can't connect to DW6(zkteco)

[raindy29]

I'm sure the protocol TCP:4370, but why are all zklib library connected using UDP?

I have to track code (function connect), socket_recvfrom($this->socket, $this->received_data, 1024, 0, $this->ip, $this->port); always return empty , But use zktime for win can connect

[syedJunaidd]

I am facing the same issue with zkteck k14. successfully connect device with zktime 3.0 but facing connection problem on web