Method resolve

modules/network/net/netmdns.js:30–66

(host, client)

	static get() @ "xs_net_get";
	
	static resolve(host, client) {
		if (!host.endsWith(".local"))
			return this._resolve(host, client);

		const socket = new Socket({kind: "UDP"});
		socket.host = host;
		socket.client = client;
		socket.callback = callback;

		host = host.split(".");
		if (2 !== host.length)
			throw new Error("unrecognized");

		host[0] = ArrayBuffer.fromString(host[0]);
		host[1] = ArrayBuffer.fromString(host[1]);

		const packet = new Uint8Array(12 + host[0].byteLength + host[1].byteLength + 3 + 4);
		packet[5] = 1;		// 1 question
		let position = 12;
		packet[position++] = host[0].byteLength;
		packet.set(new Uint8Array(host[0]), position); position += host[0].byteLength;
		packet[position++] = host[1].byteLength;
		packet.set(new Uint8Array(host[1]), position); position += host[1].byteLength;
		packet[position + 2] = packet[position + 4] = 1;
		packet[position + 3] = 0x80;

		let count = 3;
		socket.timer = Timer.repeat(function (id) {
			if (0 === count--) {
				socket.client(socket.host)
				Timer.clear(id);
				return socket.close();
			}
			trace(`query ${socket.host}\n`);
			socket.write("224.0.0.251", 5353, packet.buffer);
		}, 1000, 1);
	}
	static _resolve(host, callback) @ "xs_net_resolve";
}