func NewClientQueue(conn *net.UDPConn, cache *cache.Cache, sq *Sq) *Cq {
cq := &Cq{conn: conn, cache: cache, sq: sq, inflight: make(map[string][]chan bool, 0)}
cache.RegisterPutCallback(cq.handlePutCallback)
return cq
}
func NewServerQueue(nc *cache.Cache) *Sq {
sq := &Sq{}
nc.RegisterVeritfyCallback(sq.handleVerifyCallback)
return sq
}