pub type ares_callback = Option<unsafe extern "C" fn(arg: *mut c_void, status: c_int, timeouts: c_int, abuf: *mut c_uchar, alen: c_int)>;Aliased Type§
pub enum ares_callback {
None,
Some(unsafe extern "C" fn(*mut c_void, i32, i32, *mut u8, i32)),
}