UDP is a connectionless protocol ..
--
explicit-exit-notify is used to notify the server that the client is disconnecting from the VPN.
TCP is a Connection-Oriented protocol ..
There is no requirement for --
explicit-exit-notify as the TCP protocol handles the connection state.
hyen56 wroteafter he disconnects so he can connect again so the problem is when he get reconnects on TCP his is_user_online is to =1 making him can't connect
This suggests there is an error in your script.