# define BIO_set_conn_mode(b,n) BIO_ctrl(b,BIO_C_SET_CONNECT_MODE,(n),NULL)
# define BIO_set_sock_type(b,t) BIO_ctrl(b,BIO_C_SET_SOCK_TYPE,(t),NULL)
# define BIO_get_sock_type(b) BIO_ctrl(b,BIO_C_GET_SOCK_TYPE,0,NULL)
-# define BIO_get_dgram_bio(b, p) BIO_ctrl(b,BIO_C_GET_DGRAM_BIO,0,(void *)(BIO **)(p))
+# define BIO_get0_dgram_bio(b, p) BIO_ctrl(b,BIO_C_GET_DGRAM_BIO,0,(void *)(BIO **)(p))
/* BIO_s_accept() */
# define BIO_set_accept_name(b,name) BIO_ctrl(b,BIO_C_SET_ACCEPT,0, \