[Issue #1] - Added configurable NTPServer option in config.go; also added DNS name resolution so you don't have to use IPs

network.go

@@ -225,3 +225,34 @@ func tcpBackoff(consecutiveBackoffs uint) time.Duration {
   wait := min(shifted, maxWait)
   return time.Duration(wait)
 }
+
+// resolveHostToIP checks if host is already an IP literal, or queries the DNS server.
+func resolveHostToIP(stack *NetworkStack, host string, timeout time.Duration) (netip.Addr, error) {
+	// 1. If it's already an IP string (e.g. "162.159.200.1"), parse and return directly
+	if ip, err := netip.ParseAddr(host); err == nil {
+		return ip, nil
+	}
+
+	// 2. Start asynchronous DNS A-record query
+	if err := stack.stack.StartLookupIP(host); err != nil {
+		return netip.Addr{}, fmt.Errorf("start DNS lookup: %w", err)
+	}
+
+	// 3. Poll ResultLookupIP until done or timed out
+	deadline := time.Now().Add(timeout)
+	for time.Now().Before(deadline) {
+		addrs, done, err := stack.stack.ResultLookupIP(host)
+		if done {
+			if err != nil {
+				return netip.Addr{}, fmt.Errorf("DNS lookup error: %w", err)
+			}
+			if len(addrs) == 0 {
+				return netip.Addr{}, fmt.Errorf("no addresses returned for %s", host)
+			}
+			return addrs[0], nil
+		}
+		time.Sleep(50 * time.Millisecond)
+	}
+
+	return netip.Addr{}, fmt.Errorf("DNS lookup timed out for %s", host)
+}