Function lookup 

pub async fn lookup(
    resolver: &str,
    name: &str,
    record_type: (u16, &str),
    private: PrivateAddresses,
) -> Result<Vec<String>, String>

The records of record_type, by number and name, at name, as the resolver at resolver answers: one GET through a client pinned to the resolver’s own addresses, its answer read under MAX_ANSWER_BYTES and by parse.

Errors

The resolver could not be reached, answered with an HTTP error, or answered with something parse refuses.