Modbus Server C# - the connection still opened despite client deconnection

[AurélienC]

Hello everyone,

I use Modbus Server C# for a communication with several PLCs.

But I have a problem when a client close his socket after sending informations.

The Modbus Server don't response to the client closing connection.
client server
FIN, ACK --->
<--- ACK

and and nothing else from the server...

Any idea ?
Thank you in advance

Aurélien
from France