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[Dr. Dread]

I am doing this program for a client. It is almost finished, but now the client wants a network-based version of the program.
This version should be able to limit the number of concurrent users so that a 5-user version allows max 5 users on the network to be running the program at the same time.

Does anybody have any experience on this or just some sound idea about how to do it?

Greetz
Dr. Dread

[PGWARE]

You could use vdsipp and have it setup a local server, and have all client computers on the network checkin. A basic udp or tcp client/server will work in this case. In fact you can check the udp examples with VDSIPP as it shows how many clients are connected to the server.

The client could login to the server, if the server notices more than 5 users it sends back text 'DENIED' or whatever text you want basically telling the client program to shutdown.

Using the vdsipp you can make the program work on a local network and you can later make the program work over the internet. Have the clients connect to the local ip for a local network or supply the internet ip to work over the internet

[Skit3000]

And if you don't have a Windows server available online 24/7, you could also create a webpage with PHP or ASP which does about the same. Let your program contact the PHP or ASP page every two minutes and let that script store how many people are online. If too many people are online, just send back a text like 'DENIED'.

[Dr. Dread]

Thanks. That has provided a couple of ideas as a starting point....

Greetz
Dread