diff --git a/include/libtorrent/peer_connection.hpp b/include/libtorrent/peer_connection.hpp
index 8e368a580..805b38d9d 100755
--- a/include/libtorrent/peer_connection.hpp
+++ b/include/libtorrent/peer_connection.hpp
@@ -367,8 +367,12 @@ namespace libtorrent
 			return boost::optional<piece_block_progress>();
 		}
 
-		void send_buffer(char const* begin, int size);
-		buffer::interval allocate_send_buffer(int size);
+		// these functions are virtual to let bt_peer_connection hook into them
+		// and encrypt the content
+		virtual void send_buffer(char const* begin, int size);
+		virtual buffer::interval allocate_send_buffer(int size);
+		virtual void setup_send();
+
 		template <class Destructor>
 		void append_send_buffer(char* buffer, int size, Destructor const& destructor)
 		{
@@ -378,7 +382,6 @@ namespace libtorrent
 			m_ses.log_buffer_usage();
 #endif
 		}
-		void setup_send();
 
 #ifndef TORRENT_DISABLE_RESOLVE_COUNTRIES	
 		void set_country(char const* c)