//TellUpdate makes mynode info from node or dnsname or ip addr,
//and broadcast the updates of record id=id in cache c.datfile with stamp.
func TellUpdate(datfile string, stamp int64, id string, n *node.Node) {
const updateNodes = 10
tellstr := node.Me(true).Toxstring()
if n != nil {
tellstr = n.Toxstring()
}
msg := strings.Join([]string{"/update", datfile, strconv.FormatInt(stamp, 10), id, tellstr}, "/")
ns := Get(datfile, nil)
ns = ns.Extend(Get(list, nil))
ns = ns.Extend(Random(ns, updateNodes))
log.Println("telling #", len(ns))
for _, n := range ns {
_, err := n.Talk(msg, nil)
if err != nil {
log.Println(err)
}
}
}
