps.port);
-			s->get<socks4_stream>().set_username(ps.username);
+			s.instantiate<socks4_stream>(ios);
+			s.get<socks4_stream>().set_proxy(ps.hostname, ps.port);
+			s.get<socks4_stream>().set_username(ps.username);
 		}
 		else
 		{
-			throw std::runtime_error("unsupported proxy type");
+			return false;
 		}
-		return s;
+		return true;
 	}
 
 }
diff --git a/libtorrent/src/peer_connection.cpp b/libtorrent/src/peer_connection.cpp
index 84d12a96d..2032b54c5 100755
--- a/libtorrent/src/peer_connection.cpp
+++ b/libtorrent/src/peer_connection.cpp
@@ -2209,18 +2209,19 @@ namespace libtorrent
 				piece_picker& picker = t->picker();
 				while (!m_download_queue.empty())
 				{
-					picker.abort_download(m_download_queue.back());
+					piece_block const& r = m_download_queue.back();
+					picker.abort_download(r);
+					write_cancel(t->to_req(r));
 					m_download_queue.pop_back();
 				}
 				while (!m_request_queue.empty())
 				{
-					picker.abort_download(m_request_queue.back());
+					piece_block const& r = m_request_queue.back();
+					picker.abort_download(r);
+					write_cancel(t->to_req(r));
 					m_request_queue.pop_back();
 				}
 
-				// TODO: If we have a limited number of upload
-				// slots, choke this peer
-				
 				m_assume_fifo = true;
 
 				request_a_block(*t, *this);
@@ -2990,11 +2991,25 @@ namespace libtorrent
 		// time, it is considered to have timed out
 		time_duration d;
 		d = now - m_last_receive;
-		if (d > seconds(m_timeout)) return true;
+		if (d > seconds(m_timeout))
+		{
+#ifdef TORRENT_VERBOSE_LOGGING
+			(*m_logger) << time_now_string() << " *** LAST ACTIVITY [ "
+				<< total_seconds(d) << " seconds ago ] ***\n";
+#endif
+			return true;
+		}
 
 		// if it takes more than 5 seconds to receive
 		// handshake, disconnect
-		if (in_handshake() && d > seconds(5)) return true;
+		if (in_handshake() && d > seconds(5))
+		{
+#ifdef TORRENT_VERBOSE_LOGGING
+			(*m_logger) << time_now_string() << " *** NO HANDSHAKE [ "
+				<< total_seconds(d) << " seconds ago ] ***\n";
+#endif
+			return true;
+		}
 
 		// disconnect peers that we unchoked, but
 		// they didn't send a request within 20 seconds.
@@ -3005,7 +3020,14 @@ namespace libtorrent
 			&& !m_choked
 			&& m_peer_interested
 			&& t && t->is_finished()
-			&& d > seconds(20)) return true;
+			&& d > seconds(20))
+		{
+#ifdef TORRENT_VERBOSE_LOGGING
+			(*m_logger) << time_now_string() << " *** NO REQUEST [ t: "
+				<< total_seconds(d) << " ] ***\n";
+#endif
+			return true;
+		}
 
 		// TODO: as long as we have less than 95% of the
 		// global (or local) connection limit, connections should
@@ -3021,11 +3043,21 @@ namespace libtorrent
 		time_duration time_limit = seconds(
 			m_ses.settings().inactivity_timeout);
 
+		// don't bother disconnect peers we haven't been intersted
+		// in (and that hasn't been interested in us) for a while
+		// unless we have used up all our connection slots
 		if (!m_interesting
 			&& !m_peer_interested
 			&& d1 > time_limit
-			&& d2 > time_limit)
+			&& d2 > time_limit
+			&& (m_ses.num_connections() >= m_ses.max_connections()
+			|| (t && t->num_peers() >= t->max_connections())))
 		{
+#ifdef TORRENT_VERBOSE_LOGGING
+			(*m_logger) << time_now_string() << " *** MUTUAL NO INTEREST [ "
+				"t1: " << total_seconds(d1) << " | "
+				"t2: " << total_seconds(d2) << " ] ***\n";
+#endif
 			return true;
 		}
 
@@ -3068,10 +3100,9 @@ namespace libtorrent
 		if (m_writing) return;
 
 #ifdef TORRENT_VERBOSE_LOGGING
-		using namespace	boost::posix_time;
 		(*m_logger) << time_now_string() << " ==> KEEPALIVE\n";
 #endif
-		
+
 		m_last_sent = time_now();
 		write_keepalive();
 	}
diff --git a/libtorrent/src/session_impl.cpp b/libtorrent/src/session_impl.cpp
index a602c6fa4..299ba96a7 100755
--- a/libtorrent/src/session_impl.cpp
+++ b/libtorrent/src/session_impl.cpp
@@ -902,8 +902,8 @@ namespace detail
 
 	void session_impl::async_accept(boost::shared_ptr<socket_acceptor> const& listener)
 	{
-		shared_ptr<socket_type> c(new socket_type(m_io_service));
-		c->instantiate<stream_socket>();
+		shared_ptr<socket_type> c(new socket_type);
+		c->instantiate<stream_socket>(m_io_service);
 		listener->async_accept(c->get<stream_socket>()
 			, bind(&session_impl::on_incoming_connection, this, c
 			, boost::weak_ptr<socket_acceptor>(listener), _1));
diff --git a/libtorrent/src/torrent.cpp b/libtorrent/src/torrent.cpp
index 088789d79..d14b3075d 100755
--- a/libtorrent/src/torrent.cpp
+++ b/libtorrent/src/torrent.cpp
@@ -326,6 +326,21 @@ namespace libtorrent
 			disconnect_all();
 	}
 
+	peer_request torrent::to_req(piece_block const& p)
+	{
+		int block_offset = p.block_index * m_block_size;
+		int block_size = (std::min)((int)torrent_file().piece_size(
+			p.piece_index) - block_offset, m_block_size);
+		TORRENT_ASSERT(block_size > 0);
+		TORRENT_ASSERT(block_size <= m_block_size);
+
+		peer_request r;
+		r.piece = p.piece_index;
+		r.start = block_offset;
+		r.length = block_size;
+		return r;
+	}
+
 	std::string torrent::name() const
 	{
 		if (valid_metadata()) return m_torrent_file->name();
@@ -1656,8 +1671,11 @@ namespace libtorrent
 			else return;
 		}
 
-		boost::shared_ptr<socket_type> s
-			= instantiate_connection(m_ses.m_io_service, m_ses.web_seed_proxy());
+		boost::shared_ptr<socket_type> s(new socket_type);
+	
+		bool ret = instantiate_connection(m_ses.m_io_service, m_ses.web_seed_proxy(), *s);
+		TORRENT_ASSERT(ret);
+
 		if (m_ses.web_seed_proxy().type == proxy_settings::http
 			|| m_ses.web_seed_proxy().type == proxy_settings::http_pw)
 		{
@@ -1869,8 +1887,11 @@ namespace libtorrent
 		tcp::endpoint const& a(peerinfo->ip);
 		TORRENT_ASSERT((m_ses.m_ip_filter.access(a.address()) & ip_filter::blocked) == 0);
 
-		boost::shared_ptr<socket_type> s
-			= instantiate_connection(m_ses.m_io_service, m_ses.peer_proxy());
+		boost::shared_ptr<socket_type> s(new socket_type);
+
+		bool ret = instantiate_connection(m_ses.m_io_service, m_ses.peer_proxy(), *s);
+		TORRENT_ASSERT(ret);
+
 		boost::intrusive_ptr<peer_connection> c(new bt_peer_connection(
 			m_ses, shared_from_this(), s, a, peerinfo));
 
diff --git a/libtorrent/src/udp_tracker_connection.cpp b/libtorrent/src/udp_tracker_connection.cpp
index 1ba50b3c6..dd2ff10a1 100755
--- a/libtorrent/src/udp_tracker_connection.cpp
+++ b/libtorrent/src/udp_tracker_connection.cpp
@@ -86,6 +86,7 @@ namespace libtorrent
 		, m_man(man)
 		, m_strand(str)
 		, m_name_lookup(m_strand.io_service())
+		, m_socket(m_strand.io_service())
 		, m_transaction_id(0)
 		, m_connection_id(0)
 		, m_settings(stn)
@@ -103,7 +104,7 @@ namespace libtorrent
 		, udp::resolver::iterator i) try
 	{
 		if (error == asio::error::operation_aborted) return;
-		if (!m_socket) return; // the operation was aborted
+		if (!m_socket.is_open()) return; // the operation was aborted
 		if (error || i == udp::resolver::iterator())
 		{
 			fail(-1, error.message().c_str());
@@ -143,10 +144,9 @@ namespace libtorrent
 		
 		if (cb) cb->m_tracker_address = tcp::endpoint(target_address.address(), target_address.port());
 		m_target = target_address;
-		m_socket.reset(new datagram_socket(m_name_lookup.io_service()));
-		m_socket->open(target_address.protocol());
-		m_socket->bind(udp::endpoint(bind_interface(), 0));
-		m_socket->connect(target_address);
+		m_socket.open(target_address.protocol());
+		m_socket.bind(udp::endpoint(bind_interface(), 0));
+		m_socket.connect(target_address);
 		send_udp_connect();
 	}
 	catch (std::exception& e)
@@ -156,7 +156,7 @@ namespace libtorrent
 
 	void udp_tracker_connection::on_timeout()
 	{
-		m_socket.reset();
+		m_socket.close();
 		m_name_lookup.cancel();
 		fail_timeout();
 	}
@@ -171,7 +171,7 @@ namespace libtorrent
 				+ lexical_cast<std::string>(tracker_req().info_hash) + "]");
 		}
 #endif
-		if (!m_socket) return; // the operation was aborted
+		if (!m_socket.is_open()) return; // the operation was aborted
 
 		char send_buf[16];
 		char* ptr = send_buf;
@@ -187,10 +187,10 @@ namespace libtorrent
 		// transaction_id
 		detail::write_int32(m_transaction_id, ptr);
 
-		m_socket->send(asio::buffer((void*)send_buf, 16), 0);
+		m_socket.send(asio::buffer((void*)send_buf, 16), 0);
 		++m_attempts;
 		m_buffer.resize(udp_buffer_size);
-		m_socket->async_receive_from(asio::buffer(m_buffer), m_sender
+		m_socket.async_receive_from(asio::buffer(m_buffer), m_sender
 			, boost::bind(&udp_tracker_connection::connect_response, self(), _1, _2));
 	}
 
@@ -198,7 +198,7 @@ namespace libtorrent
 		, std::size_t bytes_transferred) try
 	{
 		if (error == asio::error::operation_aborted) return;
-		if (!m_socket) return; // the operation was aborted
+		if (!m_socket.is_open()) return; // the operation was aborted
 		if (error)
 		{
 			fail(-1, error.message().c_str());
@@ -208,7 +208,7 @@ namespace libtorrent
 		if (m_target != m_sender)
 		{
 			// this packet was not received from the tracker
-			m_socket->async_receive_from(asio::buffer(m_buffer), m_sender
+			m_socket.async_receive_from(asio::buffer(m_buffer), m_sender
 				, boost::bind(&udp_tracker_connection::connect_response, self(), _1, _2));
 			return;
 		}
@@ -284,7 +284,7 @@ namespace libtorrent
 		if (m_transaction_id == 0)
 			m_transaction_id = rand() ^ (rand() << 16);
 
-		if (!m_socket) return; // the operation was aborted
+		if (!m_socket.is_open()) return; // the operation was aborted
 
 		std::vector<char> buf;
 		std::back_insert_iterator<std::vector<char> > out(buf);
@@ -332,10 +332,10 @@ namespace libtorrent
 		}
 #endif
 
-		m_socket->send(asio::buffer(buf), 0);
+		m_socket.send(asio::buffer(buf), 0);
 		++m_attempts;
 
-		m_socket->async_receive_from(asio::buffer(m_buffer), m_sender
+		m_socket.async_receive_from(asio::buffer(m_buffer), m_sender
 			, bind(&udp_tracker_connection::announce_response, self(), _1, _2));
 	}
 
@@ -344,7 +344,7 @@ namespace libtorrent
 		if (m_transaction_id == 0)
 			m_transaction_id = rand() ^ (rand() << 16);
 
-		if (!m_socket) return; // the operation was aborted
+		if (!m_socket.is_open()) return; // the operation was aborted
 
 		std::vector<char> buf;
 		std::back_insert_iterator<std::vector<char> > out(buf);
@@ -358,10 +358,10 @@ namespace libtorrent
 		// info_hash
 		std::copy(tracker_req().info_hash.begin(), tracker_req().info_hash.end(), out);
 
-		m_socket->send(asio::buffer(&buf[0], buf.size()), 0);
+		m_socket.send(asio::buffer(&buf[0], buf.size()), 0);
 		++m_attempts;
 
-		m_socket->async_receive_from(asio::buffer(m_buffer), m_sender
+		m_socket.async_receive_from(asio::buffer(m_buffer), m_sender
 			, bind(&udp_tracker_connection::scrape_response, self(), _1, _2));
 	}
 
@@ -369,7 +369,7 @@ namespace libtorrent
 		, std::size_t bytes_transferred) try
 	{
 		if (error == asio::error::operation_aborted) return;
-		if (!m_socket) return; // the operation was aborted
+		if (!m_socket.is_open()) return; // the operation was aborted
 		if (error)
 		{
 			fail(-1, error.message().c_str());
@@ -379,7 +379,7 @@ namespace libtorrent
 		if (m_target != m_sender)
 		{
 			// this packet was not received from the tracker
-			m_socket->async_receive_from(asio::buffer(m_buffer), m_sender
+			m_socket.async_receive_from(asio::buffer(m_buffer), m_sender
 				, bind(&udp_tracker_connection::connect_response, self(), _1, _2));
 			return;
 		}
@@ -479,7 +479,7 @@ namespace libtorrent
 		, std::size_t bytes_transferred) try
 	{
 		if (error == asio::error::operation_aborted) return;
-		if (!m_socket) return; // the operation was aborted
+		if (!m_socket.is_open()) return; // the operation was aborted
 		if (error)
 		{
 			fail(-1, error.message().c_str());
@@ -489,7 +489,7 @@ namespace libtorrent
 		if (m_target != m_sender)
 		{
 			// this packet was not received from the tracker
-			m_socket->async_receive_from(asio::buffer(m_buffer), m_sender
+			m_socket.async_receive_from(asio::buffer(m_buffer), m_sender
 				, bind(&udp_tracker_connection::connect_response, self(), _1, _2));
 			return;
 		}