--- src/tcpflow.h
+++ src/tcpflow.h
@@ -82,6 +82,10 @@
 #define FLOW_FINISHED		(1 << 0)
 #define FLOW_FILE_EXISTS	(1 << 1)
 
+/* Direction flags: server to client or client to server. */
+#define FLOW_DIR_SC		(1 << 2)
+#define FLOW_DIR_CS		(1 << 3)
+
 typedef struct flow_state_struct flow_state_t;
 
   
@@ -131,9 +135,10 @@
 void process_ip(const u_char *data, u_int32_t length);
 void process_tcp(const u_char *data, u_int32_t length, u_int32_t src,
 		 u_int32_t dst);
-void print_packet(flow_t flow, const u_char *data, u_int32_t length);
-void store_packet(flow_t flow, const u_char *data, u_int32_t length,
-		  u_int32_t seq);
+void print_packet(flow_t flow, flow_state_t *state, const u_char *data,
+		  u_int32_t length);
+void store_packet(flow_t flow, flow_state_t *state, const u_char *data,
+		  u_int32_t length, u_int32_t seq, int syn_set);
 u_char *do_strip_nonprint(const u_char *data, u_int32_t length);
 
 /* flow.c */