#define AFB_SESSION_TIMEOUT_DEFAULT -2
#define AFB_SESSION_TIMEOUT_IS_VALID(x) ((x) >= AFB_SESSION_TIMEOUT_DEFAULT)
-extern void afb_session_init(int max_session_count, int timeout, const char *initok);
+extern int afb_session_init(int max_session_count, int timeout, const char *initok);
extern const char *afb_session_initial_token();
extern struct afb_session *afb_session_create (int timeout);