/* Input-reading functions for messages, so we can use special ones for
incoming TCP/IP. */
-extern int (*lwr_receive_getc)(void);
+extern int (*lwr_receive_getc)(unsigned);
extern int (*lwr_receive_ungetc)(int);
-extern int (*receive_getc)(void);
+extern int (*receive_getc)(unsigned);
extern void (*receive_get_cache)(void);
extern int (*receive_ungetc)(int);
extern int (*receive_feof)(void);
extern BOOL system_filter_uid_set; /* TRUE if uid set */
extern BOOL system_filtering; /* TRUE when running system filter */
+extern BOOL tcp_fastopen_ok; /* appears to be supported by kernel */
extern BOOL tcp_nodelay; /* Controls TCP_NODELAY on daemon */
#ifdef USE_TCP_WRAPPERS
extern uschar *tcp_wrappers_daemon_name; /* tcpwrappers daemon lookup name */