# define FD_SET(n, p) (*(p) |= (1 << ((n) % NFDBITS)))
# define FD_CLR(n, p) (*(p) &= ~(1 << ((n) % NFDBITS)))
# define FD_ISSET(n, p) (*(p) & (1 << ((n) % NFDBITS)))
-# define FD_ZERO(p) memset((char *)(p), 0, sizeof(*(p)))
+# define FD_ZERO(p) memset((p), 0, sizeof(*(p)))
#endif
#define PORT 4433
int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
unsigned int *cookie_len);
-int verify_cookie_callback(SSL *ssl, unsigned char *cookie,
+int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
unsigned int cookie_len);
typedef struct ssl_excert_st SSL_EXCERT;