extend peer_plugin to also be notified of disconnects and successful connect events

src/peer_connection.cpp

@@ -3469,6 +3469,13 @@ namespace libtorrent
 		}
 #endif
 
+#ifndef TORRENT_DISABLE_EXTENSIONS
+		for (extension_list_t::iterator i = m_extensions.begin()
+			, end(m_extensions.end()); i != end; ++i)
+		{
+			(*i)->on_disconnect(ec);
+		}
+#endif
 		// for incoming connections, we get invalid argument errors
 		// when asking for the remote endpoint and the socket already
 		// closed, which is an edge case, but possible to happen when
@@ -5576,6 +5583,14 @@ namespace libtorrent
 #endif
 		}
 
+#ifndef TORRENT_DISABLE_EXTENSIONS
+		for (extension_list_t::iterator i = m_extensions.begin()
+			, end(m_extensions.end()); i != end; ++i)
+		{
+			(*i)->on_connected();
+		}
+#endif
+
 		on_connected();
 		setup_send();
 		setup_receive();