pub type BIO_callback_fn = Option<unsafe extern "C" fn(bio: *mut BIO, oper: c_int, argp: *const c_char, argi: c_int, argl: c_long, bio_ret: c_long) -> c_long>;Aliased Type§
pub enum BIO_callback_fn {
None,
Some(unsafe extern "C" fn(*mut bio_st, i32, *const i8, i32, i64, i64) -> i64),
}