Method resolve

examples/io/udp/dns/dns.js:49–76

(options)

		this.#socket = this.#servers = this.#timer = this.#UDP = undefined;
	}
	resolve(options) {
		let {onResolved, onError, host} = options;
		if (!host || (!onResolved && !onError) || !this.#UDP)
			throw new Error;

		host = host.toString();
		if ("localhost" === host)
			host = "127.0.0.1";
		
		const parts = host.split(".");
		let isAddress = 4 === parts.length;
		if (isAddress) {
			for (let i = 0; i < 4; i++) {
				if (parseInt(parts[i]) != parts[i])
					isAddress = false; 
			}
		}
		const request = {
			state: 0,
			id: host.endsWith(".local") ? 0 : ((Math.random() * 65535) | 1),		//@@ collision
			host,
			onResolved,
			onError,
			isAddress
		}
		this.#requests.push(request);
		this.#timer ??= Timer.set(() => this.#task(), 0, 1000);
	} 
	#send(request) {
		const packet = new Serializer({query: true, recursionDesired: true, opcode: DNS.OPCODE.QUERY, id: request.id});
		packet.add(DNS.SECTION.QUESTION, request.host, DNS.RR.A, DNS.CLASS.IN);