Function c_ares_sys::ares_dns_rr_get_opt_cnt

source · 
pub unsafe extern "C" fn ares_dns_rr_get_opt_cnt(
    dns_rr: *const ares_dns_rr_t,
    key: ares_dns_rr_key_t
) -> usize
Expand description

Retrieve the number of options stored for the RR.

\param[in] dns_rr Pointer to resource record \param[in] key DNS Resource Record Key \return count, or 0 if none.