-static char *null_init(void *, void **, Config *, char *, int, char **, int);
-static char *loop_init(void *, void **, Config *, char *, int, char **, int);
+static const char *null_init(void *, void **, Config *, char *, int, char **,
+ int, int);
+static const char *loop_init(void *, void **, Config *, char *, int, char **,
+ int, int);
static void null_free(void *);
static void loop_free(void *);
static void null_reconfig(void *, Config *);
static void null_free(void *);
static void loop_free(void *);
static void null_reconfig(void *, Config *);
-static char *null_init(void *frontend_handle, void **backend_handle,
- Config *cfg, char *host, int port, char **realhost,
- int nodelay) {
+static const char *null_init(void *frontend_handle, void **backend_handle,
+ Config *cfg, char *host, int port,
+ char **realhost, int nodelay, int keepalive) {
-static char *loop_init(void *frontend_handle, void **backend_handle,
- Config *cfg, char *host, int port, char **realhost,
- int nodelay) {
+static const char *loop_init(void *frontend_handle, void **backend_handle,
+ Config *cfg, char *host, int port,
+ char **realhost, int nodelay, int keepalive) {