Function unbound_sys::ub_resolve_async

pub unsafe extern "C" fn ub_resolve_async(
    ctx: *mut ub_ctx, 
    name: *const c_char, 
    rrtype: c_int, 
    rrclass: c_int, 
    mydata: *mut c_void, 
    callback: ub_callback_t, 
    async_id: *mut c_int
) -> c_int