use std::net::*;
use trust_dns_resolver::config::*;
use trust_dns_resolver::Resolver;

pub fn resolve(url: &str) -> Vec<IpAddr> {
    // Construct a new Resolver with default configuration options
    let resolver = Resolver::new(ResolverConfig::default(), ResolverOpts::default()).unwrap();

    // Lookup the IP addresses associated with a name.
    let response = resolver.lookup_ip(url).unwrap();

    // There can be many addresses associated with the name,
    //  this can return IPv4 and/or IPv6 addresses
    response.iter().collect()
}