Development of client server app!!!

[Sonal Sharma]

The scenario is such that we want to make a License server.License file is unique for 20 users using it simultaneously but if 21st user comes in he should not be allowed to use that license file.How can we build this application from client server point of view.

[Rahul Bhattacharjee]

It doesnot sound very complicated , I think this isn't the full requirement.

You can simple keep track of how many clients are using the liscences , before handing over liscence you can check whether it has exceed its limit or not.

Can you elaborate on this.

[Sonal Sharma]

Hi Rahul,
Actually the problem is the solution to this problem should be such which can work in web environment as well as desktop application.
Should I use RMI with Swing for Desktop applications?
or Should I use Java,JSP,Servlets?

Thanks

[Rahul Bhattacharjee]

Originally posted by Sonal Sharma:
Hi Rahul,
Actually the problem is the solution to this problem should be such which can work in web environment as well as desktop application.
Should I use RMI with Swing for Desktop applications?
or Should I use Java,JSP,Servlets?

Thanks

I do not think you need an UI for this piece.It should be as a service and that can be anything without the need of an UI.

The clients would request the server for a Liscense and the server would hand over a file in case the the client is meeting the criteria , otherwise will return an message.

[Sonal Sharma]

Dear Rahul,
Question still remains.Give me some inputs to develop this service as you call it.What things should I use to develop it.I know I have to use a little of encryption/decryption as well.

Thanks

[Rahul Bhattacharjee]

Originally posted by Sonal Sharma:
Give me some inputs to develop this service as you call it.What things should I use to develop it.

You can use web services for this or write a server and client from scratch for this using plain java sockets.

I do not know much about WS but this should work in that way.
Your client can request a licence from the web service.The service should check whether its having enough licences to hand over.If yes , then it can give back the licence , if the licence is binay then the service might go ahead and base64encode and send the licence in the response.In case it doesnot have enough license then it might return a fault.
[ May 23, 2007: Message edited by: Rahul Bhattacharjee ]

[Sonal Sharma]

Thanks Rahul for your suggestions.