split long message to multiple fragments

TunnelBase.h

@@ -2,6 +2,7 @@
 #define TUNNEL_BASE_H__
 
 #include <inttypes.h>
+#include "I2NPProtocol.h"
 
 namespace i2p
 {
@@ -20,6 +21,15 @@ namespace tunnel
 		uint8_t hash[32];	
 		I2NPMessage * data;
 	};
+
+	class TunnelBase
+	{
+		public:
+
+			virtual void EncryptTunnelMsg (I2NPMessage * tunnelMsg) = 0;
+			virtual uint32_t GetNextTunnelID () const = 0;
+			virtual const uint8_t * GetNextIdentHash () const = 0;
+	};	
 }
 }