func ping_on_connect(host enet.Host, ep string, reason int) {
if reason == 0 {
host.Write(ep, 0, []byte("hello enet"))
}
}
func pong(host enet.Host, ep string, chanid uint8, payload []byte) {
host.Write(ep, chanid, payload)
fmt.Printf("dat pong %v\n", ep)
}
