Function c_ares_sys::ares_dns_opt_get_datatype

pub unsafe extern "C" fn ares_dns_opt_get_datatype(
    key: ares_dns_rr_key_t,
    opt: c_ushort,
) -> ares_dns_opt_datatype_t

The options/parameters extensions to some RRs can be somewhat opaque, this is a helper to return the best match for a datatype for interpreting the option record.

\param[in] key Key associated with options/parameters \param[in] opt Option Key/Parameter \return Datatype