extern void invert_address(uschar *, uschar *);
extern int ip_bind(int, int, uschar *, int);
extern int ip_connect(int, int, uschar *, int, int);
+extern int ip_connectedsocket(int, const uschar *, int, int,
+ int, host_item *, uschar **);
extern int ip_get_address_family(int);
extern void ip_keepalive(int, uschar *, BOOL);
extern int ip_recv(int, uschar *, int, int);
extern BOOL string_format(uschar *, int, const char *, ...) ALMOST_PRINTF(3,4);
extern uschar *string_format_size(int, uschar *);
extern int string_interpret_escape(uschar **);
-extern int string_is_ip_address(uschar *, int *);
+extern int string_is_ip_address(const uschar *, int *);
extern uschar *string_log_address(address_item *, BOOL, BOOL);
extern uschar *string_nextinlist(uschar **, int *, uschar *, int);
extern uschar *string_open_failed(int, const char *, ...) PRINTF_FUNCTION(2,3);
extern int verify_check_header_address(uschar **, uschar **, int, int, int,
uschar *, uschar *, int, int *);
extern int verify_check_headers(uschar **);
+extern int verify_check_header_names_ascii(uschar **);
extern int verify_check_host(uschar **);
extern int verify_check_notblind(void);
extern int verify_check_this_host(uschar **, unsigned int *, uschar*,