searchlight 0.3.2

📡 Rust mDNS server & client library designed with user interfaces in mind
Documentation 
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use searchlight::{
	discovery::{DiscoveryBuilder, DiscoveryEvent},
	dns::{op::DnsResponse, rr::RData},
	net::IpVersion,
};

fn get_chromecast_name(dns_packet: &DnsResponse) -> String {
	dns_packet
		.additionals()
		.iter()
		.find_map(|record| {
			if let Some(RData::SRV(_)) = record.data() {
				let name = record.name().to_utf8();
				let name = name.strip_suffix('.').unwrap_or(&name);
				let name = name.strip_suffix("_googlecast._tcp.local").unwrap_or(&name);
				let name = name.strip_suffix('.').unwrap_or(&name);
				Some(name.to_string())
			} else {
				None
			}
		})
		.unwrap_or_else(|| "Unknown".into())
}

fn main() {
	DiscoveryBuilder::new()
		.service("_googlecast._tcp.local.")
		.unwrap()
		.build(IpVersion::Both)
		.unwrap()
		.run(|event| match event {
			DiscoveryEvent::ResponderFound(responder) => {
				println!(
					"Found Chromecast {} at {}",
					get_chromecast_name(&responder.last_response),
					responder.addr.ip()
				);
			}

			DiscoveryEvent::ResponderLost(responder) => {
				println!(
					"Chromecast {} at {} has gone away",
					get_chromecast_name(&responder.last_response),
					responder.addr.ip()
				);
			}

			DiscoveryEvent::ResponseUpdate { .. } => {}
		})
		.unwrap();
}