DataSnap connection problem

[dlucic 0]

I have created a simple datasnap server application
Then I created a client application that connects to the server and performs some simple operation that returns certain data that I display in the TMemo component. When I start the client application from one computer, everything works as it should, but on the other it fails to open the connection and reports : Invalid parameter.
What could be the problem, and I don't think it's FireWall since I can connect via Telnet

 

            

 

 

Edited August 23 by dlucic

[Cristian Peța 103]

Try to add MidasLib unit in the projects uses clause. Maybe the cause is an old midas.dll

[dlucic 0]

Thank you

 

That resolve my problem on Windows machine. But I still have problem on Android. MidasLib must be exscluded from uses when I build app for Android. When I click on button application froze and stop working