Restart client problem

[wchpikus]

Hello
Could You check something for me?
I have client, and a have to reset them few time.
Your server works very well, but has problem with disconnect issue.
When client disconnect (power off) and connect again, i got ip, but no data incoming from server.
This is when client restart 2 times.
I check for test another server on arduino, and this stuck ip connect any time, but has different problem.

Could you check, why disconnecting client can not connect again?
Regards