private void Start()
{
if (client.Handle == IntPtr.Zero || handle != IntPtr.Zero ||
(foundListeners.Count == 0 && timeoutListeners.Count == 0))
return;
lock (client) {
handle = avahi_service_resolver_new (client.Handle, iface, proto,
Utility.StringToBytes (name), Utility.StringToBytes (type),
Utility.StringToBytes (domain), aproto, flags, cb, IntPtr.Zero);
if (handle == IntPtr.Zero)
client.ThrowError ();
}
}