I want to switch from original MOD_RSsim to ModRSsim2 to get the socket timeout functionality for test purpose. But the client device under test can't connect to ModRSsim2 server mounted on a Win10 laptop. The laptop have a wifi connection in DHCP IP (to acces on Internet) and is physical network card is configured in static IP on a subnet. The client device is in static IP on same subnet than laptop. If I use a modbus client software (like "Generic Modbus/Jbus Tester" version 4.7) on the laptop an try to connect to ModRSsim2, this work very well...
I forgot to mention that it works with the original software (MOD_RSsim) under the conditions mentioned above.
All previous versions of this software are posted here on the sourceforge.net site. Therefore, you could see if the original version worked and test each successive version to see where it stops working. Even the original project here https://sourceforge.net/projects/modrssim/ had the ability to set socket timeouts.